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d a t a sh eet preliminary speci?cation file under integrated circuits, ic01 2001 dec 11 integrated circuits TDA8929T controller class-d audio amplifier
2001 dec 11 2 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T contents 1 features 2 applications 3 general description 4 ordering information 5 quick reference data 6 block diagram 7 pinning 8 functional description 8.1 controller 8.2 pulse width modulation frequency 8.3 protections 8.3.1 diagnostic temperature 8.3.2 diagnostic current 8.3.3 start-up safety test 8.4 differential audio inputs 9 limiting values 10 thermal characteristics 11 quality specification 12 dc characteristics 13 ac characteristics 14 switching characteristics 14.1 minimum pulse width 15 test and application information 15.1 test circuit 15.2 btl application 15.3 mode pin 15.4 external clock 15.5 reference designs 15.6 reference design bill of material 15.7 curves measured in reference design 16 package outline 17 soldering 17.1 introduction to soldering surface mount packages 17.2 reflow soldering 17.3 wave soldering 17.4 manual soldering 17.5 suitability of surface mount ic packages for wave and reflow soldering methods 18 data sheet status 19 definitions 20 disclaimers
2001 dec 11 3 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 1 features operating voltage from 15 to 30 v very low quiescent current low distortion fixed gain of 30 db single-ended (se) or 36 db bridge-tied load (btl) good ripple rejection internal switching frequency can be overruled by an external clock no switch-on or switch-off plop noise diagnostic input for short-circuit and temperature protection usable as a stereo single-ended (se) amplifier or as a mono amplifier in bridge-tied load (btl) start-up safety test, to protect for short-circuits at the output of the power stage to supply lines electrostatic discharge protection (pin to pin). 2 applications television sets home-sound sets multimedia systems all mains fed audio systems car audio (boosters). 3 general description the TDA8929T is the controller of a two-chip set for a high efficiency class-d audio power amplifier system. the system is divided into two chips: TDA8929T; the analog controller chip in a so24 package tda8926j/st/th or tda8927j/st/th; a digital power stage in a dbs17p, rdbs17p or hsop24 power package. with this chip set a compact 2 50 w or 2 100 w audio amplifier system can be built, operating with high efficiency and very low dissipation. no heatsink is required, or depending on supply voltage and load, a very small one. the system operates over a wide supply voltage range from 15 up to 30 v and consumes a very low quiescent current. 4 ordering information type number package name description version TDA8929T so24 plastic small outline package; 24 leads; body width 7.5 mm sot137-1
2001 dec 11 4 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 5 quick reference data note 1. v p = 25 v. symbol parameter min. typ. max. unit general; note 1 v p supply voltage 15 25 30 v i q(tot) total quiescent current - 20 30 ma stereo single-ended con?guration g v(cl) closed-loop voltage gain 29 30 31 db ? z i ? input impedance 45 68 - k w v n(o) noise output voltage - 220 400 m v svrr supply voltage ripple rejection 40 50 - db a cs channel separation - 70 - db ? v oo ? dc output offset voltage -- 150 mv mono bridge-tied load con?guration g v(cl) closed-loop voltage gain 35 36 37 db ? z i ? input impedance 23 34 - k w v n(o) noise output voltage - 280 -m v svrr supply voltage ripple rejection - 44 - db ? v oo ? dc output offset voltage -- 200 mv
2001 dec 11 5 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 6 block diagram handbook, full pagewidth mgw148 stabilizer sgnd sgnd sgnd sgnd 4 13 5 2 7 6 11 8 9 12 10 17 14 13 16 22 15 19 23 24 21 20 r fb r fb mute mute mute v/i v/i sgnd TDA8929T sgnd oscillator window comparator window comparator mode manager 18 v ss1 sgnd1 v dd1 in1 - in1 + mode osc in2 + in2 - v dd2 sgnd2 v ss2(sub) sw1 rel1 diagcur en1 stab v ssd pwm1 pwm2 en2 diagtmp rel2 sw2 fig.1 block diagram.
2001 dec 11 6 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 7 pinning symbol pin description v ss1 1 negative analog supply voltage channel 1 sgnd1 2 signal ground channel 1 v dd1 3 positive analog supply voltage channel 1 in1 - 4 negative audio input channel 1 in1+ 5 positive audio input channel 1 mode 6 mode select input (standby/mute/operating) osc 7 oscillator frequency adjustment, or tracking input in2+ 8 positive audio input channel 2 in2 - 9 negative audio input channel 2 v dd2 10 positive analog supply voltage channel 2 sgnd2 11 signal ground channel 2 v ss2(sub) 12 negative analog supply voltage channel 2 (substrate) sw2 13 digital switch output channel 2 rel2 14 digital control input channel 2 diagtmp 15 digital input for temperature limit error report from power stage en2 16 digital control output for enable channel 2 of power stage pwm2 17 input for feedback from pwm output power stage channel 2 v ssd 18 negative digital supply voltage; reference for digital interface to power stage stab 19 pin for a decoupling capacitor for internal stabilizer pwm1 20 input for feedback from pwm output power stage channel 1 en1 21 digital control output for enable channel 1 of power stage diagcur 22 digital input for current error report from power stage rel1 23 digital control input channel 1 sw1 24 digital switch output channel 1 handbook, halfpage v ss1 sgnd1 v dd1 in1 - in1 + mode osc in2 + in2 - v dd2 sgnd2 v ss2(sub) sw1 rel1 diagcur en1 stab v ssd pwm1 pwm2 en2 diagtmp rel2 sw2 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 TDA8929T mgw149 fig.2 pin configuration.
2001 dec 11 7 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 8 functional description the combination of the tda8926j and the TDA8929T produces a two-channel audio power amplifier system using the class-d technology (see fig.4). in the TDA8929T controller device the analog audio input signal is converted into a digital pulse width modulation (pwm) signal. the digital power stage (tda8926) is used for driving the low-pass filter and the loudspeaker load. it performs a level shift from the low-power digital pwm signal, at logic levels, to a high-power pwm signal that switches between the main supply lines. a second-order low-pass filter converts the pwm signal into an analog audio signal across the loudspeaker. for a description of the power stage see the specification of the tda8926. the tda8926 can be used for an output power of 2 50 w. the tda8927 should be used for a higher output power of 2 100 w. 8.1 controller the controller contains (for two audio channels) two pulse width modulators (pwms), two analog feedback loops and two differential input stages. this chip also contains circuits common to both channels such as the oscillator, all reference sources, the mode functionality and a digital timing manager. the pinning of the TDA8929T and the power stage devices are designed to have very short and straight connections between the packages. for optimum performance the interconnections between the packages must be as short as possible. using this two-chip set an audio system with two independent amplifier channels with high output power, high efficiency (90%) for the system, low distortion and a low quiescent current is obtained. the amplifiers channels can be connected in the following configurations: mono bridge-tied load (btl) amplifier stereo single-ended (se) amplifier. the amplifier system can be switched in three operating modes via the mode select pin: standby: with a very low supply current mute: the amplifiers are operational, but the audio signal at the output is suppressed on: amplifier fully operational with output signal. for suppressing pop noise the amplifier will remain automatically for approximately 220 ms in the mute mode before switching to operating mode. in this time the coupling capacitors at the input are fully charged. figure 3 shows an example of a switching circuit for driving pin mode. mgw150 handbook, halfpage r r mode sgnd mute/on standby/ mute + 5 v fig.3 mode select switch circuitry.
2001 dec 11 8 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T this text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader .this text is here in _ white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader.this text is here inthis text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader. white to force landscape pages to be ... handbook, full pagewidth 1 4 in1 - pwm1 5 in1 + in2 + in2 - v i(2) v i(1) mute mute sgnd sgnd sgnd1 sgnd2 3 20 rel1 23 sw1 24 en1 stab diagcur diagtmp sw2 rel2 pwm2 21 22 19 15 13 en2 rel1 sw1 en1 sw2 rel2 en2 16 14 17 6 11 8 9 7 2 r fb r fb input stage input stage TDA8929T pwm modulator pwm modulator mode stabi oscillator manager v ssa v dda v ss1 v dd1 12 10 v ssa v dda v ss2(sub) v ssd v dd2 v mode v ssa mode osc r osc 18 mgu387 control and handshake driver high tda8926j driver low 2 7 + 25 v - 25 v v ss1 v ss1 v ssa v ss2 v ssd v ddd v dd2 v dda 6 1 4 810 v dd2 v dd1 13 5 control and handshake driver high driver low 14 11 12 17 16 boot1 out1 out2 boot2 sgnd (0 v) stab powerup diag temperature sensor and current protection 9 3 15 fig.4 typical application schematic of the class-d system using TDA8929T and the tda8926j.
2001 dec 11 9 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 8.2 pulse width modulation frequency the output signal of the power stage is a pwm signal with a carrier frequency of approximately 300 khz. using a second-order lc demodulation filter in the application results in an analog audio signal across the loudspeaker. this switching frequency is fixed by an external resistor r osc connected between pin osc and v ss . with the resistor value given in the application diagram, the carrier frequency is typical 317 khz. the carrier frequency can be calculated using: [hz] if two or more class-d systems are used in the same audio application, it is advised to have all devices working at the same switching frequency. this can be realized by connecting all osc pins together and feed them from an external oscillator. using an external oscillator it is necessary to force pin osc to a dc-level above sgnd for switching from the internal to an external oscillator. in this case the internal oscillator is disabled and the pwm will switch on the external frequency. the frequency range of the external oscillator must be in the range as specified in the switching characteristics. application in a practical circuit: internal oscillator: r osc connected between pin osc and v ss external oscillator: connect oscillator signal between pin osc and pin sgnd; delete r osc . 8.3 protections the controller is provided with two diagnostic inputs. one or both pins can be connected to the diagnostic output of one or more power stages. 8.3.1 d iagnostic temperature a low level on pin diagtmp will immediately force both pins en1 and en2 to a low level. the power stage shuts down and the temperature is expected to drop. if pin diagtmp goes high, pins en1 and en2 will immediately go high and normal operation will be maintained. temperature hysteresis, a delay before enabling the system again, is arranged in the power stage. internally there is a pull-up resistance to 5 v at the diagnostic input of the controller. because the diagnostic output of the power stage is an open-drain output, diagnostic lines can be connected together (wired-or). it should be noted that the TDA8929T itself has no temperature protection. 8.3.2 d iagnostic current this input is intended to protect against short-circuits across the loudspeaker load. in the event that the current limit in the power stage is exceeded, pin diagcur must be pulled to a low level. a low level on the diagnostic current input will immediately force the output pins en1 and en2 to a low level. the power stage will shut down within less than 1 m s and the high current is switched off. in this state the dissipation is very low. every 220 ms the controller will attempt to restart the system. if there is still a short-circuit across the loudspeaker load, the system is switched off again as soon as the maximum current is exceeded. the average dissipation will be low because of this low duty factor. the actual current limiting value is set by the power stage. depending on the type of power stage which is used, several values are possible: tda8926th: limit value can be externally adjusted with a resistor; maximum is 5 a tda8927th: limit value can be externally adjusted with a resistor; maximum is 7.5 a tda8926j and tda8926st: limit value is fixed at 5 a tda8927j and tda8927st: limit value is fixed at 7.5 a. f osc 910 9 r osc ------------------ - =
2001 dec 11 10 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 8.3.3 s ta rt - up safety test during the start-up sequence, when pin mode is switched from standby to mute, the condition at the output terminals of the power stage are checked. these are the same lines as the feedback inputs of the controller. in the event of a short-circuit of one of the output terminals to v dd or v ss the start-up procedure is interrupted and the system waits for non-shorted outputs. because the test is done before enabling the power stages, no large currents will flow in the event of a short-circuit. this system protects against short-circuits at both sides of the output filter to both supply lines. when there is a short-circuit from the outputs of the power stage to one of the supply lines, before the demodulation filter, it will also be detected by the start-up safety test. practical use from this test feature can be found in detection of short-circuits on the printed-circuit board. remark: this test is only operational prior to or during the start-up sequence, and not during normal operating. 8.4 differential audio inputs for a high common mode rejection and a maximum flexibility of application, the audio inputs are fully differential. by connecting the inputs anti-parallel the phase of one of the channels is inverted, so that a load can be connected between the two output filters. in this case the system operates as a mono btl amplifier (see fig.5). also in the stereo single-ended configuration it is recommended to connect the two differential inputs in anti-phase. this has advantages for the current handling of the power supply at low signal frequencies. handbook, full pagewidth mgw185 TDA8929T rel1 sw1 en1 en2 sw2 out1 sgnd out2 rel2 in1 + v i in1 - in2 + in2 - controller power stage fig.5 mono btl application.
2001 dec 11 11 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 9 limiting values in accordance with the absolute maximum rate system (iec 60134). notes 1. human body model (hbm); r s = 1500 w and c = 100 pf. 2. machine model (mm); r s =10 w ; c = 200 pf and l = 0.75 m h. 10 thermal characteristics 11 quality specification in accordance with snw-fq611-part d if this device is used as an audio amplifier. symbol parameter conditions min. max. unit v p supply voltage - 30 v v mode(sw) mode select switch voltage referenced to sgnd 0 5.5 v t stg storage temperature - 55 +150 c t amb ambient temperature - 40 +85 c t vj virtual junction temperature - 150 c v es(hbm) electrostatic discharge voltage (hbm) note 1 all pins with respect to v dd (class a) - 500 +500 v all pins with respect to v ss (class a1) - 1000 +1000 v all pins with respect to gnd (class b) - 2500 +2500 v all pins with respect to each other (class b) - 2000 +2000 v v es(mm) electrostatic discharge voltage (mm) note 2 all pins with respect to v dd (class a) - 100 +100 v all pins with respect to v ss (class b) - 100 +100 v all pins with respect to gnd (class b) - 300 +300 v all pins with respect to each other (class b) - 200 +200 v symbol parameter conditions value unit r th(j-a) thermal resistance from junction to ambient in free air 65 k/w
2001 dec 11 12 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 12 dc characteristics v p = 25 v; t amb =25 c; measured in fig.10; unless otherwise speci?ed. symbol parameter conditions min. typ. max. unit supply v p supply voltage note 1 15 25 30 v i q(tot) total quiescent current - 20 30 ma i stb standby current v mode =0v - 30 100 m a offset ? v oo ? output offset voltage in system on and mute -- 150 mv ?d v oo ? delta output offset voltage in system on ? mute -- 80 mv mode select input (pin mode); see figs 6, 7 and 8 v mode input voltage note 2 0 - 5.5 v i mode input current v mode = 5.5 v -- 1000 m a v th1+ positive threshold voltage 1 standby ? mute; note 2 - 1.6 2.0 v v th1 - negative threshold voltage 1 mute ? standby; note 2 0.8 1.0 - v v mode(hys1) hysteresis voltage 1 ? (v th1+ ) - (v th1 - ) ?- 600 - mv v th2+ positive threshold voltage 2 mute ? on; note 2 - 3.8 4.0 v v th2 - negative threshold voltage 2 on ? mute; note 2 3.0 3.2 - v v mode(hys2) hysteresis voltage 2 ? (v th2+ ) - (v th2 - ) ?- 600 - mv audio inputs (pins in1+, in1 - , in2+ and in2 - ) v i dc input voltage note 2 - 0 - v internal stabilizer (pin stab) v o(stab) stabilizer output voltage mute and on; note 3 11 13 15 v i stab(max) maximum current on pin stab mute and on 10 -- ma enable outputs (pins en1 and en2) v oh high-level output voltage referenced to v ss v stab - 1.6 v stab - 0.7 - v v ol low-level output voltage referenced to v ss 0 - 0.8 v current diagnose input (pin diagcur with internal pull-up resistance) v ih high-level input voltage no errors; note 3 - v stab - v v il low-level input voltage note 3 0 - 1.5 v r pu(int) internal pull-up resistance to internal digital supply - 12 - k w temperature diagnose input (pin diagtmp with internal pull-up resistance) v ih high-level input voltage no errors; note 3 4 5.5 v v il low-level input voltage note 3 0 - 1.5 v
2001 dec 11 13 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T notes 1. the circuit is dc adjusted at v p = 15 to 30 v. 2. referenced to sgnd (0 v). 3. referenced to v ss . 13 ac characteristics r pu(int) internal pull-up resistance to internal digital supply - 12 - k w switch outputs (pins sw1 and sw2) v oh high-level output voltage note 3 v stab - 1.6 v stab - 0.7 - v v ol low-level output voltage note 3 0 - 0.8 v control inputs (pins rel1 and rel2) v ih high-level input voltage note 3 10 - v stab v v il low-level input voltage note 3 0 - 2v symbol parameter conditions min. typ. max. unit stereo single-ended application; note 1 thd total harmonic distortion p o = 1 w; note 2 f i = 1 khz - 0.01 0.05 % f i = 10 khz - 0.1 - % g v(cl) closed-loop voltage gain 29 30 31 db svrr supply voltage ripple rejection on; f i = 100 hz; note 3 - 55 - db on; f i = 1 khz; note 3 40 50 - db mute; f i = 100 hz; note 3 - 55 - db standby; f i = 100 hz; note 3 - 80 - db ? z i ? input impedance 45 68 - k w v n(o) noise output voltage on; r s =0 w ; b = 22 hz to 22 khz - 220 400 m v on; r s =10k w ; b = 22 hz to 22 khz - 230 -m v mute; note 4 - 220 -m v a cs channel separation p o = 10 w; r s =0 w- 70 - db ?d g v ? channel unbalance -- 1db v o output signal mute; v i =v i(max) = 1 v (rms) -- 400 m v cmrr common mode rejection ratio v i = 1 v (rms) - 75 - db mono btl application; note 5 thd total harmonic distortion p o = 1 w; note 2 f i = 1 khz - 0.01 0.05 % f i = 10 khz - 0.1 - % g v(cl) closed-loop voltage gain 35 36 37 db symbol parameter conditions min. typ. max. unit
2001 dec 11 14 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T notes 1. v p = 25 v; f i = 1 khz; t amb =25 c; measured in fig.10; unless otherwise specified. 2. thd is measured in a bandwidth of 22 hz to 22 khz. when distortion is measured using a low-order low-pass filter a significantly higher value will be found, due to the switching frequency outside the audio band. 3. v ripple =v ripple(max) = 2 v (p-p); r s =0 w . 4. b = 22 hz to 22 khz and independent of r s . 5. v p = 25 v; f i = 1 khz; t amb =25 c; measured in reference design in fig.12; unless otherwise specified. svrr supply voltage ripple rejection on; f i = 100 hz; note 3 - 49 - db on; f i = 1 khz; note 3 36 44 - db mute; f i = 100 hz; note 3 - 49 - db standby; f i = 100 hz; note 3 - 80 - db ? z i ? input impedance 23 34 - k w v n(o) noise output voltage on; r s =0 w ; b = 22 hz to 22 khz - 280 500 m v on; r s =10k w ; b = 22 hz to 22 khz - 300 -m v mute; note 4 - 280 -m v v o output signal mute; v i =v i(max) = 1 v (rms) -- 500 m v cmrr common mode rejection ratio v i = 1 v (rms) - 75 - db symbol parameter conditions min. typ. max. unit handbook, full pagewidth v mode(hys1) v mode(hys2) v mode v th1 - v th1 + v th2 - v th2 + mgw334 standby mute on fig.6 mode pin selection.
2001 dec 11 15 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T handbook, full pagewidth mgw152 on mute switching audio standby > 110 ms 110 ms 0 v (sgnd) 2 v 4 v v mode v en v stab v ss fig.7 mode pin timing from standby to on via mute. when switching from standby to mute there is a delay of 110 ms before the output starts switching. the audio signal is available after the mode pin has been set to on, but not earlier than 220 ms after switching to mute. handbook, full pagewidth mgw151 on switching audio standby 110 ms 110 ms 0 v (sgnd) 4 v v mode v en v stab v ss fig.8 mode pin timing from standby to on. when switching from standby to on there is a delay of 110 ms before the output starts switching. after a second delay of 110 ms the audio signal is available.
2001 dec 11 16 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 14 switching characteristics v p = 25 v; t amb =25 c; measured in fig.10; unless otherwise speci?ed. notes 1. frequency set with r osc , according to the formula in the functional description. 2. for tracking the external oscillator has to switch around sgnd + 2.5 v with a minimum voltage of v osc(ext) . 14.1 minimum pulse width the minimum obtainable pulse width of the pwm output signal of a class-d system, sets the maximum output voltage swing after the demodulation filter and also the maximum output power. delays in the power stages are the main cause for the minimum pulse width being not equal to zero. the tda8926 and tda8927 power stages have a minimum pulse width of t w(min) = 220 ns (typical). using the TDA8929T controller, the effective minimum pulse is reduced by a factor of two during clipping. for the calculation of the maximum output power at clipping the effective minimum pulse width during clipping is 0.5t w(min) . for the practical useable minimum and maximum duty factor (d) which determines the maximum output power: 100% < d < 100% using the typical values of the tda8926 and tda8927 power stages: 3.5% < d < 96.5%. symbol parameter conditions min. typ. max. unit switching frequency f osc oscillator frequency r osc = 30.0 k w 309 317 329 khz r osc =27k w ; see fig.12 - 360 - khz f osc(r) oscillator frequency range note 1 210 - 600 khz v osc maximum voltage at pin osc frequency tracking -- sgnd + 12 v v osc(trip) trip level at pin osc for tracking frequency tracking - sgnd + 2.5 - v f track frequency range for tracking frequency tracking 200 - 600 khz v osc(ext) voltage at pin osc for tracking note 2 - 5 - v t w(min) f osc 2 ------------------------------- 1 t w(min) f osc 2 ------------------------------- C ? ??
2001 dec 11 17 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 15 test and application information 15.1 test circuit the test diagram in fig.10 can be used for stand alone testing of the controller. audio and mode input pins are configured as in the application. for the simulation of a switching output power stage a simple level shifter can be used. it converts the digital pwm signal from the controller (switching between v ss and v ss + 12 v level) to a pwm signal switching between v dd and v ss . a proposal for a simple level shifting circuit is given in fig.9. the low-pass filter performs the demodulation, so that the audio signal can be measured with an audio analyzer. for measuring low distortion values, the speed of the level shifter is important. special care has to be taken at a sufficient supply decoupling and output waveforms without ringing. the handshake with the power stage is simulated by a direct connection of the release inputs (rel1 and rel2) with the switch outputs (sw1 and sw2) of the controller. the enable outputs (en1 and en2) for waking-up the power stage are not used here, only the output level and timing are measured. handbook, full pagewidth mgw154 10 k w 1.33 k w 2 k w 74lv14 20 k w 10 w 33 w 42 w 10 nf pwm v dd v ss switch 0/12 v v ss + 5 v bst82 phc2300 10 w fig.9 level shifter.
2001 dec 11 18 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T this text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader .this text is here in _ white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader.this text is here inthis text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader. white to force landscape pages to be ... d book, full pagewidth mgw153 30 k w 47 m f 100 nf stabilizer sgnd sgnd sgnd sgnd 100 nf audio analyzer audio left audio right 220 nf 220 nf 100 nf sgnd sgnd 4 13 5 2 7 6 11 8 9 12 10 17 14 13 16 22 15 19 23 24 21 0 / 12 v - 30 v/ + 30 v 20 r fb r fb mute mute mute v/i v/i sgnd TDA8929T sgnd oscillator window comparator window comparator mode manager 220 nf 220 nf 18 v ss1 sgnd1 v dd1 in1 - in1 + mode v mode v ss v i(l) v i(r) osc in2 + in2 - v dd2 v dd sgnd2 v ss2(sub) v ss 47 m f 100 nf v dd v dd v ss v ss sw1 rel1 level shifter 30 khz low-pass diagcur en1 stab v ssd v ss pwm1 pwm2 pwm en2 diagtmp rel2 sw2 sgnd v p v ss v dd v p v v v v sgnd audio analyzer 0 / 12 v - 30 v/ + 30 v v dd v ss v ss level shifter 30 khz low-pass pwm v fig.10 test diagram.
2001 dec 11 19 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 15.2 btl application when using the system in a mono btl application (for more output power), the inputs of both channels must be connected in parallel. the phase of one the inputs must be inverted (see fig.5). in principle the loudspeaker can be connected between the outputs of the two single-ended demodulation filters. for improving the common mode behavior of the filter, the configuration in fig.12 is advised. 15.3 mode pin for correct operation the switching voltage on pin mode should be de-bounced. if this pin is driven by a mechanical switch an appropriate de-bouncing low-pass filter should be used. if pin mode is driven by an electronic circuit or microcontroller then it should remain, for at least 100 ms, at the mute voltage level (v th1+ ) before switching back to the standby voltage level. 15.4 external clock figure 11 shows an external clock oscillator circuit. 15.5 reference designs the reference design for a two-chip class-d audio amplifier for tda8926j or tda8927j and TDA8929T is shown in fig.12. the printed-circuit board (pcb) layout is shown in fig.13. the bill of materials is given in table 1. the reference design for a two-chip class-d audio amplifier for tda8926th or tda8927th and TDA8929T is shown in fig.14. the pcb layout is shown in fig.15. handbook, full pagewidth mgw155 r19 5 k w 9.1 k w r1 39 k w r20 mode select external clock s1 on mode osc mute off c44 220 nf d1 5v6 c3 120 pf 1 hef4047b j1 14 2 gnd 13 312 411 510 69 78 v dda 6 TDA8929T 7 fig.11 external oscillator circuit.
2001 dec 11 20 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T this text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader .this text is here in _ white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader.this text is here inthis text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader. white to force landscape pages to be ... handbook, full pagewidth mld633 39 k w r19 39 k w r7 10 k w 220 nf c2 r20 1 k w r10 sumida 33 m h cdrh127-330 l4 sumida 33 m h cdrh127-330 l2 gnd 220 nf c44 220 nf c1 3 6 17 pwm2 5 4 8 9 10 12 15 n.c. 1 1 nf c29 input 2 input 1 j5 j6 d1 (5.6 v) d2 (7.5 v) in1 + in1 - gnd 2 11 sgnd1 sgnd2 s1 v ssa v ss1 v ss2 v dda v dd2 v dd1 gnd 1 2 1 2 1 2 qgnd qgnd qgnd qgnd out1 - out1 + out1 + out2 - out2 - out2 + boot2 boot1 out1 out2 v ddd v dd1 v dd2 v ss2 v ss1 v ddd v ssd v ssa v ssd 27 k w r1 7 220 nf c3 osc powerup v ssa 220 nf c5 mode v dda r24 200 k w v ddd on mute off u2 TDA8929T controller c22 330 pf c27 470 nf c4 220 nf c7 220 nf c14 470 nf c18 1 nf c19 1 nf c20 1 nf c21 1 nf c16 470 nf c6 220 nf c9 15 nf c8 15 nf c43 180 pf in2 + in2 - r6 10 k w c26 470 nf r4 10 k w 1 nf c28 c24 470 nf r5 10 k w j3 j1 qgnd qgnd inputs outputs power supply mode select j4 j2 v ss c25 470 nf c23 330 pf r11 5.6 w c10 560 pf v ssd v ddd v ssd r12 5.6 w r13 5.6 w r14 5.6 w c11 560 pf c12 560 pf c13 560 pf r22 9.1 k w v ssd v ssa v dda v ddd c31 1 nf c30 1 nf c33 220 nf c35 1500 m f (35 v) r21 10 k w c32 220 nf c34 1500 m f (35 v) c38 220 nf c39 220 nf c41 47 m f (35 v) c36 220 nf c37 220 nf c40 47 m f (35 v) gnd qgnd qgnd bead l6 l5 bead l7 bead gnd v dd v ss + 25 v - 25 v 1 2 3 13 sw2 14 rel2 16 en2 sw2 rel2 en2 21 pwm1 23 sw1 24 15 9 3 u1 tda8926j or tda8927j power stage 17 16 14 4 2 1 8 10 13 5 6 7 11 12 rel1 20 en1 sw1 rel1 en1 19 stab stab 18 v ssd 22 diagcur diag r16 24 w r15 24 w 4 or 8 w se 4 or 8 w se 8 w btl c17 220 nf c15 220 nf fig.12 two-chip class-d audio amplifier application diagram for tda8926j or tda8927j and TDA8929T. r21 and r22 are only necessary in btl applications with asymmetrical supply. btl: remove r6, r7, c23, c26 and c27 and close j5 and j6. c22 and c23 influence the low-pass frequency response and should be tuned with the real load (loudspeaker). inputs floating or inputs referenced to qgnd (close j1 and j4) or referenced to v ss (close j2 and j3) for an input signal ground reference.
2001 dec 11 21 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T this text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader .this text is here in _ white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader.this text is here inthis text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader. white to force landscape pages to be ... ha ndbook, full pagewidth mld634 c24 d1 tda8926j/27j & TDA8929T copper top, top view copper bottom, top view silk screen top, top view silk screen bottom, top view d2 l7 l5 in1 gnd in2 out1 out2 state of d art version 21 03-2001 u1 c25 c34 c35 c40 c26 c27 l6 on mute off c41 c16 c14 s1 r20 r1 r21 l2 l4 r22 c38 u2 c39 c36 r24 r5 r4 r6 r7 c2 c31 c30 c18 c19 c20 c21 c1 c9 c8 j4 j5 j6 j1 j3 j2 r19 c13 c33 c32 c11 c29 c28 r14 r12 c3 c43 r10 c12 c17 r16 c15 r15 r13 r11 c10 c5 c37 c22 c23 c44 v dd v ss in1 out1 out2 gnd in2 qgnd v dd v ss c7 c4 c6 fig.13 printed-circuit board layout for tda8926j or tda8927j and TDA8929T.
2001 dec 11 22 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T this text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader .this text is here in _ white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader.this text is here inthis text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader. white to force landscape pages to be ... handbook, full pagewidth mgw232 39 k w r1 30 k w r7 10 k w 100 nf c12 r2 1 k w r8 5.6 w r11 sumida 33 m h cdrh127-330 l4 sumida 33 m h cdrh127-330 l2 l1 bead l3 bead gnd 100 nf c1 220 nf c11 3 6 17 pwm2 5 4 8 9 10 12 15 n.c. 1 1 nf c10 input 2 input 1 j5 j6 d1 (5.6 v) in1 + in1 - gnd 2 11 sgnd1 sgnd2 s1 v ssa v ssd v ss1 v ss2 v dda v dd2 v dd1 gnd 1 2 1 2 1 2 qgnd qgnd qgnd qgnd out1 - out1 + out1 + out2 - out2 - out2 + boot2 boot1 out1 out2 v ddd v dd1 v dd2 v ss2 v ss1 v ddd v ssd v ssa v ssd 27 k w r3 7 220 nf c2 osc powerup v ssa 100 nf c14 mode v dda r18 200 k w d2 (7.5 v) v ddd on mute off u2 TDA8929T controller c3 330 pf c8 1 m f c13 100 nf c27 100 nf c36 470 nf c40 1 nf c41 1 nf c42 1 nf c43 1 nf c37 470 nf c28 100 nf c33 15 nf c26 15 nf c15 180 pf in2 + in2 - r6 10 k w c7 1 m f r5 10 k w 1 nf c9 c6 1 m f r4 10 k w j3 j1 qgnd qgnd inputs outputs power supply mode select j4 j2 v ss c5 1 m f c4 330 pf r12 5.6 w c24 560 pf v ssd v ddd v ssd r13 5.6 w r14 5.6 w r15 5.6 w c25 560 pf c34 560 pf c35 560 pf r10 9.1 k w v ssd v ssa v dda v ddd c17 1 nf c16 1 nf r9 10 k w c20 100 nf c21 100 nf c23 47 m f (35 v) c18 100 nf c19 100 nf c22 47 m f (35 v) gnd qgnd qgnd qgnd bead l6 l5 bead l7 bead gnd c30 100 nf c32 1500 m f (35 v) c29 100 nf c31 1500 m f (35 v) v dd v ss + 25 v - 25 v 1 2 3 13 sw2 14 rel2 16 en2 sw2 rel2 en2 21 pwm1 23 sw1 24 14 6 23 u1 tda8926th or tda8927th power stage 16 15 13 24 22 21 5 8 11 2 3 4 9 10 rel1 20 en1 sw1 rel1 en1 19 stab stab 19 v ss(sub) v ssd 17 lim v ssd 7 stab 18 22 diagcur diag r17 5.6 w r16 5.6 w 4 or 8 w se 4 or 8 w se 8 w btl c39 220 nf c38 220 nf 1, 12, 18, 20 n.c. fig.14 two-chip class-d audio amplifier application diagram for tda8926th or tda8927th and TDA8929T. r9 and r10 are only necessary in btl applications with asymmetrical supply. btl: remove r6, r7, c4, c7 and c8 and close j5 and j6. demodulation coils l2 and l4 should be matched in btl. inputs floating or inputs referenced to qgnd (close j1 and j4) or referenced to v ss (close j2 and j3).
2001 dec 11 23 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T this text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader .this text is here in _ white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader.this text is here inthis text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader. white to force landscape pages to be ... d book, full pagewidth mgw147 tda8926th/27th TDA8929T copper top, top view copper bottom, top view silk screen top, top view silk screen bottom, top view in1 in2 state of d art on mu off s1 l4 l3 c31 c32 c22 d1 c23 c37 c36 l6 version 2cth1 l5 l1 c29 c2 c9 c10 c8 c7 r4 r5 r7 r6 r3 c30 c35 c1 c15 c12 c21 j6 j5 c19 c13 l7 c3 c4 c5 c6 c18 c11 r11 c20 r8 r1 r2 c14 r12 r14 r13 r17 r16 r10 r9 c39 c43 j4 j2 j3 j1 qgnd c42 c41 c40 c16 c17 c38 r15 c25 c24 c34 c26 c33 jan 2001 u1 u2 c27 c28 l5 gnd out1 out2 v dd v ss fig.15 printed-circuit board layout for tda8926th or tda8927th and TDA8929T.
2001 dec 11 24 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 15.6 reference design bill of material table 1 two-chip class-d audio ampli?er pcb (version 2.1; 03-2001) for tda8926j or tda8927j and TDA8929T (see figs 12 and 13) component description value comments in1 and in2 cinch input connectors 2 farnell: 152-396 out1, out2, v dd , gnd and v ss supply/output connectors 2 augat 5kev-02; 1 augat 5kev-03 s1 on/mute/off switch pcb switch knitter at e 1 e m-o-m u1 power stage ic tda8926j/27j dbs17p package u2 controller ic TDA8929T so24 package l2 and l4 demodulation ?lter coils 33 m h2 sumida cdrh127-330 l5, l6 and l7 power supply ferrite beads 3 murata bl01rn1-a62 c1 and c2 supply decoupling capacitors for v dd to v ss of the controller 220 nf/63 v 2 smd1206 c3 clock decoupling capacitor 220 nf/63 v smd1206 c4 12 v decoupling capacitor of the controller 220 nf/63 v smd1206 c5 12 v decoupling capacitor of the power stage 220 nf/63 v smd1206 c6 and c7 supply decoupling capacitors for v dd to v ss of the power stage 220 nf/63 v smd1206 c8 and c9 bootstrap capacitors 15 nf/50 v 2 smd0805 c10, c11, c12 and c13 snubber capacitors 560 pf/100 v 4 smd0805 c14 and c16 demodulation ?lter capacitors 470 nf/63 v 2 mkt c15 and c17 resonance suppress capacitors 220 nf/63 v 2 smd1206 c18, c19, c20 and c21 common mode hf coupling capacitors 1 nf/50 v 4 smd0805 c22 and c23 input ?lter capacitors 330 pf/50 v 2 smd1206 c24, c25, c26 and c27 input capacitors 470 nf/63 v 4 mkt c28, c29, c30 and c31 common mode hf coupling capacitors 1 nf/50 v 2 smd0805 c32 and c33 power supply decoupling capacitors 220 nf/63 v 2 smd1206 c34 and c35 power supply electrolytic capacitors 1500 m f/35 v 2 rubycon zl very low esr (large switching currents) c36, c37, c38 and c39 analog supply decoupling capacitors 220 nf/63 v 4 smd1206 c40 and c41 analog supply electrolytic capacitors 47 m f/35 v 2 rubycon za low esr c43 diagnostic capacitor 180 pf/50 v smd1206 c44 mode capacitor 220 nf/63 v smd1206 d1 5.6 v zener diode bzx79c5v6 do-35 d2 7.5 v zener diode bzx79c7v5 do-35 r1 clock adjustment resistor 27 k w smd1206
2001 dec 11 25 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T r4, r5, r6 and r7 input resistors 10 k w 4 smd1206 r10 diagnostic resistor 1 k w smd1206 r11, r12, r13 and r14 snubber resistors 5.6 w ; >0.25 w 4 smd1206 r15 and r16 resonance suppression resistors 24 w 2 smd1206 r19 mode select resistor 39 k w smd1206 r20 mute select resistor 39 k w smd1206 r21 resistor needed when using an asymmetrical supply 10 k w smd1206 r22 resistor needed when using an asymmetrical supply 9.1 k w smd1206 r24 bias resistor for powering-up the power stage 200 k w smd1206 component description value comments 15.7 curves measured in reference design handbook, halfpage 10 2 10 1 10 - 1 10 - 3 10 - 2 mld627 10 - 2 10 - 1 1 p o (w) thd + n (%) 10 10 2 10 3 (1) (2) (3) fig.16 thd + n as a function of output power. 2 8 w se; v p = 25 v: (1) 10 khz. (2) 1 khz. (3) 100 hz. handbook, halfpage mld628 10 10 2 10 3 10 4 10 5 10 2 10 1 10 - 1 10 - 3 10 - 2 f i (hz) thd + n (%) (1) (2) fig.17 thd + n as a function of input frequency. 2 8 w se; v p = 25 v: (1) p o =10w. (2) p o =1w.
2001 dec 11 26 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T handbook, halfpage 10 2 10 1 10 - 1 10 - 3 10 - 2 mld629 10 - 2 10 - 1 1 p o (w) thd + n (%) 10 10 2 10 3 (1) (2) (3) fig.18 thd + n as a function of output power. 2 4 w se; v p = 25 v: (1) 10 khz. (2) 1 khz. (3) 100 hz. handbook, halfpage mld630 10 10 2 10 3 10 4 10 5 10 2 10 1 10 - 1 10 - 3 10 - 2 f i (hz) thd + n (%) (1) (2) fig.19 thd + n as a function of input frequency. 2 4 w se; v p = 25 v: (1) p o =10w. (2) p o =1w. handbook, halfpage 10 2 10 1 10 - 1 10 - 3 10 - 2 mld631 10 - 2 10 - 1 1 p o (w) thd + n (%) 10 10 2 10 3 (1) (2) (3) fig.20 thd + n as a function of output power. 1 8 w btl; v p = 25 v: (1) 10 khz. (2) 1 khz. (3) 100 hz. handbook, halfpage mld632 10 10 2 10 3 10 4 10 5 10 2 10 1 10 - 1 10 - 3 10 - 2 f i (hz) thd + n (%) (1) (2) fig.21 thd + n as a function of input frequency. 1 8 w btl; v p = 25 v: (1) p o =10w. (2) p o =1w.
2001 dec 11 27 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T handbook, halfpage 0 25 5 10 15 20 mld609 10 - 2 10 - 1 1 (2) p o (w) p (w) 10 10 2 10 3 (1) (3) fig.22 power dissipation as a function of output power. v p = 25 v; f i = 1 khz: (1) 2 4 w se. (2) 1 8 w btl. (3) 2 8 w se. handbook, halfpage 0 (3) (1) (2) 150 100 0 20 40 60 80 30 h (%) p o (w) 60 90 120 mld610 fig.23 efficiency as a function of output power. v p = 25 v; f i = 1 khz: (1) 2 4 w se. (2) 1 8 w btl. (3) 2 8 w se. handbook, halfpage 10 (3) (4) (1) (2) 35 200 0 40 80 120 160 15 p o (w) v p (v) 20 25 30 mld611 fig.24 output power as a function of supply voltage. thd+n= 0.5%; f i = 1 khz: (1) 1 4 w btl. (2) 1 8 w btl. (3) 2 4 w se. (4) 2 8 w se. handbook, halfpage 10 (3) (4) (1) (2) 35 200 0 40 80 120 160 15 p o (w) v p (v) 20 25 30 mld612 fig.25 output power as a function of supply voltage. thd + n = 10%; f i = 1 khz: (1) 1 4 w btl. (2) 1 8 w btl. (3) 2 4 w se. (4) 2 8 w se.
2001 dec 11 28 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T handbook, halfpage - 100 0 - 80 - 60 - 40 - 20 mld613 10 2 10 f i (hz) a cs (db) 10 3 10 4 10 5 (1) (2) fig.26 channel separation as a function of input frequency. 2 8 w se; v p = 25 v: (1) p o =10w. (2) p o =1w. handbook, halfpage - 100 0 - 80 - 60 - 40 - 20 mld614 10 2 10 f i (hz) a cs (db) 10 3 10 4 10 5 (1) (2) fig.27 channel separation as a function of input frequency. 2 4 w se; v p = 25 v: (1) p o =10w. (2) p o =1w. handbook, halfpage 20 45 25 30 35 40 mld615 10 2 10 f i (hz) g (db) 10 3 10 4 10 5 (1) (2) (3) fig.28 gain as a function of input frequency. v p = 25 v; v i = 100 mv; r s =10k w /c i = 330 pf: (1) 1 8 w btl. (2) 2 8 w se. (3) 2 4 w se. handbook, halfpage 20 45 25 30 35 40 mld616 10 2 10 f i (hz) g (db) 10 3 10 4 10 5 (1) (2) (3) fig.29 gain as a function of input frequency. v p = 25 v; v i = 100 mv; r s =0 w : (1) 1 8 w btl. (2) 2 8 w se. (3) 2 4 w se.
2001 dec 11 29 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T handbook, halfpage - 100 0 - 80 - 60 - 40 - 20 mld617 10 2 10 f i (hz) svrr (db) 10 3 10 4 10 5 (1) (2) (3) fig.30 svrr as a function of input frequency. v p = 25 v; v ripple = 2 v (p-p) with respect to gnd: (1) both supply lines in anti-phase. (2) both supply lines in phase. (3) one supply line rippled. handbook, halfpage 05 0 - 100 - 80 - 60 - 40 - 20 1 (1) (3) svrr (db) v ripple (v) 234 mld618 (2) fig.31 svrr as a function of v ripple (p-p). v p = 25 v; v ripple with respect to gnd: (1) f ripple = 1 khz. (2) f ripple = 100 hz. (3) f ripple =10hz. handbook, halfpage 0102030 v p (v) i q (ma) 37.5 100 0 20 40 60 80 mld619 fig.32 quiescent current as a function of supply voltage. r l = open. handbook, halfpage 0102030 v p (v) f clk (khz) 40 380 340 348 356 364 372 mld620 fig.33 clock frequency as a function of supply voltage. r l = open.
2001 dec 11 30 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T handbook, halfpage 0 5 1 2 3 4 mld621 10 - 1 10 - 2 p o (w) v ripple (v) 11010 2 (1) (2) fig.34 supply voltage ripple as a function of output power. v p = 25 v; 1500 m f per supply line; f i =10hz: (1) 1 4 w se. (2) 1 8 w se. handbook, halfpage 5 0 10 10 4 mld622 10 2 10 3 f i (hz) svrr (%) 1 2 3 4 (1) (2) fig.35 svrr as a function of input frequency. v p = 25 v; 1500 m f per supply line: (1) p o = 30 w into 1 4 w se. (2) p o = 15 w into 1 8 w se. handbook, halfpage 600 100 (3) f clk (khz) thd + n (%) 200 300 400 500 10 1 10 - 1 10 - 2 10 - 3 mld623 (1) (2) fig.36 thd + n as a function of clock frequency. v p = 25 v; p o = 1 w in 2 8 w : (1) 10 khz. (2) 1 khz. (3) 100 hz. handbook, halfpage 100 600 50 0 10 20 30 40 200 p o (w) f clk (khz) 300 400 500 mld624 fig.37 output power as a function of clock frequency. v p = 25 v; r l =2 8 w ; f i = 1 khz; th d+n= 10%.
2001 dec 11 31 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T handbook, halfpage 100 600 150 0 30 60 90 120 200 i q (ma) f clk (khz) 300 400 500 mld625 fig.38 quiescent current as a function of clock frequency. v p = 25 v; r l = open. handbook, halfpage 100 600 1000 0 200 400 600 800 200 v r(pwm) (mv) f clk (khz) 300 400 500 mld626 fig.39 pwm residual voltage as a function of clock frequency. v p = 25 v; r l =2 8 w .
2001 dec 11 32 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 16 package outline unit a max. a 1 a 2 a 3 b p cd (1) e (1) (1) eh e ll p q z y w v q references outline version european projection issue date iec jedec eiaj mm inches 2.65 0.30 0.10 2.45 2.25 0.49 0.36 0.32 0.23 15.6 15.2 7.6 7.4 1.27 10.65 10.00 1.1 1.0 0.9 0.4 8 0 o o 0.25 0.1 dimensions (inch dimensions are derived from the original mm dimensions) note 1. plastic or metal protrusions of 0.15 mm maximum per side are not included. 1.1 0.4 sot137-1 x 12 24 w m q a a 1 a 2 b p d h e l p q detail x e z c l v m a 13 (a ) 3 a y 0.25 075e05 ms-013 pin 1 index 0.10 0.012 0.004 0.096 0.089 0.019 0.014 0.013 0.009 0.61 0.60 0.30 0.29 0.050 1.4 0.055 0.419 0.394 0.043 0.039 0.035 0.016 0.01 0.25 0.01 0.004 0.043 0.016 0.01 e 1 0 5 10 mm scale so24: plastic small outline package; 24 leads; body width 7.5 mm sot137-1 97-05-22 99-12-27
2001 dec 11 33 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 17 soldering 17.1 introduction to soldering surface mount packages this text gives a very brief insight to a complex technology. a more in-depth account of soldering ics can be found in our data handbook ic26; integrated circuit packages (document order number 9398 652 90011). there is no soldering method that is ideal for all surface mount ic packages. wave soldering can still be used for certain surface mount ics, but it is not suitable for fine pitch smds. in these situations reflow soldering is recommended. 17.2 re?ow soldering reflow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied to the printed-circuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. several methods exist for reflowing; for example, convection or convection/infrared heating in a conveyor type oven. throughput times (preheating, soldering and cooling) vary between 100 and 200 seconds depending on heating method. typical reflow peak temperatures range from 215 to 250 c. the top-surface temperature of the packages should preferable be kept below 220 c for thick/large packages, and below 235 c for small/thin packages. 17.3 wave soldering conventional single wave soldering is not recommended for surface mount devices (smds) or printed-circuit boards with a high component density, as solder bridging and non-wetting can present major problems. to overcome these problems the double-wave soldering method was specifically developed. if wave soldering is used the following conditions must be observed for optimal results: use a double-wave soldering method comprising a turbulent wave with high upward pressure followed by a smooth laminar wave. for packages with leads on two sides and a pitch (e): C larger than or equal to 1.27 mm, the footprint longitudinal axis is preferred to be parallel to the transport direction of the printed-circuit board; C smaller than 1.27 mm, the footprint longitudinal axis must be parallel to the transport direction of the printed-circuit board. the footprint must incorporate solder thieves at the downstream end. for packages with leads on four sides, the footprint must be placed at a 45 angle to the transport direction of the printed-circuit board. the footprint must incorporate solder thieves downstream and at the side corners. during placement and before soldering, the package must be fixed with a droplet of adhesive. the adhesive can be applied by screen printing, pin transfer or syringe dispensing. the package can be soldered after the adhesive is cured. typical dwell time is 4 seconds at 250 c. a mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. 17.4 manual soldering fix the component by first soldering two diagonally-opposite end leads. use a low voltage (24 v or less) soldering iron applied to the flat part of the lead. contact time must be limited to 10 seconds at up to 300 c. when using a dedicated tool, all other leads can be soldered in one operation within 2 to 5 seconds between 270 and 320 c.
2001 dec 11 34 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 17.5 suitability of surface mount ic packages for wave and re?ow soldering methods notes 1. all surface mount (smd) packages are moisture sensitive. depending upon the moisture content, the maximum temperature (with respect to time) and body size of the package, there is a risk that internal or external package cracks may occur due to vaporization of the moisture in them (the so called popcorn effect). for details, refer to the drypack information in the data handbook ic26; integrated circuit packages; section: packing methods . 2. these packages are not suitable for wave soldering as a solder joint between the printed-circuit board and heatsink (at bottom version) can not be achieved, and as solder may stick to the heatsink (on top version). 3. if wave soldering is considered, then the package must be placed at a 45 angle to the solder wave direction. the package footprint must incorporate solder thieves downstream and at the side corners. 4. wave soldering is only suitable for lqfp, tqfp and qfp packages with a pitch (e) equal to or larger than 0.8 mm; it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm. 5. wave soldering is only suitable for ssop and tssop packages with a pitch (e) equal to or larger than 0.65 mm; it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm. package soldering method wave reflow (1) bga, hbga, lfbga, sqfp, tfbga not suitable suitable hbcc, hlqfp, hsqfp, hsop, htqfp, htssop, hvqfn, sms not suitable (2) suitable plcc (3) , so, soj suitable suitable lqfp, qfp, tqfp not recommended (3)(4) suitable ssop, tssop, vso not recommended (5) suitable
2001 dec 11 35 philips semiconductors preliminary speci?cation controller class-d audio ampli?er TDA8929T 18 data sheet status notes 1. please consult the most recently issued data sheet before initiating or completing a design. 2. the product status of the device(s) described in this data sheet may have changed since this data sheet was published. the latest information is available on the internet at url http://www.semiconductors.philips.com. data sheet status (1) product status (2) definitions objective data development this data sheet contains data from the objective specification for product development. philips semiconductors reserves the right to change the speci?cation in any manner without notice. preliminary data quali?cation this data sheet contains data from the preliminary specification. supplementary data will be published at a later date. philips semiconductors reserves the right to change the speci?cation without notice, in order to improve the design and supply the best possible product. product data production this data sheet contains data from the product specification. philips semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. changes will be communicated according to the customer product/process change noti?cation (cpcn) procedure snw-sq-650a. 19 definitions short-form specification ? the data in a short-form specification is extracted from a full data sheet with the same type number and title. for detailed information see the relevant data sheet or data handbook. limiting values definition ? limiting values given are in accordance with the absolute maximum rating system (iec 60134). stress above one or more of the limiting values may cause permanent damage to the device. these are stress ratings only and operation of the device at these or at any other conditions above those given in the characteristics sections of the specification is not implied. exposure to limiting values for extended periods may affect device reliability. application information ? applications that are described herein for any of these products are for illustrative purposes only. philips semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. 20 disclaimers life support applications ? these products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. philips semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify philips semiconductors for any damages resulting from such application. right to make changes ? philips semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. philips semiconductors assumes no responsibility or liability for the use of any of these products, conveys no licence or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified.
? koninklijke philips electronics n.v. 2001 sca73 all rights are reserved. reproduction in whole or in part is prohibited without the prior written consent of the copyright owne r. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. no liability will be accepted by the publisher for any consequence of its use. publication thereof does not con vey nor imply any license under patent- or other industrial or intellectual property rights. philips semiconductors C a worldwide company contact information for additional information please visit http://www.semiconductors.philips.com . fax: +31 40 27 24825 for sales of?ces addresses send e-mail to: sales.addresses@www.semiconductors.philips.com . printed in the netherlands 753503/01/pp 36 date of release: 2001 dec 11 document order number: 9397 750 08189

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