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Data Sheet BOOST CONTROLLER General Description
AP3039 is a current mode high voltage low-side Nchannel MOSFET controller which is ideal for boost regulators. It contains all the features needed to implement single ended primary topology DC/DC converters. The input voltage range of AP3039 is from 5V to 27V. Its operation frequency is adjustable from 200kHz to 1MHz. The AP3039 has UVLO (Under Voltage Lock Out) circuit. It uses two external resistors to set the UVLO voltage. The AP3039 also has an over output voltage protection to limit the output voltage. The OVP voltage can be set through external resistors. If the output voltage is higher than the OVP high threshold point, it will disable the driver, when the output voltage drops to the OVP low threshold point, it will enable the driver. It also features a soft start to reduce the inrush current when power on, the soft start time can be set through an external capacitor. The AP3039 is available in QFN-3x3-16 and SOIC-14 packages.
AP3039 Features
* * * * * * * * * Input Voltage Range 5V to 27V 0.6A Peak MOSFET Gate Driver 20ns Quick MOSFET Gate Driver Duty Cycle Limit of 90% Programmable UVLO Programmable Over Voltage Protection Cycle by Cycle Current Limit Adjustable Soft-Start Adjustable Operation Frequency from 200kHz to 1MHz
Applications
* * * LED Lighting Notebook LCD Display Modules
QFN-3x3-16
SOIC-14
Figure 1. Package Types of AP3039
Dec. 2009 Rev. 1. 4 1
BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Pin Configuration
FN Package (QFN-3x3-16)
Pin 1 Dot by Marking OV UVLO SS COMP
16 15 14 13 12
AP3039
EN VIN NC VCC
1 2 3 4 5 6 7 8
NC FB SHDN AGND
EP
11 10 9
Exposed PAD
OUT PGND RT CS
M Package (SOIC-14)
UVLO OV EN VIN VCC OUT
PGND
1 2 3 4 5 6 7
14 13 12 11 10 9 8
SS COMP FB SHDN AGND CS RT
Figure 2. Pin Configuration of AP3039 (Top View)
Dec. 2009 Rev. 1. 4 2
BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Pin Description
Pin Number 16-pin 1 2 3, 12 14-pin 3 4 Pin Name EN VIN NC Enable pin Input supply pin, must be locally bypassed No connection (for QFN-3x3-16 package only) 6V linear regulator output pin. VCC is used to bias the gate driver for the external MOSFET. If VIN is less than 8.5V, the VCC is equal to VIN minus drop voltage across bypass switch. If VIN is less than 6V, connect VCC to VIN. This pin should be bypassed to GND (recommend to connect with AGND pin) with a ceramic capacitor Connect this pin to the gate of external MOSFET, the gate driver has 0.6A peak current capability Power ground An external resistor connected from this pin to GND to set the operating frequency Sense switch current pin, which is used for current mode control and for current limit Reference ground This pin can be connected to current matched chip and receives error signal used to shut down the system Voltage Feedback Pin. The reference voltage is 500mV Compensation Pin. This pin is the output of the internal Error Amplifier An external soft start time capacitor is connected from this pin to ground and is charged by internal 12A current source to control regulator soft start time Two resistors connected from this pin to ground and the VIN pin respectively to set start up and shutdown level Over output voltage protection pin Exposed backside pad. Solder to the circuit board ground plane with sufficient copper connection to ensure low thermal resistance (for QFN-3x3-16 package only) Function
AP3039
4
5
VCC
5 6 7 8 9 10 11 13 14 15 16
6 7 8 9 10 11 12 13 14 1 2
OUT PGND RT CS AGND SHDN FB COMP SS UVLO OV EP
Dec. 2009 Rev. 1. 4 3
BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Functional Block Diagram AP3039
REFERENCE
1.25V
BYPASS SWITCH REGULATOR
VIN EN UVLO
2 (4) 1 (3) 15 (1)
1.25V
4 (5)
3V
VCC
EN
REFERENCE
R 22A CLK S
Q
5 (6)
DRIVER
OUT PGND CS
6 (7)
110mV
OV
16 (2)
1.25V 22A
LOGIC LEB
8 (9)
+
SHDN
10 (11)
SAW
+
13 (13)
OSTD
0.5V EA 12A
COMP
11 (12) 14 (14)
FB SS AGND
RT
7 (8)
OSL
CLK
9 (10)
SAW
A (B) A QFN-3x3-16 B SOIC-14
Figure 3. Functional Block Diagram of AP3039
Dec. 2009 Rev. 1. 4 4
BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Ordering Information
AP3039 Circuit Type Package FN: QFN-3x3-16 M: SOIC-14
Package QFN-3x3-16 SOIC-14 -40 to 85 C
o
AP3039
G1: Green TR: Tape and Reel Blank: Tube
Temperature Range
Part Number AP3039FNTR-G1 AP3039M-G1 AP3039MTR-G1 B2A
Marking ID 3039M-G1 3039M-G1
Packing Type Tape & Reel Tube Tape & Reel
BCD Semiconductor's products, as designated with "G1" suffix in the part number, are RoHS compliant and Green.
Dec. 2009 Rev. 1. 4 5
BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Absolute Maximum Ratings (Note 1)
Parameter Input Voltage VCC Pin Voltage OUT Pin Voltage Feedback Pin Voltage UVLO Pin Voltage CS Pin Voltage SHDN Pin Voltage Enable Pin Voltage OV Pin Voltage Thermal Resistance (Junction to Ambient, no Heat sink) Operating Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10sec) ESD (Machine Model) ESD (Human Body Model) Symbol VIN VCC VOUT VFB VUVLO VCS VSHDN VEN VOV JA TJ TSTG TLEAD QFN-3x3-16 SOIC-14 150 -65 to 150 260 200 2000 Value 30 10 10 7 7 7 7 VIN 7 60 102 Unit V V V V V V V V V
oC/W oC oC o
AP3039
C
V V
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter Symbol Min Max Unit
Input Voltage
Operating Frequency Operating Temperature
VIN
f TA
5
200 -40
27
1000 85
V
kHz
oC
Dec. 2009 Rev. 1. 4 6
BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Electrical Characteristics
(VIN=12V, VEN =VIN, TA=25oC, unless otherwise specified.)
Parameter Input Voltage Symbol VIN Conditions VCC=VIN VCC bypassed to GND through a 0.47F capacitor Min 5 6 490 500 35 No switching VEN=0V 9VVIN27V 6VVIN<9V 5.5 5 50 ICC=0mA, fOSC200kHz, 6VVIN<8.5V VIN increasing 300 8.7 260 4.7 300 Adjustable, RT=51k to 150k 200 1.22 1.25 22 90 1.20 110 1.25 470 2.0 V 0.5 2.0 0.5 V 130 1.30 1000 1.28 mA mV V mV V mV kHz V A mV V A/V 3 1 6 Typ Max 6 V 27 510 100 5 2 6.5 mV nA mA A V Unit
AP3039
Feedback Voltage FB Pin Bias Current Quiescent Current Shutdown Quiescent Current VCC Voltage VCC Current Limit Drop Voltage Across Bypass Switch Bypass Switch Turn-off Threshold Bypass Switch Threshold Hysteresis VCC Pin UVLO Rising Threshold VCC Pin UVLO Falling Hysteresis Oscillator Frequency UVLO Threshold UVLO Hysteresis Current Source Current Limit Threshold Voltage RT Voltage Error Amplifier Transconductance EN Pin Threshold Voltage
VFB IFB IQ ISHDN VCC ICC-LIM VIN-VCC VBYP-HI
VBYP-HYS VIN decreasing VCC-HI VCC-HYS fOSC VUVLO IHYS VCS VRT GS VEH VEL
SHDN Pin Threshold Voltage
VIH VIL
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BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Electrical Characteristics (Continued)
(VIN=12V, VEN =VIN, TA=25oC, unless otherwise specified.)
Parameter OV Threshold OV Hysteresis Current Source Maximum Duty Cycle Soft Start Current Source Out Pin Rise Time Out Pin Fall Time OUT Dropout Voltage (VCC-VOUT) OUT Low Voltage Level (VOUT) Thermal Shutdown Temperature Thermal Shutdown Hysteresis Symbol VOV IOV-HYS DMAX ISS tRISE tFALL VOUT-H VOUT-L TOTSD THYS Out Pin Load =1nF Out Pin Load =1nF IOUT=50mA IOUT=100mA Conditions Min Typ 1.25 22 90 12 20 20 0.25 0.25 160 20 0.75 0.75 93 Max Unit V A % A ns ns V V
o
AP3039
C
oC
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BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Typical Performance Characteristics AP3039
95 94 93 92
95
IOUT =160mA IOUT = 200mA
94 93 92
fOSC =400kHz fOSC= 1MHz
Efficiency (%)
Efficiency (%)
91 90 89 88 87 86 85 -50 -25 0
91 90 89 88
VIN=12V, VOUT=33V, fOSC=1MHz L=22H, CIN=10F, COUT=10F
25 50
o
87 86 85 6 9 12
IOUT=160mA, VOUT=33V, TA=25 C L=22H, CIN=10F; COUT=10F
15 18 21 24 27
O
75
100
125
Temperature ( C)
Input Voltage (V)
Figure 4. Efficiency vs. Case Temperature
Figure 5. Efficiency vs. Input Voltage
95 90 85
92.0
91.5
Efficiency (%)
80 75 70 65 60 20
Efficiency (%)
91.0
90.5
90.0
VIN=12V, VOUT=33V, fOSC=1MHz, TA=25 C L=22H, CIN=10F, COUT=10F
40 60 80 100 120 140 160 180 200
O
89.5
VIN=12V, VOUT=33V, fOSC=1MHz, TA=25 C L=22H, CIN=10F, COUT=10F
18 20 22 24 26 28 30 32 34
O
89.0 16
Output Current (mA)
Output Voltage (V)
Figure 6. Efficiency vs. Output Current
Figure 7. Efficiency vs. Output Voltage
Dec. 2009 Rev. 1. 4 9
BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Typical Performance Characteristics (Continued) AP3039
2.0 1.8 1.6
6.5 6.4 6.3
Quiescent Current (mA)
VCC Voltage (V)
1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 5 10 15 20 25
O
6.2 6.1 6.0 5.9 5.8 5.7 5.6
-50 C O 25 C O 85 C O 125 C
30
-50 C O 25 C O 85 C O 125 C
6 9 12 15 18 21 24 27
O
5.5
Input Voltage (V)
Input Voltage (V)
Figure 8. Quiescent Current vs. Input Voltage
Figure 9. VCC Voltage vs. Input Voltage
1.20
1200 1100
1.15
1000 900
Frequency (MHz)
1.10
Frequency (kHz) RT=51k
800 700 600 500 400
1.05
1.00
0.95
300 200 100 40 80 120 160 200 240 280 320 360 400
0.90 -50
-25
0
25
50
O
75
100
125
Case Temperature ( C)
RT (k)
Figure 10. Switching Frequency vs. Case Temperature
Figure 11. Switching Frequency vs. RT Value
Dec. 2009 Rev. 1. 4 10
BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Typical Performance Characteristics (Continued) AP3039
1.30 1.29
1.260
1.255 1.28
RT Voltage (V)
1.27 1.26 1.25 1.24 1.23 1.22 1.21 1.20 5 10 15 20 25
O
UVLO Voltage (V)
1.250
1.245
O
-50 C O 25 C O 85 C O 125 C
30
1.240
1.235
-50 C O 25 C O 85 C O 125 C
1.230
5
10
15
20
25
30
Input Voltage (V)
Input Voltage (V)
Figure 12. RT Voltage vs. Input Voltage
Figure 13. UVLO Voltage vs. Input Voltage
1.280 1.275 1.270
25.0 24.5 24.0
UVLO Current(A)
OV Voltage (V)
1.265 1.260 1.255 1.250 1.245 1.240 1.235 1.230 5 10 15 20 25
23.5 23.0 22.5 22.0 21.5 21.0 20.5 20.0 5 10 15 20 25
-40 C O 25 C O 85 C O 125 C
30
O
-40 C O 25 C O 85 C O 125 C
30
O
Input Voltage (V)
Input Voltage (V)
Figure 14. OV Voltage vs. Input Voltage
Figure 15. UVLO Current vs. Input Voltage
Dec. 2009 Rev. 1. 4 11
BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Typical Performance Characteristics (Continued) AP3039
25.0 24.5 24.0
0.510 0.508 0.506 0.504
OV Current (A)
23.5
FB Voltage (V)
23.0 22.5 22.0 21.5 21.0 20.5 20.0 5 10 15 20
0.502 0.500 0.498 0.496 0.494 0.492 0.490 -50 -25 0 25 50
O
-50 C O 25 C O 85 C O 125 C
25 30
O
75
100
125
Input Voltage (V)
Case Temperature ( C)
Figure 16. OV Current vs. Input Voltage
Figure 17. Feedback Voltage vs. Case Temperature
450 425 400
400 375
OUT Low Voltage (mV)
375 350 325 300 275 250 225 200 175 150 -50 -25 0 25 50
O
OUT Dropout Voltage (mV)
350 325 300 275 250 225 200 175 150 -50 -25 0 25 50
o
75
100
125
75
100
125
Temperature ( C)
Case Temperature ( C)
Figure 18. OUT Low Voltage vs. Case Temperature
Figure 19. OUT Dropout Voltage vs. Case Temperature
Dec. 2009 Rev. 1. 4 12
BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Application Information
Operation
AP3039 is a boost DC-DC controller with adjustable operation frequency. Current mode control scheme provides excellent line and load regulation. Operation can be best understood by referring to Figure 3. At the start of each oscillator cycle, the SR latch is set and external power switch Q1 (see Figure 20) turns on and the switch current will increase linearly. The voltage on external sense resistor RCS (see Figure 20), connected from CS pin to GND, is proportional to the switch current. This voltage is added to a stabilizing ramp and the result is fed into the non-inversion input of the PWM comparator. When this non-inversion input voltage exceeds inversion input voltage of PWM comparator which is the output voltage of the error amplifier EA, the SR latch is reset and the external power switch turns off. The voltage level at inversion input of PWM comparator sets the peak current level to keep the output voltage in regulation. This voltage level is the amplified signal of the voltage difference between feedback voltage and reference voltage of 0.5V. So, a constant output current can be provided by this operation mode. Input Under-Voltage Detector AP3039 contains an Under Voltage Lock Out (UVLO) circuit. Two resistors R1 and R2 are connected from UVLO pin to ground and VIN pin respectively (see Figure 20). The resistor divider must be designed such that the voltage on the UVLO pin is higher than 1.25V when VIN is in the desired operating range. If the voltage on the pin is below under voltage threshold, all functions of AP3039 are disabled, but the system will remain in a low power standby state. UVLO hysteresis is accomplished through an internal 22A current source which switched on or off 22A current into the impedance of the set-point divider. When the UVLO threshold is exceeded, the current source is activated to instantly raise the voltage on the UVLO pin. When the UVLO pin voltage falls below the threshold the current source is turned off, causing the voltage on the UVLO pin to fall. The formula for UVLO can be expresses as blow: For Input Threshold Voltage VIN_THRESHOLD=1.25V*(R1+R2)/R2 Dec. 2009 Rev. 1. 4 13 For Input Hysteresis Voltage VIN-HYSTERESIS=22A*R1
AP3039
Over Voltage Protection
AP3039 has an over voltage protection (OVP) circuit. The OV Pin is connected to the center tap of R3 and R4 resistor voltage-divider from the high voltage output to GND (see Figure 20). When the loop is open or the output voltage becomes excessive in any case, result the voltage on OV pin exceeds 1.25V, all functions of AP3039 will be disabled, and the output voltage will fall. OVP hysteresis is accomplished with an internal 22A current source and the operation mode is the same as UVLO. The formula for OVP can be expresses as blow: For OVP Voltage VOVP=1.25V*(R3+R4)/R4 For OVP Hysteresis Voltage VOVP-HYSTERESIS=22A*R3 Frequency Selection An external resistor RT, connected from RT pin to GND, is used to set the operating frequency (see Figure 20). Operation frequency range is from 200kHz to 1MHz (see Table 1). High frequency operation optimizes the regulator for the smallest component size, while low frequency operation can reduce the switch losses.
Table 1. Frequency Selection
Resistance of RT (k) 390 147 95 68 51 Operating Frequency (kHz) 200 400 600 800 1000
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Data Sheet BOOST CONTROLLER Application Information (Continued)
Soft Start AP3039 has a soft start circuit to limit the inrush current during startup. The time of soft start is controlled by an internal 12A current source and an external soft start capacitor CSS connected from SS pin to GND (see Figure 20). The effective CSS voltage for Soft Start is from 0 to 2.3V, the time of Soft Start is: tSS = CSS*2.3V/12A
AP3039
VCC Pin Application Description The AP3039 includes an internal low dropout linear regulator with the output pin VCC. This pin is used to power internal PWM controller, control logic and MOSFET driver. On the condition that VIN8.5V, the regulator generates a 6V supply. If 6VVIN8.5V, the VCC is equal to VIN minus drop voltage across bypass switch. When VIN is less than 6V, connect VCC to VIN.
Typical Application
VIN : 6V to 27V
CIN
L
D1
VOUT
R1
VIN UVLO OUT CS
RCS
COUT
Q1
R3
R2 CV OFF ON
VCC
R5 R4
EN RT OV FB SHDN GND
OFF ON
RT CSS RC CC
SS COMP
R6
U1 AP3039
Figure 20. Application Circuit 1 of AP3039 (Note 2)
Dec. 2009 Rev. 1. 4 14
BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Typical Application (Continued)
VIN : 6V to 27V L
D1
AP3039
R1
CIN
VIN UVLO VCC
R2 CV
OUT CS
Q1
R3 1W or 3W LED
RCS
R4
COUT
OFF ON
EN RT
OV
RT CSS
SS
SHDN
ON OFF
FB COMP
RC CC
GND
U1 AP3039
R5
Figure 21. Application Circuit 2 of AP3039 (Driving Single 1W or 3W LED Lighting, Note 3)
VIN : 6V to 27V L
D1
R1
CIN
VIN UVLO VCC
R2 CV
OUT CS
Q1
R3
RCS
R4
COUT
OFF ON
EN RT
OV
RT CSS
SS
SHDN
ON OFF
FB COMP
RC CC
GND
U1 AP3039
R5
Figure 22. Application Circuit 3 of AP3039 (Backlight Driver, Note 4)
Dec. 2009 Rev. 1. 4 15
BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Typical Application (Continued)
Note 2: The output voltage is decided by R5, R6 and the internal 0.5V reference. The output voltage accuracy is determined by the accuracy of R5 and R6, for which the precise resistors are preferred. VOUT= 0.5V * (R5 + R6 ) R6 Note 3: In this application, the LED current is controlled by the feedback resistor R5. LEDs current accuracy is determined by regulator`s feedback threshold accuracy and is independent of the LEDs` forward voltage variation. So the precise resistors are the better choices. The resistance of R5 is in inverse proportion to the LED current since the feedback reference is fixed at 0.5V. The relation of R5 and the LED current can be expressed as below: R5=
0.5V ILED
AP3039
Note 4: The summation of LED current is determined by R5 and internal 0.5V reference same as the illustration in Figure 22. More detailed application information please refer to application note.
Dec. 2009 Rev. 1. 4 16
BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Mechanical Dimensions QFN-3x3-16 Unit: mm(inch) AP3039
2.900(0.114) 3.100(0.122)
Pin 1 Identification
Pin 1 Identification
Pin1
0.180(0.007) 0.280(0.011) 2.900(0.114) 3.100(0.122) 0.050(0.020) BSC Bottom View Exposed Pad
0.350(0.014) 0.450(0.018)
1.500(0.059) Ref
1.500(0.059) Ref
0.700(0.028) 0.900(0.035) 0.178(0.007) 0.228(0.009) 0.000(0.000) 0.050(0.002)
Dec. 2009 Rev. 1. 4 17
BCD Semiconductor Manufacturing Limited
Data Sheet BOOST CONTROLLER Mechanical Dimensions (Continued) SOIC-14 Unit: mm(inch) AP3039
0.700(0.028)
7
A
0.100(0.004) 0.250(0.010)
0.280(0.011) x45 0.480(0.019)x45
8
8
0 8
9.5
7
1.350(0.053) 1.750(0.069)
3.800(0.150) 4.000(0.157)
0.330(0.013) 0.510(0.020) 1.000(0.039)
1.270(0.050) A
0.250(0.010) 0.200(0.008)MIN
20:1
5.800(0.228)
6.200(0.244)
R0.200(0.008) R0.200(0.008)
1 5
1.300(0.051)
0.500(0.020) 0.600(0.024)
2.000(0.079) Depth 0.060(0.002) 0.100(0.004)
0.250(0.010)
Note: Eject hole, oriented hole and mold mark is optional.
Dec. 2009 Rev. 1. 4 18
BCD Semiconductor Manufacturing Limited
0.190(0.007) 0.250(0.010)
8.550(0.337) 8.750(0.344)
8
BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
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