p1/7 pde-3030f/31f-0 high-voltage monolithic ic ECN3030F/3031f ECN3030F/3031f is a driver ic for a three-phase bridge inverter which has mosfets or igbts for the outputs. especially, it is very suitable for controlling the speed of three-phase dc brushless motors to which converted ac100 ~ 115v power supplies are applied. the internal block diagram is shown in fig. 1. functions package * integrated charge pump circuit * integrated 3-phase distributor circuit * integrated pwm circuit * integrated over current protection circuit * integrated rotating direction sense circuit * integrated fg circuit fp-28dj(jedec) features * speed control for a 3-phase dc brushless motor is available with an external microprocessor. * bottom arm circuits can be operated in 20khz chopping frequency of pwm. edge- trigger pgv clock charge pump bottom arm driver top arm driver gnd cb clock saw wave generator vtr vs d2 c+ c2 +- cl d1 c1 + - vcc 3-phase distributer rtr ctr cmp + - vsp oc detection c0 vb vcc vb supply hu hw hv cr rs hall ics rw rv ru rwd vs pgu pgw mu mv mw ngu ngv ngw rs (15v) motor (7.5v) + - cmp vref filter note.1 fg mono- multi fg rm cm cb mcr note.1 ECN3030F:vref=0.50v ecn3031f:vref=1.23v fig.1 block diagram
p2/7 pde-3030f/31f-0 ECN3030F/3031f 1. general (1) type ECN3030F, ecn3031f (2) application 3-phase dc brushless motor (3) structure monolithic ic (4) package fp-28dj(jedec) 2. maximum allowable ratings (ta=25 c) no. items symbols terminal ratings unit condition 1 output device breakdown voltage vsm vs mu,mv,mw 250 v 2 supply voltage vcc vcc 18 v 3 input voltage vin vsp,rs,rwd hu,hv,hw -0.5 ~ vb+0.5 v 4 operating junction temperature tjop -20 ~ +125 c note 1 5 storage temperature tstg -40 ~ +150 c note1. thermal resistance (rj-a) is approximately 100 c/w. (when ics are installed on a print board.) the value of this resistance is determined by the result of the trial product. 3. recommended operating conditions no. items symbols terminal min typ max unit condition 1 supply voltage vs vs 10 141 185 v within allowable rating at tjop 2 vcc vcc 13.5 15 16.5 v
p3/7 pde-3030f/31f-0 ECN3030F/3031f 4. electrical characteristics (ta=25 c) unless otherwise specified, vcc=15v, vs=141v suffix t; top arm b; bottom arm suffix *;u,v,w phase no. items symbols terminal min typ max unit condition 1 standby current is vs - 2.0 4.0 ma vspECN3030F over current detection 1.107 1.230 1.353 v only for ecn3031f 16 input voltage vih hu,hv,hw 3.5 - - v 17 vil rwd - - 1.5 v 18 input current iih vsp - - 50 m a vsp=5.0v note 1 pull down resistance 19 iil hu,hv,hw rwd -100 - - m a hu,hv,hw,rwd=0v note 1 pull up resistance 20 vb output voltage vb cb 6.8 7.5 8.2 v ib=0ma 21 vb output current ib cb 25 - - ma delta vb 0.2v 22 output resistance at fg terminal rfg fg - 250 400 w note 3 ifg=1ma 23 reference voltage for fg pulse vref2 mcr vb 2/3 0.95 vb 2/3 vb 2/3 1.05 vnote 4 24 charge pump voltage vcp c+,vs 13.0 14.5 - v at stand-by note 6 note1. the pull up resistance and the pull down resistance are typically 200 k w . note2. please see note 2 in item 6 for determining the frequency of saw wave. note3. the equivalent circuit at fg terminal is shown in fig. 2 note4. please see note 3 in item 6 for determining the fg output pulse width. note5. the amplitude of saw(vsaww) is determined by the following equation, vsaww=vsawh-vsawl (v) note6. the charge pump voltage (vcp) is determined by the voltage between c+ and vs. fg vb fi g . 2 e q uivalent circuit around fg
p4/7 pde-3030f/31f-0 ECN3030F/3031f 5. function 5.1 truth table input u phase v phase w phase rwd hu hv hw top bottom top bottom top bottom hhlhlhhlll hhlllhllhl hhhllllhhl hlhlhllhll hlhhhllllh hllhllhllh lhhlllhllh lhllhllllh lhlhhllhll lllhlllhhl llhhlhllhl llhllhhlll - lllllllll - hhhllllll note1. top arm : output voltage for between pg* and m*. bottom arm : output voltage for between ng* and gnd. note2. it is possible to change the rotation direction of the motor by putting a signal into rwd terminal. a method of using is shown in item 5.7. 5.2 timing chart ( rwd = h ) hu hv hw output voltage input pgu-mu ngu-gnd pgv-mv ngv-gnd pgw-mw ngw-gnd fg t m
p5/7 pde-3030f/31f-0 ECN3030F/3031f 5.3 pwm operation the pwm signal is produced by comparing the input voltage at vsp terminal with the voltage from the internal saw wave. the duty of the pwm signal can be changed linearly by the triangular wave amplitude level, from the minimum point of vsawl to the maximum point of vsawh, and when the level is under vsawl, the duty becomes 0%, and when the level is over vsawh, the duty becomes 100%. in addition, chopping with the pwm signal is operated in the bottom arm circuit. 5.4 over current limiting operation this ic detects over current by checking the voltage drop at the external resistance rs. when the input voltage at rs terminal exceeds the internal reference voltage(vref), this ic turns off the output of the bottom arm circuit. after over current detection, reset operation is done at every period of the pwm signal. 5.5 fg operation one shot pulse is put out at this terminal synchronized with the rising edge of the synthesized signal of the hole signal hu, hv, hw. the pulse width t m is decided by the constant number which is determined by r and c at mcr terminal(see no.6 standard application.). one shot pulse is produced in a mono-multi circuit. this circuit has a retrigger feature which keeps the output signal high when a trigger is input during high signal of fg output. fg synthesized wave triggered p ulse mcr voltage fg output voltage usual operation retriggered operation vref2 t m t m t m 5.6 vcc under voltage detection operation when vcc becomes lower than the determined voltage, all arms operation and the charge pump operation are forced to stop. the detection voltage is typically 11.5v, and it also has a hysterisis of 0.5v. however, there may be a case when the operation is canceled under 2v of vcc. 5.7 rotating direction of the motor the rotating direction of the motor can be changed by inputting h or l signal to rwd terminal. please do not change this signal at operation. this may cause short through of the output device. however, it is ok if the vsp input voltage is below vsawl(1.7v typ.) before rwd input voltage change so that the short through is avoided. 0 vcc (v) ng*, pg*-m*, cl (v) *;u/v/w operation recover hysterisis fig 3. protection operation for vcc under voltage
p6/7 pde-3030f/31f-0 ECN3030F/3031f 6. standard application 6.1 external parts component recommended value usage remark c0 more than 0.22 m f for smoothing internal power supply(vb). stress voltage is vb c1,c2 1.0 m f 20% for charge pump stress voltage is vcc d1,d2 hitachi dfg1c4(glass mold) hitachi dfm1f4(resin mold) or equivalent parts for charge pump 400v/1.0a trr 100ns rs note 1 for current limiting ctr 1800 pf 5% for pwm note 2 rtr 22 k w 5% ru,rv,rw 5.6 k w 5% pull up resistance cm more than 1000pf for output pulse width at note 3 rm more than 10 k w fg terminal note1. the start up current is limited by the following equation. io = vref / rs (a) note2. the pwm frequency is approximately determined by the following equation. at the recommended value of cr, the error factor of ic is about 10%. fpwm = -1 / (2c r ln(1-3.5/5.5)) ; ln is natural logarithm = 0.494 / (c r) (hz) note3. the fg output pulse width is determined approximately by the following equation. t m 3 10 m s should be necessary. t m = -(cm rm ln(1-vb 2/3/vb)) = 1.1 cm rm (s) edge- trigger pgv clock charge pump bottom arm driver top arm driver gnd cb clock saw wave generator vtr vs d2 c+ c2 +- cl d1 c1 + - vcc 3-phase distributer rtr ctr cmp + - vsp oc detection c0 vb vcc vb supply hu hw hv cr rs hall ics rw rv ru rwd vs pgu pgw mu mv mw ngu ngv ngw rs (15v) motor (7.5v) + - cmp vref filter note.1 fg mono- multi fg rm cm cb mcr note.1 ECN3030F:vref=0.50v ecn3031f:vref=1.23v fig.4 block diagram with external parts 6.2 supply voltage sequence the order for turning on power supplies should be (1)vcc, vs (2)vsp. the order for turning off should be (1)vsp (2)vs, vcc. when the order is mistaken, there may be a case when the external bridge circuit is broken.
p7/7 pde-3030f/31f-0 ECN3030F/3031f 7. terminal 16 17 18 19 20 21 22 23 24 25 26 27 28 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 ngw ngv mcr ngu vcc cb rs vsp rwd vtr cr hu hv hw gnd cl vs c+ pgu mu mv pgv n.c pgw mw n.c fg n.c (marking side) fi g . 5 pin connection 8. package dimensions 1.27 0.10 0.41 14 1 28 18.13max 15 0.22 0.05 0.53 0.20 +0.10 -0.05 0.15 7.52 0.10 10.31 0.20 2.59max 0.15 -0.10 +0.05
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