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single phase full wave direct pwm motor driver AM4961 data sheet 1 may. 2011 rev. 2. 4 bcd semiconductor manufacturing limited general description the AM4961 is a full wave driver ic with pwm con- trol function. it is used for single phase motor and is capable of speed control by changing output duty cycle. the AM4961 is available in ssop-16 and htssop- 14 packages. features built-in hall bias circuit built-in pwm speed control circuit built-in minimal speed setup circuit rotation speed indication (fg) rotation or lock state indication (rd) built-in thermal shutdown circuit lock protection output current limit application cpu cooler fan in pc brushless dc motor driver figure 1. package types of AM4961 ssop-16 htssop-14
single phase full wave direct pwm motor driver AM4961 data sheet 2 may. 2011 rev. 2. 4 bcd semiconductor manufacturing limited gs package (ssop-16) pin configuration out2 vcc nc vmin vpwm cosc fg rd vref hin- hb hin+ ct pgnd out1 gnd 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 gh package (htssop-14) pgnd out2 vcc vmin vpwm cosc fg rd 1 2 3 4 5 6 7 8 9 10 gnd ct vref hin- hb hin+ out1 pgnd 14 13 12 11 figure 2. pin configuration of AM4961 (top view)
data sheet 3 may. 2011 rev. 2. 4 bcd semiconductor manufacturing limited single phase full wave direct pwm motor driver AM4961 pin number pin name function htssop-14 ssop-16 1 1 out2 driver output 2 2 nc no connection 2 3 vcc power supply 3 4 vmin minimum duty setting 4 5 vpwm adjustable input 5 6 cosc oscillator capacitor 6 7 fg rotation speed indicator 7 8 rd rotation/lock state indicator 8 9 hin+ hall sensor input + 9 10 hb hall sensor bias regulator 10 11 hin- hall sensor input - 11 12 vref reference voltage regulator 12 13 ct lock and rotation se tting capacitor terminal 13 14 gnd ground for control circuit 14 15 out1 driver output 1 16 pgnd power ground pin description
single phase full wave direct pwm motor driver AM4961 data sheet 4 may. 2011 rev. 2. 4 bcd semiconductor manufacturing limited functional block diagram figure 3. functional block diagram of AM4961 a (b) a for 14-pin b for 16-pin lock shutdown and auto restart voltage reference hall bias thermal shutdown hysteresis amp control circuit oscillation circuit ct vcc vref hb hin+ hin- vmin vpwm cosc gnd pgnd out1 out2 rd fg 2 (3) 11 (12) 9 (10) 8 (9) 10 (11) 3 (4) 4 (5) 5 (6) 13 (14) (16) 14 (15) 1 (1) 7 (8) 6 (7) 12 (13) pre-driver
data sheet 5 may. 2011 rev. 2. 4 bcd semiconductor manufacturing limited single phase full wave direct pwm motor driver AM4961 hin- hin+ cosc (note 1) ct out1 out2 fg rd mode hl h l hll l rotation (drive) lh lhoff hl l off l l rotation (recirculate) lh loffoff hl h h hoffl off lock protection l h off h off hl l off off l l h off off off truth table note 1: v osc (h) > v pwm , v osc (l) < v pwm . package temperature range part number marking id packing type lead free green lead free green ssop-16 -30 to 90 o c AM4961gs-e1 AM4961gs-g1 AM4961gs AM4961gs-g1 tube AM4961gstr-e1 AM4961gstr-g1 am 4961gs AM4961gs-g1 tape & reel htssop-14 AM4961gh-e1 AM4961gh-g1 AM4961gh AM4961gh-g1 tube AM4961ghtr-e1 AM4961ghtr-g1 AM4961gh AM4961gh-g1 tape & reel circuit type package gs: ssop-16 e1: lead free AM4961 - tr: tape and reel blank: tube ordering information gh: htssop-14 g1: green bcd semiconductor's pb-free produc ts, as designated with "e1" suffix in the part number, are rohs compliant. products with "g1" suffix are available in green packages.
single phase full wave direct pwm motor driver AM4961 data sheet 6 may. 2011 rev. 2. 4 bcd semiconductor manufacturing limited parameter symbol value unit supply voltage v cc 18 v output current i out 1.0 a output voltage v out 18 v hb output current i hb 10 ma vpwm input voltage v pwm 6v rd output voltage v rd 18 v fg output voltage v fg 18 v rd output current i rd 10 ma fg output current i fg 10 ma power dissipation (note 3) p d ssop-16 0.8 w htssop-14 1.1 w storage temperature range t stg -55 to 150 o c esd (human body model) esd 2000 v esd (machine model) esd 250 v note 2: stresses greater than those li sted under "absolute maximu m ratings" may cause permanen t damage to the device. these are stress ratings only, and functiona l operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. exposure to "absolut e maximum ratings" for extended periods may affect device reliability. note 3: t a =25 o c, no external heatsink. parameter symbol min typ max unit supply voltage v cc 3.5 12 16 v hall input volta ge + (note 4) v in+ 0.2 3 v hall input voltage - (note 4) v in- 0.2 3 v ambient temperature t a -30 90 o c recommended operating conditions absolute maximum ratings (note 2) note 4: hall input voltage range includes the amplitude of signal.
data sheet 7 may. 2011 rev. 2. 4 bcd semiconductor manufacturing limited single phase full wave direct pwm motor driver AM4961 parameter symbol conditions min typ max unit quiescent current i q1 lock off 10.2 15 18.76 ma i q2 lock on 5.38 8 10.55 vref voltage v ref i ref =5ma 5.8 6 6.2 v output saturation voltage at high side v sath i source =200ma 1.0 1.17 v output saturation voltage at low side v satl i sink =200ma 0.2 0.3 v cosc frequency f osc c osc =100pf 18 25 32 khz cosc high level voltage v osch 3.45 3.6 3.75 v cosc low level voltage v oscl 1.83 1.95 2.07 v hall input hysteresis v hys 10 20 mv hall bias voltage v hb i hb =5ma 1.1 1.25 1.4 v ct high level voltage v cth 3.55 3.7 3.88 v ct low level voltage v ctl 1.55 1.7 1.85 v ct charge current i chg 1.5 2 2.85 a ct discharge current i dhg 0.14 0.2 0.285 a ct charge and discharge ratio r cd i chg /i dhg 8.5 10 14.5 fg output low level voltage v fgl i fg =5ma 0.2 0.3 v fg leakage current i lfg v fg =12v 30 a rd output low level voltage v rdl i rd =5ma 0.2 0.3 v rd leakage current i lrd v rd =12v 30 a (v cc =12v, t a =25 o c, unless otherwise specified.) electrical characteristics
single phase full wave direct pwm motor driver AM4961 data sheet 8 may. 2011 rev. 2. 4 bcd semiconductor manufacturing limited typical performance characteristics -50 0 50 100 150 200 0 4 8 12 16 20 v cc =12v rotation mode i q1 (ma) t a ( o c) 4 468 81012 12 14 16 16 18 0 4 8 12 16 20 i q1 (ma) v cc (v) t a =25 o c rotation mode figure 4.quiescent current vs. ambient temperature figure 5. quiescent current vs. supply voltage 0 200 400 600 800 1000 0.0 0.5 1.0 1.5 2.0 v sath (v) i out (ma) v cc =12v figure 6. output saturation voltage (high) vs. output current figure 7. output saturation voltage (low) vs. output current 0 200 400 600 800 1000 0.0 0.5 1.0 1.5 2.0 v satl (v) i out (ma) v cc =12v
data sheet 9 may. 2011 rev. 2. 4 bcd semiconductor manufacturing limited single phase full wave direct pwm motor driver AM4961 typical performance characteristics (continued) figure 8. power dissipation vs. ambient temperature figure 9. power dissipation vs. ambient temperature -20 0 20 40 60 80 100 0.0 0.2 0.4 0.6 0.8 1.0 1.2 p d (w) t a ( o c) 90 package: htssop-14 no external heatsink -20 0 20 40 60 80 100 120 0.0 0.2 0.4 0.6 0.8 1.0 1.2 p d (w) t a ( o c) 90 package: ssop-16 no external heatsink
single phase full wave direct pwm motor driver AM4961 data sheet 10 may. 2011 rev. 2. 4 bcd semiconductor manufacturing limited operating diagram note 5: 1. low speed setting mode when vpwm voltage is highe r than vmin pin voltage, motor speed is settable by vmin pin voltage. the mini- mum drive duty cycle is settable by comparing cosc oscillating voltage a nd vmin pin voltage. vpwm voltage is decided by variation of pwm duty. 2. variable speed setting mode when vpwm voltage is lowe r than vmin pin voltage, pwm control system works by comparing vpwm voltage and cosc voltage. if vpwm voltage is higher, the on duty cycle of the upper side transistors will be minimized and motor speed becomes lower. vice versa. 3. full speed rotation mode at a certain pwn duty, when vpwm voltage is lower than the low side of cosc output voltage, the motor will run at full speed. figure 10. operating diagram of AM4961 (note 5) m lowest speed setting voltage vpwm adjustable voltage f osc =25khz (c osc =100pf) vmin voltage cosc output low speed pwm variable high speed v cc 0v fg output v osc v osc
data sheet 11 may. 2011 rev. 2. 4 bcd semiconductor manufacturing limited single phase full wave direct pwm motor driver AM4961 typical application figure 11. typical application of AM4961 (note 6) note 6: *1. ground line layout pgnd is connected to motor supply stage and gnd is connected to control stage. all ground lines from control stage are connected to gnd. *2. stability of power supply c1 is employed to stabilize v cc . its capacitance is no less than 1 f. *3. hall input to avoid noise, the shortest line is recommended to con- nect with hall stage whic h has about 20mv hysteresis. thus, the ideal hall i nput is 50mv or over. *4. cosc capacitor when c cp is 100pf, the cosc frequency will be 25khz. *5. fg output fg output terminal is open collector output which varies with phase change. *6. rd output rd output terminal is open co llector output. it is low at rotation mode and high when stopped. *7. hb pin this pin is available to outpu t a 1.25v hall bias voltage. *8. vmin pin if this pin is disused, connect it directly with vpwm, the minimum duty cycle will be 10%. out2 out1 vcc gnd vmin ct vpwm vref cosc hin- fg hb rd hin+ hall AM4961 d1 c1 1 f or greater r1 27k r2 10k r4 39k r6 330k r7 100k r5 100k pwm vcc l1 r3 7.5k r8 68k c2 0.33 f c3 100pf c4 0.47 f 1 (1) 2 (3) 3 (4) 4 (5) 5 (6) 6 (7) 7 (8) 8 (9) 9 (10) 10 (11) 11 (12) 12 (13) 13 (14) 14 (15) pgnd (16)
single phase full wave direct pwm motor driver AM4961 data sheet 12 may. 2011 rev. 2. 4 bcd semiconductor manufacturing limited mechanical dimensions ssop-16 unit: mm(inch) 3.800(0.150) 4.000(0.157) 0.200(0.008) 0.300(0.012) 0.800(0.031) 0.635(0.025) bsc 0.900(0.035) 1.000(0.039) 0.100(0.004) 0.250(0.010) 1.350(0.053) 1.750(0.069) 0.400(0.016) 1.270(0.050) 4.700(0.185) 5.100(0.201) 5.800(0.228) 6.200(0.244) 0.650(0.026) 0.750(0.030) 0.200(0.008) 0.250(0.010) 1.350(0.053) 1.550(0.061) 0.020(0.001) 0.050(0.002) r0.150(0.006) r0.150(0.006) 0.250(0.010) see detail a 7 7 8 8 0.150(0.006) 0.250(0.010) 0 8 detail a note: eject hole, oriented hole and mold mark is optional.
data sheet 13 may. 2011 rev. 2. 4 bcd semiconductor manufacturing limited single phase full wave direct pwm motor driver AM4961 6. 350(0. 250) 6. 550(0. 258) 1. 470(0. 058) 1. 570(0. 062) 1. 450(0. 057) 1. 550(0. 061) 0. 750(0. 030) 0. 850(0. 033) 0. 650(0. 026) bsc 1. 300(0. 051) bsc 6. 200(0. 244) 6. 600(0. 260) 0. 340(0. 013) 0. 540(0. 021) 1. 200(0. 047) max 0.050(0. 002) 0.200(0. 008) 0.900(0. 035) 1.050(0. 041) 4. 300(0. 169) 4. 500(0. 177) see detail a 0. 250(0. 010) bsc r0. 090(0. 004) min r0. 090(0. 004) min 0. 200(0. 008) min 10 14 0. 450(0. 018) 0. 750(0. 030) 1. 000(0. 039) ref 0 8 detail a note: eject hole, oriented hole and mold mark is optional. 0.200(0.008) or 1.480(0.058) 0.280(0.011) or 1.610(0.063) 0.100(0.004) 0.150(0.006) 0.100(0.004) 0.190(0.007) 0.200(0.008) or 1.470(0.058) 0.240(0.009) or 1.570(0.062) base metal [ [ mechanical dimens ions (continued) htssop-14 unit: mm(inch) ? ?
important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing co., ltd. 800 yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd., shenzhen office unit a room 1203, skyworth bldg., gaoxin ave.1.s., nanshan district, shenzhen, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corp. 30920 huntwood ave. hayward, ca 94544, usa tel : +1-510-324-2988 fax: +1-510-324-2788 - headquarters bcd semiconductor manufacturing limited no. 1600, zi xing road, shanghai zizhu sc ience-based industrial park, 200241, china tel: +86-21-24162266, fax: +86-21-24162277 bcd semiconductor manufacturing limited important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing limited 800, yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 bcd semiconductor manufacturing limited main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd. shenzhen office advanced analog circuits (shanghai) corporation shenzhen office room e, 5f, noble center, no.1006, 3rd fuzhong road, futian district, shenzhen 518026, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corporation 30920 huntwood ave. hayward, ca 94544, u.s.a tel : +1-510-324-2988 fax: +1-510-324-2788 - ic design group advanced analog circuits (shanghai) corporation 8f, zone b, 900, yi shan road, shanghai 200233, china tel: +86-21-6495 9539, fax: +86-21-6485 9673 bcd semiconductor manufacturing limited http://www.bcdsemi.com bcd semiconductor manufacturing limited

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