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data sheet single phase full wave direct pwm motor driver AM4962 apr. 2011 rev. 1. 2 bcd semiconductor manufacturing limited 1 general description the AM4962 is a full wave driver ic with direct pwm control function. it is used for single phase motor and is capable of speed control by pwm pulse. the AM4962 is available in htssop-14 and ssop-16 packages. features ? the motor speed is controlled by pwm pulse directly ? built-in triangle wave circuit without extra oscillation capacitor ? built-in hall bias circuit ? built-in minimal speed setup circuit ? slope k* adjustable ? rotation speed indication (fg) ? rotation or lock state indication (rd) ? built-in thermal shutdown circuit ? lock protection and auto-restart ? output current limit * slope k is the slope of output pwm duty vs. input pwm duty applications ? cpu cooler fan in pc ? brushless dc motor driver figure 1. package types of AM4962 htssop-14 ssop-16
data sheet single phase full wave direct pwm motor driver AM4962 apr. 2011 rev. 1. 2 bcd semiconductor manufacturing limited 2 2 3 4 5 6 7 8 15 14 13 12 11 10 9 16 1 out2 nc vcc vmin pwm cf fg rd hin+ hb hin- radj ct gnd out1 pgnd 1 2 3 4 5 6 7 14 13 12 11 9 8 10 out2 vcc vmin pwm cf fg rd hin+ hb hin- radj ct gnd out1 pgnd pgnd pin configuration gh package (htssop-14) gs package (ssop-16) figure 2. pin configurat ion of AM4962 (top view)
data sheet single phase full wave direct pwm motor driver AM4962 apr. 2011 rev. 1. 2 bcd semiconductor manufacturing limited 3 pin description pin number htssop-14 ssop-16 pin name function 1 1 out2 driver output 2 2 nc no connection 2 3 vcc power supply 3 4 vmin minimum duty setting 4 5 pwm pwm pulse input 5 6 cf pwm filter 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 radj slope k adjustable terminal 12 13 ct lock and rotation setting capacitor terminal 13 14 gnd ground for control circuit 14 15 out1 driver output 1 16 pgnd power ground
data sheet single phase full wave direct pwm motor driver AM4962 apr. 2011 rev. 1. 2 bcd semiconductor manufacturing limited 4 functional block diagram lock shutdown and auto restart hall bias thermal shutdown hysteresis amp control circuit triangle wave ct vcc radj hb hin+ hin- vmin pwm cf gnd pgnd out1 out2 rd fg 1 (1) pre- driver v+ 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) (16) v+ v+ v+ 104k 42k 90k 54k 51k 56k 93k 18k a (b) a htssop-14 b ssop-16 figure 3. functional block diagram of AM4962 truth table (note 1) items in- in+ cf ct out1 out2 fg mode 1 h l h l l rotation 2 l h l l h off pwm off 3 h l off l l rotation recirculate 4 l h h l l off off pwm off 5 h l h off l 6 l h l h off h off lock protection note 1: v cf (h)=5v, v cf (l) =1v, v ct (h)=5v, v ct (l) =0
data sheet single phase full wave direct pwm motor driver AM4962 apr. 2011 rev. 1. 2 bcd semiconductor manufacturing limited 5 ordering information AM4962 - circuit type g1: green package gh: htssop-14 gs: ssop-16 package temperature range part number marking id packing type AM4962gh-g1 AM4962gh-g1 tube htssop-14 AM4962ghtr-g1 AM4962gh-g1 tape & reel AM4962gs-g1 AM4962gs-g1 tube ssop-16 -30 to 90 c AM4962gstr-g1 AM4962gs-g1 tape & reel bcd semiconductor's pb-free products, as designated with "g1" suffix in the part number, are rohs compliant and green. blank: tube tr: tape & reel
data sheet single phase full wave direct pwm motor driver AM4962 apr. 2011 rev. 1. 2 bcd semiconductor manufacturing limited 6 absolute maximum ratings (note 2) 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 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 ssop-16 0.8 w power dissipation p d htssop-14 1.1 w storage temperature range t stg -55 to 150 c ssop-16 156 thermal resistance (junction to ambient) ja htssop-14 114 c/w esd (human body model) esd 2000 v esd (machine model) esd 250 v note 2: 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 co nditions? is not implied. exposure to ?absolute maximum ratings? for extended periods may affect device reliability. recommended operating conditions parameter symbol min typ max unit supply voltage v cc 3.5 12 16 v hall input voltage + (note 3) v in+ 0.2 3 v hall input voltage - (note 3) v in- 0.2 3 v pwm high level voltage v pwm v cc -1 v ambient temperature t a -30 90 c note 3: hall input voltage range includes the amplitude of signal.
data sheet single phase full wave direct pwm motor driver AM4962 apr. 2011 rev. 1. 2 bcd semiconductor manufacturing limited 7 electrical characteristics (v cc =12v, t a =25c, unless otherwise specified.) parameter symbol conditions min typ max unit i q1 v ct =0 10.18 15 18.76 quiescent current i q2 v ct =5v 5.38 8 10.55 ma 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 cpwm frequency f osc 18 25 32 khz cf high level voltage v cfh v pwm =0 3.2 3.6 3.75 v cf low level voltage v cfl v pwm =5 1.83 1.95 2.15 v vmin voltage v min 3.4 3.7 4.0 v radj pin voltage v adj v pwm =0 3.6 3.8 4.4 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
data sheet single phase full wave direct pwm motor driver AM4962 apr. 2011 rev. 1. 2 bcd semiconductor manufacturing limited 8 0 100 200 300 400 500 600 700 800 900 1000 0.0 0.4 0.8 1.2 1.6 2.0 v sath1 v sath2 v satl1 v satl2 output saturation voltage (v) output current (ma) v cc =12v, t a =25 o c -20 0 20 40 60 80 100 0.0 0.2 0.4 0.6 0.8 1.0 1.2 allowable power dissipation (w) ambient temperature ( o c) 90 package: htssop-14 4 6 8 1012141618 0 4 8 12 16 20 t a =25 o c i q1 (v ct =l) i q2 (v ct =h) quiescent current (ma) supply voltage (v) -50 -25 0 25 50 75 100 125 0 4 8 12 16 20 v cc =12v i q1 (v ct =l) i q2 (v ct =h) quiescent current (ma) ambient temperature ( o c) typical performance characteristics figure 4. quiescent current vs. ambient temperature figure 5. quiescent current vs. supply voltage figure 6. output saturation voltage vs. figure 7. power dissipation vs. output current ambient temperature
data sheet single phase full wave direct pwm motor driver AM4962 apr. 2011 rev. 1. 2 bcd semiconductor manufacturing limited 9 -20 0 20 40 60 80 100 120 0.0 0.2 0.4 0.6 0.8 1.0 1.2 allowed power dissipation (w) ambient temperature ( o c) 90 package: ssop-16 typical performance characteristics (continued) figure 8. power dissipation vs. ambient temperature
data sheet single phase full wave direct pwm motor driver AM4962 apr. 2011 rev. 1. 2 bcd semiconductor manufacturing limited 10 operating diagram figure 9. o perating diagram of AM4962
data sheet single phase full wave direct pwm motor driver AM4962 apr. 2011 rev. 1. 2 bcd semiconductor manufacturing limited 11 0 102030405060708090100 0 20 40 60 80 100 max. duty cycle output duty cycle (%) input pwm duty cycle (%) min. duty cycle slope k out2 out1 vcc gnd vmin ct pwm radj cf hin- fg hb rd hin+ hall AM4962 d1 c1 1 f vcc l1 c3 1 f c2 0.47 f 1 (1) pgnd v+ 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) typical application (note 4) figure 10 application 1 (default) r1 r2 d3 out2 out1 vcc gnd vmin ct pwm radj cf hin- fg hb rd hin+ hall AM4962 d1 c1 1 f vcc l1 c3 1 f c2 0.47 f 1 (1) pgnd r3 r4 v+ r5 r6 v+ 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) d2 application 2 (slope k and minimum/maximum duty adjustable) note: d2 and d3 are recommended to be used when the current in coil l1 is higher than 300ma. figure 11. typical applications of AM4962
data sheet single phase full wave direct pwm motor driver AM4962 apr. 2011 rev. 1. 2 bcd semiconductor manufacturing limited 12 390k 560k 820k 1m 2.2m 4.7m 8.2m 0 20 40 60 80 100 minimum duty cycle (%) r5 ( ) r1, r2, r3, r4, r6 open 0 102030405060708090100 0 20 40 60 80 100 r6=100k, r1, r2, r3, r4, r5 open r6=270k, r1, r2, r3, r4, r5 open r1, r2, r3, r4, r5, r6 open output duty cycle (%) input pwm duty cycle (%) 0 102030405060708090100 0 20 40 60 80 100 r5=270k, r1, r2, r3, r4, r6 open r5=560k, r1, r2, r3, r4, r6 open r1, r2, r3, r4, r5, r6 open output duty cycle (%) input pwm duty cycle (%) typical application (note 4, continued) note 4 (refer to application circuit 2 unless otherwise noted.): adjust slope k of output pwm's duty vs. input pwm's duty 1. the default k is about 0.8 (application circuit 1). 2. adding r5 can increase k (see figure 12). 3. adding r6 can decrease k (see figure 13). figure 12 figure 13 adjust minimum duty of output pwm: 1. the default minimum duty of output pwm is about 20% (application circuit 1, figure 10). 2. decreasing r2 can increase minimu m output pwm duty (see figure 14). 3. adding r5 can decrease minimum output pwm duty (see figure 15). figure 14 figure 15 10 20 30 40 50 60 70 80 6.5k 6.0k 5.5k 5.0k 4.5k 4.0k minimum duty cycle (%) r2 ( ) r1=15k,r3,r4,r5,r6 open 3.5k
data sheet single phase full wave direct pwm motor driver AM4962 apr. 2011 rev. 1. 2 bcd semiconductor manufacturing limited 13 0 102030405060708090100 0 20 40 60 80 100 r3=390k, r1, r2, r4, r5, r6 open r3=1m, r1, r2, r4, r5, r6 open r1, r2, r3, r4, r5, r6 open output duty cycle (%) pwm (%) 0 102030405060708090100 0 20 40 60 80 100 r4=150k, r1, r2, r3, r4, r6 open r4=390k, r1, r2, r3, r5, r6 open r1, r2, r3, r4, r5, r6 open output duty cycle (%) pwm (%) typical application (note 4, continued) adjust maximum duty of output pwm: 1. the default maximum output pwm duty is 100% (application circuit 1). 2. adding r3 can decrease maximum output pwm duty (see figure 16). 3. adding r4 can increase maximum output pwm duty (see figure 17). figure 16 figure 17
data sheet single phase full wave direct pwm motor driver AM4962 apr. 2011 rev. 1. 2 bcd semiconductor manufacturing limited 14 mechanical dimensions htssop-14 unit: mm(inch) 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
data sheet single phase full wave direct pwm motor driver AM4962 apr. 2011 rev. 1. 2 bcd semiconductor manufacturing limited 15 mechanical dimensions (continued) ssop-16 unit: mm(inch) o o o o o o
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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