NJM2660A -1- single-phase dc brushless motor pre-driver ic general description the NJM2660A is a single-phase dc brushless motor pre-driver ic. it incorporates lock detect / auto protection circuit and totem-pole pre - drivers for external power mos-fet. the turn on / turn off ratio at auto protection release was set in 1:10 easy-to-use. two comparator are built into NJM2660A for the temperature adjustable speed control or over current detection. package outline NJM2660Am NJM2660Av features ? operating voltage 4.5 to 30v ? absolute maximum voltage 36v ? totem-pole output lower arm ? internal lock detect /auto protection release circuit ? lock alarm output terminal ? internal comparator 2 circuit ? package outline dmp16 ssop16 pin configuration vcc logic control reference bias vcc lock detect & re-start lock a larm vcc h+ h- cin+b out2b out2a out1b out1a cin+a cin-a la ct cout a cin-b gnd cd dead time control
NJM2660A - 2 - block diagram recommended operating conditions (ta=25 c) parameter symbol ratings unit note supply voltage vcc 4.5 30 v ct=0 hall input voltage range vhi 0 vcc-2 v - comparator input voltage range vci 0 vcc-2 v - junction temperature tj -20 125 c - parameter symbol ratings unit note supply voltage vcc 36 v - hall input voltage range vhcmr -0.3 vcc v - hall input differential voltage vhdff 2 v - a ch output current ioma 50 ma - b ch output current iomb 50 ma - lock alarm output voltage vla 36 v - lock alarm output current iola 20 ma - comparator input voltage range vccmr -0.3 vcc v - comparator output voltage v o c 36 v - comparator output current i o c 20 ma - 435(dmp) mw power dissipation p d 375(ssop) mw device it self operating temperature range topr -40 85 c - operating junction temperature range tj -40 150 c - storage temperature range tstg -55 150 c - 1 1: vc c 9: gnd 2: h1 10: ct 3: h2 11: cin-b 4: la 12: 5: cout a 13: out2b 6: cin+a 14: out1b 7: cin-a 15: out2a 8: cd 16: absolute maximum ratings cin+b out1a 16
NJM2660A - 3 - electrical characteristics (ta=25 c, v cc =12v) parameter symbol conditions min. typ. max. unit total vcc=12v - 8 12 ma operating current icc vcc=24v - 10 15 ma input / output hall input hysteresis voltage vhys - - 20 - mv hall input bias voltage ihbias - - 0.5 - a a upper output voltage v o ha i o =-20ma vcc-2 vcc-1.7 - v io=10ma - 0.3 0.7 v a lower output voltage v o la io=50ma - 1.8 2.2 v b output voltage v o lb io=20ma - 0.3 0.7 v ach output crump voltage v clmp vcc=30v - 16 20 v bch output leak voltage ioleak vo=30v - 1 3 a dead time td cd=10nf - 350 - s lock detection lock protect operation voltage v lop 5.0 - - v lock alarm output voltage vlock lock alarm on, i la =5ma - - 0.5 v lock alarm leak current i la leak v la =30v - 1 3 a charge current ic v ct =1.5v - 4.0 5.5 a discharge current idc v ct =1.5v - 0.4 0.6 a charge / discharge current ratio ic/idc - - 10 - h level cense voltage vch - 3.0 3.3 3.6 v reversal voltage vcl - 0.70 0.85 1.00 v auto protection release on time ton ct=0.47 f - 0.25 - s auto protection release off time toff ct=0.47 f - 2.5 - s comparator ach input offset voltage vioa - - 2 7 mv input bias current iiba - - 30 200 na input common monde voltage range vicma - 0 10 - - v output sink current isink vo=1.5v 6 10 - v output saturation voltage vsat isink=3ma - 80 300 mv output leak current i cleak vo=30v - 1 3 ua comparator bch input offset voltage viob - - 2 - mv input bias current iibb - - 30 - na a charge and discharge current ratio is set in general to a minimum of 7 and a maximum of 14.
NJM2660A - 4 - time chart [] s i c vcl vch ct ton ? = [] s i dc vcl vch ct toff ? = dead time [] s cd td = 3 10 4 . 35 h+ h- out1b out2a out1a out2b td:dead time h+ out1b m otor locked lock release out2a out1a h- ton tof f tof f mot o r l oc k p rotection p eriod la ct cin+b cin- b out2b
NJM2660A - 5 - typical applications 1 ? over current protection application circuit NJM2660A 1kohm 1ohm 1.5kohm 10kohm 10kohm vz=6.2v 4.3kohm 820pf 3.3nf 1uf vcc h1 h2 la out1b out2b out1a out2a vcc gnd hall+ hall- 6kohm 4.3kohm 10k + 10uf 0.1uf couta cin+a cin- a cd cin+b cin- b gnd ct 1nf 6kohm 1kohm 100kohm
NJM2660A - 6 - typical applications 2 ? temperature speed control application circuit NJM2660A 1.6kohm 10kohm 10kohm 4.3kohm vcc h1 h2 cd ct out1 out2 out1 a out2 a vcc gnd hall+ hall- 30kohm 4.3kohm + 10uf 0.1uf 10kohm gnd cin+a cin+b cin-b cin-a couta la la 20kohm 50kohm 50kohm 1.5nf 1uf 2koh 3.3nf 20kohm 24kohm 36kohm 5kohm 10uf thermist o 4.7kohm
NJM2660A -7- typical applications 3 ? direct pwm speed control application circuit h+ out1b out2a out1a h- ton tof f tof f la ct out2b pwm_in (cin+b) m otor locked lock release mo t or lo c k p rotection p eriod ct vm hall element r1 + vcc dead time control logic control lock detect & re-start lock alarm reference bias vcc out1b out2b out1a out2a la cin+b cin-b cin+a cin-a couta h2 h1 td cd vc c pwm_in 47k 47k 47k 10k 10k from 16khz to 50khz
NJM2660A - 8 - typical characteristics [caution] the specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. the application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. vcc vs icc 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 0 5 10 15 20 25 30 vcc[v] icc[ma] vcc vs voh 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 010203040 vcc[v] voh[v] ila vs vla vcc=12v 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0 5 10 15 20 ila[ma] vla[v ] iout vs vsat_h(ach) vcc=12v 0.00 0.50 1.00 1.50 2.00 2.50 0 20 40 60 80 100 iout[ma] vsat_h[v] iout vs vsat_l(ach) vcc=12v 0.0 0.5 1.0 1.5 2.0 2.5 0 20 40 60 80 100 iout[ma] vsat_l[v] iout vs vsat_l(bch) vcc=12v 0.0 0.5 1.0 1.5 2.0 0 1020304050 iout[ma] vsat_l[ma ] icout vs vcsat(ach) vcc-12v 0.0 0.5 1.0 1.5 2.0 2.5 0 5 10 15 20 25 30 icout[ma] vcsat[v]
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