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M56788AFP 5 channel actuator driver ( /11 ) mitsubishi semiconductors rev000609 preliminary 42pin power ssop (42p9r-k) ?low saturation voltage. (typical 1.35v at load current 0.5a and no bootstrap condition.) absolute maximum rating of load current : ch1 ~ 5 500ma by taking advantage of the bootstrap function, the saturation voltage can be lower. ?there are two motor power supplies. vm1 ch1,2 motor power supply-1 vm2 ch3,4,5 motor power supply-2 ?built-in op amp. for regulator. (it enables a regulator which consists of external pnp tr.s and resistors.) ?flexible input amp. setting.(it enables pwm control.) ?low cross-over distortion. ?wide supply voltage range.( 4.5v ~ 13.2v ) ?built-in thermal shut down circuit. ?built-in mute circuit.(two systems) mute1: ch1 ~ 4, mute2: ch5 md,cd-audio,cdrom,vcd,dvd etc. pin configuration (topview) mute1 tsd gnd (4pins) in1+ + - - + + - ch3 + - - + ch4 + - - + ch2 + - + - - + ch1 + - mute2 in1- out1 vm1(+) vm1(-) vm2(-) vm2(+) out2 in2- in2+ vm3(-) vm3(+) in3+ in3- out3 vm2 vm4(-) vm4(+) sleep hi :sleep vrefo vref vrefo bias - vm1 out4 ss.gnd 5ch + - in4+ in4- vbs1 5 5 8 8 reg+ + - regb - + - - + ch5 vm5(-) vm5(+) out5 + - in5+ in5- 8 ch3in low,open mute on 1 ~ 4 ch e1 e2 e4 e5 e3 vrefm2 vbs2 1.25v - vrefm1 vbs1 vbs1 vbs1 vbs1 vbs1 vbs1 vbs2 vbs2 vbs2 vbs2 vbs2 vbs2 vbs2 vm1 vm2 r r r r vref vreg 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 19 20 21 22 23 24 gnd n.c out4 in3+ in3- vm3- vm3+ vm4+ vm4- vm5+ vm5- out5 in5- in5+ vm2 in4+ in4- vbs2 out3 ch3in gnd in2+ in2- out2 vm1 in1+ in1- out1 vm1- vm1+ vm2+ vm2- mute1 mute2 regb reg+ ss.gnd vref vrefo vbs1 gnd gnd 3 8 2 1 10 9 12 13 20 19 21 14 15 17 18 16 33 29 11 7 25 26 24 42 41 23 22 27 28 30 31 32 35 34 36 37 40 38 39 4 5 1
M56788AFP 5 channel actuator driver ( /11 ) mitsubishi semiconductors rev000609 preliminary k q mw / ? ? ? ? -20 ~ +75 -40 ~ +150 vbs vm io 15 500 v v ma vin pt tj topr tstg 150 9.6 1.2 w 2 < absolute maximum rating > (ta=25? ) < pin function > symbol parameter conditions rating units bootstrap power supply motor power supply vbs power supply vm power supply output current power dissipation free air thermal derating junction temperature operating temperature storage temperature free air maximum input voltage of terminals symbol symbol terminal terminal function terminal terminal function 2 3 4 5 6 7,11 8 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 30 31 29,33 34 35 36 37 38 39 40 41 42 ch4 inverted output vm4(-) ch4 non-inverted output vm4(+) ch3 inverted output vm3(-) ch3 non-inverted output vm3(+) ch3 non-inverted input ch3in n.c n.c e4 amplifier output out4 e4 amplifier inverted input in4- e4 amplifier non-inverted input in4+ e5 amplifier non-inverted input in5+ e5 amplifier inverted input in5- e5 amplifier output out5 ch5 inverted output vm5(-) ch5 non-inverted output vm5(+) bootstrap power supply vbs2 vm2 motor power supply out3 e3 amplifier output in3- e3 amplifier inverted input gnd motor gnd 15 0 ~ vbs2 v 23,25,26,27,28,37,40pin 1,3,8,17,18,19,20,42pin 0 ~ vbs1 v ch1 inverted output vm1(-) e1 amplifier output out1 motor power supply vm1 reference voltage input vref reference voltage output vref0 e1 amplifier non-inverted input in1+ e1 amplifier inverted input in1- ch1 non-inverted output vm1(+) e2 amplifier inverted input in2- e2 amplifier output out2 e2 amplifier non-inverted input in2+ gnd motor gnd ch2 non-inverted output vm2(+) ch2 inverted output vm2(-) ch1 ~ 4 mute mute1 ch5 mute mute2 regb regulator pnp base connect small signal gnd ss.gnd reg+ regulator voltage setting resistor vbs1 bootstrap power supply in3+ e3 amplifier non-inverted input 32 1 9 10
M56788AFP 5 channel actuator driver ( /11 ) mitsubishi semiconductors rev000609 preliminary icc1 icc2 35 vsat1 v 2.2 vbs1,vbs2,vm1,vm2 current ma 1.35 1.9 50 vbs1,vbs2,vm1,vm2 current at sleep mode voff1 mv gain1 -41 41 5 5.5 4.5 v v 5.0 vrefo=out1=1.5v voff2 mv -41 41 vrefo=out2=1.5v voff3 mv -47 47 vrefo=ch3in=1.5v voff4 mv -47 47 vrefo=out4=1.5v voff5 mv -47 47 vrefo=out5=1.5v {vm1(+)-vm1(-)} (out1-vrefo) gain2 5 5.5 4.5 {vm2(+)-vm2(-)} (out2-vrefo) < recommended operating conditions > symbol parameter minimum typical maximum limits units bootstrap power supply < electrical characteristics > (ta=25 c, vbs=vm=5v unless otherwise noted.) symbol parameter supply current - 1 conditions limits min typ max units ch1 ~ 5 saturation voltage top and bottom saturation voltage. motor power supply supply current - 2 ch1 output offset voltage ch2 output offset voltage ch3 output offset voltage ch4 output offset voltage ch5 output offset voltage v/v v/v vbs1,vbs2 vm *+ 1.0 vm1,vm2 1.3 load current 0.5a and no bootstrap. ch1 voltage gain between input and output ch2 voltage gain between input and output (mute1 = mute 2 =0v). < thermal derating > ambient temperature ta (?) (?) 0 25 50 75 100 125 150 1.0 2.0 3.0 4.0 5.0 6.0 (w) a:4.5w using a-type board b:3.2w using b-type board c:2.6w using c-type board this ic's package is power-ssop, so improving the board on which the ic is mounted enables a large power dissipation without a heat sink. for example, using an 1 layer glass epoxy resin board, the ic's power dissipation is 2.6w at least. and it comes to 4.5w by using an improved 2 layer board. the information of the a, b, c type board is shown on page 8. 3
M56788AFP 5 channel actuator driver ( /11 ) mitsubishi semiconductors rev000609 preliminary gain3 v/v 8 8.8 7.2 gain4 gain5 8 8.8 7.2 8 8.8 7.2 vine 0.5 vbs1-2.0 v voute vbs1-0.5 v 0.5 -10 +10 mv vofe vinvref 1.0 v vbs1-2.0 vofvref -10 +10 mv vin= 1.5v ?ma load vmute-on mute-on 2.0 vmute-off mute-off 0.8 v v imute 170 250 ? 4 iine in+ = in- = 1.5v -1.0 0 -0.05 ? iinvref vref= 1.5v -1.0 0 -0.05 ? < electrical characteristics > vin = 1.5v(at buffer ) e1,2,3,4,5 amplifier input voltage range e1,2,3,4,5 amplifier output voltage range e1,2,3,4,5 amplifier input current vref amplifier input voltage range vref amplifier offset voltage vref amplifier input current mute-on voltage mute-off voltage mute terminal input current mute terminal input current (at 5v input voltage) v/v v/v e1,2,3,4,5 amplifier offset voltage reg-out regulator output voltage range at vbs=7.5v,regulator voltage 4.8 5.0 5.2 v 0.5 vbs2-2.0 v e1,e2 amp e3,e4,e5 amp vbs2-0.5 v 0.5 e1,e2 amp (no load) e3,e4,e5 amp (no load) M56788AFP has 2 mute terminals and the functions are as follows. mute 1 26 pin mute 2 25 pin low/open high power and control amp. circuits of ch1 to ch4. power and control amp. circuits of ch5. vref amp. vreg amp. disable enable enable enable high disable enable enable enable high high enable enable enable enable disable disable disable enable low/open low/open low/open when both mute1 inputs and mute 2 inputs are low voltage or open, the ic is in sleep mode. ch3 voltage gain between input and output ch4 voltage gain between input and output ch5 voltage gain between input and output symbol parameter conditions limits units min typ max setting resistor 10k/29.7k , connects external pnp. (ta=25?, vbs=vm=5v unless otherwise noted.) {vm5(+)-vm5(-)} (out5-vrefo) {vm3(+)-vm3(-)} (ch3in-vrefo) {vm4(+)-vm4(-)} (out4-vrefo)
M56788AFP 5 channel actuator driver ( /11 ) mitsubishi semiconductors rev000609 preliminary [thermal characteristics] symbol parameter unit min typ max min typ max function start temperature of ic function stop temperature of ic tsd thermal shut down 155 ? 120 *note this tsd function start temperature doesn't show the guaranteed max. temperature of the devices. the guranteed max. temperature is tj max. which is shown in "absolute maximum rating". the tsd function is a thermal protection in case the temperature of the devices goes up above tjmax because of wrong use. and these tsd temperature are the target temperatures for circuit design, not the guranteed temperatures. (the tsd function of all the devices is not checked by a test in high temperature.) 5
M56788AFP 5 channel actuator driver ( /11 ) mitsubishi semiconductors rev000609 preliminary 0.2v vm- 0.5v vm+ 0.5v ch1,2 out 0.2v vm- 0.8v vm+ 0.8v ch4,5 out vrefm2 (vm/2) 1.5v gain = 8 vrefm1 (vm/2) 6 ch3 + - + - + - + - + - r r r 2.5r r 2.5r r 2.5r r 2.5r vm1 vrefm1 vrefm1 amp. vref amp. input amp. 1.5v reference 1.5v out in- in+ vref vrefo vm+ vm- gain = 5 vm2 + - + - + - + - + - r r r 4r r 4r r 4r r 4r vrefm2 vrefm2 amp. vref amp. input amp. 1.5v out in- in+ vref vrefo vm+ vm- 1.5v vm2 + - + - + - + - + - r r r 4r r 4r r 4r r 4r vrefm2 vrefm2 amp. vref amp. op amp. 1.5v reference 1.5v opout op- op+ vref vrefo vm3+ vm3- 0.2v vm3- 0.8v vm3+ 0.8v ch3in vrefm2 (vm/2) 1.5v gain = 8 ch3in < input and output characteristics of each channels > reference 1.5v ~ ~ ~
M56788AFP 5 channel actuator driver ( /11 ) mitsubishi semiconductors rev000609 preliminary (1)e1, e2 input amplifier i/o terminal equivalent circuit (in1+, in1-, out1, in2+, in2-, out2) in*+ out* gnd vbs1 gnd vbs1 in*- gnd vbs1 vbs1 (3)vref amplifier i/o terminal equivalent circuit (vref, vrefo) vrefo gnd vbs1 vref gnd vbs1 vbs1 (2)e3, e4, e5 input amplifier i/o terminal equivalent circuit (in3+, in3-, out3, in4+, in4-, out4,in5+, in5-, out5) in*+ out* gnd vbs2 gnd vbs2 in*- gnd vbs2 vbs2 e3 amplifier isn't include. (4)vreg amplifier i/o terminal equivalent circuit (reg+, regb) regb gnd vbs2 reg+ gnd vbs2 vbs2 1.25v 2k 9.5k (5)ch3in input terminal equivalent circuit ch3in gnd vbs2 please refer to the application circuits. (it shows the circuitry of the ic.) mute* gnd vbs1 gnd 2k 23k 23k (6)mute equivalent circuit (mute1, mute2) < i/o terminal equivalent circuit > 7
M56788AFP 5 channel actuator driver ( /11 ) mitsubishi semiconductors rev000609 preliminary (7) ch1,ch2 power i/o terminal equivalent circuit (vm1(+), vm1(-), vm2(+), vm2(-)) vbs1 < i/o terminal equivalent circuit > gnd vm vm1 (8) ch3,ch4,ch5 power amplifier output terminal equivalent circuit (vm3(+), vm3(-), vm4(+), vm4(-), vm5(+), vm5(-)) vbs2 gnd vm vm2 the equivalent circuits of an output stage of power amplifiers are shown in (7) and (8) .the power supplies of ch1,ch2 are vm1. and the power supplies of ch3, ch4, ch5 are vm2. the source side of the power amplifier output stage consists of a pnp and a npn. in the case of the ch1 and ch2, the emitta of the pnp is connected to vbs1, and in the case of the ch3, ch4 and ch5, it is connected to vbs2. so the power supplies of the pnp can be adjusted externally. [about bootstrap advantage] the output stage of the power amplifier consists of the preceding components. if vbs* is provided with higher voltage input than vm* (the recommendation voltage is vm*+1v) externally, the output range can be wider than that of vbs*=vm*. please take advantage of this bootstrap function for the system which has many power supplies. and it is the same with the external bootstrap circuit which provides vbs* with higher voltage inputs than vm*. also the bootstrap can decrease the saturation voltage at the source side of the power amplifier output stage. therefore, when the outputs of the power amplifiers which drive motors and actuators are fully swung, the power dissipation of the ic will be decreased. 8
M56788AFP 5 channel actuator driver ( /11 ) mitsubishi semiconductors rev000609 preliminary evaluation board mounted ic 42 22 1 21 42 22 1 21 42 22 1 21 42 22 1 21 42 22 1 21 glass-epoxy fr-4 thickness size material : copper power-ssop board material 70 70mm t=1.6mm 1 and 2 layers thickness :t=18? a-type board [2 layer] b-type board [2 layer] c-type board [1 layer] 1st layer [top view] 2nd layer [back view] the boards for thermal derating evaluation top view bottom view 42p9r-k 9
M56788AFP 5 channel actuator driver ( /11 ) mitsubishi semiconductors rev000609 preliminary single input (linear signal)?direct voltage control r1 r2 vctl1 vrefo 5v 5v 1.5v vctl2 vrefo vctl3 vrefo vctl4 vrefo vctl5 vrefo vbs ss.gnd 10k 14k 3v r3 r4 r6 r5 r8 r7 r10 r9 vm2 mute2 mute1 vm1+ vm1- out1 in1+ in1- vm2+ vm2- out2 in2+ in2- vm3+ vm3- vm4+ vm4- out4 in4+ in4- vbs1 vrefo vref in3+ ch3in r r 2.5 2.5 5 4 4 8 2.5 2.5 5 4 4 8 gnd (4pins) ss.gnd vm5+ vm5- out5 in5+ in5- 4 4 8 1 ~ 4ch 5ch sleep hi :sleep tsd 1.25v reg+ regb in3- out3 vrefm2 e1 e2 e4 e5 vref vrefo vbs2 vm1 e3 reg-amp r r vrefm1 5v 10
M56788AFP 5 channel actuator driver ( /11 ) mitsubishi semiconductors rev000609 preliminary differential pwm input?direct voltage control( focus,tracking ,spindle,sled,roading) r2 c1 vrefo 1.5v vrefo r4 c2 c2 r6 c3 vrefo r8 c4 vrefo r10 c5 vrefo mute2 mute1 vm1+ vm1- out1 in1+ in1- vm2+ vm2- out2 in2+ in2- vm3+ vm3- vm4+ vm4- out4 in4+ in4- vrefo vref in3+ ch3in 2.5 2.5 5 4 4 8 2.5 2.5 5 4 4 8 gnd (4pins) ss.gnd vm5+ vm5- out5 in5+ in5- 4 4 8 1 ~ 4ch 5ch sleep hi :sleep tsd in3- out3 e1 e3 e2 e4 e5 vref vrefo 5v 5v vm2 vbs1 r r vrefm2 vbs2 vm1 r r vrefm1 5v vbs ss.gnd 10k 14k 3v 1.25v reg+ regb reg-amp it can be opened at propagation characteristic check. 11

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