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MITSUBISHI
M56788FP
5 CHANNEL ACTUATOR DRIVER DESCRIPTION
The M56788FP is a semiconductor integrated circuit in order 5ch actuator.
PIN CONFIGURATION (TOP VIEW)
CH3IN OUT3 IN3VBS2 Vm2 N.C GND IN3+ VM3VM3+ GND VM4+ 1 2 3 4 5 6 7 8 9 42 REG+ 41 REGB 40 IN1+ 39 VBS1 38 Vm1 37 IN136 OUT1 35 VM134 VM1+
FEATURES
q Low saturation voltage. q 3.3V DSP available. q There are two motor power supplies. Vm1 CH1,2 motor power supply-1 Vm2 CH3,4,5 motor power supply-2 q Built-in OP amp. for Regulator. (It enables a Regulator which consists of external PNP Tr.s and resistors.) q Flexible Input amp. setting.(It enables PWM control.) q Low cross-over distortion.(4.5V-13.2V) q Wide supply voltage range.(4.5V-13.2V) q Built-in Thermal Shut Down circuit. q Built-in Mute circuit.(two systems) MUTE1:CH1-4, MUTE2:CH5
M56788FP
10 11 12 13 14 15 16 17 18 19 20 21
33 GND 32 VM2+ 31 VM230 OUT2 29 GND 28 IN227 IN2+ 26 MUTE1 25 MUTE2 24 SS.GND 23 VREF 22 VREFO
APPLICATION
MD, CD-audio, CD-ROM, VCD,DVD etc.
VM4VM5+ VM5OUT5 IN5IN5+ IN4+ IN4OUT4
Outline
Vm1 38 VBS1 39 VBS2 4
42P9R-B
N.C: no connection Vm2 5
VBS2 IN1+ 40 IN1- 37 OUT1 36 VM1(+) 34 VM1(-) 35 + + + + + VBS1 E1 VBS1 R R Vm1 Vm2 + + R R Vrefm2 E3 VBS2
+
3 8 2 1 + +
IN3IN3+ OUT3 CH3IN
CH1 x5 VBS1
Vrefm1
CH3 x8 VBS2 CH4
10 VM3(+) 9 VM3(-)
VM2(+) 32 VM2(-) 31 OUT2 30 IN2- 28 IN2+ 27 VREFO 22
CH2 x5 VREFO BIAS + VBS1 E2 Low,Open MUTE ON 1-4 CH 1.25v 5CH TSD VBS1 Hi:Sleep
+ +
12 VM4(+) 13 VM4(-)
x8 VBS2 E4
+
20 IN419 IN4+ 21 OUT4 + + 14 VM5(+) 15 VM5(-)
SLEEP
VBS2 CH5 x8 VBS2 E5
VREF 23
+
VBS1 VREF +
VBS2 REGB 41 REG+ 42 VREG
+
17 IN518 IN5+ 16 OUT5
26 MUTE1 SS.GND
24
25 7 11 29 33 MUTE2 GND(4PINS)
MITSUBISHI
M56788FP
5 CHANNEL ACTUATOR DRIVER
PIN FUNCTION
Terminal
1 2 3 4 5 6 7 , 11 8 9 10 12 13 14 15 16 17 18 19 20 21
Symbol CH3IN OUT3 IN3VBS2 Vm2 N.C GND IN3+ VM3(-) VM3(+) VM4(+) VM4(-) VM5(+) VM5(-) OUT5 IN5IN5+ IN4+ IN4OUT4
Terminal function CH3 non-inverted input E3 amplifier output E3 amplifier inverted input Bootstrap power supply Motor power supply N.C Motor GND E3 amplifier non-inverted input CH3 inverted output CH3 non-inverted output CH4 non-inverted output CH4 inverted output CH5 non-inverted output CH5 inverted output E5 amplifier output E5 amplifier inverted input E5 amplifier non-inverted input E4 amplifier non-inverted input E4 amplifier inverted input E4 amplifier output
Terminal
22 23 24 25 26 27 28 29 , 33 30 31 32 34 35 36 37 38 39 40 41 42
Symbol VREF0 VREF SS.GND MUTE2 MUTE1 IN2+ IN2GND OUT2 VM2(-) VM2(+) VM1(+) VM1(-) OUT1 IN1Vm1 VBS1 IN1+ REGB REG+
Terminal function Reference voltage output Reference voltage input Small signal GND CH5 mute CH1-4 mute E2 amplifier non-inverted input E2 amplifier inverted input Motor GND E2 amplifier output CH2 inverted output CH2 non-inverted output CH1 non-inverted output CH1 inverted output E1 amplifier output E1 amplifier inverted input Motor power supply Bootstrap power supply E1 amplifier non-inverted input Regulator PNP base connect Regulator voltage setting resistor
ABSOLUTE MAXIMUM RATING (Ta=25C )
Symbol VBS Vm Io Vin Pt Kq Tj Topr Tstg Parameter Bootstrap power supply Motor power supply Output Current Maximum input voltage of terminals Power dissipation Thermal derating Junction temperature Operating temperature Storage temperature Conditions VBS power supply Vm power supply 23, 25, 26, 27, 28, 37, 40PIN 1, 3, 8, 17, 18, 19, 20, 42PIN Free Air Free Air Rating 15 15 500 0-VBS1 0-VBS2 1.2 9.6 150 -20-+75 -40-+150 Units V V mA V V W mW/C C C C
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min Limits Typ 5.0 Vm*+1.0 Max Units V V
Vm1,Vm2 Motor power supply VBS1,VBS2 Bootstrap power supply
MITSUBISHI
M56788FP
5 CHANNEL ACTUATOR DRIVER
ELECTRICAL CHARACTERISTICS (Ta=25C, VBS=Vm=5V unless otherwise noted.)
Symbol Icc1 Icc2 Vsat1 Voff1 Voff2 Voff3 Voff4 Voff5 Gain1 Gain2 Gain3 Gain4 Gain5 VinE VoutE VofE IinE Reg-out VinVREF VofVREF IinVREF Vmute-on Vmute-off Imute Parameter Supply current-1 Supply current-2 CH1-5 Saturation voltage CH1 output offset voltage CH2 output offset voltage CH3 output offset voltage CH4 output offset voltage CH5 output offset voltage Conditions VBS1,VBS2,Vm1,Vm2 current VBS1,VBS2,Vm1,Vm2 current at Sleep Mode (MUTE 1=MUTE 2=0V). Top and Bottom saturation voltage. Load current 0.5A and no bootstrap. -41 -41 -47 -47 -47 4.5 4.5 7.2 7.2 7.2 0.5 0.5 0.5 0.5 -10 -1.0 4.8 1.0 Vin=1.5V 2mA load VREF=1.5V Mute-on Mute-off Mute terminal input current(at 5V input voltage) -10 -1.0 2.0 170 250 5 5 8 8 8 Min Limits Typ 35 1.3 1.35 Max 50 2.2 1.9 41 41 47 47 47 5.5 5.5 8.8 8.8 8.8 VBS1-2.0 VBS2-2.0 VBS1-0.5 VBS2-0.5 +10 0 5.2 VBS1-2.0 +10 0 0.8 Units mA mA V mV mV mV mV mV V/V V/V V/V V/V V/V V V V V mV A V V mV A V V A
VREFO=OUT1=1.5V VREFO=OUT2=1.5V VREFO=CH3IN=1.5V VREFO=OUT4=1.5V VREFO=OUT5=1.5V CH1 Voltage Gain between input {VM1(+)-VM1(-)} and output (OUT1-VREFO) CH2 Voltage Gain between input {VM2(+)-VM2(-)} and output (OUT2-VREFO) CH3 Voltage Gain between input {VM3(+)-VM3(-)} and output (CH3IN-VREFO) CH4 Voltage Gain between input {VM4(+)-VM4(-)} and output (OUT4-VREFO) CH5 Voltage Gain between input {VM5(+)-VM5(-)} and output (OUT5-VREFO) E1,2,3,4,5 amplifier input voltage E1,E2 amp range E3,E4,E5 amp E1,E2 amp(no load) E1,2,3,4,5 amplifier output voltage range E3,E4,E5 amp(no load) E1,2,3,4,5 amplifier offset voltage Vin = 1.5V(at buffer ) E1,2,3,4,5 amplifier input current IN+=IN-=1.5V At VBS=7.5V, Regulator voltage setting resistor 10K/30K, connects external PNP.
-0.05 5.0
Regulator output voltage range VREF amplifier input voltage range VREF amplifier offset voltage VREF amplifier input current Mute-on voltage Mute-off voltage Mute terminal input current
-0.05
MITSUBISHI
M56788FP
5 CHANNEL ACTUATOR DRIVER
MUTE Function
M56788FP has 2 MUTE terminals and the functions are as follows. MUTE 1 26 pin High Low/Open High Low/Open MUTE 2 25 pin High High Low/Open Low/Open Power and Control Amp. circuits of CH1 to CH4. ENABLE DISABLE ENABLE DISABLE Power and Control Amp. circuits of CH5. ENABLE ENABLE DISABLE DISABLE VREF Amp. ENABLE ENABLE ENABLE DISABLE VREG Amp. ENABLE ENABLE ENABLE ENABLE
When both MUTE1 inputs and MUTE 2 inputs are low voltage or open, the IC is in Sleep Mode.
INPUT and OUTPUT CHARACTERISTICS of EACH CHANNELS
CH1,2
Vm1 r r VREFO VREF 1.5V OUT ININ+ Reference 1.5V + Input Amp. R + Vref Amp. R + 2.5R 2.5R VMVrefm1 (Vm/2) 0.5V 0.5V R + Vrefm1 Amp. Vrefm1 1.5V R 2.5R + VM+ 2.5R VM+ VM0.2V

OUT
Gain=x5
CH3
Vm2 r r VREFO VREF + Vref Amp. R + OP Amp. R + 4R VM3R + Vrefm2 Amp. R 4R + VM3+ 4R Vrefm2

CH3IN
1.5V
0.2V
1.5V

CH3IN OPOUT OPOP+
VM3+
VM3-
Vrefm2 (Vm/2) 0.8V
0.8V
4R
Reference 1.5V
Gain=x8
CH4,5
Vm2 r r VREFO VREF + Vref Amp. OUT ININ+ + Input Amp. R R + 4R 4R VMR + Vrefm2 Amp. Vrefm2

OUT
1.5V R 4R + VM+ 4R
0.2V
1.5V
VM+
VM-
Vrefm2 (Vm/2) 0.8V
0.8V
Reference 1.5V
Gain=x8
MITSUBISHI
M56788FP
5 CHANNEL ACTUATOR DRIVER
I/O terminal Equivalent circuit
(1)E1, E2 input amplifier I/O terminal equivalent circuit (IN1+, IN1-, OUT1, IN2+, IN2-, OUT2)
VBS1
(2)E3, E4, E5 input amplifier I/O terminal equivalent circuit (IN3+, IN3-, OUT3, IN4+, IN4-, OUT4, IN5+, IN5-, OUT5)
VBS2
E3 amplifier isn't include.
GND
VBS1
GND
VBS1
GND
VBS1
GND
VBS2
GND
VBS2
GND
VBS2
IN*-
IN*+
OUT*
IN*-
IN*+
OUT*
(3)VREF amplifier I/O terminal equivalent circuit (VREF, VREFO)
VBS1
(3)VREG amplifier I/O terminal equivalent circuit (REG+, REGB)
VBS2 1.25V 9.5K
2K GND VBS1 GND VBS1 GND VBS2 GND VBS2
VREF
VREFO
REG+
REGB
(5)CH3IN input terminal equivalent circuit Please refer to the application circuits. (It shows the circuitry of the IC.)
(3)MUTE equivalent circuit (MUTE1, MUTE2)
MUTE* GND 2K 23K VBS1
GND CH3IN
VBS2 23K
GND
MITSUBISHI
M56788FP
5 CHANNEL ACTUATOR DRIVER
I/O terminal equivalent circuit
(7)CH1,CH2 power I/O terminal equivalent circuit (VM1(+), VM1(-), VM2(+), VM2(-))
VBS1 Vm1
VM
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.
GND
(8)CH3,CH4,CH5 power amplifier output terminal equivalent circuit (VM3(+), VM3(-), VM4(+), VM4(-), VM5(+), VM5(-))
VBS2 Vm2
VM
GND
[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 recommendationvoltage 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.
THERMAL DERATING
6.0 (W) 5.0 Power Dissipation (Pdp) 4.0 2.6W using P-type board 3.0 3.6W using N-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 3.6W by using an improved 2 layer board. The information of the N, P type board is shown in the board information.
2.0
1.0
0
25
50 75 100 Ambient Temperature Ta(C)
125
150 (C)
MITSUBISHI
M56788FP
5 CHANNEL ACTUATOR DRIVER
APPLICATION CIRCUIT No.1 single input (linear signal) * Direct voltage control
5V VBS1 VBS2 5V Vm2 R R Vrefm2 +R Vm1 R Vrefm1 +Vref VREFO VREF + VREFO
1.5V
5V
VREFO VCTL1 R1 R2
IN1+ IN1OUT1
IN3+ VREFO IN3OUT3 CH3IN VCTL3 R6 R5 E1 E3 + ++x2.5 x4 -+ VM3+ SPINDLE +-
VM1+ FOCUS VREFO VCTL2 R3 R4 TRACKING VBS
IN2+ IN2OUT2
x4 +E2
-+
+
-
VM2-
x4 x2.5
-+
x4 3V 14K REGB + REG+
-+
+
Ra
x5 VM1x2.5
M
x8 VM3-
IN4+ IN4OUT4 R8
VREFO VCTL4 R7
VM2+
+-
x2.5
E4
x5 VM4+ +-
SLED
M
x8 VM4-
Reg-amp E5
IN5+ IN5OUT5 R10
VREFO VCTL5 R9
10K SS.GND
1.25V
x4
-+
MUTE1
-
SLEEP Hi:Sleep 5CH 1-4CH
VM5+ ROADING
MUTE2
M
TSD x4 -+
x8 VM5-
SS.GND
GND (4PINS)
MITSUBISHI
M56788FP
5 CHANNEL ACTUATOR DRIVER
APPLICATION CIRCUIT No.2 Differential PWM input * Direct voltage control (FOCUS, TRACKING, SPINDLE, SLED, ROADING)
5V VBS1 VBS2 5V Vm2 PWM2 R1 C1 C2 R3 PWM2 3V 14K 10K SS.GND -+ MUTE1 SLEEP Hi:Sleep 5CH 1-4CH M TSD x4 -+ x8 VM5R1 IN1+ R2 C1 VREFO VM1+ FOCUS + x2.5 x4 x5 VM1R4 R4 C2 VM2+ R3 TRACKING x5 VM2x4 x2.5 -+ +VBS x8 x4 REGB R10 REG+ C5 R9 + -+ VM4PWM1 MUTE2 + x2.5 E4 +x2.5 x4 +E2 -+ -+ VM3+ SPINDLE IN1OUT1 R2 VREFO Ra IN2+ IN2OUT2 PWM1 5V Vm1 R R Vrefm2 +R R R5 IN3+ + E1 R6 OUT3 CH3IN x8 VM3+ IN4+ IN4R8 OUT4 C4 VM4+ VREFO R8 C4 + 1.25V E5 Reg-amp IN5+ IN5R10 OUT5 C5 R9 x4 VM5+ ROADING SS.GND GND (4PINS) C3 VREFO It can be opened at Propagation characteristic check. R6 C3 R7 +E3 IN3PWM1 PWM1 R7 SLED M PWM2 PWM2 M R5 Vrefm1 +Vref VREFO VREF 1.5V PWM1 PWM2 + VREFO
VREFO

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