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MITSUBISHI
M56782FP
4 CHANNEL ACTUATOR DRIVER
DESCRIPTION
The M56782FP is a semiconductor integrated circuit in order to drive 4ch actuator.
PIN CONFIGURATION (TOP VIEW)
IN1+ VBS1 Vm1 IN1OUT1 VM1VM1+
1 2 3 4 5 6 7 8 9
42 41 40 39 38 37 36 35 34
OUT3 IN3VBS2 Vm2 IN3+ VM3VM3+
FEATURES
q Large power dissipation q 3.3V DSP available. q Low saturation voltage. (Typical 1.35V at load current 0.5A and no bootstrap condition.) q There are two motor power supplies. Vm1 CH1, 2 motor power supply-1 Vm2 CH3, 4 motor power supply-2 q Flexible Input amp. setting. (It enables PWM control.) q Low cross-over distortion. q Wide supply voltage range. (4.5V - 13.2V) q Built-in Thermal Shut Down circuit. q Built-in Mute circuit.
M56782FP
10
GND
33 32 31 30 29 28 27 26 25 24 23 22
VM4+ VM4IN4+ IN4OUT4 VREFO VREF GND
11 12 13 14
APPLICATION
MD, CD-audio, CD-ROM, VCD, DVD etc.
VM2+ VM2OUT2 IN2IN2+ MUTE SS.GND
15 16 17 18 19 20 21
Outline 42P9R-A
BLOCK DIAGRAM
Vm1 3 VBS1 2 VBS2 40 Vm2 39
IN1+ 1 IN1- 4 OUT1 5 VM1(+) 7 VM1(-) 6 + + + +
+ -
VBS1 E1 VBS1
R R + Vm1 Vm2 + -
R R
VBS2 E3 VBS2
+
41 IN338 IN3+ 42 OUT3 + + 36 VM3(+) 37 VM3(-)
CH1 x5 VBS1
Vrefm1
Vrefm2
CH3 x8 VBS2 CH4 x8
VM2(+) 15 VM2(-) 16 OUT2 17 IN2- 18 IN2+ 19 VREFO 23
CH2 x5 VREFO BIAS + VBS1 E2 VBS1 VREF 20 MUTE 21 SS.GND Low,Open MUTE ON BIAS VBS1 VBS1 TSD
+ +
28 VM4(+) 27 VM4(-) 25 IN426 IN4+ 24 OUT4
VBS2 E4
+
VREF 22 +
8 to 14
29 to 35
GND (14PINS)
MITSUBISHI
M56782FP
4 CHANNEL ACTUATOR DRIVER
PIN FUNCTION
Terminal
1 2 3 4 5 6 7 8
Symbol IN1+ VBS1 Vm1 IN1OUT1 VM1(-) VM1(+) GND VM2(+) VM2(-) OUT2 IN2IN2+ MUTE SS.GND
Terminal function E1 amplifier non-inverted input Bootstrap power supply Motor power supply E1 amplifier inverted input E1 amplifier output CH1 inverted output CH1 non-inverted output Motor GND CH2 non-inverted output CH2 inverted output E2 amplifier output E2 amplifier inverted input E2 amplifier non-inverted input mute Small signal GND
Terminal
42 41 40 39 38 37 36 29
Symbol OUT3 IN3VBS2 Vm2 IN3+ VM3(-) VM3(+) GND VM4(+) VM4(-) IN4+ IN4OUT4 VREFO VREF
Terminal function E3 amplifier output E3 amplifier inverted input Bootstrap power supply Motor power supply E3 amplifier non-inverted input CH3 inverted output CH3 non-inverted output Motor GND CH4 non-inverted output CH4 inverted output E4 amplifier non-inverted input E4 amplifier inverted input E4 amplifier output Reference voltage output Reference voltage input
-
15 16 17 18 19 20 21
14
-
28 27 26 25 24 23 22
35
ABSOLUTE MAXIMUM RATING (Ta = 25C)
Symbol VBS Vm Io Vin Pt K 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 VBS power supply Vm power supply , 4 , 18 , , 26 , 38 , Free Air Free Air
1 25 19 41
Conditions
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
, 20 , 22 PIN PIN
MITSUBISHI
M56782FP
4 CHANNEL ACTUATOR DRIVER
RECOMMENDED OPERATING CONDITIONS
Symbol Vm1, Vm2 VBS1,VBS2 Parameter Motor power supply Bootstrap power supply Min. Limits Typ. 5.0 Vm + 1.0 Max. Units V V
ELECTRICAL CHARACTERISTICS (Ta = 25C, VBS = Vm = 5V unless otherwise noted)
Symbol ICC1 ICC2 Vsat1 Voff1 Voff2 Voff3 Voff4 Gain1 Gain2 Gain3 Gain4 Parameter Supply current - 1 Supply current - 2 CH1 - 4 Saturation voltage CH1 output offset voltage CH2 output offset voltage CH3 output offset voltage CH4 output offset voltage CH1 Voltage Gain between input and output CH2 Voltage Gain between input and output CH3 Voltage Gain between input and output CH4 Voltage Gain between input and output Conditions VBS1, VBS2, Vm1, Vm2 current VBS1, VBS2, Vm1, Vm2 current at Sleep Mode (MUTE1 = MUTE2 = 0V). Top and Bottom saturation voltage. Load current 0.5A and no bootstrap. VREFO = OUT1 = 1.5V VREFO = OUT2 = 1.5V VREFO = OUT3 = 1.5V VREFO = OUT4 = 1.5V {VM1(+) - VM1(-)} (OUT1 - VREFO) {VM2(+) - VM2(-)} (OUT2 - VREFO) {VM3(+) - VM3(-)} (OUT3 - VREFO) {VM4(+) - VM4(-)} (OUT4 - VREFO) Min. -- -- -- -41 -41 -47 -47 4.5 4.5 7.2 7.2 Limits Typ. 35 1.3 1.35 -- -- -- -- 5 5 8 8 Max. 50 2.2 1.9 41 41 47 47 5.5 5.5 8.8 8.8 Units mA mA V mV mV mV mV V/V V/V V/V V/V
MITSUBISHI
M56782FP
4 CHANNEL ACTUATOR DRIVER
ELECTRICAL CHARACTERISTICS (Ta = 25C, VBS = Vm = 5V unless otherwise noted)
Symbol VinE VoutE VofE IinE VinVREF VofVREF IinVREF Vmute-on Vmute-off Imute Parameter E1, 2, 3, 4, amplifier input voltage range E1, 2, 3, 4, amplifier output voltage range E1, 2, 3, 4, amplifier offset voltage E1, 2, 3, 4, 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 Conditions E1, E2 amp E3, E4 amp E1, E2 amp (no load) E3, E4 amp (no load) Vin = 1.5V (at buffer) IN+ = IN- = 1.5V Min. 0.5 0.5 0.5 0.5 -10 -1.0 1.0 Vin = 1.5V and 2mA load VREF = 1.5V Mute-on Mute-off Mute terminal input current (at 5V input voltage) -10 -1.0 -- 2.0 -- Limits Typ. -- -- -- -- -- -0.05 -- -- -0.05 -- -- 170 Max. VBS1-2.0 VBS2-2.0 VBS1-0.5 VBS2-0.5 +10 0 VBS1-2.0 +10 0 0.8 -- 250 Units V V V V mV A V mV A V V A
THERMAL DERATING
6.0 (W) 5.0 3.0W using I-type board Power Dissipation (Pdp) 4.0 2.7W using J-type board 3.0 4.0W using H-type board
2.0
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 2.7W at least. And it comes to 4.0W by using an improved 2 layer board. The information of the H, I, J type board is shown in the board information.
1.0
0
25
50
75
100
125
150
Ambient Temperature Ta (C)
MITSUBISHI
M56782FP
4 CHANNEL ACTUATOR DRIVER
INPUT AND OUTPUT CHARACTERISTICS OF EACH CHANNELS
CH1, 2
Vm1 OUT
r r
+ Vrefm1 Amp. R
Vrefm1
1.5V 0.2V
2.5R + VM+ 2.5R Vrefm1 (Vm/2) 0.5V 0.5V VM+ VM-
VREFO VREF 1.5V OUT ININ+ Input Amp. R 2.5R + + Vref Amp. R + 2.5R VM-
R
Gain = x5
Reference 1.5V
CH3, 4
Vm2
OUT
1.5V r r + Vrefm2 Amp. R VREFO VREF 1.5V OUT ININ+ + Input Amp. R + Vref Amp. R + 4R 4R VM+ R 4R VM+ Vrefm2 (Vm/2) 0.8V 4R Vrefm2
0.2V
VM+
VM-
0.8V
Gain = x8
Reference 1.5V
MITSUBISHI
M56782FP
4 CHANNEL ACTUATOR DRIVER
I/O TERMINAL EQUIVALENT CIRCUIT
(1) E1, E2 input amplifier I/O terminal equivalent circuit (2) E3, E4 input amplifier I/O terminal equivalent circuit
(IN1+, IN1-, OUT1, IN2+, IN2-, OUT2) VBS1
(IN3+, IN3-, OUT3, IN4+, IN4-, OUT4) VBS2
GND IN*-
VBS1
GND IN*+
VBS1
GND
VBS1
GND IN*-
VBS2
GND IN*+
VBS2
GND
VBS2
OUT*
OUT*
(3) VREF amplifier I/O terminal equivalent circuit
(4) MUTE equivalent circuit
(VREF, VREFO) VBS1
(MUTE) MUTE
.
GND 2K 23K
VBS1
23K GND VREF VBS1 GND VREFO VBS1 GND
MITSUBISHI
M56782FP
4 CHANNEL ACTUATOR DRIVER
I/O TERMINAL EQUIVALENT CIRCUIT
(5) CH1,CH2 power amplifier output terminal equivalent circuit
(VM1(+), VM1(-), VM2(+), VM2(-)) VBS1 Vm1
VM
The equivalent circuits of an output stage of the power amplifiers are shown in (5) and (6). The power supplies of CH1, CH2 are Vm1. And the power supplies of CH3, CH4 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 and CH4, it is connected to VBS2. So the power of the PNP supplies can be adjusted externally.
GND
(6) CH3, CH4 power amplifier output terminal equivalent circuit
(VM3(+), VM3(-), VM4(+), VM4(-)) VBS2 Vm2
VM
GND
About bootstrap advantage The output stage of the power amplifiers 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.
MITSUBISHI
M56782FP
4 CHANNEL ACTUATOR DRIVER
APPLICATION CIRCUIT NO. 1 single input (linear signal) * Direct voltage control
5V VBS1 VBS2 5V
Vm2
VREFO
R
R -+ Vrefm2
Vref
VREFO VREF
1.5V
-+
5V
Vm1
R
R -+ Vrefm1 IN3+
VREFO VCTL1 R1 R2
IN1+ IN1OUT1 E3 E1 +-
-+
VREFO IN3 OUT3 VCTL3
R6
R5
VM1+ FOCUS VREFO VCTL2 R3 R4 VM2+ TRACKING MUTE
x2.5
-
x4
+
VM3+ SLED
+-
M
x8 x5 VM1x4 x2.5 -+ +VM3-
E2 E4
-+
-
x4
+
x4
BIAS
Low, OPEN MUTE ON
BIAS
TSD
SS.GND
GND (14PINS)
-+
Ra
IN2+ +IN2OUT2 IN4+ IN4OUT4 +x2.5 VM4+ VCTL4 R8 R7 VREFO
TRAY
x5 VM2+x 2.5
M
x8 VM4-
MITSUBISHI
M56782FP
4 CHANNEL ACTUATOR DRIVER
APPLICATION CIRCUIT NO. 2 Differential PWM input * Direct voltage control (FOCUS, TRACKING, SPINDLE, SLED or LOADING)
5V VBS1 VBS2 5V PWM2 R1 C2 C1 R3 R3 TRACKING PWM1 MUTE
Low, OPEN MUTE ON Vm2
VREFO
R
R -+ Vrefm2
Vref
VREFO VREF
1.5V PWM2 R5 R5 VREFO C3 VCTL4 R6 C3 SLED VREFO R7 TRAY
-+
5V
Vm1
R
R -+ Vrefm1
IN1+ +R2 IN1OUT1 -+ E1 R2 VREFO FOCUS VREFO VM1R4 IN2+ R4 IN2OUT2 +E2 E4 C2 VM2+ +x4 x5 VM2+x2.5 x4 BIAS + x2.5 PWM2 BIAS TSD x4 -+ +x2.5 E3
IN3+ IN3 R6 OUT3
C1 VM1+ x4 Ra x5 x8 VM3+ +x2.5 VM3+
-
-+
IN4+ IN4OUT4 VM4+ R8
-
x8 -+ VM4-
SS.GND
GND (14PINS)
PWM1 M M
PWM1 R1

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