M56758FP 데이터 시트보기 (PDF) - MITSUBISHI ELECTRIC

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M56758FP

5 CHANNEL ACTUATOR MOTOR DRIVER

MITSUBISHI ELECTRIC  

MITSUBISHI <CONTROL / DRIVER IC>

M56758FP

5 CHANNEL ACTUATOR MOTOR DRIVER

INPUT AND OUTPUT EQUIVALENT CIRCUIT

(7) CH1,CH2 power amplifier output

equivalent circuit

VM1(+), VM1(-), VM2(+), VM2(-)

The equivalent circuit of the output stage of power amplifier are

shown in (7) and (8).

VBS1

The power supply of CH1, CH2 are Vm1.

And power supply of CH3, CH4, CH5 are Vm2.

Vm1

Also, the source side of a power amplifier output is organized by

the structure of PNP and NPN.

In case of the CH1 and CH2, a emitta of PNP is connected to VBS1

and in case of the CH3, CH4 and CH5, it connected to VBS2 and it

VM

can adjust from outside.

GND

(8) CH3, CH4, CH5 power amplifier output

equivalent circuit

VM3(+), VM3(-), VM4(+), VM4(-), VM5(+), VM5(-)

[About bootstrap advantage]

Power amplifier output is the preceding structure, and if the high

voltage (recommended Vm*+1V)

are provided from outside, the output swing can be large value

(more than VBS* = Vm*).

Please use of this structure at system of many power supply.

If the bootstrap circuit is organized from outside and it provide to

VBS*, it will be the same effect.

And the bootstrap can decrease the saturation voltage of power

amplifier output, so if it swings motor and actuator, the power

dissipation of this device will be decreased.

VBS2

Vm2

VM

GND

THERMAL DERATING

6.0

(W)

5.0

4.0

3.0

2.0

1.9

1.2

1.0

0

With infinite heatsink

At mounted on a board

Without heatsink

Used board

Size:190×140mm

Thickness: 1mm

Glass epoxy on both sides

25

50

75

100

125

150

(°C)

Ambient Temperature (Ta)

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