M54679FP データシートの表示（PDF） - Renesas Electronics

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M54679FP

2-Phase Stepper Motor Driver

Renesas Electronics 

M54679FP

Block Diagram

Ph1A

Ph1B

Out1B Vm1 Out1A

Source

PWM

Out2A Vm2 Out2B

Source

PWM

Regout

(3.5V)

Vref

I0(1)

I1(1)

1.25V

18K 10K

P.GND

Spike

current

cancel

Current

comp1

RQ

FF1

S

P.GND

QR

FF2

S

Spike

current

cancel

Current

comp2

TSD

Standby

Rs1

S1

Stby

Frequency

Generator

VTM

P.GND Fref

VTH

VTL

GND

S2

RS2

Ph2A

Ph2B

VCC

I0(2)

I1(2)

Pin Function

Terminal

Motor Supply Voltage

Output terminals

Current sensor

Power supply

Phase input

Output current change

Standby input

Sense inputs

Vref input

Output of voltage stabilizer

A capacitor for oscillator

Power GND

Symbol

Vm1, Vm2

Out1A, Out1B, Out2A, Out2B

Rs1, Rs2

VCC

Ph1A, Ph1B, Ph2A, Ph2B

I0(1), I1(1), I0(2), I1(2)

Stby

S1, S2

Vref

Regout

Fref

P.GND

Function

Power supply for motor drive.

Motor drive output terminals.

Output current sensing resistor (Rs) connection

terminals.

Control circuit power supply.

Output current direction switch terminals.

Output current change (100%, 70%, 33%, 0%) terminals.

Standby input (L: Standby, H or open: motor function)

terminal.

Input voltage terminal of comparators.

Reference voltage due to setting output current.

Output of voltage stabilizer (3.5V).

A capacitor due to PWM carrier frequency.

The GND terminal of bottom side flywheel diodes.

Rev.1.0, Sep.19.2003, page 3 of 12

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