TB6552FN/FNG/FL/FLG

2007-4-2

2

Block Diagram

Pin Functions

Pin No

Pin.Name

FN/FNG

FL/FLG

Functional Description

Remarks

GND

1

21

Small-signal GND pin

AIN1

2

18

Control signal input 1 (Ch. A)

AIN2

3

17

Control signal input 2 (Ch. A)

APWM

4

16

PWM control signal input pin

(Ch. A)

Input PWM signal

ASTBY

5

15

Standby control input pin

(Ch. A)

Ch. A circuit is in standby (power save) state

while this signal is Low.

AO1

7

13

Output pin 1 (Ch. A)

Ch. A connect to motor coil pin

AO2

8

11

Output pin 2 (Ch. A)

Ch. A connect to motor coil pin

PGND

9

10

GND pin for motor

GND for motor power supply (VM)

VM

6

14

Motor power supply pin

VM (ope)

= 2.5 V to 13.5 V

BO2

10

8

Output pin 2 (Ch. B)

Ch. B connect to motor coil pin

BO1

11

5

Output pin 1 (Ch. B)

Ch. B connect to motor coil pin

BSTBY

12

4

Standby control input pin

(Ch. B)

Ch. B circuit is in standby (power save) state

while this signal is Low.

BPWM

13

3

PWM control signal input pin

(Ch. B)

Input PWM signal

BIN2

14

2

Control signal input 2 (Ch. B)

BIN1

15

1

Control signal input 1 (Ch. B)

16

22

Small-signal power supply pin

Note: Pins 6, 7, 9, 12, 19, 20, 23 and 24 on the FL/FLG are NC (not connected) pins.

BSTBY

BIN1

BIN2

BPWM

BO1

BO2

VM

GND

ASTBY

AIN1

AIN2

APWM

AO1

AO2

PGND

Control logic

(Ch. B)

Control logic

(Ch. A)

Bridge Driver

(Ch. B)

Bridge Driver

(Ch. A)

TSD