TB6552FN/FNG/FL/FLG

2007-4-2

3

Input

Output

IN1

IN2

STBY

PWM

O1

O2

Mode

H

H

H

H

L

L

L

Short brake

H

L

H

CW/CCW

L

H

H

L

L

L

Short brake

H

H

L

CCW/CW

H

L

H

L

L

L

Short brake

H

L

L

H

L

OFF

(high impedance)

Stop

H

H/L

H/L

L

L

OFF

(high impedance)

Standby

Operating Description

• PWM control function

Speed can be controlled by inputting the high-level or low-level PWM signal to the pin PWM.

When PWM control is provided, normal operation and short brake operation are repeated.

To prevent penetrating current, dead time (t2 and t4) is provided in the IC.

Note: Be sure to set the PWM pin to high if the PWM control function is not used.

t2

GND

Output Voltage Waveform

(O1)

t1

t3

t5

t4

VM

M

GND

PWM ON

t1

O1

O2

VM

M

GND

PWM ON

→ OFF

t2

= 300 ns (typ.)

O1

O2

VM

M

GND

PWM OFF

t3

O1

O2

VM

M

GND

PWM OFF

→ ON

t4

= 300 ns (typ.)

O1

O2

PWM ON

t5

VM

M

GND

O1

O2