ADJUSTABLE-SPEED SINGLE-PHASE FULL-WAVE PRE-DRIVER FOR MOTOR

AM4967

Data Sheet

4

Oct. 2008 Rev. 1. 2

BCD Semiconductor Manufacturing Limited

Functional Block Diagram

Figure 3. Functional Block Diagram of AM4967

5V

Reference

Controller

VCC

VREF

HIN+

HIN-

1

Lock Shutdown

and

Auto Restart

Oscillation

Hysteresis

Amp

Thermal Shutdown

CT

LS VMIN VPWM

COSC

CS

GND

OUT2

OUT2B

OUT1

OUT1B

FG/RD

2

3

4

5

67

8

9

10

11

12

13

14

15

16

Hysteresis

Amp

Pre-

driver