Data Sheet

SINGLE PHASE FULL WAVE DIRECT PWM MOTOR DRIVER

AM4962

Apr. 2011

Rev. 1. 2

BCD Semiconductor Manufacturing Limited

13

0

1020304050

60

70

80

90

100

0

20

40

60

80

100

R3=390k, R1, R2, R4, R5, R6 Open

R3=1M, R1, R2, R4, R5, R6 Open

R1, R2, R3, R4, R5, R6 Open

PWM (%)

0

1020

30

40

5060708090

100

0

20

40

60

80

100

R4=150k, R1, R2, R3, R4, R6 Open

R4=390k, R1, R2, R3, R5, R6 Open

R1, R2, R3, R4, R5, R6 Open

PWM (%)

Typical Application (Note 4, Continued)

Adjust maximum duty of output PWM:

1. The default maximum output PWM duty is 100% (application circuit 1).

2. Adding R3 can decrease maximum output PWM duty (see Figure 16).

3. Adding R4 can increase maximum output PWM duty (see Figure 17).

Figure 16

Figure 17