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Typical Application Diagrams

V

IN

PWM

1

2

3

6

7

8

4

5

Timing/

Isolation

V

OUT

FAN3227

Vbias

V

IN

PWMA

PWMB

1

2

3

6

7

8

4

5

VDD

GND

OUTB

OUTA

FAN3227

Figure 55. Forw ard Converter

w ith Synchronous Rectification

Figure 56.

Prim ary-Side Dual Driver

in a Push-Pull Converter

PWM-A

PWM-B

1

3

4

PWM-C

PWM-D

Phase Shift

Controller

FAN3227

FAN3227

V

IN

Vbias

Vbias

1

2

3

6

7

8

4

5

VDD

GND

ENB

ENA

A

B

2

6

7

8

5

VDD

GND

ENB

ENA

A

B

Figure 57. Phase-Shifted Full-Bridge w ith Tw o Gate Drive Transform ers (Sim plified)