Isolated and Regulated 40 WATT Modular DC/DC Converters

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CTRL

+

-

3

2

1

Converter

ON/OFF Control

+ Vin

- Vin

ON/OFF Control application

Sync

+

-

3

2

4

Converter 1

+ Vin

- Vin

+

-

3

2

4

Converter 2

CLK

20%

80%

CLK Signal

2N7000

Sync

APPLICATION OF SYNCHRONIZATION

1. The unit is capable of external synchronization from an independent

time base with a switching rate between 200kHz and 215kHz

2. The amplitude of the synchronizing pulse train is TTL compatible

3. The duty cycle of the CLK should be 20% high and 80% low

4. Synchronization is referenced to negative input (-Vin)