V-Infinity, LLC, 9615 SW Allen Blvd Suite 103, Beaverton, OR 97005

www.v-infinity.com

1-866-372-1258

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VQB75- Single Output Brick DC-DC Converter

Application Notes

Derating:

The operating case temperature range of the VQB75 series is -40°C to +100°C. When operating the VQB75, proper derating or

cooling is needed. Following is the derating curve of VQB75 without heat sink.

Where:

The power dissapation (Pd) is

Pd= Pi - Po = Po (1-

The thermal resistances are listed below.

The temperature rise (D T):

D

T = Pd * Rca

Remote ON/OFF Control

The VQB75 series allows the user to switch the module on and off electronically with the remote on/off feature. The VQB75

series is available with “positive logic” or “negative logic” options.