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Nov 2, 2021

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Rev g

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Doc: DS_M641 Series

M641 SERIES DC/DC POWER SUPPLY

Cham,

www.enercon-europe.com

Netanya, www.enercon.co.il

Gurgaon, www.mpsindia.in

Switzerland

sales@enercon-europe.com

Israel

sales@enercon.co.il

India

sales@mpsindia.in

Functions and Signals

INHIBIT

The INHIBIT signal is used to turn the power supply ON and OFF.

TTL “1”or OPEN – Power supply is ON (For normal operation, leave this pin unconnected.) TTL

“0” or SHORT to SIGNAL RTN – Power supply is OFF.

SYNC

The SYNC signal is used to allow the power supply's switching frequency to sync with the system clock.

The external clock's frequency can be 250 kHz ± 10 kHz.

When this pin is left open (unconnected) the power supply will synchronize to its internal clock, set at

250 kHz ± 10 kHz

SIGNAL RTN

The SIGNAL RTN is used as a return path for the SYNC and INHIBIT signals.

This pin is referenced to VIN RTN.