Primary Inhibit (Remote On/Off)

PST14 Rev. 00

Page 7 of 20

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The inhibit input disables (logic low, pull down or short circuit between

INH+ and -IN) or enables (logic high TTL, pull up or open-circuit) the

converter. This signal is referenced to the input voltage and will disable/

enable all outputs at the same �me when inhibi�on & parallel cable is

used. In systems consis�ng of several converters, this feature may be

used to sequence the ac�va�on of the different converters if inhibi�on

is used separately.

Output Voltage Adjustment

The converter outputs can be adjustable by poten�ometer or an

external voltage between trim and -sense (1,23V for nominal).

Sense Lines

This feature enable compensa�on of voltage drop accross the

connector contacts and the load lines.

The voltage between any sense line and its respec�ve power output pin

(as measured on the connector) should not exceed the following values

at nominal output voltage.

Output type

Total drop

Nega�ve line drop

V1

< 0.5V

< 0.25V

Powergood

Two green leds at input & output indicate the presence of output

voltages .

An open collector PGood signal (J10) is open when output failed or

closed when unit operates properly.

Waveforms

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Auxiliary Func�ons

Output Noise (PST14B48-48250)

Current Limita�on (PST14B48-48250)

Paralleling signal

When several units of the same type are used in paralleled or in

redundant system, the PR+ PR- of each unit need to be connected

together through J4, J11 for accurate current sharing. Accessories cable

can be used.

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Efficiency vs input & load