Primary Inhibit (Remote On/Off)

PST22 Rev. 01

Page 5 of 11

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

Inhibit and -In) or enables (logic high TTL, pull up or open-circuit

between Inhibit and -In) the converter. This signal is referenced to the

input voltage and will disable/enable all outputs at the same �me.In

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

sequence the ac�va�on of the different converters.

Output Voltage Adjustment

The converter offer adjustment for each output voltage V1,V2,V3 thou-

gh a poten�ometer.In case of V3 is configured in low power version, the

ajustment is factory set for V3.

Sense Lines

This feature enable compensa�on of voltage drop across the connector

contacts and the load lines. This fonc�onnality is implemented on V1

only.

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

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

Output type

Total drop

Nega�ve line drop

V1

< 0.5V

< 0.25V

Powergood

The converter has different levels of signalling the good opera�on:

An input green led on the front panel indicate that input voltage is pre-

sent at the input a�er the internal fuse .

Three green leds on the front panel indicate the presence of each

output voltage .

An open collector Powergood (pin 22 and 24) is ac�ve low if all the

output voltages are working correctly.

Waveforms

Efficiency vs Load and Line

30,0%

40,0%

50,0%

60,0%

70,0%

80,0%

90,0%

20%

40%

60%

80%

100%

Output Power

Vin min.

Vin Nom.

Vin max.

Typical values for PST 2272-5V100-24150-

Auxiliary Func�ons