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ABC200 Series

tech.support@psbel.com

The AC-DC power supply provides a fixed threshold overvoltage (OV) protection implemented with a HW comparator. Once

an OV condition has been triggered, the supply will shut down and latch the fault condition. The latch can be unlocked by

disconnecting the supply from the AC mains only.

The main output current limitation will decrease with linear derating to 50% at 70 ºC if the ambient (inlet) temperature increases

beyond 50 °C (see Figure 13).

Figure 13. Output Current Capacity Derating

The Out-OK output gives a status indication of the converter and the output voltages. It can be used for control functions such as

data protection, central system monitoring or as a part of a self-testing system. Connecting the Out-OK as shown in Figure 14,

VOK <1.0 V indicates the output voltage(s) of the converter are within the range.

Note: Using the potentiometer, the monitor level tracks the programmed output voltage. In an error condition, if the output voltage

is out of range due to overload or an external over voltage, VOK will approach Vp. The output is

formed by an NPN transistor. The signal is isolated from the output.

Figure 14. Power Good signal