TDK-Lambda HFE2500 Series Instruction Manual page 11

1.8 OVER CURRENT PROGRAMMING by External Voltage
Over Current Protection (OCP) can be programmed by external voltage source 0~5V. Nominal OCP value is achieved by connecting to internal
5V source (V_REF, B19) or to external voltage source. By changing the Current Programming Voltage OCP level could be decreased down to
~40% of Nominal Output Current.
Fig-1.8
1.8.1 CURRENT PROGRAMMING By PMBUS (Optional)
Over Current Protection (OCP) can be programmed by PMBUS with a range of 50% ~ 110% of Nominal Output Current.
ATTENTION: If PMBus is used for current programming, the Reference voltage will not be fixed to 5V but variable.
Fig-1.8.1
1.9 SUPERVISORY SIGNALS (Typical Connection)
The following supervisory signals are accessible:
• DC OK
• AC FAIL
• PS EXIST
• TEMP ALARM
Fig-1.9
SIGNAL RETURN and mentioned signals are isolated from the output terminals and -SENSE.
These signals are Open Collector type (max 15V, max 10mA), isolated from Output and referenced to "SIGNAL RETURN".
Fig-1.9.1
Open collector signals are shunted by internal 24V zener
HFE2500
+5V_TRIM
CURRENT PROG
Fig-1.8.2
1.8.2 OUTPUT CURRENT PROGRAMMING by External
Potentiometer (Not Applicable to supplies with PMBus Option).
11
B22
B11