Instruction Manual

File Name:PSPA-1000-SPEC 2022-08-08
1000W with PFC and Parallel Function
PSPA-1000 series
2.Remote ON-OFF Control
※ The power supply can be turned ON-OFF individually or along with other units by using the “Remote ON-OFF” function.
3.POK signal
※ POK signal indicates the output status of the power supply. It can operate in two ways : One is sinking current from external TTL signal ; the other is
sending out a TTL voltage signal.
Sinking current from external TTL signal: The maximum sink current is 10mA and the maximum external voltage is 5.6V.◎
4.Current Sharing with Remote Sense
※ Difference of output voltages among parallel units should be less than 0.2V.
PSPA-1000 has the built-in active current sharing function and can be connected in parallel, up to 4 units, to provide higher output power as exhibited below :
※ The total output current must not exceed the value determined by the following equation:
※ When the total output current is less than 5% of the total rated current, or say (5% of Rated current per unit)×(Number of unit)
the current shared among units may not be fully balanced.
Maximum output current at parallel operation=(Rated current per unit)×(Number of unit)×0.9
※The power supplies should be paralleled using short and large diameter wiring and then connected to the load.
Application
Circuit
◎ For Remote Sense, please refer to “Remote Sense” section.
+V +V +V +V+V +V +V +V+V +V +V +V+V +V +V +V-V -V -V -V-V -V -V -V-V -V -V -V-V -V -V -V
RS+ RS+ RS+ RS+ RS- RS- RS- RS-
L L L LN N N NFG FG FG FGP P P P POK POK POK POK
LOAD
-V +V
Between R.C. and R.C.G
Switch Short
Switch Open
Power Supply Status
ON
OFF
R.C.G R.C.G R.C.G R.C.G R.C. R.C. R.C. R.C.
+V+V+V+V-V-V-V-V
RS+ RS-
LNFGP POK R.C.G R.C.
switch
+V+V+V+V-V-V-V-V
RS+ RS-
LNFGP POK R.C.G R.C.