CINT1275
275W Single Output
Industrial Series
Fan Output – J301
J301 provides a 12V@1A output to support a system cooling fan. The fan output is always available when AC input is
present, so it also can be used for a 12V standby output is so desired.
AC Power Failure/DC OK Current Share and Inhibit Signals – J201
Note:
Because Power Fail and DC OK use the same pin, the signals can
be monitored as follows:
DC OK: When J201-Pin 9 is HIGH
AC Power Fail: When J201-Pin 9 is LOW
2. Inhibit
Remote inhibit control of the DC output.
J201 pin 5 open
= ON
J201 pin 5 LOW or GND
= OFF
Figure 2: Inhibit Circuit
Vo+
Vo-
3. Current Sharing/Remote Sense
J302
J303
The outputs of N+1 (N=1,2…5) models can be shared. It is shown in Figure 3, one
load-share controller is required for each model and circuits are identical when
N+ 1 identical models are used.
Power Supply 1
Power Supply 2
Power Supply 3
J201pin 1
J201pin 3
S+
S+
S+
Terminals J302 and J303 are connected to the Vo+ and Vo-, respectively, of the
first power model. The Vo+ and Vo- correspond to the other models positive and
negative output pins. The Vo+ connects to positive output bus to the load and Vo-
connects the negative output bus to the load.
S-
J201pin 4
J302
The J201 pin1 and pin3 connects to the S+ and S-, respectively, of the first power
models. The S+ and S- correspond to the other models J201 pin1 and pin3. The
S+ connects to positive output bus and S- connects to negative output bus.
Load -
Load +
J303
J201pin 1
J201pin 3
S-
Remote Sense < 250mV drop compensation:
The J201 Pin4 connects to current sharing bus that it connects to
other models J201 pin4.
J201pin 4
J302
J303
J201pin 1
J201pin 3
S-
Figure 3: Current Share Method
J201pin 4
Current Sharing Bus
www.slpower.com
CINT1275 REV 1.2 15-JAN-13
4
SLPOWER [ SL Power Electronics ]
