CINT1275

275W Single Output

Industrial Series

www.slpower.com

CINT1275 REV 1.2 15-JAN-13

4

J302

J303

J201 pin 1

S+

J201 pin 3

S-

J201 pin 4

J302

J303

J201 pin 1

S+

Load +

J201 pin 3

S-

J201 pin 4

J302

J303

J201 pin 1

S+

J201 pin 3

S-

J201 pin 4

Power Supply 1

Power Supply 2

Power Supply 3

Vo+

Vo-

Current Sharing Bus

Load -

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

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

3.

Current Sharing/Remote Sense

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.

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.

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.

Remote Sense < 250mV drop compensation:

The J201 Pin4 connects to current sharing bus that it connects to

other models J201 pin4.

Figure 3: Current Share Method

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