Switching Constant-Current Application Circuit Composed Of W723

Published:2011/6/14 23:18:00 Author:Robert | Keyword: Switching, Constant-Current, Application | From:SeekIC

The picture shows the constant-current switching regulator application circuit composed of W723 multi-port adjustable positive regulator. Its output current is 1A. In the circuit in the picture, the R1, R2 would divide the W723's reference voltage (about 7.2V) to about 3V and then add it into the in-phase input port. Also the resistance R3, R4 would divide the reference voltage to add into the out-phase input port. The R4's low port is connected with the current-divider resistance R5. When the out-phase input and in-phase input are nearly balanced, the current-divider resistance R5's voltage drop would be about 1V. R6 is used to adjust the limiting value of output ripple current.



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