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Power Management ICs Forum Discussions

monil9
Level 2
Level 2
First like received 5 sign-ins First solution authored

we have developed 2kW PFC Board with ICE3PCS01G.
when I did first power on with 12.15VDC,  Vref not coming from ic.
after that I replace the new chip, then it worked fine. But again after changing the nearest components during troubleshooting, the same problem came (vref gone), But ICOMP=5V is coming. 4 nos of ic got damaged and the same problem coming.

please suggest a solution.

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1 Solution

THANK YOU SIR,

ALL IC RUNNING WITH VCC=13.9VDC

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2 Replies
喜马拉雅之雪
Employee

Thanks for your comments.

For the IC, the turn-on voltage is between 11.5~12.9V, turn of is between 10.5~11.9V.

So, for 12.15V, if  the Vcc is from 12.9V down to it, the IC will run. If vcc is from 10V up to 12.15V, the IC is off and can't work.

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THANK YOU SIR,

ALL IC RUNNING WITH VCC=13.9VDC

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