AnsweredAssumed Answered

ADP1048 PFC Problem

Question asked by shine on Apr 12, 2013
Latest reply on Apr 10, 2014 by wulox

did anyone try this PFC IC before? so far, my pfc can go 1.3kw with this IC, but if i increase load, the IC will shut down, i had turned off all protections in GUI setting. when IC off, i measure AC_OK, PGOOD signals are ok. so i believe there maybe some internal latched.

there are only a few input signal for IC, VAC , VFB, OVP, ILIM, IBAL, CS-, CS+, for testing purpose, i short ILIM, IBAL to GND. the resistor between CS is 0.02 ohm.

i can not find any problem with my input signal. but why IC still off when load increasing?