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?