Hello,
If the output is loaded and you trigger OCP the FETs will stop switching and the boost capacitor voltage will decrease. That is what is expected.
This function is really for inrush current limiting to protect the FETs. PFC boost design are protected…
Part Number: UCC28064A HI TI,
I have Current distortion issue with UCC28064A at 85Vac,160W.
Current distortion occurs near peak voltage.
Could you give me some advice on the solution?
Regards,
Part Number: UCC28064A Hi Ulrich
Ref PMP30763 Rev_C PFC Schematic.SchDoc
1. What is the purpose D14 ? is this for protection ?
Please advice
Regards
Sam
Part Number: UCC28064A Other Parts Discussed in Thread: BQSTUDIO , BQ76952 , BQ76940 , EV2400 , Hello Team,
I am new to charger development and I have a few questions to understand better about TIs ecosystem for charger development.
I have previously designed…
Part Number: UCC28064A Other Parts Discussed in Thread: AMC1301 , Hi,
According (TM)transient mode control PFC referance designs I have to use inductor with auxilary windings for ZCD pins.
I want to use standart fixed inductor in the PFC design is there…
Part Number: UCC28064A HI TI,
I have Current distortion issue with UCC28064A at 264Vac,160W. (Abrupt current increase) It does not occur when the voltage is below 220Vac.
Current distortion occurs near peak voltage.
At the peak voltage, two MOSFETs turned…
Hi Sam,
Diode D2 and transistor Q11 form an external soft-start function for the UCC28064A. At start-up, when AUX_15V is low, VCC input voltage is below spec and U3 does not function. VREF is driven internally to 0V (AGND). The base of Q11 is pulled to…