I the datasheet for UCC28019A limits its application for less than 2kW and honestly for such high power levels I would recommend using an interleaved CCM controller like UCC28070A.
Please find attached a reference design for a 3kW power supply…
Part Number: UCC28070 Hi TI experts:
I use the UCC28070 in my 2KW AC/DC supply solution,
the boost Lm is about 22uH which calculated by the UCC28070 design tool。
but the in Webench the Lm is 22uH，
but I found the Lm is 200UH in PMP4259 which is the 3KW…
Thank you for your reply. Here is my schematic.In this schematic I don't use flyback power.
I use external auxiliary power module to supply control circuit power and not connect a high voltage input.
I run the pfc open loop with VCC=15V, Vsense…
Part Number: UCC28951 Other Parts Discussed in Thread: UCC28070 , , UCC28950 , UCC28070A One customer is looking for Full-Bridge TI-Design, required spec is below;
・Input: 385VDC from UCC28070 (375V ~ 395V)
・Output: 140V / 15.3A (2142W) ~ 21.4A (3000W)
You need a two stage approach, PFC + DC/DC isolation stage.
For the PFC stage I recommend the UCC28180 PFC controller or the UCC28070 two phase interleaved PFC stage controller
For the DC/DC stage…
Thanks for your interest in UCC28070. Starting on page 29 of the UCC28070 datasheet is a design example which can help you to select the passive components for the PFC stage. You also might have interest in PMP4259 which is a 3kW PFC stage…
I assume you need an 85Vac to 265Vac input voltage range?
The output is 1.2kW so it will most likely need a PFC front end to converter the AC line to a 380V to 400V BUS and then a phase shifted full bridge to converter the PFC DC voltage down to 12V…
Did you build the PMP4259 reference design ?
Or are we still talking about the pfc circuit attached in the initial question?
Have you found out what is pulling the SS pin low?
The PMP4259 reference design does not have Q5 in the BOM and it is not fitted…
PN Note: (-Q1) when auto PN is substituted
EV Charging Station
LM5021 (-Q1) + UCC28180
PMP10215 Universal Input to 3.3V, 12V…