blasphemy000
New member
I was just looking over the datasheet for these NCP1654 PFC Controllers and the gate output of these devices are meant to directly drive a MOSFET or IGBT. They can source/sink 1.5A and are in a totem-pole configuration. So for my lower power model I will probably just drive the gates directly from the PFC controller(Which is how it's done in the datasheet and application notes examples) and in the larger power controller I've ordered some MC34152-D SOIC-8 devices which are dual 1.5A(Source/Sink) low side gate drivers for use in PFC and other applications.
I'm currently working on the calculations/schematic/board design of the 1000W(400VDC@2.5A) PFC design that I will be using as a test-bed/prototype. As soon as I get everything drawn up I will be posting the 1000W design as well. My chips should be here in a few days so I can get started working on this...I'm also looking for a decent LCR meter so that I can wind my own inductors for these PFCs because the large inductor(s) that I will be needing for the full-scale device just can't be bought.
Also, MicrosiM, I really like your idea of building an interleaved PFC for the full-scale device. I think dual or even quad PFCs interleaved together might be a better choice than trying to build one massive PFC just due to the crazy inductor currents that I have calculated for a single PFC stage. So I will be looking into this option today as well.
I'm currently working on the calculations/schematic/board design of the 1000W(400VDC@2.5A) PFC design that I will be using as a test-bed/prototype. As soon as I get everything drawn up I will be posting the 1000W design as well. My chips should be here in a few days so I can get started working on this...I'm also looking for a decent LCR meter so that I can wind my own inductors for these PFCs because the large inductor(s) that I will be needing for the full-scale device just can't be bought.
Also, MicrosiM, I really like your idea of building an interleaved PFC for the full-scale device. I think dual or even quad PFCs interleaved together might be a better choice than trying to build one massive PFC just due to the crazy inductor currents that I have calculated for a single PFC stage. So I will be looking into this option today as well.