RATING OF MOSFET

Champak Kundu

Other Parts Discussed in Thread: UCC28070

IN CASE OF A NON-ISOLATED BOOST CONVERTER FOR 1 kWatts OUTPUT POWER, WHICH IS OPERATING FROM 230V AC INPUT AND WHOSE OUTPUT VOLTAGE IS 400V DC, WHICH MOSFET IS SUITABLE FOR THIS SYSTEM?(Please Suggest Ratings of MOSFET).

over 4 years ago

0 Champak Kundu over 4 years ago

Prodigy 50 points

Please, also suggests the Rating of MOSFET if BOOST Converter operated from an input range of AC voltage which is 90V-265V and Output power is 1kW

0 Ulrich Goerke over 4 years ago in reply to Champak Kundu

TI__Mastermind 40580 points

Hello Champak,

Form your request, it is apparent that your are considering a boost power-factor-correction (PFC) design. For a 400V output, usually a 500V or 600V rated MOSFET is chosen. The on-resistance required depends on a number of factors, but usually, a main goal is to minimize loss (but also to maintain a reasonable cost). Operating down to 90Vac will require larger MOSFETs.

The UCC28070 PFC controller is well suited for 1kW applications, and the datasheet https://www.ti.com/lit/gpn/ucc28070 contains MOSFET design information in Section 8.2.2.4. THer are several App-Notes available in the UCC28070 product folder https://www.ti.com/product/UCC28070 and this App-Note https://www.ti.com/lit/pdf/slua479 has a more detailed design procedure to help with MOSFET selection.

Regards,
Ulrich

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RATING OF MOSFET