https://community.nxp.com/t5/Power-Management/Request-for-MOSFET-Power-Loss-Information-MC33HB2000FK/m-p/2177962#M4716 <P>Dear Anje,</P> <P>In the RD-BESSK358BMU reference design, the H-bridge is used to drive contactors, which are typically switched infrequently and at low PWM frequencies (if any). So for this use case, the switching losses of the MC33HB2000FK are negligible. The primary thermal design consideration should focus on conduction losses, which can be estimated using the provided Rdson values and expected load current.</P> <P>BRs, Tomas</P> Tue, 30 Sep 2025 07:03:49 GMT TomasVaverka 2025-09-30T07:03:49Z https://community.nxp.com/t5/Power-Management/Request-for-MOSFET-Power-Loss-Information-MC33HB2000FK/m-p/2177309#M4714 <P>Dear NXP Support Team,</P><P>I am working on a BMS design and planning to use the MC33HB2000FK (as in the RD-BESSK358BMU reference design).</P><P>I would like to estimate the MOSFET losses of the MC33HB2000FK for PCB thermal design purposes.</P><P>I have only found information on the MOSFET’s Rdson (for conduction losses), but nothing regarding switching losses. Is there any available information for switching loss estimation (e.g., Ciss, Coss, Crss, Rgate, or Eon/Eoff)?</P><P>Thank you very much for your support.</P><P>Best regards,<BR />Anje Rozas Lizarralde<BR />Ikerlan</P> Mon, 29 Sep 2025 08:55:11 GMT https://community.nxp.com/t5/Power-Management/Request-for-MOSFET-Power-Loss-Information-MC33HB2000FK/m-p/2177309#M4714 Anje 2025-09-29T08:55:11Z https://community.nxp.com/t5/Power-Management/Request-for-MOSFET-Power-Loss-Information-MC33HB2000FK/m-p/2177962#M4716 <P>Dear Anje,</P> <P>In the RD-BESSK358BMU reference design, the H-bridge is used to drive contactors, which are typically switched infrequently and at low PWM frequencies (if any). So for this use case, the switching losses of the MC33HB2000FK are negligible. The primary thermal design consideration should focus on conduction losses, which can be estimated using the provided Rdson values and expected load current.</P> <P>BRs, Tomas</P> Tue, 30 Sep 2025 07:03:49 GMT https://community.nxp.com/t5/Power-Management/Request-for-MOSFET-Power-Loss-Information-MC33HB2000FK/m-p/2177962#M4716 TomasVaverka 2025-09-30T07:03:49Z