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0 votes
1 answer
79 views

Efficiency curve of synchronous DC-DC controller with external MOSFETs

I'm designing a 48V to 12V, 300W buck converter. I am considering using the LM5148 controller and NTMFSC004N08MC switches. I'm confused about how synchronous DC-DC controllers can list efficiency ...
w00t's user avatar
  • 198
2 votes
1 answer
374 views

In MOSFET switching loss calculation, where does the 0.5 factor come from?

I am going through this material for calculating the switching loss of the mosfet.(https://www.monolithicpower.com/frequency-selection-in-switching-power-supply-designs-part-i) The switching loss ...
Confused's user avatar
  • 2,593
1 vote
0 answers
390 views

Reverse recovery body diode in synchronous buck converter

I am building a synchronous buck converter from 72 V to 4.2 V 2 A. Is there a way to lower the losses of the lowside MOSFET’s body diode? I am using a switching frequency of 300 kHz and with the ...
p_karis's user avatar
  • 103