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LM5149: Driving GaN mosfet using LM5149

Part Number: LM5149

We are designing a  (48 to 13.8) V dc-dc for a 500 W dc-dc.

Planning to make 2 phase interleaving using LM5149.

Can we use LMG2100 GaN fet as half bridge module for interfacing with LM5149

  • Hi Biswajit,

    From preliminary tests yes LM5149 can drive LMG2100 GaN MOSFETs yes.

    However LM5149 SW nodes will have to be GND, and it will have to run in FPWM.

    It cannot run in PFM for low-IQ and light load efficiency.

    Hope this helps,