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Original question:

LM5023: LM5023 ON/OFF control

LM5023: Quasi-Resonant Current Mode PWM Controller with higher gate driver current

Jason Shen
Intellectual 1945 points
Part Number: LM5023
Other Parts Discussed in Thread: UCC27531

Dears

We have win the LM5023 in some case, and customer want to have a upgrade one with 2A gate driver capability, so want to check with you if we have a solution.

By the way, do we have a Quasi-Resonant Current Mode PWM Controller which can support 5V supply.

Thanks 

Jun Shen

  • 0
    TI__Guru 66135 points

    Hello Jun,

    The LM5023 is designed to run with an off line or high input voltage application.  This requires higher VCCon thresholds to keep the VCC capacitors reasonable in size.   Also to drive FET's in these applications requires 8 to 12V.

    At this time there are no plans for future spins of the LM5023 with 2 A drivers.  You could use an external gate drive circuit if you need  2A of gate drive.  The UCC27531 can support 2.5 A of source current and 5 A of sink current.

    Regards,