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LM5021: New road-map device consult

Stanley Dai
Expert 5810 points
Part Number: LM5021

Hi Team,

Is there any flyback controller which can support duty-cycle>80%, integrated output voltage protection? Thanks.

B&R

Stanley

  • 0
    TI__Guru 66065 points

    Hello,

    I know that the LM5021 and the UCC28C4x family of devices achieve greater than 80% duty cycle.  However, they do not have OVP protection.

    The UCC2870x/UCC2871x devices to have OVP protection that is sensed on the primary but the duty cycle of these devices is limited to less than 57% roughly.

    I don't know of any other HVC flyback controllers that have integrated OVP.

    Regards,