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About sequencer with adjustable VFB voltage

Guru 19495 points
Other Parts Discussed in Thread: UCD90160

I want to replace LTC2977 to UCD series.

But customer interested in adjustable VFB on LTC2977.

(Below datasheet P82)

Can UCD90160 use the same function?

(Is UCD90160 have to use GPIO pin?)

If can't, is there TI device matching customer request?

 

Best regards,

Satoshi

  • You are talking about margining function for voltage rails. All UCD90xx sequencers have margining function. The difference is, LTC sequencers use DAC to do margining, and UCD sequencers use Fast PWM with a low-pass filter to do margining. This app note explains how margining works.

    Regards,

    Zhiyuan