Other Parts Discussed in Thread: LM25118, LM5176, LM5175
I was presented with this challenge and need a device recommendation. Will LM5145 be suitable?
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“We will need to step down from 12V and need to be able to have Vout = Vin (understand not possible due to RDS on and inductor resistance) but would like to have 100% duty cycle capable.
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Nominal Vin is 12V +/- 10%. Vout = Vin and digitally controlled down to anything lower (will use a digital POT as the feedback element).
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Regulation tolerance is not that important but would prefer a higher freq. of operation to keep inductor size reasonable.
Vin = 4V min to 17V max (will LM5145 work below Vin=6V?)
Vout = ~ Vin …..100% duty cycle capable
Iout = 5A “
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Is a buck boost like LM25118 needed in a situation like this or can a buck controller like LM5145 support this??
