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Switch mode power supplies

Knighthawk_140 1 month ago

Hello, the Elite

Any one attempted to build a simple descrite, switch mode power supply

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JWx 1 month ago +2

there was a design challenge some time ago

dang74 1 month ago

When you say discrete do you mean limiting yourself to transistors? I seem to recall that your recent ADC project has a ramp generator built from a BJT. I suppose you could use that to drive a MOSFET switch connected to an inductor.
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Knighthawk_140 1 month ago in reply to dang74

Lol, I have not quite decided on the Topology yet, just to correct you, my adc used a LM1117 adj in CC mode, and not a BJT.

this is going to be another I was bored at home, so I made a descrete switch mode power supply.
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dang74 1 month ago in reply to Knighthawk_140

Either way, it will be interesting to see what you come up with... if you allow yourself to use opamps and comparators the potential to build something cool will be there.
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JWx 1 month ago

there was a design challenge some time ago
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Knighthawk_140 24 days ago

My weekend build, see how this does. 12V to 5V buck with an off the beaten path topology, none standard
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dang74 24 days ago in reply to Knighthawk_140

Nice. The Set/Reset flip flop and surrounding circuit reminds me of the guts of a 555 timer.
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