Dc Bosst up circuit

176

06:27:45

DC boost up circuit. 9v dc to 24vdc

published 7 years ago

PrathikP

7 years ago

For some reason, it doesn't look like your MOSFET's switching properly. Also, your circuit could use some feedback. Check this out: http://everycircuit.com/circuit/5388359727054848

PrathikP

7 years ago

Even the feedback network of my circuit is not perfect. It needs an error amp. For some reason, it doesn't simulate properly, because of which I had to come up with this feedback system that maintains a constant output voltage when the circuit is unloaded. Hopefully you'll get some ideas from it

BillyT

7 years ago

A few ideas to play with, always use the earth in EC, check out my accompanying circuit as a basis for boost circuits; http://everycircuit.com/circuit/5034191100837888

rich11292000

7 years ago

Ground the battery negative

PrathikP

7 years ago

@billyT the drive to your MOSFET must be altered a bit. The drive voltage doesn't go all the way to zero. Because the MOSFET's Vto is 430mV, it's constantly on and shorting the power supply. http://everycircuit.com/circuit/5631196038692864

PrathikP

7 years ago

And for a 100kHz switching frequency, 1uH is way too low

BillyT

7 years ago

To overcome a couple of problems, try http://everycircuit.com/circuit/6655878208684032

hurz

7 years ago

as rich11292000 already said, there is no ground reference in this circuit except the logic train does refer to. http://everycircuit.com/circuit/6641206399074304

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