Author Topic: Where's my dead time??  (Read 4511 times)

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Offline danadak

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Re: Where's my dead time??
« Reply #25 on: January 16, 2017, 11:56:08 am »
These might help, attached.


Regards, Dana.
Love Cypress PSOC, ATTiny, Bit Slice, OpAmps, Oscilloscopes, and Analog Gurus like Pease, Miller, Widlar, Dobkin, obsessed with being an engineer
 

Offline HackedFridgeMagnet

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Re: Where's my dead time??
« Reply #26 on: January 16, 2017, 10:14:12 pm »
Flyback diodes? seems now like the obvious solution to the 700 volts.
 

Offline peter.mitchell

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Re: Where's my dead time??
« Reply #27 on: January 16, 2017, 11:06:09 pm »
your FETs are insufficiently rated.

the IRFP460 is rated to 500v, you need 650v~ absolute minimum.

when one FET turns on, the other FET will see 2x+ the supply voltage because the primary will act as an autotransformer.

if line voltage is 230vac, thats 325vdc peak rectified,2x that is 650.
 


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