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it is a noval idea to use opto couplers to detect OPS current - thouse it would have been better if the sampling is done on the output devices directly, as supposed on the drivers as shown.
basically, you use the Re resistors as sample resistors for OPS current. Rd/R1/Cd/Opt form the rest of the sampling circuit. Rd/R1 determines the gain on the input, Cd smoothes out the a/c transit.
Rt/Opt forms the feedback loop. and with Rd/R1/Rt you will determine the temperature coefficient of the compensation loop.
will this work in your simulation? |
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