At 10:04 AM (-0700) 7/27/2016, ericsson.sunshine wrote:
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Hi, Jim:
Thank you. I am trying.
But some info like "discharge" mechanism, not mentioned in the datasheet, I'm not sure if it's important or not.
It's a switch, dumping the timing ramp... download the AppNote:
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And the current feedback to control the PWM on\off (through a comparator), datasheet said that there is a amplifier for the shunt res's current before doing this PWM comparator, that's not clear too.
As you said, it depends on the datasheet's content. (Vlad said it too.)
Best regards.
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And years of experience helps as well... I was just musing that I designed my first OpAmp (MC1530/31) some 53 years ago! And it's still being sold!
After all those years of IC design I tend to know exactly what's in a chip just from the datasheet/block diagram without ever seeing the schematic >:-}
...Jim Thompson
Web Site: <>
