Designing LED driver using top switch

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When we use top switch for LED driver which part of circuit get feedback from output current?
I designed a LED driver with 27V and 0.5A by PI expert. I attached the schematic.
Best Regard

LED_driver.pdf175.3 KB

Hi zahra,
It seems that TOPSwitch does not have a built in constant current mode. You would have to add external circuitry to achieve constant current regulation. I recommend that you use our LED lighting products for your LED driver application. You can check on this link to see which of our products satisfy your needs.

Agree with the comment above me.

Thank you kindly for your help
Best Regard

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