Hi,
I would like to know LM3445 can recognize PWM dimming signal 1% duty?
It based on PWM frequency or any other limitation?
Thanks!
Jeff
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Hi,
I would like to know LM3445 can recognize PWM dimming signal 1% duty?
It based on PWM frequency or any other limitation?
Thanks!
Jeff
Hi Jeff,
It can support dimming down to 1%. Are you planning on using the Valley Fill method?
LM3445 can support both at the same time with external circuitry.
Universal input triac dimming will be difficult due to the EMI filter and damper capacitor. The EMI capacitor value will be determined at low input voltage making the high voltage triac interfacing more difficult.
Regards,