Dimmer circuit for led lamp

viny thambi

Prodigy 40 points

Other Parts Discussed in Thread: PMP6023

Hi,

I need to control brightness of led lamp which works on 180-277vac, led drive current current 700mA, 90lumen/watt.

Can anyone suggest me a solution to dim these kind of led lamps.

over 9 years ago

0 David Zhang over 9 years ago

TI__Expert 3495 points

Viny:
LED lamps can be dimmed by the triac dimmers at the AC input or you can use a micro controller at the secondary side to do analog or PWM dimming .
David Zhang

0 viny thambi over 9 years ago in reply to David Zhang

Prodigy 40 points

Thank you David

0 viny thambi over 9 years ago in reply to David Zhang

Prodigy 40 points

David:
Is it possible to give programmable input to triac?

0 David Zhang over 9 years ago in reply to viny thambi

TI__Expert 3495 points

Viny:
If you want programmable input, you can try 0-10V dimmer. TI reference design PMP6023 shows a 25W LED driver with 0-10V dimmer inferface.
David Zhang

0 viny thambi over 9 years ago in reply to David Zhang

Prodigy 40 points

Hi David,

my led works on 230VAC,so using a driver will be difficult to interface.Is there any dimmer module without driver?

0 David Zhang over 9 years ago in reply to viny thambi

TI__Expert 3495 points

Viny:
Sorry, I can not find those dimmers. For programmable dimming, you may have to build extra dimming interface circuit.
David Zhang

Power management

Power management forum

Dimmer circuit for led lamp