Tps43060

michael jay

Other Parts Discussed in Thread: TPS43060

Is it possible to use pwm dimming on a tps43060. If it isn't can someone suggest a device that does, I need to drive 6 of 10v by 1amp high power LEDs from a 12v supply, I've been using boost to 30v at 2amps I dont mind splitting them into 2 or possibly 3 banks if necessary.

Regards

Mike

over 12 years ago

0 Anthony F over 12 years ago

TI__Mastermind 35165 points

Hi Michael,

This could be done by toggling the EN pin of the TPS43060. The frequency should kept low near 100Hz to avoid any issues with dimming linearity due to 125µs delay from EN high to switching. The SS cap should also be kept small to reduce the time it takes to charge up.

The following app note in section 3.2 discusses some methods which also apply to the TPS43060.

http://www.ti.com/lit/an/slva374/slva374.pdf

Best Regards,
Anthony

Power management

Power management forum

Tps43060