TPS65142: TPS65142 dimming resolution

Mason Liu

Part Number: TPS65142

Hi,

What is TPS65142 dimming resolution? i didn't find resolution in the datasheet, how to calculate it? For example, if the dimming PWM frequency is 200Hz and 25kHz, what is the corresponding dimming resolution?

Thanks.

Best regards

Mason

over 4 years ago

0 Aaron Goodson over 4 years ago

TI__Expert 6330 points

HI,

I have notified our expert regarding this topic. Please expect a response by 9/30/19.

Thanks,

Aaron

0 Liaqat Khan over 4 years ago

TI__Mastermind 18550 points

Hi Mason,

TPS65142 can achieve dimming ratio of up to 1000:1, 10 bit dimming resolution at 100Hz input PWM frequency. As the input PWM frequency increase, dimming, ratio will decrease. Section 7.3.12 in the datasheet describes what typical dimming ratios are achievable at a some of the given input PWM frequency.

Kind Regards,

Liaqat

Power management

Power management forum

TPS65142: TPS65142 dimming resolution