LP8866-Q1: EMI

Bruce Yang

Part Number: LP8866-Q1

Tool/software:

Hello, if the output pins OUT1~OUT6 of LP8866 are connected in parallel with 1UF capacitors to the ground, will the normal dimming function be affected? Such as response speed

11 months ago

0 Bruce Yang 11 months ago

Prodigy 180 points

PWM is 150Hz

0 Zhiqian Wu 11 months ago

TI__Mastermind 31365 points

Hi, Bruce

we recommend to use 1nF cap for each OUT pin.

0 Bruce Yang 11 months ago in reply to Zhiqian Wu

Prodigy 180 points

yes I know，but We meet EMI problems, and try 1UF can be used to solve them, but I don't know whether it will affect dimming. Do you have similar experience

0 Zhiqian Wu 11 months ago in reply to Bruce Yang

TI__Mastermind 31365 points

Hi, Bruce

Maybe you could share your EMI result or critical frequency and I can share some ideas, for the 1uF in OUT pin, it is not recommended.

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LP8866-Q1: EMI