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LP8868X-Q1: LED Driver PWM Issues

Part Number: LP8868X-Q1

Tool/software:

HI,

Attached is my design.

Issue is when i increase PWM the inductor ripple increases, and the input voltage drops below 4.6V.

Using in PWM Mode

Am suspecting

1. RCOMP,COMP,RDAMP Values

2.RTH

3.INput capacitance

Inductor calculations are fine i my belief

can TI share an calculation tool