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TPS61158: Lower PWM frequency then recommended range 20k~100kHz

Part Number: TPS61158

Hi Team,

My customer wants to use 10kHz PWM frequency for dimming if possible. 
We are understanding our recommendation is 20k~100kHz for CTRL control though, what side effect will be expected if they use the lower frequency for CTRL control?

In my customer's evaluation, it looks switching cycle was skipped when CTRL rising edge in 10kHz PWM duty 20% case.


Takashi Onawa