Hello,
My customer has a question for TPS61500.
They want to use TPS61500 in different 2 cases, 100 ohm sensor resistor(R3) with 2mA case and 1 ohm with 200m case.
And they want to use PWM dimming with 1%~100%.
They tested both 2mA and 200mA cases with 100% duty with the EVM and both cases worked well.
Next, they tested 1% PWM dimming.
The datasheet says that the min PWM frequency is 200Hz.
But due to their test environment, they could only test with 100Hz PWM frequency.
And they could see a flicker in both 200mA and 2mA cases, which uses 100Hz and 1% PWM.
I know 100Hz PWM is out of the specification range, 200~1000Hz.
Their question is that if the PWM frequency is 200Hz instead of 100Hz, will it work for both 2mA and 200mA cases with 1% duty without a flicker?
Especially, 2mA case, is there any limitation for minimum current?
Regards,
Oba
