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Old 12-15-2024, 06:45 PM   #232
Extricated
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Extricated began at the beginning.
 
Posts: 19
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Join Date: Feb 2019
Device: Kindle Paperwhite 4 (2018)
Quote:
Originally Posted by Renate View Post
Everything in the world uses a TI LM3630A for backlight/frontlight. It does a fine job providing boost voltage for two chains of LEDs and allows exponential control of current. It also has a PWM input pin. But why would anyone ever use that? You'd have to waste a PWM output on a Timer/Counter for no purpose.

I don't have a Eink phone or any photo sensor to hand. I also don't have anything open right now to scope out the boost voltage.
I have an Inkpalm on hand - is there any way I can check if it uses PWM or not?

I thought I saw some slight flicker the other night, but my eyes were incredibly tired so I'm wondering if it was me or the device.
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