dttworld
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Activity overview
Latest activity by dttworld-
dttworld commented,
I believe I understand my problem now. The backlight converter on the eval board is a boost converter designed to drive a series LED backlight. I actually need a buck converter designed to drive th...
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dttworld commented,
So I swapped out the backlight IC with one bought from Mouser. Unfortunately, the PWM pin tied to gnd still doesn't turn off the backlight current. For this test I am actually lighting up 5 LEDs in...
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dttworld commented,
Thanks for running the test on your end.I am using the eval board for just the backlight function set to 90mA. I should be receiving my parts from Mouser on Wednesday and will provide an update a...
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dttworld commented,
Hi -I am connecting to the display through a FPC breakout board. The backlight connections have been double checked and things are wired properly (including multiple cathode connections). The bac...
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dttworld commented,
Hi -I am trying to control the backlight current using the PWM signal. Right now I am using the NHD-TFT40 board to supply 90mA to the backlight off an NHD-1.8-128160EF-CSXN# display. I don't unders...
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dttworld created a post,
NHD-TFT40 PWM pin
Hi -I have 2 "NHD-TFT40" boards that do the same strange thing. When the PWM pin is connected to ground the display current does not shut off. Can someone at Newhaven replicate this test?Thank you