• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 356 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Configure TPS61196 for any channel number and startup issue

Di Wang
Expert 1740 points
Other Parts Discussed in Thread: TPS61196

Hi,

I may use TPS61196 for 1 to 6 channels, so I short the PWM pins of the unused channels to GND. I don't pull IFB low through a 27kohm. Does tps61196 still report an open LED fault to pull FAULT pin high?

In my  first step test, I only use one channel by this configuration. When I power on by Vin, I found LED was lighted for a short time(~100ms), then off with boost stopped working. It happened either with 18 LEDs string or 36 LEDs string. Could you recommend how to locate the root cause?Is layout related to this?

The configuration of IFBV ISET FBP is same to EVM with other configuration is similar to EVM.

Thanks.