Other Parts Discussed in Thread: TIDA-01457
Hi
I ran into an issues with TPS82130 used as in inverting configuration in our designed boards as suggested in TIDA-01457. Please see the below schematic. I am using 12V as Vin. we designed 3 protoype boards
1. On one board, I measured the Enable signal @ 12V, yet I don't see any output voltage of 5.5V. I measure it as 0.5V. The voltage at Vfb is measured as 0.4V. I should be measuring the reference voltage of 0.8V correct.
I am not sure what the issue is, is the part not working ?
2. One board works perfectly fine, no issues when we are powering up using a DC-DC power supply for 12V.
3. The other board was working fine, until we plugged into a chassis with 12V power supply. -Ve voltage regulator (TPS82130) input and outputs are shorted, likely toasted. I am not sure of the cause, as the 12V DC from chassis is pretty stable.
Can some one please provide me insights on whats going on with TPS82130 ..
Regards
Venu