SOLVED: Voltage regulator pads were backwards on PCB.
I've been working on making a 5V power supply for an Axiomtek PICO831 motherboard, and I have decided to use the Texas Instruments LM2576SX-
5.0 switching voltage regulator. I then built the following circuit based off of the recommended circuit in the datasheet:
Where U1 is the switching voltage regulator and all of the parts meet the specifications put forward in the datasheet. I also added an additional low pass filter.
The issue I am having is that when I hook it up to a 9.6 V LiFePO4 battery with no load it immediately causes C2 to fail and become a short. This in turn triggers the short circuit protection on the battery and cuts power to the circuit. I have already fried two 100 uF capacitors and have no idea what is wrong. This is particularly perplexing considering it is exactly what is recommended in the datasheet.
Any help is greatly appreciated!
I've been working on making a 5V power supply for an Axiomtek PICO831 motherboard, and I have decided to use the Texas Instruments LM2576SX-
5.0 switching voltage regulator. I then built the following circuit based off of the recommended circuit in the datasheet:
Where U1 is the switching voltage regulator and all of the parts meet the specifications put forward in the datasheet. I also added an additional low pass filter.
The issue I am having is that when I hook it up to a 9.6 V LiFePO4 battery with no load it immediately causes C2 to fail and become a short. This in turn triggers the short circuit protection on the battery and cuts power to the circuit. I have already fried two 100 uF capacitors and have no idea what is wrong. This is particularly perplexing considering it is exactly what is recommended in the datasheet.
Any help is greatly appreciated!
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