1. TPS2660: Output Reverse Polarity Protection (ORPP) Circuit

2. Schematic Additional components for ORPP D1, D2 - SBR0560S1-7
D3 - BZT52C12S-7-F
Q1 - 2N F

3. Test Results When device powered from a 5V supply
VIN=5V; VOUT connected to +48V source
VIN=5V; VOUT connected to -48V source

4. Test Results
When device is unpowered; Assuming 10k resistance on input side
VOUT connected to -48V source
VOUT connected to +48V source

5. Conclusion
Device performance is evaluated on EVM with the recommend additional circuit components
With the additional circuit, the device is able to block ±48V external supply on output and protects the input side 5V source