My customer has designed the power supply applying LM22678-Q1.
LM22678-Q1 was broken due to Output short to GND wihin quite short time
(It is depended on miss-operation by the customer).
Vin = 18V & Vout = 4 ~ 17V(adjustable using variable resistor)
Datasheet 12 page defines SOA, so it looks inside of SOA.
1) I wonder LM22678-Q1 has any kind of weakness against Output short to GND?
2) Please let me know if there is other suitable device.