We have applied for UL certification for our LED drivers based on Link Switch devices using the reference designs RDR195, RDR 193 and DER286. UL Engineer insisted the following component failure tests on the LNK 409 , LNK407 and LNK405 ICs . Kindly let me know whether the below tests are suggested or recommended. If these tests are not recommended please explain so that we can convince UL people.
1. 1. Short the pins 7 and 5 during normal operation of the driver.
2. 2. Short the pins 2 and 3 during normal operation of the driver.
3. 3. Short the pins 1 and 4 during normal operation of the driver.
Please let me know what will happen if the above SC tests be conducted. Whether IC will survive the above tests?
Is it possible to measure the voltages between pin 1 and pin 3 of the LNK IC? Waiting for your prompt reply.