LTC3766
Recommended for New Designs
The LTC3766 is a PolyPhase-capable secondary-side controller for synchronous forward converters. When used in conjunction with the LTC3765 active-clamp...
Datasheet
LTC3766 on Analog.com
LTC3765
Recommended for New Designs
The LTC3765 is a start-up controller and gate driver for use in a self-starting secondary-side control forward converter. When combined with the LTC3766...
Datasheet
LTC3765 on Analog.com
I used LTC3766 and LTC3765 to build an isolation power supply, the input is 18V, the output is 15V, 15V has no load. The circuit is very similar with the evaluation board of DC1739B-C and the circuits given on the data sheet of LTC3766, but the output is not right. The 15V output waveform is shown below:
1) Yellow is the 15V output
2). Yellow is the 15V output. Blue is the PT+ of LTC3766.
It seems that the LTC3766 start to work for a short time, then due to some reasons, stop working. The IS+ and IS- of LTC 3766 is shorted on PCB board.
What could be the reason for this?
Your help is very appreciated!
