We need to build a LLC power supply with variable output voltage and/or current.
The converter has 2 operating modes: Constant voltage, Constant current mode.
We plan to use LCS708 @400W
Our solution is control Feedback voltage through an external device (microcontroller)
We may use digital potentiometers or digital programmable current source through a microcontroller.
The control loop of the power supply is / can be very slow. We do not need fast regulation.
What may be your recommendation?
We also need to paralel (combine the outputs of ) 2 LCS708 to reach 800W. (Each controller has its own current shunt and it is regulated (by regulating the resonant tank frequency) seperately. A host controller combines the total current to the set point. by communicating the slaves) Would you recommend it? Any issues we should take care of?