Is there a relatively simple way to increase the load capacity of a integrated SMPS/MOSFET controller by adding a parallel device?
This is the device: Fairchild FSCQ1265RT
The method has been successfully used: MOSFET-Assisted Soft-Switching of IGBTs
However, a potential problem is that since the main device is integrated, there is no way to connect to the gate signal. The logic to turn the assisting device on and off would have to come from some kind of sensing circuit, thus introducing possibly undesirable delays.
The required addition in switching current is about 3A, across a frequency range of 24kHz-~100kHz.. The least amount of additional components, besides the helper device, is desirable. Essentially, the capacity of the FSCQ1565RP device (which has been discontinued) is required.