Tool/software:
Hi,
I have used LM5034 for 250W (28VIN and 50VOUT) conversion module.
Inorder to increase efficiency, I have to reduce the switching losses of the primary N-CH MOSFET.
To do so, reduction in rise and fall times is indeed. The rise and fall times of the MOSFET (BSC220N20NSFDATMA1), I have used is attached.
The same for the LM5034 gate drivers are also attached.
But, the observed rise and fall times are around 50ns. (Refer below waveform)
Note: The gate series resistance of this MOSFET is 0 ohms (20 mohms).
The power loss for the MOSFETs are given below.
We have used planar transformer. So, the transformer can't be changed or altered. The turns ratio if 1:5.3 ( VIN range - 16V to 36V).
Intra winding structure has been followed.
Kindly give some tips to reduce power loss.
