I'm developing a LED driver running at high currents using the LT3743. I have build the circuit following the reference circuit given in page 23 of the datasheet. I have changed the components on the board, according to the given calculations, to increase the maximum output to 25A.
When I'm driving the board the maximum output is however limited to 14A. I have tested the board by applying a constant signal to the PWM pin and slowly increasing the voltage on the CTRL_H pin to 1.5 Volts.
The circuit for the LED driver is added below.
I have tried changing the switching frequency of the chip, but this did not change the maximum output.
Any help in solving this problem is appreciated.
Thanks in advance.