I use MC34063 as a boost converter I need to convert 24V to 48V 1.5A. This regulator cannot deliver all current without external MOSFET as a result I drive IRF540 by chip to increase its current. I use 24V 10A as a power supply everything is ok and circuit do its operation well I measure that its input current peak is around 7A link below as a online tools is also result same.
In my design unfortunately the power supply is current limited as a result after adding those resistive loads the voltage is drop to 33V instead of 48V. I try to add some capacitors in the input of the circuit (1000uF, 3300uF) the voltage is drop more surprisingly.
Any Idea to reduce peak current that get from the input power supply?
Should I decrease the switching frequency down to 50KHz to ensure that those capacitors have enough time to recharge?