Hello,
I try to design a boost controller, supplied from a 4S Li-Ion battery to produce an output of 50V and 4A (200W max.). A buffer is already included in the values.
I use the LTspice model to simulate my calculations. At a "full" battery (16,8V) the design works fine.
But when I reduce the supply voltage, the regulator no longer reaches the voltage of 50V.
At an input voltage of 16.8V, the regulator supplies 50V and 4A.
With an input voltage of less than 16V, the regulator no longer reaches the minimum voltage of 50V at 4A.
At 12V I have to reduce the load to max. 2.5A to reach the 50V.
I uploaded the LTspice file at my google drive:
My aim is for the regulator to deliver full power over the entire input voltage of 12 - 16.8V. Can someone help me in my design?
Best regards
Bruno
