Hello, I'm looking for a switching controller IC to make a high power power supply. I've been looking but I couldn't find what I'm looking for.
I need to design a power supply (switching for max. efficiency) with a voltage control pin that allow me to change the output voltage.
I need it also to have a current limiting functionality (probably set by a resistor). When the output current is under 20A the supply should behave as a constant voltage source (with adjustable output). When the maximum of 20A is reached the supply must behave as a constant current source and drop the output voltage to maintain 20A.
Input-Output insulation is not needed
This are some specs for my design:
Vin: 20V DC
Vout: from as low as possible to as close to Vin as possible
Max power: 400W
Max current: 20A
Efficiency: > 90%
I was wondering if there is any IC that can perform all of the above, the idea is to use the minimum amount of components.
If there isn't any IC capable of doing all that, whats the best IC (or topology) that allows good feedback manipulation (through opamps) to give it output voltage control and current limiting features?
Thank you for your help!
I need to design a power supply (switching for max. efficiency) with a voltage control pin that allow me to change the output voltage.
I need it also to have a current limiting functionality (probably set by a resistor). When the output current is under 20A the supply should behave as a constant voltage source (with adjustable output). When the maximum of 20A is reached the supply must behave as a constant current source and drop the output voltage to maintain 20A.
Input-Output insulation is not needed
This are some specs for my design:
Vin: 20V DC
Vout: from as low as possible to as close to Vin as possible
Max power: 400W
Max current: 20A
Efficiency: > 90%
I was wondering if there is any IC that can perform all of the above, the idea is to use the minimum amount of components.
If there isn't any IC capable of doing all that, whats the best IC (or topology) that allows good feedback manipulation (through opamps) to give it output voltage control and current limiting features?
Thank you for your help!