I am dealing with the following problem,
I want to control the output current and voltage of a synchronous buck converter during the output load (resistor) step change. Suppose we set the output reference current to a specific value. A step change in the load due to capacitor parallel to it, will result in a current spike (the voltage across the cap stays the same when the resistor value is changed (so the current spikes)). In my design i try to match Vout and Iout with Iout = f(Vout) according to a function f.
To be more specific, when a load R1 is connected to the buck's output the Vout1 and Iout1 will get their values such that Vout1/Iout1 = R1. If I change the R1 to R2 (suppose R2 > R1) the new values Vout2, Iout2 will set accordingly.
There is a also a need to control the transient response of Iout and Vout during a load change, so they will follow the function f from a steady state point at R1, to the R2. So my question is,
Is it possible to develop a control strategy to control these current and voltage transient responses ?? (I try to change the output LC filter to something like LCL, and working on the stability and the control design but only VOID is what I see)