The FYP is “Average Current Mode Control of Switching Power Supplies” which is further dived in two parts;

Current Mode Control (CMC)

Voltage Mode Control (VMC)

        Now the implementation of the CMC is in SPS (Switching power supplies), that's since the inductor current control peak. CMC is often raising the few problems like the immunity of noise, compensation of slope, errors in peak to average current. Now by using the ACMC eliminate these problems, and also used for the currents control of the inductor. (Dixon, 1999)

There are two loops in the CMC which is shown in the below figure 1;

Figure : Peak CMC circuit an waveform

        By the comparing upslope of the inductor current, the peak method for the functions of the inductor current, where an outer loop sets the current program level. When an instantaneous current reached the desired level, comparator turns the power switch off. Ramp current is tiny which is compared at the programming level when VINis low. Into the Control circuit, the friction of the volt coupled is caused, by turn off immediately; the operating mode by the greater ripple obtained the result of the sub harmonic. For the successful operation, the circuit layout and the bypassing are critically important (Chunxiao & Lclunun, 1999).

        SPS is hidden by the inner current loop that simplifies a control loop of an external voltage and enhances the performance of the power supply in various methods, involving the improved dynamics. To control the average inductor current of the state space is the purpose of the inner. If the ripple current of the inductor is small, then the control of inductor current peak is equivalent for the current power of the average inductor. Using the Buck topology in the SPS where the inductor is used as an output.

References of  Average Current Mode Control of Switching Power Supplies