Switching power supply voltage control mode strengths and weaknesses

With the development of current electronic power design, switching power supplies have penetrated into the design of various devices. Engineers are always looking for a control structure that maximizes the efficiency of the switching power supply, but in reality, no control structure is optimal for switching power supplies. The optimal structure of a switching power supply can only be said to be selected according to a specific application. Therefore, it is very necessary to be familiar with the advantages and disadvantages of each method. The following discussion will explain the strengths and weaknesses of the voltage control mode!

Advantages of voltage mode control:

1. Adopt a single feedback loop, so it is easier to design and analyze;

2. A large ramp waveform provides sufficient noise margin for achieving a stable modulation process;

3. A low impedance power output provides better cross regulation for multiple output power supplies.