A power supply having an overcurrent protection circuit module output power expansion

The present invention provides a power supply having a current protection circuit module output power expansion, by accurately sampled output current of the power module, the flow through each bus current sharing between parallel modules to achieve respective power sharing, the output impedance of the power to solve small load current of the power sharing accuracy differential expansion method, but also solves the problem of the master module is disposed in the specified method to change the main module and the control loop parameters of controller plus method. Compared with several other output expansion techniques, the present invention uses the average flow over current power extension method, the biggest advantage is the high average power accuracy, each power supply module has an automatic overcurrent protection.