Switch power source digital controller with digital communication function

Abstract

The invention belongs to the technical field of the digital control, in particular relates to a switch power-source digital controller with digital communication function. A digital signal processor unit of the controller receives the feedback signal transmitted by a sensor, and bidirectinoally transmits the digital signal with a digital communication unit; the serial digital signal is bidirectionally transmitted between the digital communication unit and a superior machine; a supplementary power source supplies the controlling power for the digital signal processor unit and supplies the driving power for a PWM wave driving unit; the digital signal processor unit transmits the PWM wave to the PWM wave driving unit; and the PWM wave driving unit provides the driving signal to a power element that is arranged on a switch power source. The invention has the advantages that the complete-digital control of the switch power source is realized, good control precision of the switch power source is guaranteed, the remote monitoring and controlling of the switch power source are easily performed, and the reliability of the controller is improved.

Description

technical field [0001] The invention belongs to the technical field of digital control, and relates to a switching power supply digital controller, in particular to a switching power supply digital controller with a digital communication function. Background technique [0002] The traditional switching power supply generally adopts the method of analog control. The analog control method has the disadvantages of low precision, easy to produce temperature drift, the need to redesign the hardware for product upgrading, and lack of accurate fault location and alarm functions. In recent years, switching power supply digital controllers using digital chips have appeared. For example, patent CN200410075502.7 discloses a digital control method of switching power supply. The digital control unit in the method includes a digital signal processor, a programmable logic device, a program memory, a random access memory, a watchdog, two crystal oscillators and a module digital converter....

AI Technical Summary

Problems solved by technology

The controller achieves the control effect through the connection of complex digital electronic devices, but this controller does not fully utilize the advantages of the digital control method

First of all, this kind of controller fails to realize accurate fault location and alarm function, and this kind of controller also does not realize digital communication function

Now switching power supply is widely used in various digital systems. If it cannot communicate with other devices, switching power supply will only exist as an isolated individual and cannot be effectively integrated into the entire large system.

Images