DIGITAL CURRENT EQUALIZATION METHOD AND POWER SUPPLY MODULE

摘要

A digital current equalization method includes: acquiring a current value from a counter preset value loading module in each synchronization period; generating a continuous variable frequency pulse according to the current value, and receiving a synchronization signal transmitted by a phase inverter connected to the PFM generator; transmitting, according to the synchronization signal, the continuous variable frequency pulse to the digital current equalization bus through an OC gate of a triode connected to the PFM generator; counting a frequency of the continuous variable frequency pulse on the digital current equalization bus, where an acquired frequency count value is used to represent a current magnitude of a power supply module, which currently outputs a greatest current, of the foregoing power supply module and a power supply module connected in parallel with the foregoing power supply module to accordingly adjust the output current of the foregoing power supply module.

主权项

1. A digital current equalization method, comprising:
acquiring a current value from a counter preset value loading module in each synchronization period, wherein the current value is a value of output current magnitude of a power supply module in which the counter preset value loading module is located, and is used to represent a modulation frequency of a pulse frequency modulation (PFM) generator on the power supply module; and the synchronization period is a synchronization period of the PFM generator on the power supply module and a PFM generator on a power supply module connected in parallel to the power supply module; generating a continuous variable frequency pulse according to the current value, and receiving a synchronization signal transmitted by a phase inverter connected to the PFM generator, wherein the synchronization signal is information about a synchronous updating time acquired by the phase inverter from a digital current equalization bus connected to the power supply module; transmitting, according to the synchronization signal, the continuous variable frequency pulse to the digital current equalization bus through an open-collector gate of a triode connected to the PFM generator; counting a frequency of the continuous variable frequency pulse on the digital current equalization bus, wherein an obtained frequency count value is used to represent current magnitude of a power supply module that currently outputs a greatest current in the power supply module and the power supply module connected in parallel to the power supply module; and adjusting the output current of the power supply module according to the current magnitude of the power supply module that currently outputs the greatest current.