CONTROL APPARATUS APPLIED TO DIGITAL POWER SUPPLY DEVICE, AND DIGITAL POWER SUPPLY DEVICE

摘要

The present invention discloses a control apparatus applied to a digital power supply device, and a digital power supply device, and pertains to the digital power field. The control apparatus includes: an operational amplifier, an analog to digital converter, a feedback digital filter, a digital pulse-width modulator, a power-level circuit, a feedforward digital filter, and a feedback network. A feedforward function is achieved by configuring a feedforward digital filter, which reduces the number of tables that are used to implement a reciprocal curve, and avoids problems of a long operational delay, a huge resource waste, and a poor feedforward effect.

主权项

1. A control apparatus applied to a digital power supply device, comprising:
an operational amplifier; an analog to digital converter; a feedback digital filter; a digital pulse-width modulator; a power-level circuit; a feedforward digital filter; and a feedback network, wherein: an input end of the operational amplifier is a reference voltage input end, and an output end of the operational amplifier is connected to an input end of the analog to digital converter; an output end of the analog to digital converter is connected to an input end of the feedback digital filter; an output end of the feedback digital filter is connected to an input end of the digital pulse-width modulator; an output end of the digital pulse-width modulator is connected to an input end of the power-level circuit; a first output end of the power-level circuit is connected back to another input end of the operational amplifier through the feedback network, and a second output end of the power-level circuit generates an output directly; and an input end of the feedforward digital filter is a voltage input end, and an output end of the feedforward digital filter is connected to the input end of the digital pulse-width modulator.