Feedforward circuit for DC-to-DC converters with digital voltage control loop

Abstract

The disclosure relates to a feedforward circuit for DC-to-DC converters with a digital voltage control loop. Methods, devices, and systems are disclosed for receiving a first clock signal; receiving a digital duty cycle value; using the first clock signal and digital duty cycle value to generate a digital pulse width modulation (DPWM) signal having a plurality of discrete steps to control a switch of a switched-mode power supply; and using a voltage control circuit to modify a duration of each of the plurality of discrete steps of the DPWM signal, wherein the voltage control circuit is configured to receive an analog voltage input.

Description

technical field [0001] The present disclosure relates to power converters, and in particular, to techniques for controlling switches of switched mode power supplies. Background technique [0002] Some circuits may use a power converter that receives a power input from a power supply and converts (e.g., increases or decreases) the power input to a voltage or current level that is different (e.g., regulated) from that of the power input. Flat power output. The converter delivers a power output to the filter for powering a component, circuit, or other electrical device. Switch-based power converters can use half-bridge circuits and signal modulation techniques to regulate the current or voltage level of the power output. In some examples, the power converter may use an analog-to-digital converter (ADC) to improve accuracy and control of the voltage or current level of the power output. These ADCs for improved accuracy and control of the voltage or current level of the power ...

AI Technical Summary

Problems solved by technology

These ADCs for improved accuracy and control of the voltage or current level of the power output can reduce the overall efficiency of the power converter and / or increase the physical size, complexity and / or cost of the power converter

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