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Method and apparatus for controller optimization of switching voltage regulators

A technology of regulators and controllers, applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., can solve problems such as unsatisfactory regulator response

Active Publication Date: 2018-06-22
INFINEON TECH AUSTRIA AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, peaks or protrusions within the closed-loop impedance curve are undesirable and can lead to a more suboptimal regulator response

Method used

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  • Method and apparatus for controller optimization of switching voltage regulators
  • Method and apparatus for controller optimization of switching voltage regulators
  • Method and apparatus for controller optimization of switching voltage regulators

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Embodiment Construction

[0016] Embodiments described herein optimize the control loop coefficients of a digital voltage regulator controller to meet the requirements of the voltage regulator system over a wide range of operating conditions, while also flattening the output impedance response. Control loop coefficients may be optimized by determining initial settings of coefficients that meet gain and phase margin targets of the voltage regulator controller as a function of various system parameters for the voltage regulator controller. Peaks (protrusions) in the output impedance response are identified in the frequency range of interest, and one or more of the control loop coefficients are re-determined such that the peaks in the output impedance response are reduced. Embodiments described herein provide an iterative approach for aggressive control loop implementations where phase margin affects peaking and control loop coefficients are optimized subject to a minimum peaking condition. For this purpo...

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Abstract

Control loop coefficients for a digital voltage regulator controller are determined by determining PID (proportional-integral-derivative) coefficients that satisfy gain and phase margin targets for a digital voltage regulator controller, as a function of a plurality of system parameters for the digital voltage regulator controller, and re-determining one or more of the PID coefficients to flatten an output impedance response of the digital voltage regulator controller for frequencies below a bandwidth of the digital voltage regulator controller.

Description

technical field [0001] The present application relates to switching voltage regulators, and more particularly to improving transient response by optimizing the voltage loop and current loop responses to flatten the output impedance response of the switching voltage regulator. Background technique [0002] Switching voltage regulators, such as DC-DC regulators, are widely used in modern electronic systems for various applications, such as computing for telecommunications (servers and mobile telephone) and POL (point-of-load system). Widely accepted topologies for switching voltage regulators include buck, boost, buck-boost, forward, flyback, half-bridge, full-bridge, and SEPIC topologies. Multiphase buck converters are particularly well suited for delivering the high currents required by high-performance integrated circuits such as microprocessors, graphics processors, and network processors at low voltages. A buck converter is implemented using active components, such as a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/00
CPCH02M3/157
Inventor A·巴巴扎德赫B·唐
Owner INFINEON TECH AUSTRIA AG