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FLEXIBLE LOOP COMPENSATION FOR DC-DC CONVERTER MODULES

IP.com Disclosure Number: IPCOM000247170D
Publication Date: 2016-Aug-11
Document File: 5 page(s) / 220K

Publishing Venue

The IP.com Prior Art Database

Related People

Kan Seto: AUTHOR [+5]

Abstract

In DC-DC power converter modules, certain resistors and capacitors used for adjusting the compensation can be supplied by the user instead of being a fixed value internal to the module. This enables performance optimization for different usage needs. The modules can be used in a variety of different applications and a user can fine tune the behavior of the module for each specific application for superior performance.

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FLEXIBLE LOOP COMPENSATION FOR DC-DC CONVERTER MODULES

AUTHORS:

   Kan Seto Shobhana Punjabi Jessica Kiefer

  Yang Li Michael Grant

CISCO SYSTEMS, INC.

ABSTRACT

    In DC-DC power converter modules, certain resistors and capacitors used for adjusting the compensation can be supplied by the user instead of being a fixed value internal to the module. This enables performance optimization for different usage needs. The modules can be used in a variety of different applications and a user can fine tune the behavior of the module for each specific application for superior performance.

DETAILED DESCRIPTION

     Power supply modules integrate major power supply components into a single device to enable straightforward implementation. The trade-off with this level of integration is less power supply customization options for the end user. However, due to the unique demands of each power supply application, there is a need for compensation customization options to guarantee performance in a wide variety of cases.

    FIG. 1 below shows a generic type 3 compensation. All of the resistors and capacitors below can be adjusted to shape the transfer function from V1 to V2.

Copyright 2016 Cisco Systems, Inc.

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FIG. 1

    When applied to a voltage converter, the configuration resembles the circuit shown in FIG. 2 below. In this case, Vout is the output voltage produced by the power supply, and Ve is the error signal at the output of the compensation network. R4 and Vref are added to set the DC level of the output voltage; R1 and R4 form a divider from the output voltage which is compared against Vref to set the DC level of the output voltage. The additions made to this diagram, compared to the first one described, do not affect the compensation network.

FIG. 2

Copyright 2016 Cisco Systems, Inc.

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    The components described above are integrated within a module, with the exception of R4 which inherently must be accessible by the user in order to set th...