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Primary-Side Start-Up Method And Circuit Arrangement For A Series-Parallel Resonant Power Converter

A technology of power converter and resonant circuit, which is applied in the conversion device of output power, conversion of DC power input to DC power output, high-efficiency power electronic conversion, etc., can solve the problems of increasing the cost of power converter and transportation scheduling, etc.

Active Publication Date: 2018-02-02
MICROCHIP TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This unique circuitry may require custom integrated circuits and / or proprietary designs, which can increase the cost and shipping schedule of such power converters

Method used

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  • Primary-Side Start-Up Method And Circuit Arrangement For A Series-Parallel Resonant Power Converter
  • Primary-Side Start-Up Method And Circuit Arrangement For A Series-Parallel Resonant Power Converter
  • Primary-Side Start-Up Method And Circuit Arrangement For A Series-Parallel Resonant Power Converter

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Embodiment Construction

[0022] According to various embodiments of the present invention, a series-parallel resonant power converter may include a primary-side start-up controller and a secondary-side controller, wherein when power (voltage) is first applied to the When on the primary side, the primary side enables the controller to send power to the secondary side controller. The primary side start-up controller may use an open loop start-up technique to start up the series-parallel resonant power converter, wherein when the secondary side closed-loop controller becomes energized and starts, the secondary side closed-loop control to take over the linear closed-loop control of the series-parallel resonant power converter.

[0023] This provides a low-cost integrated circuit (IC) solution for starting DC-to-DC and AC-to-DC series-parallel resonant power converters using conventional means on the primary side that does not duplicate the resources of the secondary-side controller and minimize discrete ...

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Abstract

A series-parallel resonant power converter comprises a primary-side start-up controller and a secondary-side controller, wherein the primary-side start-up controller sends power to the secondary-sidecontroller when power (voltage) is first applied to the series-parallel resonant power converter. The start-up controller starts up the series-parallel resonant power converter using an open-loop start-up technique wherein the secondary-side closed-loop controller takes over control of the series-parallel resonant power converter once it becomes powered and activated. During light-load or no loadconditions, the secondary-side controller sends an off resonance higher frequency or a standby code inhibit (disable) command to the start-up controller. When power needs to be sent to the secondary side of the transformer to charge a secondary side capacitor, the secondary-side controller may send an enable code command to the start-up controller where it is detect to allow the start-up controller to operate in a normal fashion with the secondary side controller.

Description

[0001] Related patent applications [0002] This application claims priority to commonly-owned U.S. Provisional Patent Application No. 62 / 169,382, filed June 1, 2015; and related to U.S. Patent Application No. 14 / 945,729, filed November 19, 2015; and U.S. Provisional Patent Application No. 62 / 169,415, filed June 1, 2015; in its entirety by Thomas Quigley, all of which are hereby incorporated by reference for all purposes middle. technical field [0003] The present invention relates to power converters, and in particular, to start-up controller methods and apparatus for DC-to-DC and AC-to-DC series-parallel resonant power converters. Background technique [0004] A series-parallel resonant power converter is a converter in which the load can be connected in series with the resonant "tank" circuit or in parallel with one of the tank circuit components. A series-parallel power converter comprising two inductors, one of which is the magnetizing inductance of the transformer,...

Claims

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Application Information

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IPC IPC(8): H02M1/36H02M3/335H02M3/337H02M1/32
CPCH02M1/32H02M1/36H02M3/33507H02M3/33592H02M1/0035H02M1/0006H02M1/0009H02M1/0058H02M3/01H02M3/33571Y02B70/10H02M3/33569H02M3/337
Inventor T·奎格利
Owner MICROCHIP TECH INC