A Digitally Controlled Dual Output Stage Buck Converter with Transient Suppression
To support the increasingly demanding requirements for power conversion units, a digitally controlled dual output stage buck converter is designed. The system consists of a dual output stage, which includes an auxiliary buck output stage connected in parallel with a main output stage. The auxiliar...
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ndltd-LACETR-oai-collectionscanada.gc.ca-OTU.1807-189352013-04-20T05:21:22ZA Digitally Controlled Dual Output Stage Buck Converter with Transient SuppressionNg, Kendy Chun-WaDC-DC ConvertersTransient ResponseDigital Control0544To support the increasingly demanding requirements for power conversion units, a digitally controlled dual output stage buck converter is designed. The system consists of a dual output stage, which includes an auxiliary buck output stage connected in parallel with a main output stage. The auxiliary output stage is only active during load transient to suppress the output voltage variation. A digital controller is designed to control both stages with a linear/nonlinear control scheme. Nonlinear control is applied during load transient based on the capacitor charge balance principle; whereas linear PID control governs the steady state operation. The design is verified with simulation and experimentally with discrete components. The controller is realized with a FPGA with preset output stage parameters. The experimental result shows a 60% reduction of output voltage variation for a heavy-to-light load transient.Ng, Wai Tung2009-112010-02-15T22:14:50ZNO_RESTRICTION2010-02-15T22:14:50Z2010-02-15T22:14:50ZThesishttp://hdl.handle.net/1807/18935en_ca |
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en_ca |
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NDLTD |
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DC-DC Converters Transient Response Digital Control 0544 |
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DC-DC Converters Transient Response Digital Control 0544 Ng, Kendy Chun-Wa A Digitally Controlled Dual Output Stage Buck Converter with Transient Suppression |
description |
To support the increasingly demanding requirements for power conversion units, a digitally controlled dual output stage buck converter is designed. The system consists of a dual output stage, which includes an auxiliary buck output stage connected in parallel with a main output stage. The auxiliary output stage is only active during load transient to suppress the output voltage variation. A digital controller is designed to control both stages with a linear/nonlinear control scheme. Nonlinear control is applied during load transient based on the capacitor charge balance principle; whereas linear PID control governs the steady state operation. The design is verified with simulation and experimentally with discrete components. The controller is realized with a FPGA with preset output stage parameters. The experimental result shows a 60% reduction of output voltage variation for a heavy-to-light load transient. |
author2 |
Ng, Wai Tung |
author_facet |
Ng, Wai Tung Ng, Kendy Chun-Wa |
author |
Ng, Kendy Chun-Wa |
author_sort |
Ng, Kendy Chun-Wa |
title |
A Digitally Controlled Dual Output Stage Buck Converter with Transient Suppression |
title_short |
A Digitally Controlled Dual Output Stage Buck Converter with Transient Suppression |
title_full |
A Digitally Controlled Dual Output Stage Buck Converter with Transient Suppression |
title_fullStr |
A Digitally Controlled Dual Output Stage Buck Converter with Transient Suppression |
title_full_unstemmed |
A Digitally Controlled Dual Output Stage Buck Converter with Transient Suppression |
title_sort |
digitally controlled dual output stage buck converter with transient suppression |
publishDate |
2009 |
url |
http://hdl.handle.net/1807/18935 |
work_keys_str_mv |
AT ngkendychunwa adigitallycontrolleddualoutputstagebuckconverterwithtransientsuppression AT ngkendychunwa digitallycontrolleddualoutputstagebuckconverterwithtransientsuppression |
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1716583384244813824 |