Search results for "synchronous boost converter"

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Predictive dead time controller for GaN-based boost converters

2017

A dynamic dead time controller is presented, specifically intended to operate in synchronous boost converters based on GaN field-effect transistor switches. These transistors have a reduced stored charge with respect to silicon metal–oxide–semiconductor field-effect transistors with similar breakdown voltage and series resistance, and can operate at higher frequencies with reduced switching losses. On the other hand, the voltage drop in reverse conduction is typically more than doubled with respect to silicon devices resulting in relevant power losses during the free-wheeling phases. Therefore, dynamic control of dead time can be profitably applied even in converters operating in the tens o…

Materials sciencepredictive control; field effect transistor switches; switching convertors; transient response; predictive dead time controller; dynamic dead time controller; synchronous boost converters; power losses; transient response020209 energypredictive dead time controller02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciSettore ING-INF/01 - Elettronicalaw.inventiondynamic dead time controllerlawControl theorypower losse0202 electrical engineering electronic engineering information engineeringBreakdown voltageElectrical and Electronic EngineeringPredictive controlsynchronous boost converterfield effect transistor switcheswitching convertor020208 electrical & electronic engineeringTransistorConvertersDead timetransient responseBoost converterVoltage dropVoltage
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Min-Type Control Strategy of a DC-DC Synchronous Boost Converter

2019

International audience; This paper presents the analysis and design of a min-type strategy to control a synchronous boost converter in continuous conduction mode. The strategy uses a nonlinear switching surface to establish the change of topology in the converter and is analyzed by means of a sliding-mode control approach. Subsequently, the min-type strategy is modified by a hybrid control formulation, which introduces a hysteresis width and a dwell-time to obtain a finite switching frequency in the start-up and steady-state respectively. The hybrid control formulation is implemented digitally by means of a microprocessor which processes the samples of inductor current and capacitor voltage…

min-type controlstart-upComputer scienceTopology (electrical circuits)02 engineering and technologyInductorSliding mode controllaw.inventionSettore ING-INF/04 - AutomaticaControl theorylaw[INFO.INFO-AU]Computer Science [cs]/Automatic Control Engineering0202 electrical engineering electronic engineering information engineeringElectrical and Electronic EngineeringIndex Terms-Synchronous boost converterSynchronous boost converter020208 electrical & electronic engineeringhybrid controlPower (physics)HysteresisMicroprocessorNonlinear systemsliding-mode controlControl and Systems EngineeringCapacitor voltagesliding-mode control (SMC)Boost converterTransient (oscillation)
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