A novel high frequency current-driven synchronous rectifier applicable to most switching topologies

Xie, Xiaogao; Liu, Joe Chui Pong; Poon, F.N.K.; Pong, M.H.

doi:10.1109/63.949496

Cited by 100 publications

(10 citation statements)

References 21 publications

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“…The proposed FBPBC is operated in continuous current mode of operation. This enables lower input ripple current compared to other converter configurations [25]- [26]. By operating two boost converters in interleaving mode, boost inductor currents cancel each other, thereby minimizing the input ripple current further.…”

Section: H Input Ripplementioning

confidence: 98%

A Soft-Switched Boost Converter Based LED Driver With Reduced Input Current Ripple

Dasohari,

Vishwanathan,

Porpandiselvi

et al. 2024

IEEE Access

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This paper proposes a soft-switched paralleled boost converter based LED driver for street lighting application. Output of paralleled boost converter (BC) in the form of full-bridge feeds a buck-boost converter (BBC). The outputs of paralleled BC and BBC are added to power LED lamps. The paralleled boost converters help in reducing the source current ripple with small inductors and also can handle large power. Regulation of the load voltage is achieved by BBC which handles small power without significantly affecting the overall efficiency. Soft switching of the devices in boost converters is achieved with a ZVS inductor resulting in high efficiency. PWM based dimming control is employed. The LED driver can be fed from batteries, ultra-capacitor, etc. A prototype of 65 W DC-DC converter for LED lighting is developed. The experimental results are in good agreement with simulation results. The proposed converter offers high efficiency of 93.42%, reduced source current ripple, and dimming control. The efficiency of the proposed converter with SiC MOSFETs is around 95% at all voltage variations. INDEX TERMSSynchronous boost converter; ripple cancellation; synchronous rectification; zero voltage switching; LED lighting; buck-boost converter; lighting control; LED Driver

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Section: H Input Ripplementioning

confidence: 98%

A Soft-Switched Boost Converter Based LED Driver With Reduced Input Current Ripple

Dasohari,

Vishwanathan,

Porpandiselvi

et al. 2024

IEEE Access

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“…A difficulty occurs when voltage variation occurs across the winding due to changes in the converter's input or output voltages. In current-driven SR [17], the MOSFET's drain current is detected through a current transformer (CT), however, this can be physically difficult to implement around high-current conductors. In this article, the SR elements were driven via a transformerisolated control signal to address the problem of a large voltage range which would be present with self-driven SR. Transformer isolation was used to provide noise immunity.…”

Section: Pre-regulatormentioning

confidence: 99%

Cryogenic DC/DC Converter for Superconducting Magnet Application

Elwakeel

Mcneill

Alzola

et al. 2022

IEEE Trans. Appl. Supercond.

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Recent advances in superconductors have led to their increased application in magnets and a requirement to carry ever-larger currents. This article describes the development and implementation of a cryogenic DC/DC converter for supplying a DC excitation current of 500 A for superconducting magnet applications. Practical aspects are addressed and the rationale behind selecting an interleaved forward converter topology is elucidated. Experimental results are given and a ripple content in the load current of less than 5% is estimated.

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“…The second category is based on detecting primary or secondary side currents. A method to directly drive the SR based on the secondary current is proposed in Xie et al (2001). The advantage of the direct driving strategy its simplicity and accuracy, and the strategy can be used in different working modes without additional driving power.…”

Section: Introductionmentioning

confidence: 99%

Synchronous rectification of LLC resonant converters based on resonant inductor voltage

Luo

Quan

et al. 2023

Front. Energy Res.

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Synchronous rectification (SR) technology has been a critical technology for LLC converters to achieve high efficiency and power density. However, conventional SR driving methods face challenges in terms of light-load condition, module size, switching accuracy, and circuit complexity. This paper proposes an SR driving strategy based on resonant inductor voltage (RLV) to address those issues. This RLV-SR driving strategy does not require current sensors and is insensitive to rectifier parasitic parameters. In addition, the RLV-SR driving strategy can be applied in a relatively wide operating frequency range and load conditions. Experimental results based on a 100-W/24-V LLC converter are presented to verify the effectiveness of the proposed RLV-SR driving strategy. Furthermore, the error of turn-on time caused by stray inductance is significantly reduced compared with the conventional VDS-ON sensing method, which improves the power converter’s efficiency.

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A novel high frequency current-driven synchronous rectifier applicable to most switching topologies

Cited by 100 publications

References 21 publications

A Soft-Switched Boost Converter Based LED Driver With Reduced Input Current Ripple

A Soft-Switched Boost Converter Based LED Driver With Reduced Input Current Ripple

Cryogenic DC/DC Converter for Superconducting Magnet Application

Synchronous rectification of LLC resonant converters based on resonant inductor voltage

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