Comparison between Control Methods of Active Clamp Flyback for Adaptor Application

Song, Haibin; Xu, Daofei; Zhang, Alpha J.

doi:10.1109/peac.2018.8590438

Cited by 3 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The detailed comparison shown in TABLE IV proves the effectiveness of the optimal design procedure given in Chapter III. The peak efficiency of converters built in [35] and [36] is 96.4% and 96.25%, respectively. However, these converters are operating at a low frequency around 200 kHz.…”

Section: Experiments Verificationmentioning

confidence: 99%

Analysis and Optimal Design of High-Frequency and High-Efficiency Asymmetrical Half-Bridge Flyback Converters

Ouyang

Andersen

2020

IEEE Trans. Ind. Electron.

View full text Add to dashboard Cite

The asymmetrical half-bridge (AHB) flyback converter is capable to achieve zero voltage switching (ZVS) and has lower voltage stress compared to the active clamp flyback converter (ACF). This topology gives much margin for components selection and transformer turns ratio design. It is well adapted to voltage step-down applications. However, the optimal design for AHB flyback converter taking current dip effect causing by components parasitic capacitances, and each component effect to power loss into consideration has never been explored. This paper gives detailed operation and mathematical analyses of this effect. The optimal design procedure with the consideration of each circuit parameter is presented in this paper. The transformer benefits low power loss from interleaving winding layout. A 56W/inch 3 1MHz 65W prototype with 100V-250V input is built to verify the feasibility of the converter. Experimental results show the peak efficiency 96.5% is achieved with 127V input and the whole system efficiency under the entire input voltage range is above 93%. Index Term-AHB flyback converter, high efficiency, voltage step down applications

show abstract

Section: Experiments Verificationmentioning

confidence: 99%

Analysis and Optimal Design of High-Frequency and High-Efficiency Asymmetrical Half-Bridge Flyback Converters

Ouyang

Andersen

2020

IEEE Trans. Ind. Electron.

View full text Add to dashboard Cite

show abstract

“…For 65W-level commercial charger or adaptor applications, active clamp flyback converter (ACF) is widely used with good features of high-efficiency, smallsize and flexible voltage output [3]- [9]. For 100W or above charger applications, PFC plus AHB can be used with flexible output voltage.…”

Section: Introductionmentioning

confidence: 99%

A new topology of asymmetric half bridge for 135W-level type-C power delivery application

Cao

Wang²,

Sun

et al. 2023

IEICE Electron. Express

View full text Add to dashboard Cite

This paper presents a new topology of asymmetric half bridge which can be called capacitor improved-asymmetric half bridge(CI-AHB) by adding a DC blocking capacitor adjacent to the leakage inductance for 135W type-c power delivery applications. Its detailed operation principle is shown and explained briefly. The clamping capacitor for CI-AHB stores energy when the main switch is on. Furthermore, the main switch stress for CI-AHB is low, which allows higher transformer ratio with lower voltagestress synchronous rectifier (SR) FET. The efficiency of CI-AHB under different conditions is shown theoretically. These features help CI-AHB topology have better efficiency for over 100W level adaptor applications with power factor correction (PFC) function of constant dc bus voltage 380V input. Finally, a 135W commercial-level prototypes, PFC with CI-AHB (95.9%) was made (16.34w/inch3 with case) with both EMI and thermal pass. A state-of-the-art summary is finally given on efficiency and density of 135W power delivery (PD) adaptors.

show abstract

Cycle-by-cycle Reverse Current Limiting in Actively Clamped Flyback Converters with Noncomplementary Control

Adragna,

De Bartolomeo,

Ferrazza

2024

2024 IEEE Applied Power Electronics Conference and Exposition (APEC)

View full text Add to dashboard Cite

Comparison between Control Methods of Active Clamp Flyback for Adaptor Application

Cited by 3 publications

References 7 publications

Analysis and Optimal Design of High-Frequency and High-Efficiency Asymmetrical Half-Bridge Flyback Converters

Analysis and Optimal Design of High-Frequency and High-Efficiency Asymmetrical Half-Bridge Flyback Converters

A new topology of asymmetric half bridge for 135W-level type-C power delivery application

Cycle-by-cycle Reverse Current Limiting in Actively Clamped Flyback Converters with Noncomplementary Control

Contact Info

Product

Resources

About