Universal AC input high density power adapter design with a Clamped Series Resonant Converter

Ramabhadran, Ramanujam; She, Xu; Levy, Yehuda; Glaser, John; Raju, Ravisekhar; Datta, Rajib

doi:10.1109/ecce.2015.7310482

Cited by 4 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…AC–DC power supplies with power factor correction (PFC) are used in a wide range of applications. The applications of AC–DC converters include battery charger [1–6], light‐emitting diode (LED) lighting [7–16], electric vehicle (EV) [17, 18] and laptop computer [19, 20]. A two‐stage PFC power converter [1, 2, 21–24] is a series connection of an AC–DC converter for correcting PF and a DC–DC one for regulating the output voltage.…”

Section: Introductionmentioning

confidence: 99%

“…The two‐stage AC–DC converter requires at least two power switches and two individual controllers, which leads to a high cost and a large volume. On the other hand, a single‐stage AC–DC converter combines the PFC stage and the voltage‐regulating one into a single converter [3–16, 20, 24–31]. Therefore, single‐stage converters have a small component number and achieve low costs compared with two‐stage converters, and are often applied for space‐constrained applications such as battery chargers [3–6].…”

Section: Introductionmentioning

confidence: 99%

“…This is because most of them are hard‐switching converters [9–14], which generate large switching losses. For power‐conversion efficiency improvements, the resonant topologies, such as the LLC converters [4, 5, 15, 30, 31] and class‐E converters [7, 8, 16, 21, 32–39], have also been applied to the AC–DC converters [4–8, 15, 16, 20–23, 30–32]. The resonant converters have more circuit components than the traditional converters because of the resonant circuit.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

High‐frequency single‐switch PFC with frequency‐modulation controlled class‐E2 converter

Zhu

Ikari

Lovison

et al. 2021

IET Power Electronics

View full text Add to dashboard Cite

This paper presents a single-switch zero-voltage switching (ZVS) power-factor correction converter based on the class-E 2 converter at 1 MHz switching frequency. A design method for ensuring the ZVS for the entire line-voltage period is proposed. By visualising the ZVS region in the parameter space, circuit parameters can be easily obtained to achieve the ZVS for the entire line-voltage period. Additionally, a closed-loop controller is applied for achieving a high power factor, low total harmonic distortion of the input current and output voltage regulation. The experimental circuit achieved the ZVS in the entire line-voltage period against load variations. As a result, the implemented converter achieved the same level of power-conversion efficiency as the 100-kHz power-factor correction converters and a high power factor with low total harmonic distortion, which denoted the effectiveness of the proposed design method. INTRODUCTIONAC-DC power supplies with power factor correction (PFC) are used in a wide range of applications. The applications of AC-DC converters include battery charger [1-6], light-emitting diode (LED) lighting [7-16], electric vehicle (EV) [17, 18] and laptop computer [19, 20]. A two-stage PFC power converter [1, 2, 21-24] is a series connection of an AC-DC converter for correcting PF and a DC-DC one for regulating the output voltage. The two-stage AC-DC converter requires at least two power switches and two individual controllers, which leads to a high cost and a large volume. On the other hand, a single-stage AC-DC converter combines the PFC stage and the voltageregulating one into a single converter [3-16, 20, 24-31]. Therefore, single-stage converters have a small component number and achieve low costs compared with two-stage converters, and are often applied for space-constrained applications such as battery chargers [3-6]. Traditional converter topologies, such as boost [11, 12], buck [13], buck-boost [13, 14], and Flyback converters [9, 10],This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High‐frequency single‐switch PFC with frequency‐modulation controlled class‐E2 converter

Zhu

Ikari

Lovison

et al. 2021

IET Power Electronics

View full text Add to dashboard Cite

show abstract

Design and implementation of a 1.3 kW, 7-level flying capacitor multilevel AC-DC converter with power factor correction

Moon

Haken

Saathoff

et al. 2017

2017 IEEE Applied Power Electronics Conference and Exposition (APEC)

View full text Add to dashboard Cite

High-frequency isolated ac-dc converter with stacked architecture

Lim

Bandyopadhyay

Perreault

2017

2017 IEEE Applied Power Electronics Conference and Exposition (APEC)

View full text Add to dashboard Cite

Abstract-This paper presents a new isolated ac-dc power converter achieving both high power factor and converter miniaturization suitable for many low power ac-dc applications. The proposed ac-dc converter architecture comprises a line-frequency rectifier, a stack of capacitors, a set of regulating converters, and a multi-input isolated bus converter. Among many suitable circuit implementations, the prototype system utilizes the resonanttransition buck converter as a regulating converter, and the capacitively-aided isolated bus converter for the isolated bus converter. The converter is miniaturized by operating at high frequency (1 -10 MHz range), and it buffers the ac-line frequency energy with a pair of stacked ceramic capacitors (1 µF and 150 µF, 100 V rating) without a requirement for electrolytic capacitors. The prototype converter is implemented to operate from 120 Vac to 12 V, and up to 50 W output as an example isolated ac-dc converter for power supply applications. The prototype converter demonstrates with 88 % efficiency and 0.86 power factor, and provides 50 W/in 3 power density, which is five times higher than the power density of typical conventional designs.

show abstract

Universal AC input high density power adapter design with a Clamped Series Resonant Converter

Cited by 4 publications

References 4 publications

High‐frequency single‐switch PFC with frequency‐modulation controlled class‐E2 converter

High‐frequency single‐switch PFC with frequency‐modulation controlled class‐E2 converter

Design and implementation of a 1.3 kW, 7-level flying capacitor multilevel AC-DC converter with power factor correction

High-frequency isolated ac-dc converter with stacked architecture

Contact Info

Product

Resources

About