High-efficiency, high step-up DC-DC converters
Many applications call for high step-up DC-DC converters that do not require isolation. Some DC-DC converters can provide high step-up voltage gain, but with the penalty of either an extreme duty…
Design considerations for high-voltage high-power full-bridge zero-voltage-switched PWM converter
- J. Sabate, V. Vlatkovic, R. Ridley, F. Lee, B. Cho
- EngineeringFifth Annual Proceedings on Applied Power…
- 11 March 1990
A steady-state analysis is presented with complete characterization of the converter operation. A small-signal model of the converter is established. The design procedures based on the analysis are…
Analytical loss model of power MOSFET
- Yuancheng Ren, Ming Xu, Jinghai Zhou, F. Lee
- Engineering, PhysicsIEEE transactions on power electronics
- 6 March 2006
An accurate analytical model is proposed in this paper to calculate the power loss of a metal-oxide semiconductor field-effect transistor. The nonlinearity of the capacitors of the devices and the…
Three-dimensional space vector modulation for four-leg voltage-source converters
- R. Zhang, V. H. Prasad, D. Boroyevich, F. Lee
- Engineering
- 7 August 2002
Four-leg voltage-source converters can effectively provide the neutral connection in three-phase four-wire systems. They can be used in inverter, rectifier, and active filter applications to handle…
Performance improvements of interleaving VRMs with coupling inductors
- Pit-Leong Wong, P. Xu, P. Yang, F. Lee
- Engineering
- 1 July 2001
The multichannel interleaving buck converter with small inductance has proved to be suitable for voltage regulator modules (VRMs) with low voltages, high currents, and fast transients. Integrated…
LLC resonant converter for front end DC/DC conversion
- Bo Yang, F. Lee, A. Zhang, Guisong Huang
- EngineeringAPEC. Seventeenth Annual IEEE Applied Power…
- 7 August 2002
A new LLC resonant converter is proposed for front end DC/DC conversion in a distributed power system. Three advantages are achieved with this resonant converter. First, ZVS turn on and low turn off…
Zero-voltage switching technique in DC/DC converters
- Kwang-Hwa Liu, F. Lee
- Engineering17th Annual IEEE Power Electronics Specialists…
- 23 June 1986
A novel resonant switch operating under the principle of zero-voltage switching is presented. In contrast to the zero-current switching, this technique eliminates the switching loss and dv/dt noise…
High-frequency quasi-resonant converter technologies
- F. Lee
- EngineeringProceedings of the IEEE
- 1 April 1988
Resonant switch topologies operating under the principle of zero-current switching (ZCS) and zero-voltage switching (ZVS) are introduced to minimize switching losses, stresses, and noises. Using the…
Optimal design methodology for LLC resonant converter
- B. Lu, W. Liu, Y. Liang, F. Lee, J. D. van Wyk
- Engineering, BusinessTwenty-First Annual IEEE Applied Power…
- 19 March 2006
Although LLC resonant converter can achieve wide operation range with high efficiency, lack of design methodology makes it difficult to be implemented. In this paper, based on the theoretical…
Utilization of an active-clamp circuit to achieve soft switching in flyback converters
Flyback derived topologies are attractive because of their relative simplicity when compared with other topologies used in low power applications. Incorporation of active-clamp circuitry into the…
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