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Class-E current-driven center-tapped low dv/dt rectifier

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3 Author(s)
Bartoli, M. ; Dept. of Electron. Eng., Florence Univ., Italy ; Reatti, A. ; Kazimierczuk, M.K.

An analysis for a Class E current-driven center-tapped low dv/dt rectifier taking into account the transformer leakage inductances is given along with experimental verifications. The rectifier diodes turn on and off at low dv/dt. This results in low switching noise and low switching losses. Diode parasitic capacitances do not adversely affect the circuit operation. The absolute value of di/dt is limited at diode turn-off, reducing the reverse recovery current. The circuit is operated at a low output voltage ripple and, therefore, at a low power loss in the equivalent series resistance (ESR) of the filter capacitor. Experimental tests were performed for a rectifier circuit operated at an output power of PO=60 W, a minimum frequency of f=500 kHz, and an output voltage of VO=3.3 V. The theoretical and the experimental results are in good agreement. Experimental measurements demonstrate that the rectifier is suitable for high-power density, high-frequency applications that requires low-output voltages and high-currents

Published in:

Industry Applications Conference, 1995. Thirtieth IAS Annual Meeting, IAS '95., Conference Record of the 1995 IEEE  (Volume:1 )

Date of Conference:

8-12 Oct 1995