NDLI: A magnetic power controller of amorphous cores for a 200 kHz switching regulator

Content Provider	IEEE Xplore Digital Library
Author	Hiramatsu, R. Harada, K. Sasada, I.
Copyright Year	1965
Abstract	A half wave pulsewidth modulation (PWM) control device based on the principle of the half wave magnetic amplifier has interesting characteristics for controlling a high frequency switching regulator. We call it the magnetic power controller. By using the magnetic power controller of an amorphous core having a highly rectangular dynamic hysteresis loop and using a self-oscillating inverter, a highly reliable 200kHz switching regulator is realized, in which the current surge caused by the reverse recovery of the diode is well suppressed by the surge suppression characteristic of the magnetic power controller. The efficiency of this switching regulator is higher than 80% for an input voltage 110 ± 20V and for an out-put power 98W (5V, 10A and 24V, 2A). Peak to peak voltage of the switching noise observed in the output voltage is as small as 10mV under the above condition. The amorphous core used in this paper is of a Corich system with approximately zero magnetostriction.
Sponsorship	IEEE Magnetics Society
Starting Page	1764
Ending Page	1766
Page Count	3
File Size	325997
File Format	PDF
ISSN	00189464
Volume Number	18
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1982-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Amorphous magnetic materials Amorphous materials Magnetic cores Magnetic switching Regulators Magnetostriction Pulse width modulation Voltage Pulse amplifiers Surges
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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