Switching power supply filter

Details Switching power supply filter Switching power supply filter

1987-08-26

1989-12-19

Salce, Patrick R.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

333181, H02M 114

Patent

active

048886750

ABSTRACT:
A filter for a switching power supply. The filter includes a common mode inductor with coil configurations allowing differential mode current from a dc source to pass through but attenuating common mode noise from the power supply so that the noise does not reach the dc source. The invention also includes the use of feed through capacitors at the switching power supply input terminals to provide further high-frequency noise attenuation.

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IBM Technical Disclosure Bulletin, Vol. 29, No. 10, March, 1987, p. 4437.
Common-Mode Noise Generation in a DC-T.-DC Converter, Power Conversion International, Nov.-Dec., 1979, pp. 20-26.
Guide for Common-Mode Filter Design, Coilcraft, Inc., 1985, pp. 1-10.

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