Proper design of grounding for SMPS converters

Author

Perez, Reinaldo

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

Volume

1

fYear

2000

fDate

2000

Firstpage

465

Abstract

Converters that are used in a switching mode power supply (SMPS) are usually well designed internally so as to maximize efficiency and minimize output noise. However, deficiencies in the distribution of power and grounding within the PCB where the SMPS converters will be located can negate many of the advantages provided by these converters. It is shown that inductive and capacitive effects in the way SMPS converters are used in a PCB are one of the major causes of high conductive emission in PCBs. Furthermore, it is shown that changes in grounding layouts can affect these inductive and capacitive effects

Keywords

DC-DC power convertors; earthing; electromagnetic interference; printed circuit layout; switched mode power supplies; transient analysis; PCB; SMPS converters; capacitive effects; efficiency; grounding; grounding layouts; high conductive emission; inductive effects; output noise; switching mode power supply; Circuit noise; DC-DC power converters; Filters; Frequency; Grounding; Inductance; Switched-mode power supply; Switches; Switching converters; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2000. IEEE International Symposium on

Conference_Location

Washington, DC

Print_ISBN

0-7803-5677-2

Type

conf

DOI

10.1109/ISEMC.2000.875613

Filename

875613