Input & Output Filters for Switching Power Supply

Document #:

LIGO-D1102177-v1

Document type:

D - Drawings

Abstract:

The input filter on a switching power supply is designed such that the electromagnetic interference is greatly reduced. It also prevents high frequency voltage on the primary power source from passing through the secondary power supply. The impedance issue is also considered to guarantee the stability of the switching power supply over entire operating range. The output filter is designed to reduce the ringing from the power supply itself due to switching control and make the transition more smooth when the load changes fast.

Files in Document:

• PDF of Schematic and Layout (Switching_Power_Filters.pdf, 360.2 kB)

Other Files:

• Altium Project Files (zipped) (Switching_Power_Filters (11-10-2011 9-33-22 AM).zip, 86.2 kB)
• Gerber data for PCB Manufacture (sps_v1.zip, 25.1 kB)

ICS/JIRA Record:

• ICS_LINK

Topics:

• Sensing and Control

Authors:

• Zhenhua Shao
• Rich Abbott

Keywords:

filter;EMI;stability;switching power;impedance

Referenced by:

• LIGO-E1200796: DCN for initial mass release of ISC drawings