Small capacitor supports telecom power supply during brownouts

Focus:

With a relatively small capacitor, a charge pump can keep a telecom dc-dc converter (brick) operating through a brownout.

What you’ll learn:

• How to maintain operation of a dc-dc converter brick during brownout using minimal capacitance
• How to calculate capacitance required by a dc-dc converter brick to maintain operation during brownout

Notes:

An EDN Design Idea

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Author & Publication:

Samuel Kerem, Rockville, MD; Edited by Charles H Small and Fran Granville, EDN, May 15 2008

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