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LOAD DUMP SUPPRESSION IN A SWITCH FOR ELECTRICALLY HEATED CATALYST

IP.com Disclosure Number: IPCOM000007814D
Original Publication Date: 1996-Aug-01
Included in the Prior Art Database: 2002-Apr-25

Publishing Venue

Motorola

Related People

Authors:
John Qualich

Abstract

In a switch for a catalytic converter heater used in an automobile, it is possible to minimize the energy dissipation of a transient suppressor (Dl) by dissipating a large portion of the load dump energy in one ofthe switching transistors (Ql). This allows use of a smaller, and less expensive, transient sup- pressor Dl.