Littelfuse, Inc.
ULTRA-LOW CLAMPING VOLTAGE SURGE PROTECTION MODULE USING DEPLETION MODE MOSFET

Last updated:

Abstract:

An ultra-low clamping voltage Surge Protection Module (SPM) is disclosed which utilizes a depletion mode MOSFET (D MOSFET). The SPM may be part of a circuit or a device and includes a primary protection stage and a secondary protection stage, with the D MOSFET being connected between the two stages. The SPM may include a single D MOSFET, dual D MOSFETs, or multiple D MOSFETs and the primary and secondary protection stages may be implemented with a number of different components. The SPM using D MOSFET(s) exhibits improved surge protection over circuits using inductors.

Status:
Application
Type:

Utility

Filling date:

5 Oct 2020

Issue date:

7 Apr 2022