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:
Grant
Type:
Utility
Filling date:
5 Oct 2020
Issue date:
9 Aug 2022