過電流保護回路及びスイッチング回路

Title:

過電流保護回路及びスイッチング回路

Document Type and Number:

Japanese Patent JP7205636

Kind Code:

B2

Abstract:

An overcurrent protection circuit (11, 11a, 11A to 11C) is provided for protecting an overcurrent flowing through a switching element (14) that is controlled to be turned on and off based on a drive signal. The overcurrent protection circuit (11, 11a, 11A to 11C) includes: a first transistor (Q1) that is an N-channel field effect transistor (FET) having a drain connected to a control terminal of the switching element (14) and a grounded source; a second transistor (Q2) that is a PNP bipolar transistor having an emitter connected to the control terminal of the switching element (14), a collector connected to a gate of the first transistor (Q1) and grounded via a first capacitor (C11), and a base pulled up to a predetermined pull-up voltage (VTH); and a ground circuit connected in parallel with the first capacitor (C11).

Inventors:

Satoshi Iwai

Application Number:

JP2021545050A

Publication Date:

January 17, 2023

Filing Date:

September 12, 2019

Export Citation:

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