Invention Application
- Patent Title: LOAD DRIVE DEVICE
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Application No.: US17786009Application Date: 2020-12-11
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Publication No.: US20230016629A1Publication Date: 2023-01-19
- Inventor: Keishi KOMORIYAMA , Yoichiro KOBAYASHI
- Applicant: Hitachi Astemo, Ltd.
- Applicant Address: JP Hitachinaka-shi, Ibaraki
- Assignee: Hitachi Astemo, Ltd.
- Current Assignee: Hitachi Astemo, Ltd.
- Current Assignee Address: JP Hitachinaka-shi, Ibaraki
- Priority: JP2019-237205 20191226
- International Application: PCT/JP2020/046238 WO 20201211
- Main IPC: H03K17/082
- IPC: H03K17/082 ; H03F3/45

Abstract:
Achieved is a load drive device capable of suppressing local concentration of temperature at the time of absorbing a counter electromotive force of an inductive load while suppressing a size of a power transistor. The load drive device includes a first transistor connected between a first control electrode and an inductive load. Further, the load drive device includes an active clamp circuit that becomes conductive when a terminal voltage of a second control electrode between the first transistor and the inductive load exceeds a threshold. Furthermore, the load drive device includes a second transistor connected to the second control electrode and connected in parallel to the first transistor.
Public/Granted literature
- US12191845B2 Load drive device Public/Granted day:2025-01-07
Information query
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