Invention Grant
- Patent Title: Load drive apparatus
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Application No.: US14973961Application Date: 2015-12-18
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Publication No.: US09709617B2Publication Date: 2017-07-18
- Inventor: Masafumi Umeno
- Applicant: DENSO CORPORATION
- Applicant Address: JP Kariya
- Assignee: DENSO CORPORATION
- Current Assignee: DENSO CORPORATION
- Current Assignee Address: JP Kariya
- Agency: Posz Law Group, PLC
- Priority: JP2015-5276 20150114
- Main IPC: G01R31/02
- IPC: G01R31/02 ; G01R31/08 ; H03K17/082 ; H04B3/46

Abstract:
A load drive apparatus includes a switching element, a current detection circuit, a short circuit detection resistor, and a reflux diode. The switching element is placed to a high side of the inductive load, is interposed between the voltage source and the inductive load, and controls a current supplied to the inductive load. The current detection circuit is placed to a low side of the inductive load, and detects a current value of a current flowing through the low side of the inductive load. The short circuit detection resistor is interposed between the current detection circuit and a ground. The reflux diode is placed in a forward direction of the reflux diode and connects a middle point between the short circuit detection resistor and the current detection circuit with a different middle point between the switching element and the inductive load.
Public/Granted literature
- US20160202305A1 LOAD DRIVE APPARATUS Public/Granted day:2016-07-14
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