Title:
ELECTRONIC CONTROL DEVICE AND METHOD FOR CONTROLLING ELECTRONIC CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/270020
Kind Code:
A1
Abstract:
The present invention provides a highly reliable electronic control device in which a plurality of inductive loads are connected in parallel with each other, which does not require a separate circuit for detecting a reverse current, and which can prevent a reverse current when a GND wire breaks. The present invention is characterized by comprising: a first high side switch element that electrically connects a battery power source to a first external load; a first low side switch element that electrically connects a ground to the first external load; a second high side switch element that electrically connects the battery power source to a second external load; and a second low side switch element that is connected to a ground to which the first low side switch element is also connected, and that electrically connects a ground to the second external load, wherein during a period in which a target current to the first external load is greater than a predetermined threshold, synchronous rectification control is carried out for on/off controlling of the first high side switch element and the first low side switch element, and during a period in which a target current to the first external load is equal to or lower than the predetermined threshold, recirculation control is carried out for switching off the first low side switch element and for on/off controlling of the first high side switch element.
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Inventors:
ARAKAWA KEI (JP)
Application Number:
PCT/JP2022/009523
Publication Date:
December 29, 2022
Filing Date:
March 04, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
B60R16/02; H03K17/00; H03K17/08; H03K17/695
Domestic Patent References:
| WO2017057682A1 | 2017-04-06 | |||
| WO2018079127A1 | 2018-05-03 | |||
| WO2020241469A1 | 2020-12-03 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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