DRIVE DEVICE

WIPO Patent Application WO/2018/100844

A1

A drive device (1) controls driving of an opening/closing MOS transistor (Q1) and a protection MOS transistor (Q2) which are interposed in series in a power supply path from a DC power supply (2) to a load (3) and which are connected in such a way that parasitic diodes therein are arranged reversely to each other, and the drive device is provided with a drive unit (5) and a reverse connection protection control unit (6). The drive unit drives the opening/closing MOS transistor and the protection MOS transistor by receiving power supplied from the DC power supply through a high-potential-side power supply line (L1) connected to a high-potential-side terminal of the DC power supply and a low-potential-side power supply line (L2) connected to a low-potential-side terminal of the DC power supply. When the potential relationship between the high-potential-side power supply line and the low-potential-side power supply line becomes opposite to the normal relationship, the reverse connection protection control unit performs a protection operation by forcibly driving the protection MOS transistor to turn off independently of the driving by the drive unit so that an electric current flowing in the power supply path is blocked.

JPS5828949	[Title of the Invention] Cathode-ray tube protection circuit
JP6472763	Gate control circuit and power supply circuit

KAWAMOTO AKIRA (JP)

PCT/JP2017/033281

June 07, 2018

September 14, 2017

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DENSO CORP (JP)

H03K17/08; H02J7/00; H02M1/00; H02M1/08; H03K17/00

JP2010081536A	2010-04-08
JP2014072596A	2014-04-21
JP2014050032A	2014-03-17
JP2011101187A	2011-05-19
JP2008276727A	2008-11-13
JP2005019532A	2005-01-20

SATO INTERNATIONAL PATENT FIRM (JP)

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