Title:
DRIVER CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2018/216338
Kind Code:
A1
Abstract:
A driver circuit (1, 51, 61, 71, 81, 91) is provided with: two switching elements (Q1, Q2) connected in series between a pair of power supply lines (L1, L2), to which a power supply voltage is supplied; and a drive unit (2) that complementarily drives the two switching elements corresponding to an input signal. The driver circuit supplies an output voltage to a subject to be driven, said output voltage having been outputted from an output node (No) connected to an interconnection point between the two switching elements. The high-potential-side switching element (Q1) is an N channel type MOS transistor. The driver circuit is provided with: a voltage limiting unit (3) that limits the gate voltage of the high-potential-side switching element to a predetermined clamp voltage; a potential fixing resistor (4) connected between the gate and the source of the high-potential-side switching element; and a leak suppressing unit (5, 52, 62, 72, 82, 92) that suppresses occurrence of leak current flowing from the gate of the high-potential-side switching element to the output node.
Inventors:
TAKAUE TOSHIMITSU (JP)
MATSUDA KUNIHIKO (JP)
MATSUDA KUNIHIKO (JP)
Application Number:
PCT/JP2018/011739
Publication Date:
November 29, 2018
Filing Date:
March 23, 2018
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H03K19/0175; H02M1/08
Foreign References:
| JP2000164730A | 2000-06-16 | |||
| JPH02209011A | 1990-08-20 |
Attorney, Agent or Firm:
SATO INTERNATIONAL PATENT FIRM (JP)
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