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Patent Searching and Data


Title:
NEGATIVE VOLTAGE GENERATION CIRCUIT AND POWER CONVERSION DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/146290
Kind Code:
A1
Abstract:
A negative voltage generation circuit 200 has: a first direct current voltage source 201 wherein a positive electrode end is connected to a first node N1 (Vin); a first diode 201 wherein the cathode is connected to a negative electrode end of the first direct current voltage source 201, and the anode is connected to an output end (fourth node N4) of a first negative voltage VC1; and a first capacitor 204 wherein a first end is connected to the output end of the first negative voltage VC1, and a second end is connected to a second node N2 (Vs_high). The first negative voltage VC1 is supplied to a first driver 20 that performs switching control of a first NMOSFET 11 (first switch element) connected between the first node N1 (Vin) and the second node N2 (Vs_high).

Inventors:
NAKAKOHARA YUSUKE (JP)
OKAWAUCHI YUTA (JP)
NAKAHARA KEN (JP)
NAGAI SHINICHIRO (JP)
OOTABARA YUUKI (JP)
Application Number:
PCT/JP2018/045460
Publication Date:
August 01, 2019
Filing Date:
December 11, 2018
Export Citation:
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Assignee:
ROHM CO LTD (JP)
International Classes:
H02M1/08; H02M3/155
Foreign References:
JP2001189653A2001-07-10
JP2010154721A2010-07-08
JP2014068326A2014-04-17
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
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