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Patent Searching and Data


Title:
DRIVER CIRCUIT AND POWER CONVERTER
Document Type and Number:
WIPO Patent Application WO/2021/187059
Kind Code:
A1
Abstract:
A driver circuit (12) comprises: an input terminal (41) for receiving an external command voltage (Vp); a feedback input terminal (44) for receiving a back electromotive force (Vb); a converter circuit (100) for converting the back electromotive force (Vb) into a feedback voltage (Vfb); an adding circuit (60); and a control circuit (103). The adding circuit (60) receives the external command voltage (Vp) and the feedback voltage (Vfb), adds up the external command voltage (Vp) and the feedback voltage (Vfb), and outputs a resultant addition voltage (Vad) to a gate terminal (21). In this configuration, the converter circuit (100) changes a gain, which is the ratio of the feedback voltage (Vfb) to the back electromotive force (Vb), depending upon whether a switching element (11) is turned on or off.

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Inventors:
AOYAMA SHUHEI (JP)
ISHIHARA YOSHIAKI (JP)
NOGE YUICHI (JP)
Application Number:
PCT/JP2021/007439
Publication Date:
September 23, 2021
Filing Date:
February 26, 2021
Export Citation:
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Assignee:
TOYOTA JIDOSHOKKI KK (JP)
International Classes:
H02M1/08; H02M1/00
Foreign References:
JP4762929B22011-08-31
JP2016519921A2016-07-07
Attorney, Agent or Firm:
ONDA Makoto et al. (JP)
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