Title:
ドライバ回路
Document Type and Number:
Japanese Patent JP5200140
Kind Code:
B2
Abstract:
A gate driver circuit that can supply a negative gate voltage to a high-side circuit without being additionally provided with an insulated power supply is realized. A driver circuit 1 is configured such that a half-bridge circuit in which a first transistor 21 and a second transistor are connected in series includes a capacitor 13 that supplies a negative gate voltage to a high-side first transistor 21 via a first control circuit 11, and a control circuit power supply 14 that supplies a negative gate voltage to a low-side second transistor 22 via a second control circuit 12, one end of the capacitor 13 being connected to a negative voltage VEE on a negative terminal side of the control circuit power supply 14 via a switching element 30, and the other end being connected to a voltage on an output terminal 4, wherein the switching element 30 is controlled to be on upon a timing when the second transistor 22 is turned on.
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Inventors:
Akio Nakajima
Seiichiro Kihara
Seiichiro Kihara
Application Number:
JP2011106293A
Publication Date:
May 15, 2013
Filing Date:
May 11, 2011
Export Citation:
Assignee:
Sharp Corporation
International Classes:
H02M1/08; H03K17/687; H03K17/06
Domestic Patent References:
| JP2010035389A | ||||
| JP2008211703A | ||||
| JP2007288992A | ||||
| JP2006314154A |
Attorney, Agent or Firm:
Yoshifumi Masaki