Invention Grant
- Patent Title: Voltage generating circuit
- Patent Title (中): 电压发生电路
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Application No.: US14009715Application Date: 2012-04-09
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Publication No.: US09564805B2Publication Date: 2017-02-07
- Inventor: Shinya Sano , Masashi Horiguchi , Takahiro Miki , Mitsuru Hiraki
- Applicant: Shinya Sano , Masashi Horiguchi , Takahiro Miki , Mitsuru Hiraki
- Applicant Address: JP Tokyo
- Assignee: RENESAS ELECTRONICS CORPORATION
- Current Assignee: RENESAS ELECTRONICS CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Mattingly & Malur, PC
- Priority: JP2011-088072 20110412
- International Application: PCT/JP2012/059643 WO 20120409
- International Announcement: WO2012/141123 WO 20121018
- Main IPC: H02M3/158
- IPC: H02M3/158 ; G05F3/30 ; G05F3/26

Abstract:
A voltage generating circuit, in which the influence of offset of an amplifier on an output voltage is reduced, has first and second bipolar transistors (Q1, Q2) having emitter terminals at the same electric potential. A base terminal of Q1 is disposed on a collector side of Q2. A first resistance element connects the collector side of Q2 with the base side of Q2; and a second resistance element (R1) connects a collector side of Q1 to R2. A third resistance element (R3) connects a base terminal of Q2 with the electric potential of the emitter terminals. An amplifier (A1) outputs a voltage based on a voltage difference between the collector sides of Q1 and Q2; and a voltage-current converting section (MP1, MP2) converts amplifier output into a current supplied to the connection node of R1 and R2. A voltage is then output on the basis of the generated current.
Public/Granted literature
- US20140015504A1 VOLTAGE GENERATING CIRCUIT Public/Granted day:2014-01-16
Information query
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