TW200715088A - Voltage supply circuit - Google Patents

Voltage supply circuit

Info

Publication number
TW200715088A
TW200715088A TW095135092A TW95135092A TW200715088A TW 200715088 A TW200715088 A TW 200715088A TW 095135092 A TW095135092 A TW 095135092A TW 95135092 A TW95135092 A TW 95135092A TW 200715088 A TW200715088 A TW 200715088A
Authority
TW
Taiwan
Prior art keywords
circuit
transistor
time constant
voltage supply
resistor
Prior art date
Application number
TW095135092A
Other languages
Chinese (zh)
Other versions
TWI327691B (en
Inventor
Rinya Hosono
Yusuke Fukuhara
Original Assignee
Toko Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toko Inc filed Critical Toko Inc
Publication of TW200715088A publication Critical patent/TW200715088A/en
Application granted granted Critical
Publication of TWI327691B publication Critical patent/TWI327691B/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/205—Substrate bias-voltage generators
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/22—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/26—Current mirrors
    • G05F3/265—Current mirrors using bipolar transistors only

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Control Of Electrical Variables (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)

Abstract

A voltage supply circuit, by which a capacitor of a time constant circuit can be charged rapidly when a voltage supply is started and a bias amount should be supplied to a transistor is easy adjusted, is provided. The voltage supply circuit is composed of a time constant circuit (6) including a serial circuit of a resistor (R0) and a capacitor (C0), and a series regulator type voltage generation circuit (7a) provided on the input side of the time constant circuit (6). In the voltage generation circuit (7a), a first transistor (Q1) connected between the input terminal (IN) of the voltage supply circuit and the time constant circuit (6), a second transistor (Q2) performing a current mirror operation with the first transistor (Q1), a third transistor (Q3) with its main current path connected with the resistor (R0) of the time constant circuit (6) in parallel, and a bias circuit for supplying a bias to the third transistor (Q3) according to a current supplied from the second transistor (Q2) are provided. Specifically, the bias circuit is a resistor (R3). Preferably, a diode (Q5) is further connected with the resistor (R0) of the time constant circuit (6) in parallel.
TW095135092A 2005-09-30 2006-09-22 Voltage supply circuit TWI327691B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005286667A JP2007094970A (en) 2005-09-30 2005-09-30 Voltage supply circuit

Publications (2)

Publication Number Publication Date
TW200715088A true TW200715088A (en) 2007-04-16
TWI327691B TWI327691B (en) 2010-07-21

Family

ID=37980581

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095135092A TWI327691B (en) 2005-09-30 2006-09-22 Voltage supply circuit

Country Status (3)

Country Link
JP (1) JP2007094970A (en)
KR (1) KR100813486B1 (en)
TW (1) TWI327691B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4757623B2 (en) * 2005-12-21 2011-08-24 パナソニック株式会社 Power circuit
JP2018159641A (en) * 2017-03-23 2018-10-11 日本特殊陶業株式会社 Voltage supply device
CN108874010A (en) * 2018-09-06 2018-11-23 深圳市中微半导体有限公司 A kind of strong anti-interference LDO module and anti-interference touch detection circuit
JP7273622B2 (en) * 2019-06-06 2023-05-15 ローム株式会社 Power supply circuit and power supply
US11079783B2 (en) * 2019-02-27 2021-08-03 Rohm Co., Ltd. Power supply circuit and power supply device
JP7271227B2 (en) * 2019-02-27 2023-05-11 ローム株式会社 power circuit
JP7427450B2 (en) * 2020-01-07 2024-02-05 キヤノン株式会社 Voltage conversion circuit and image forming device
CN116318153A (en) * 2023-05-10 2023-06-23 微龛(广州)半导体有限公司 Reference voltage driving circuit, analog-to-digital converter, chip and driving method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06301429A (en) * 1993-04-13 1994-10-28 Hitachi Ltd Reference voltage generating circuit
JP2913365B2 (en) * 1994-06-22 1999-06-28 日本プレシジョン・サーキッツ株式会社 Reference voltage circuit malfunction prevention circuit
JP3427637B2 (en) 1996-09-30 2003-07-22 ヤマハ株式会社 Reference voltage generation circuit
JP3068482B2 (en) 1997-01-30 2000-07-24 日本電気アイシーマイコンシステム株式会社 Constant voltage circuit
JP3533877B2 (en) * 1997-04-16 2004-05-31 ミツミ電機株式会社 Constant voltage circuit
JP3197240B2 (en) * 1997-08-08 2001-08-13 東光株式会社 Comparison circuit
JP2002023870A (en) * 2000-07-10 2002-01-25 Ricoh Co Ltd Reference voltage circuit and voltage regulator using the circuit
JP4647130B2 (en) * 2001-04-25 2011-03-09 新日本無線株式会社 Reference voltage generation circuit
JP3983612B2 (en) * 2002-07-08 2007-09-26 ローム株式会社 Stabilized power supply with current limiting function

Also Published As

Publication number Publication date
JP2007094970A (en) 2007-04-12
KR100813486B1 (en) 2008-03-13
KR20070037387A (en) 2007-04-04
TWI327691B (en) 2010-07-21

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees