CN109324654A - A kind of band gap reference voltage source circuit - Google Patents
A kind of band gap reference voltage source circuit Download PDFInfo
- Publication number
- CN109324654A CN109324654A CN201811212282.6A CN201811212282A CN109324654A CN 109324654 A CN109324654 A CN 109324654A CN 201811212282 A CN201811212282 A CN 201811212282A CN 109324654 A CN109324654 A CN 109324654A
- Authority
- CN
- China
- Prior art keywords
- triode
- source circuit
- current source
- voltage
- resistance
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
- G05F1/567—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for temperature compensation
Abstract
The invention discloses a kind of band gap reference voltage source circuits, including voltage input end, current source, first resistor, micro-current source circuit, second resistance, first triode and voltage output end, the voltage input end, current source and voltage output end are sequentially connected, the voltage output end is connected to the micro-current source circuit by first resistor, the base stage of first triode is connected to by second resistance and is connected directly to the collector of the first triode, at the micro-current source circuit connection to the base connection point of the second resistance and first triode, the emitter of first triode is grounded；Compensation electric current is provided to second resistance by micro-current source circuit, the offset voltage with positive temperature coefficient is generated, the voltage across poles of base stage and emitter to the first triode compensates, and the reference voltage for exporting voltage output end has preferable temperature stability, output resistance is extremely low, strong applicability.
Description
Technical field
The present invention relates to power circuit field, especially a kind of band gap reference voltage source circuit.
Background technique
In electronic circuit, the DC power supply power supply of voltage stabilization is usually required.The composition one of small-power regulated power supply
As include power transformer, rectification circuit, filter circuit and voltage regulator circuit etc..Power transformer is by the electricity of AC network 220V
Buckling is required voltage value, then alternating voltage is become to the DC voltage of pulsation by rectification circuit, then passes through filtering
Circuit filters out the ripple in DC voltage, and voltage ripple of power network, load and temperature change are finally eliminated by voltage regulator circuit to defeated
The influence of voltage out.
Reference voltage Vref is an important component of voltage regulator circuit, it directly affects the performance of voltage regulator circuit.Cause
This requires reference voltage source output voltage stability high, and temperature coefficient is small, and noise is low.Be commonly used regulator tube group at base
Although reference voltage source circuit is simple, its output resistance is big, has certain limitation.
Summary of the invention
To solve the above problems, the purpose of the present invention is to provide a kind of band gap reference voltage source circuit, output resistance pole
Low, temperature stability is good, strong applicability.
Technical solution used by the present invention solves the problems, such as it is:
A kind of band gap reference voltage source circuit, including voltage input end, current source, first resistor, micro-current source circuit,
Two resistance, the first triode and voltage output end, the voltage input end, current source and voltage output end are sequentially connected, described
Voltage output end is connected to the micro-current source circuit by first resistor, is connected to first triode by second resistance
Base stage and be connected directly to the collector of the first triode, the micro-current source circuit connection to the second resistance and institute
At the base connection point for stating the first triode, the emitter of first triode is grounded.
Further, the micro-current source circuit includes the second triode, third transistor and 3rd resistor, first electricity
Resistance is respectively connected to the base stage of the second triode, the base stage of third transistor and collector, the collector of second triode
It is connected at the base connection point of the second resistance and first triode, the emitter of the third transistor is grounded.
Further, first triode is NPN type BJT.
Further, second triode is NPN type BJT.
Further, the third transistor is NPN type BJT.
The beneficial effects of the present invention are: a kind of band gap reference voltage source circuit that the present invention uses, by micro-current source circuit
Compensation electric current is provided to second resistance, the offset voltage with positive temperature coefficient is generated, to the base stage and transmitting of the first triode
The voltage across poles of pole compensates, and the reference voltage for exporting voltage output end has preferable temperature stability, output resistance
It is extremely low, strong applicability.
Detailed description of the invention
The invention will be further described with example with reference to the accompanying drawing.
Fig. 1 is a kind of circuit diagram of band gap reference voltage source circuit of the present invention.
Specific embodiment
Referring to Fig.1, a kind of band gap reference voltage source circuit of the invention, including voltage input end Vi, current source DLY,
One resistance R1, micro-current source circuit 1, second resistance R2, the first triode T1 and voltage output end Vo, the voltage input end
Vi, current source DLY and voltage output end Vo are sequentially connected, and the voltage output end Vo is connected to described micro- by first resistor R1
Current source circuit 1 is connected to the base stage of the first triode T1 by second resistance R2 and is connected directly to the one or three pole
The collector of pipe T1, the base stage that the micro-current source circuit 1 is connected to the second resistance R2 and the first triode T1 connect
Junction, the emitter ground connection of the first triode T1.
Specifically, the micro-current source circuit 1 includes the second triode T2, third transistor T3 and 3rd resistor R3, institute
It states first resistor R1 and is respectively connected to the base stage of the second triode T2, the base stage and collector of third transistor T3, described second
The collector of triode T2 is connected at the base connection point of the second resistance R2 and the first triode T1, the third
The emitter of triode T3 is grounded.
Specifically, the first triode T1 is NPN type BJT；The second triode T2 is NPN type BJT；The third
Triode T3 is NPN type BJT.
Compensation electric current is provided by micro-current source circuit 1 and gives second resistance R2, generates the offset voltage with positive temperature coefficient,
The voltage across poles of base stage and emitter to the first triode T1 compensates, the reference voltage tool for exporting voltage output end Vo
There is preferable temperature stability, output resistance is extremely low, strong applicability.
The above, only presently preferred embodiments of the present invention, the invention is not limited to above embodiment, as long as
It reaches technical effect of the invention with identical means, all should belong to protection scope of the present invention.
Claims (5)
1. a kind of band gap reference voltage source circuit, which is characterized in that including voltage input end (Vi), current source (DLY), the first electricity
It is defeated to hinder (R1), micro-current source circuit (1), second resistance (R2), the first triode (T1) and voltage output end (Vo), the voltage
Enter end (Vi), current source (DLY) and voltage output end (Vo) to be sequentially connected, the voltage output end (Vo) passes through first resistor
(R1) it is connected to the micro-current source circuit (1), is connected to the base stage of first triode (T1) by second resistance (R2)
And it is connected directly to the collector of the first triode (T1), the micro-current source circuit (1) is connected to the second resistance
(R2) and at the base connection point of first triode (T1), the emitter of first triode (T1) is grounded.
2. a kind of band gap reference voltage source circuit according to claim 1, which is characterized in that the micro-current source circuit
It (1) include that the second triode (T2), third transistor (T3) and 3rd resistor (R3), the first resistor (R1) are respectively connected to
Base stage, the base stage and collector of third transistor (T3) of second triode (T2), the collector of second triode (T2)
It is connected at the second resistance (R2) and the base connection point of first triode (T1), the third transistor (T3)
Emitter ground connection.
3. a kind of band gap reference voltage source circuit according to claim 1 or 2, which is characterized in that the one or three pole
Managing (T1) is NPN type BJT.
4. a kind of band gap reference voltage source circuit according to claim 2, which is characterized in that second triode (T2)
For NPN type BJT.
5. a kind of band gap reference voltage source circuit according to claim 2, which is characterized in that the third transistor (T3)
For NPN type BJT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212282.6A CN109324654A (en) | 2018-10-17 | 2018-10-17 | A kind of band gap reference voltage source circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212282.6A CN109324654A (en) | 2018-10-17 | 2018-10-17 | A kind of band gap reference voltage source circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109324654A true CN109324654A (en) | 2019-02-12 |
Family
ID=65262677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811212282.6A Pending CN109324654A (en) | 2018-10-17 | 2018-10-17 | A kind of band gap reference voltage source circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109324654A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114115422A (en) * | 2021-12-10 | 2022-03-01 | 博大融科(北京)信息技术有限公司 | Band gap reference circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6232829B1 (en) * | 1999-11-18 | 2001-05-15 | National Semiconductor Corporation | Bandgap voltage reference circuit with an increased difference voltage |
| US20090058391A1 (en) * | 2007-09-03 | 2009-03-05 | Adaptalog Limited | Temperature sensitive circuit |
| CN102622038A (en) * | 2012-03-29 | 2012-08-01 | 北京经纬恒润科技有限公司 | Band-gap reference voltage source circuit and band-gap reference voltage source |
| CN103440012A (en) * | 2013-08-30 | 2013-12-11 | 昆山奥德鲁自动化技术有限公司 | Voltage source circuit |
| CN107656569A (en) * | 2017-10-10 | 2018-02-02 | 杭州百隆电子有限公司 | A kind of band gap reference |
-
2018
- 2018-10-17 CN CN201811212282.6A patent/CN109324654A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6232829B1 (en) * | 1999-11-18 | 2001-05-15 | National Semiconductor Corporation | Bandgap voltage reference circuit with an increased difference voltage |
| US20090058391A1 (en) * | 2007-09-03 | 2009-03-05 | Adaptalog Limited | Temperature sensitive circuit |
| CN102622038A (en) * | 2012-03-29 | 2012-08-01 | 北京经纬恒润科技有限公司 | Band-gap reference voltage source circuit and band-gap reference voltage source |
| CN103440012A (en) * | 2013-08-30 | 2013-12-11 | 昆山奥德鲁自动化技术有限公司 | Voltage source circuit |
| CN107656569A (en) * | 2017-10-10 | 2018-02-02 | 杭州百隆电子有限公司 | A kind of band gap reference |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114115422A (en) * | 2021-12-10 | 2022-03-01 | 博大融科(北京)信息技术有限公司 | Band gap reference circuit |
| CN114115422B (en) * | 2021-12-10 | 2023-10-20 | 河南省科学院集成电路研究所 | Band gap reference circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8717791B2 (en) | Bridgeless boost PFC circuits and systems | |
| CN105827123B (en) | Power converting circuit and its drive control circuit | |
| CN103294096B (en) | Generate the linear voltage regulator of sub-benchmark output voltage | |
| CN102594167B (en) | AC-DC (alternating-current/direct-current) voltage stabilizing protection circuit and chip power conversion circuit | |
| CN205724840U (en) | A kind of secondary overpower-protection circuit and Switching Power Supply | |
| CN208589920U (en) | A kind of isolated form Wide-range voltage-stabilised power source circuit | |
| CN109324654A (en) | A kind of band gap reference voltage source circuit | |
| CN111200363A (en) | Switching power supply and electronic device | |
| CN201548272U (en) | Current source for electromagnetic flow meter | |
| CN107834850A (en) | DC linear voltage-stabilized power supply circuit | |
| CN110133359B (en) | Air conditioner zero-crossing detection circuit, electric control device and air conditioner | |
| TW200818101A (en) | Voltage stabilizing circuit | |
| CN109149978A (en) | The reverse exciting switching voltage regulator of super wide voltage output controls chip power supply circuit | |
| CN111796622B (en) | Low ripple coefficient voltage stabilizing circuit | |
| CN206149157U (en) | Commercial power step -down voltage stabilizing circuit | |
| CN108693912A (en) | With the band-gap reference circuit for being inverted band gap pair | |
| CN210578261U (en) | Fractional order KY converter | |
| CN204030941U (en) | A kind of protective circuit and voltage stabilizing circuit | |
| US20210313792A1 (en) | Power supply device for eliminating malfunction of overcurrent protection | |
| CN104270009B (en) | The power circuit and air conditioner of multi output | |
| CN109076665B (en) | Switching converter circuit | |
| CN109375690A (en) | A kind of tandem type switch voltage-stabilizing circuit | |
| WO2019056830A1 (en) | Current sampling circuit | |
| CN111193424B (en) | Circuit for aging direct-current passive EMI filter | |
| CN204289267U (en) | Relay low voltage start circuit and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190212 |
|
| RJ01 | Rejection of invention patent application after publication |