CN113589017B - Dynamic regulation voltage detection circuit - Google Patents
Dynamic regulation voltage detection circuit Download PDFInfo
- Publication number
- CN113589017B CN113589017B CN202110752468.6A CN202110752468A CN113589017B CN 113589017 B CN113589017 B CN 113589017B CN 202110752468 A CN202110752468 A CN 202110752468A CN 113589017 B CN113589017 B CN 113589017B
- Authority
- CN
- China
- Prior art keywords
- resistor
- triode
- electrode
- resistance
- diode
- 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.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims description 30
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
Abstract
The invention discloses a dynamic regulation voltage detection circuit, and relates to the technical field of voltage detection. The external terminal of the circuit has a Power end, a B+ end, a B-end and an F end, wherein the Power end supplies Power to the whole circuit, the B-end is the public ground of the whole circuit, and the F end of the F-end is connected with the F end of the regulator or the rotor of the generator. The invention uses analog devices, has extremely low cost, flexible realization and accurate voltage detection, can detect the voltage of the regulator when in different duty ratios and loads, is compatible with 12V and 24V systems, can dynamically detect along with the voltage change of the regulator, and can be applied to all detection equipment.
Description
Technical Field
The invention relates to the technical field of power voltage detection, in particular to a dynamic regulation voltage detection circuit.
Background
The voltage regulation of the generator or the regulator is an important parameter, and the parameter affects the power supply stability of the whole real vehicle, so that voltage detection is required when the vehicle leaves the factory, and the accuracy and the flexibility of the voltage detection are affected by different detection modes.
Most of the current schemes are realized by using a single chip microcomputer, so that the circuit is complex and the cost is high.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a dynamic regulation voltage detection circuit which can dynamically detect along with the voltage change of a regulator and can be applied to all detection devices.
The invention is realized by the following technical scheme: a dynamic regulation voltage detection circuit comprises resistors R1-R20, a Darlington tube Q1, triodes Q2-Q8, capacitors C1-C5, diodes D1-D6 and a TVS tube ZD1; one end of the TVS tube ZD1 is used as a Power end to be connected with one end of a capacitor C5, one end of a resistor R1 and one end of a resistor R4, the other end of the TVS tube ZD1 is grounded with the other end of the capacitor C5, the other end of the resistor R1 is connected with the positive electrode of a diode D1, the other end of the resistor R4 is connected with the base electrode of a triode Q2, one end of the capacitor C4 and one end of a resistor R9, the other end of the capacitor C4 is connected with the emitter electrode of the triode Q2, one end of a capacitor C3, one end of a capacitor R5 and one end of a resistor R12, the other end of the resistor R6 is connected with the collector electrode of the triode Q2, the other end of the resistor C3 and one end of the resistor R11, the other end of the resistor R5 is connected with the negative electrode of the diode D2 and the collector electrode of the Darlington tube Q1, the positive electrode of the diode D2 is connected with the collector electrode of the triode Q3, one end of the triode Q4, one end of the resistor R8 and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the emitter of the triode Q4 is grounded through a resistor R2, the other end of the resistor R11 is connected with the base electrode of the triode Q4 and one end of a resistor R13, the other end of the resistor R13 is grounded, the other end of the resistor R8 is connected with the base electrode of the Darlington tube Q1, the emitter of the Darlington tube Q1 is connected with one end of a resistor R7, one end of a resistor R16 and the emitter of the triode Q6, the other end of the resistor R7 is connected with one end of the capacitor C1 and one end of a resistor R17, the other end of the capacitor C1 is connected with the base electrode of the triode Q5 through a resistor R10, the collector electrode of the triode Q5 is connected with the negative electrode of a diode D1 sequentially through a diode D3 and a resistor R3, the emitter of the triode Q5 is connected with the other end of a resistor R17, the diode D4 is connected between the base electrode of the triode Q5 and the emitter of the resistor R9 in series, the emitter of triode Q7 connects triode Q8's collecting electrode, triode Q8's projecting electrode ground connection, triode Q7's base connecting resistance R14's one end and resistance R15's one end, resistance R15's the other end ground connection, triode Q6's collecting electrode is connected to resistance R14's the other end, triode Q6's projecting electrode is connected darlington tube Q1's projecting electrode and resistance R16's one end, resistance R16's the other end termination triode Q6's base and diode D5's positive pole, diode D5's negative pole connecting resistance R19's one end, resistance R19's one end is connected to resistance R18's the other end, diode D6's positive pole is connected to resistance R18's one end and triode Q8's base, resistance R20's the other end ground connection, resistance R18, resistance R19's public end connecting resistance R17, electric capacity C1 public end.
Preferably, the diode D3 is a light emitting diode.
Preferably, the triode Q3 adopts a PNP triode Q3.
Preferably, the triode Q4 is an NPN triode Q4.
The invention has the beneficial effects that: the invention uses analog devices, has extremely low cost, flexible realization and accurate voltage detection, can detect the voltage of the regulator when in different duty ratios and loads, is compatible with 12V and 24V systems, can dynamically detect along with the voltage change of the regulator, and can be applied to all detection equipment.
The invention can detect regulators of different drive types, i.e. compatible high side drive regulators and low side drive regulators.
Drawings
FIG. 1 is a circuit diagram of the present invention;
fig. 2 is a diagram of the peripheral circuit connections of the present invention.
Detailed Description
As shown in fig. 1, the Power is connected to TVS ZD1 and capacitor C5 to ground, and is used for absorbing interference pulses, and is connected to resistor R1 and diode D1 to the collector of darlington Q1, resistor R3 to the collector of triode Q5, via resistor R4 and capacitor C4 to the base of PNP type triode Q2, resistors R6, R5, R12, the emitters of capacitor C3 and triode Q2 are connected to the Power end, the collector of triode Q2 is connected to resistor R6, capacitor C3 and the base of PNP type triode Q3, the base of PNP type triode Q3 is connected to the base of NPN type triode Q4 via resistor R11, the base of NPN type triode Q4 is connected to ground via resistor R13, the collector of PNP type triode Q3 is connected to the collector of Q4 and the positive electrode of electrolytic capacitor C2, via resistor R8 to the base of darlington Q1, and the emitter of NPN type triode Q4 is connected to ground via resistor R2, and the emitter of darlington Q1 is connected to the end.
The B+ end is connected to the F end through a resistor R7, and the F end is connected to the ground through a resistor R17. The end F is connected to the base electrode of the triode Q5 through a capacitor C1, a resistor R10 and a diode D4, the emitter electrode of the triode Q5 is grounded in common, the collector electrode of the triode Q5 is connected with the cathode of the light-emitting diode D3, and the anode of the light-emitting diode D3 is connected with the resistor to the cathode of the diode D1. B+ is connected with the emitter of the triode Q6, the base electrode is connected with the base electrode of the triode Q6 through a resistor R16, the base electrode is connected with a resistor R19 through a diode D5, the resistor R19 is connected with the end F, the base electrode is connected with the anode of the diode D6 through a resistor R18, the cathode of the diode D6 is connected with the base electrode of the triode Q8, the base electrode is connected with the ground through a resistor R20, the emitter of the triode Q8 is grounded, the collector of the triode Q8 is connected with the emitter of the triode Q7, the base electrode of the triode Q7 is connected with the ground through a resistor R15, and the base electrode of the triode Q7 is connected with the collector of the triode Q6 through a resistor R14. The collector of the triode Q7 is connected to the base of the triode Q2 through a resistor R9.
As shown in fig. 2, the peripheral circuit connection diagram of the present detection circuit is connected by a terminal connection method: the B+ terminal is connected with the B+ terminal of the regulator, the B-terminal is connected with the public ground, the F terminal is connected with the F terminal of the regulator, and the Power terminal is connected with the positive electrode of the Power supply. Taking a test low-side driving regulator as an example, the working principle of the detection circuit is described, and the detection circuit is specifically as follows:
when the Power end is electrified, Q3 is conducted, the electrolytic capacitor C2 is charged, Q1 is conducted, the voltage of the B+ end is gradually increased, when the voltage of the B+ end is lower than the regulating voltage of the regulator, a low-side drive MOSFET in the regulator is turned on to pull the F end down, Q8 is turned off, Q7 is turned off, and Q2 is turned off to be non-conductive, so that the phase 1 is formed; when the voltage of the regulator reaches the B+ end, the low-side drive MOSFET in the regulator is turned off, the F end is divided into high potential through R17 and R7, Q6, Q7 and Q8 are conducted, Q2 is in a saturated state, Q3 is turned off, the electrolytic capacitor C2 is discharged through Q4, Q1 is gradually turned off, and the B+ voltage is gradually reduced after Q1 is turned off, which is called as stage 2. The stage 1 and the stage 2 are repeated in this way, and the voltage of the B+ terminal is stabilized at the regulating voltage point of the regulator, so that the detection and the regulation of the regulating voltage are realized.
The regulator has slightly different regulating voltages under different loads, the exciting duty ratio of the F end is different under different loads, the voltage detection of the regulator under different loads, namely duty ratio, can be realized by adjusting the R2 resistance value, and 12V and 24V test systems are respectively tested, and test data are shown in tables 1 and 2.
Table 1 24V regulator R2 and F terminal duty cycle and voltage relationship
Table 2 12v regulator R2 and F terminal duty cycle and voltage relationship.
Claims (4)
1. A dynamic regulation voltage detection circuit is characterized by comprising resistors R1-R20, a Darlington tube Q1, triodes Q2-Q8, capacitors C1-C5, diodes D1-D6 and a TVS tube ZD1; one end of the TVS tube ZD1 is used as a Power end to be connected with one end of a capacitor C5, one end of a resistor R1 and one end of a resistor R4, the other end of the TVS tube ZD1 is grounded with the other end of the capacitor C5, the other end of the resistor R1 is connected with the positive electrode of a diode D1, the other end of the resistor R4 is connected with the base electrode of a triode Q2, one end of the capacitor C4 and one end of a resistor R9, the other end of the capacitor C4 is connected with the emitter electrode of the triode Q2, one end of a capacitor C3, one end of a capacitor R5 and one end of a resistor R12, the other end of the resistor R6 is connected with the collector electrode of the triode Q2, the other end of the resistor C3 and one end of the resistor R11, the other end of the resistor R5 is connected with the negative electrode of the diode D2 and the collector electrode of the Darlington tube Q1, the positive electrode of the diode D2 is connected with the collector electrode of the triode Q3, one end of the triode Q4, one end of the resistor R8 and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the emitter of the triode Q4 is grounded through a resistor R2, the other end of the resistor R11 is connected with the base electrode of the triode Q4 and one end of a resistor R13, the other end of the resistor R13 is grounded, the other end of the resistor R8 is connected with the base electrode of the Darlington tube Q1, the emitter of the Darlington tube Q1 is connected with one end of a resistor R7, one end of a resistor R16 and the emitter of the triode Q6, the other end of the resistor R7 is connected with one end of the capacitor C1 and one end of a resistor R17, the other end of the capacitor C1 is connected with the base electrode of the triode Q5 through a resistor R10, the collector electrode of the triode Q5 is connected with the negative electrode of a diode D1 sequentially through a diode D3 and a resistor R3, the emitter of the triode Q5 is connected with the other end of a resistor R17, the diode D4 is connected between the base electrode of the triode Q5 and the emitter of the resistor R9 in series, the emitter of triode Q7 connects triode Q8's collecting electrode, triode Q8's projecting electrode ground connection, triode Q7's base connecting resistance R14's one end and resistance R15's one end, resistance R15's the other end ground connection, triode Q6's collecting electrode is connected to resistance R14's the other end, triode Q6's projecting electrode is connected darlington tube Q1's projecting electrode and resistance R16's one end, resistance R16's the other end termination triode Q6's base and diode D5's positive pole, diode D5's negative pole connecting resistance R19's one end, resistance R19's one end is connected to resistance R18's the other end, diode D6's positive pole is connected to resistance R18's one end and triode Q8's base, resistance R20's the other end ground connection, resistance R18, resistance R19's public end connecting resistance R17, electric capacity C1 public end.
2. The dynamically adjusted voltage detection circuit of claim 1, wherein the diode D3 is a light emitting diode.
3. The dynamically adjusted voltage detection circuit of claim 1, wherein the transistor Q3 is a PNP transistor Q3.
4. The circuit of claim 1, wherein the transistor Q4 is an NPN transistor Q4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110752468.6A CN113589017B (en) | 2021-07-02 | 2021-07-02 | Dynamic regulation voltage detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110752468.6A CN113589017B (en) | 2021-07-02 | 2021-07-02 | Dynamic regulation voltage detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113589017A CN113589017A (en) | 2021-11-02 |
| CN113589017B true CN113589017B (en) | 2024-01-19 |
Family
ID=78245735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110752468.6A Active CN113589017B (en) | 2021-07-02 | 2021-07-02 | Dynamic regulation voltage detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113589017B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1710814A (en) * | 2004-06-18 | 2005-12-21 | 三星电子株式会社 | Apparatus and method for monitoring input voltage |
| CN1740937A (en) * | 2004-07-27 | 2006-03-01 | 罗姆股份有限公司 | Regulator circuit capable of detecting variations in voltage |
| CN101247087A (en) * | 2007-02-17 | 2008-08-20 | 精工电子有限公司 | Current detection circuit and current type switch adjustor |
| CN107659142A (en) * | 2016-07-25 | 2018-02-02 | 台湾积体电路制造股份有限公司 | Detector circuit, adjuster and burning voltage system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4131394B2 (en) * | 2003-02-19 | 2008-08-13 | 株式会社デンソー | Battery voltage detector |
| JP4744945B2 (en) * | 2004-07-27 | 2011-08-10 | ローム株式会社 | Regulator circuit |
| KR20200125006A (en) * | 2019-04-25 | 2020-11-04 | 삼성전자주식회사 | Power converter for detecting and selectively suppressing oscillations of output voltage |
-
2021
- 2021-07-02 CN CN202110752468.6A patent/CN113589017B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1710814A (en) * | 2004-06-18 | 2005-12-21 | 三星电子株式会社 | Apparatus and method for monitoring input voltage |
| CN1740937A (en) * | 2004-07-27 | 2006-03-01 | 罗姆股份有限公司 | Regulator circuit capable of detecting variations in voltage |
| CN101247087A (en) * | 2007-02-17 | 2008-08-20 | 精工电子有限公司 | Current detection circuit and current type switch adjustor |
| CN107659142A (en) * | 2016-07-25 | 2018-02-02 | 台湾积体电路制造股份有限公司 | Detector circuit, adjuster and burning voltage system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113589017A (en) | 2021-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101711071B (en) | LED control circuit and LED device | |
| CN102711316A (en) | LED backlight source drive device and liquid crystal display device utilizing same | |
| CN113589017B (en) | Dynamic regulation voltage detection circuit | |
| CN210430919U (en) | Direct-current low-power wide-pulse surge suppression circuit | |
| CN104582183A (en) | LED constant-current drive circuit with voltage-drop constant-current drive unit and device | |
| CN111130321A (en) | Single-power-supply negative-voltage power switch tube driving circuit | |
| CN204377199U (en) | Adopt constant current driver circuit for LED and the device of step-down constant current driving unit | |
| CN104661380B (en) | A kind of gamut adjusts electric current and corrects the LED drive circuit of dimming curve | |
| CN210429267U (en) | LED backlight driving circuit | |
| CN110505730B (en) | Linear LED drive circuit and full-voltage input linear LED drive method | |
| CN208317056U (en) | A kind of multifunctional integrated low-cost backlight circuit and display equipment | |
| CN111614073A (en) | Low-cost power supply reverse connection protection circuit | |
| CN220775676U (en) | PWM light modulation executor circuit | |
| CN211240200U (en) | Power supply control circuit | |
| CN110048391A (en) | A kind of overvoltage crowbar | |
| CN218997959U (en) | Signal input circuit for brushless fan controller | |
| CN104955216A (en) | LED constant-current drive circuit employing boost constant-current drive unit and apparatus | |
| CN211995170U (en) | Circuit for generating positive and negative voltage by single winding | |
| CN211184328U (en) | Dimming system | |
| CN220711343U (en) | Starting circuit with adjustable starting voltage of switching power supply | |
| CN220273517U (en) | Open-circuit protection circuit of topological structure and lamp | |
| CN217427990U (en) | Voltage boosting and stabilizing circuit and electronic equipment | |
| CN217240590U (en) | Power supply circuit | |
| CN220108265U (en) | Multipath car light LED constant current driving module of domestic chip | |
| CN217037080U (en) | Generator regulator with self-starting function |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |