CN113346749A - Power supply voltage stabilization integrating circuit - Google Patents
Power supply voltage stabilization integrating circuit Download PDFInfo
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- CN113346749A CN113346749A CN202110644947.6A CN202110644947A CN113346749A CN 113346749 A CN113346749 A CN 113346749A CN 202110644947 A CN202110644947 A CN 202110644947A CN 113346749 A CN113346749 A CN 113346749A
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- power supply
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- 230000006641 stabilisation Effects 0.000 title claims abstract description 13
- 238000011105 stabilization Methods 0.000 title claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims abstract description 29
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 23
- 230000010354 integration Effects 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000001629 suppression Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
Abstract
A power supply voltage stabilization integral circuit relates to the technical field of power supply circuits, is arranged between a vehicle-mounted storage battery and a power supply chip, and comprises an LC filter circuit, a voltage stabilizing circuit and an integral capacitor C1, wherein the vehicle-mounted storage battery is connected with the LC filter circuit through a BAT + interface and a BAT-interface, the LC filter circuit is connected with the voltage stabilizing circuit, and the integral capacitor C1 is connected between the voltage stabilizing circuit and the power supply chip in parallel; the LC filter circuit consists of an inductor L22 and a capacitor C22; the voltage-stabilizing integration circuit comprises transistors V1, V3 and V4, a voltage regulator tube V2, a filter capacitor C2, current-limiting resistors R2, R3 and R5, resistors R1 and R6; after the power input voltage is filtered by the LC filter circuit, the power input voltage exceeding the threshold value of the voltage stabilizing tube is clamped by utilizing the conduction or bias characteristic of an electronic device in the voltage stabilizing circuit, and then the signal output by the transistor V1 is subjected to integration processing by the integrating capacitor C1, so that the use of a high-power TVS tube is reduced, and the cost is saved; the circuit is simple and the volume is small.
Description
Technical Field
The invention relates to the technical field of power supply circuits, in particular to a power supply voltage-stabilizing integrating circuit.
Background
With the improvement of the living standard of people, automobiles enter thousands of households, the development of the automobile industry brings huge changes to our lives, the existing automobiles are developed towards the direction of intellectualization and networking, vehicle-mounted electronic products become important components of the automobiles, however, the working environment of the vehicle-mounted electronic products is extremely severe due to the complexity of the working conditions of the automobiles in the driving process, and how to enable each electronic device on the automobiles to have enough shock resistance and anti-interference capacity, particularly typical load rejection voltage pulse, becomes an important index for improving the automobile quality and guaranteeing the automobile safety.
What is the load throwing? At present, generators adopted in automobiles are three-phase motors, and when a load is suddenly disconnected, the current in a stator winding of the generator is suddenly reduced, however, a transient pulse voltage for preventing the reduction of the transient pulse voltage is induced in the stator winding, and meanwhile, the excitation winding of the generator has a large current, a transient high voltage is correspondingly generated, and the load rejection voltage is composed of the two parts of voltage. The load rejection voltage can be radiated to any vehicle-mounted equipment and a controller system of the whole vehicle through the beam system to bear the impact of high pulse voltage of the load rejection, and at the moment, if the load rejection protection measure is not carried out in place, the vehicle-mounted electronic equipment and the controller can be caused to be out of order or even be permanently damaged.
If the power supply is the basis for the normal operation of each vehicle electronic device, the power interface circuit is a prerequisite for ensuring that the vehicle electronic device can obtain a stable power supply. In a conventional control circuit, a TVS (transient diode) is generally added to a power input terminal to improve surge voltage bearing capability of a controller, a BAT + and BAT-interface of a vehicle-mounted battery are connected to an LC filter circuit, and an LC filter circuit is formed by L23 and C23, as shown in fig. 1. The suppression to the load rejection voltage is mainly by the TVS transistor on the interface circuit or the same type of voltage suppression device (such as voltage dependent resistor), the power of the TVS must be increased in order to improve the load rejection performance of the controller, and the power of the TVS is proportional to the volume and the cost. The application occasion in the wide voltage range has limitation, which is mainly limited by the later stage power supply chip, and the input voltage of the power supply chip determines the range of the input voltage of the whole controller. The cost and the volume of the wide input voltage power supply chip are factors which are not negligible in design.
In summary, the conventional power interface circuit has the following problems: 1. as the surge voltage in the circuit is gradually increased, the volume of the TVS tube is increased, which results in increased cost; 2. the voltage input range of the power supply chip is limited; 3. no input power source reverse connection protection function.
Disclosure of Invention
Aiming at the technical defects in the prior art, the invention provides a power supply voltage stabilization integrating circuit which is simple in structure and low in cost.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a power supply voltage stabilization integral circuit is arranged between a vehicle-mounted storage battery and a power supply chip and comprises an LC filter circuit, a voltage stabilizing circuit and an integral capacitor C1, wherein the vehicle-mounted storage battery is connected with the LC filter circuit through BAT + and BAT-interfaces, the LC filter circuit is connected with the voltage stabilizing circuit in series, and the integral capacitor C1 is connected between the voltage stabilizing circuit and the power supply chip in parallel.
Further, the LC filter circuit is composed of an inductor L22 and a capacitor C22; the voltage stabilizing circuit comprises transistors V1, V3 and V4, a voltage regulator tube V2, a filter capacitor C2, current limiting resistors R2, R3, R5, resistors R1 and R6; the emitter of the transistor V1 is connected with the positive output end of the LC filter circuit, the collector of the transistor V1 is connected with the anode of the power chip, and the base of the transistor V1 is connected with the collector of the transistor V3 through a resistor R3; an emitter of the transistor V3 is connected with a negative output end of the LC filter circuit, a base of the transistor V3 and a collector of the transistor V4 are connected with an emitter of the transistor V1 through a resistor R2, an emitter of the transistor V4 is connected with the negative output end of the LC filter circuit, a base of the transistor V4 is connected with a positive electrode of a voltage regulator tube V2 and one end of a capacitor C2 through a current-limiting resistor R5, a negative electrode of the voltage regulator tube V2 is connected with a collector of the transistor V1, the other end of the capacitor C2 is connected with the negative output end of the LC filter circuit, the resistor R1 is connected with an emitter and a base of the transistor V1, and the resistor R6 is connected with an emitter and a base of the transistor V4.
Preferably, the transistor V1 is a PNP transistor.
Preferably, the transistor V1 is a PMOS transistor.
Preferably, the transistors V3 and V4 are both NPN transistors.
The invention has the following beneficial effects: compared with the traditional power interface circuit, the power input voltage is subjected to filtering processing by the LC filter circuit, the power input voltage exceeding the threshold value of the voltage regulator tube is clamped by utilizing the conduction or bias characteristic of an electronic device in the voltage regulator circuit, and the signal output by the transistor V1 is subjected to integration processing by the integrating capacitor C1, so that the use of a high-power TVS tube is reduced, and the cost is saved; the circuit is simple and the volume is small; the voltage-resistant requirement on a rear-stage power supply chip or circuit is reduced.
Drawings
FIG. 1 is a schematic diagram of a power interface of a conventional control circuit;
FIG. 2 is a schematic diagram of a power supply voltage stabilizing integration circuit of the power interface of the controller in the embodiment;
FIG. 3 is a schematic diagram of an LC filter circuit according to the present embodiment;
FIG. 4 is a schematic diagram of a voltage regulator circuit according to the present embodiment.
Detailed Description
To facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following detailed description and accompanying drawings.
The power supply voltage stabilization integrating circuit shown in fig. 2 is arranged between a vehicle-mounted storage battery and a power supply chip, and comprises an LC filter circuit, a voltage stabilization integrating circuit and an integrating capacitor C1, wherein the vehicle-mounted storage battery is connected with the LC filter circuit through a BAT + interface and a BAT-interface, the LC filter circuit is connected with a voltage stabilizing circuit in series, the integrating capacitor C1 is connected between the voltage stabilizing circuit and the power supply chip in parallel, and the capacitance value of the integrating capacitor C1 can be adjusted according to the current output by the voltage stabilizing circuit.
As shown in fig. 3, the LC filter circuit is composed of an inductor L22 and a capacitor C22.
Specifically, the voltage stabilizing circuit shown in fig. 4 includes transistors V1, V3 and V4, a voltage regulator tube V2, a filter capacitor C2, current limiting resistors R2, R3, R5, and resistors R1, R6; the emitter of the transistor V1 is connected with the positive output end of the LC filter circuit, the collector of the transistor V1 is connected with the anode of the power chip, and the base of the transistor V1 is connected with the collector of the transistor V3 through a resistor R3; an emitter of the transistor V3 is connected with a negative output end of the LC filter circuit, a base of the transistor V3 and a collector of the transistor V4 are connected with an emitter of the transistor V1 through a resistor R2, an emitter of the transistor V4 is connected with the negative output end of the LC filter circuit, a base of the transistor V4 is connected with a positive electrode of a voltage regulator tube V2 and one end of a capacitor C2 through a current-limiting resistor R5, a negative electrode of the voltage regulator tube V2 is connected with a collector of the transistor V1, the other end of the capacitor C2 is connected with the negative output end of the LC filter circuit, the resistor R1 is connected with an emitter and a base of the transistor V1, and the resistor R6 is connected with an emitter and a base of the transistor V4.
Specifically, for example, a 12V vehicle-mounted storage battery, a transistor V1 which is a PNP type triode, and transistors V3 and V4 which are NPN type triodes are used, under normal conditions, an input voltage of the vehicle-mounted storage battery is input into an LC filter circuit through BAT + and BAT-ports, and then a forward bias input voltage is provided for a transistor V3 through a current limiting resistor R2, so that a transistor V3 is in saturated conduction, and the forward bias input voltage and the reverse bias input voltage are provided for the PNP type triode together with resistors R1 and R3, so that the PNP type triode is in saturated conduction; when the input voltage of the power supply does not exceed the voltage-stabilizing threshold of the voltage-stabilizing tube V2, the voltage-stabilizing tube V2 is not conducted, the transistor V4 does not have positive bias input voltage, and therefore the transistor V4 is not conducted, and the voltage at the two ends of the integrating capacitor C1 is the input voltage (V) of the batterybat) Minus the conduction voltage drop (V) of the PNP type triodece) And finally the input voltage to the power supply chip is Vbat-Vce。
However, when the input voltage of the battery is too high or abnormal load rejection occurs, if the input voltage of the battery reaches 30V, the regulated threshold of the regulator tube V2 is 16V, at this time, the input voltage of the battery is greater than the regulated threshold of the regulator tube V2, the regulator tube V2 is turned on, the voltage at the two ends of the filter capacitor C2 is 14V obtained by subtracting the regulated threshold of the regulator tube V2 from the input voltage of the battery, the input voltage of the battery makes the transistor V4 be positively biased and saturated and turned on through the current limiting resistor R5, so that the base voltage of the transistor V3 is reduced and cannot provide positive bias voltage for the transistor V3, the transistor V3 is turned off, the reverse bias voltage of the PNP triode disappears, and the PNP triode is turned off. Due to the existence of the integrating capacitor C1, the voltage of the negative electrode of the voltage regulator tube V2 cannot suddenly drop to zero, when the voltage of the negative electrode of the voltage regulator tube V2 drops below the voltage-stabilizing threshold value, the voltage regulator tube V2 is not conducted, the transistor V4 is also not conducted, the transistor V3 is conducted, the PNP type triode is conducted, and the operation is repeated. Therefore, the input voltage of the power supply chip is stabilized within the voltage stabilizing threshold of the voltage stabilizing tube V2, and a good voltage stabilizing effect is achieved.
Preferably, the PNP type triode is replaced by a PMOS transistor, so that the overcurrent capability of the voltage stabilizing circuit in the embodiment can be increased, and a higher rear-stage load can be driven.
The invention utilizes the conduction and bias characteristics of the electronic device, and the battery can not provide forward or reverse bias voltage to conduct the triode under the condition that the input voltage of the battery is reversely connected, thereby having good function of power reverse connection protection.
The invention can play a good role in stabilizing the voltage of the power interfaces of equipment such as a vehicle-mounted electronic fan, a vehicle-mounted water pump, a vehicle-mounted oil pump, an electric power steering controller or a vehicle-mounted motor controller and the like.
The invention adds some components to construct the power supply voltage stabilization integral circuit on the basis of the traditional power supply interface circuit, selects voltage-stabilizing tubes with different types to flexibly adjust the voltage stabilization range, reduces the voltage input range of a later-stage power supply chip, reduces the requirement on the power supply chip, and does not need to rely on a high-power TVS tube when load rejection test is carried out.
Compared with the traditional power interface circuit, after the input voltage of the battery is filtered by the LC filter circuit, the input voltage of the power supply exceeding the threshold value of the voltage regulator tube is clamped by utilizing the conduction or bias characteristic of an electronic device in the voltage regulator circuit, and then the signal output by the transistor V1 is subjected to integral processing by the integral capacitor C1, so that the use of a high-power TVS tube is reduced, and the cost is saved; the circuit is simple and the volume is small; the voltage-resistant requirement on a rear-stage power supply chip or circuit is reduced.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.
Claims (5)
1. The utility model provides a power steady voltage integrator circuit, sets up between on-vehicle battery and power chip, its characterized in that: the vehicle-mounted storage battery comprises an LC filter circuit, a voltage stabilizing circuit and an integrating capacitor C1, wherein the vehicle-mounted storage battery is connected with the LC filter circuit through a BAT + and BAT-interface, the LC filter circuit is connected with the voltage stabilizing circuit in series, and the integrating capacitor C1 is connected between the voltage stabilizing circuit and a power supply chip in parallel.
2. The power supply voltage stabilization integration circuit of claim 1, wherein: the LC filter circuit is composed of an inductor L22 and a capacitor C22; the voltage stabilizing circuit comprises transistors V1, V3 and V4, a voltage regulator tube V2, a filter capacitor C2, current limiting resistors R2, R3, R5, resistors R1 and R6, wherein an emitter of the transistor V1 is connected with a positive output end of the LC filter circuit, a collector of the transistor V1 is connected with the anode of a power chip, and a base of the transistor V1 is connected with a collector of the transistor V3 through a resistor R3; the emitter of the transistor V3 is connected with the negative output end of the LC filter circuit, the base of the transistor V3 is connected with the collector of the transistor V4 through the resistor R2 and the emitter of the transistor V1, the emitter of the transistor V4 is connected with the negative output end of the LC filter circuit, the base of the transistor V4 is connected with the anode of the voltage regulator tube V2 and one end of the capacitor C2 through the current-limiting resistor R5, the cathode of the voltage regulator tube V2 is connected with the collector of the transistor V1, the other end of the capacitor C2 is connected with the negative output end of the LC filter circuit, the resistor R1 is connected with the emitter and the base of the transistor V1, and the resistor R6 is connected with the emitter and the base of the transistor V4.
3. The power supply voltage stabilization integration circuit of claim 2, wherein: the transistor V1 is a PNP type triode.
4. The power supply voltage stabilization integration circuit of claim 2, wherein: the transistor V1 is a PMOS tube.
5. The power supply voltage stabilization integration circuit of claim 2, wherein: the transistors V3 and V4 are both NPN type triodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110644947.6A CN113346749A (en) | 2021-06-09 | 2021-06-09 | Power supply voltage stabilization integrating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110644947.6A CN113346749A (en) | 2021-06-09 | 2021-06-09 | Power supply voltage stabilization integrating circuit |
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| Publication Number | Publication Date |
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| CN113346749A true CN113346749A (en) | 2021-09-03 |
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| CN202110644947.6A Pending CN113346749A (en) | 2021-06-09 | 2021-06-09 | Power supply voltage stabilization integrating circuit |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060212737A1 (en) * | 2005-03-15 | 2006-09-21 | Anuag Chandra | Combination feedback controller and power regulator using same |
| CN203434856U (en) * | 2013-07-31 | 2014-02-12 | 青岛海信移动通信技术股份有限公司 | Power-switching circuit and vehicle power supply |
| CN106972746A (en) * | 2016-01-13 | 2017-07-21 | 厦门雅迅网络股份有限公司 | A kind of device for being used to suppress the vibration of vehicle intelligent terminal power-supply system |
| CN111614281A (en) * | 2020-05-09 | 2020-09-01 | 上海紫通信息科技有限公司 | Novel low-voltage high-frequency band inverter circuit |
| CN112600456A (en) * | 2021-01-12 | 2021-04-02 | 新阳荣乐(上海)汽车电子有限公司 | Circuit structure for designing and realizing vehicle-mounted inverter power supply system |
-
2021
- 2021-06-09 CN CN202110644947.6A patent/CN113346749A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060212737A1 (en) * | 2005-03-15 | 2006-09-21 | Anuag Chandra | Combination feedback controller and power regulator using same |
| CN203434856U (en) * | 2013-07-31 | 2014-02-12 | 青岛海信移动通信技术股份有限公司 | Power-switching circuit and vehicle power supply |
| CN106972746A (en) * | 2016-01-13 | 2017-07-21 | 厦门雅迅网络股份有限公司 | A kind of device for being used to suppress the vibration of vehicle intelligent terminal power-supply system |
| CN111614281A (en) * | 2020-05-09 | 2020-09-01 | 上海紫通信息科技有限公司 | Novel low-voltage high-frequency band inverter circuit |
| CN112600456A (en) * | 2021-01-12 | 2021-04-02 | 新阳荣乐(上海)汽车电子有限公司 | Circuit structure for designing and realizing vehicle-mounted inverter power supply system |
Non-Patent Citations (1)
| Title |
|---|
| 王军成、杨旭红、王严龙: "Boost电路稳压输出的变系数模糊积分控制", 计算机测量与控制, vol. 23, no. 4, pages 1186 - 1188 * |
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