CN2553414Y - PWM type high frenquency switch power supply constant voltage/constant current controller - Google Patents
PWM type high frenquency switch power supply constant voltage/constant current controller Download PDFInfo
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- CN2553414Y CN2553414Y CN 02240021 CN02240021U CN2553414Y CN 2553414 Y CN2553414 Y CN 2553414Y CN 02240021 CN02240021 CN 02240021 CN 02240021 U CN02240021 U CN 02240021U CN 2553414 Y CN2553414 Y CN 2553414Y
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- voltage
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Abstract
The utility model relates to a PWM typed high frequency switch power supply constant voltage and constant current controller. Wherein, an antiphase end of a voltage comparator is connected with a feedback voltage. A homophase end is connected with a set voltage. A feedback circuit which comprises a resistance and a capacitance is connected between the output end and the antiphase end. An antiphase end of a current comparator is connected with a feedback current. A homophase end is connected with a set current. A feedback circuit which comprises a resistance and a capacitance is connected between the output end and the antiphase end. The output ends of the voltage comparator and the current comparator are connected together. The output ends are connected with a voltage reference through a pull-up resistance, connected with the ground through a capacitance and connected with the input end of a triangular wave comparator of the PWM chip. The controller adopts the structure of parallel connection of voltage and current double control ring. When working in the constant voltage condition, the voltage ring works. When reaching the constant current point, the controller is automatically cut over to the constant current working condition and the current ring works. Therefore, the precision of voltage regulation and current regulation is enhanced.
Description
Technical field
The utility model relates to a kind of power-supply controller of electric, and particularly a kind of constant voltage/constant current controller that is applied to PWM type high frequency switch power belongs to power technique fields.
Background technology
Along with the development of switch power technology, high frequency switch power is used widely in the communications field.Communication, also needs accumulator is charged except that being the power devices with Switching Power Supply.The charging of battery behavior decision need carrying out constant current/constant voltage.General now pressure regulation current-limiting mode or the employing current limliting comparer of adopting closed PWM chip output pulse.Adopt these modes, precision of steady current is lower, and the higher low-frequency ripple of output stack amplitude easily exerts an influence to battery life during current limliting.
Summary of the invention
The purpose of this utility model is to provide a kind of novel Switching Power Supply constant voltage/constant current controller, adopt voltage, the two control loop parallel-connection structures of electric current, when being operated in pressure constant state, Voltage loop works, after arriving constant current point, automatically switch to constant current state work, electric current loop works, thereby improves voltage stabilizing, the precision of steady current of controller.
For realizing above-mentioned goal of the invention, the utility model adopts following technical scheme:
A kind of PWM type high frequency switch power constant voltage/constant current controller comprises voltage comparator, current comparator, resistance, electric capacity, it is characterized in that:
The anti-phase termination feedback voltage of described voltage comparator, homophase termination setting voltage, the feedback circuit that connecting resistance and electric capacity are formed between output terminal and the end of oppisite phase; The anti-phase termination feedback current of described current comparator, the homophase termination is set electric current, the feedback circuit that connecting resistance and electric capacity are formed between output terminal and the end of oppisite phase; The output terminal of voltage comparator and current comparator is connected together, and connects reference voltage through pull-up resistor, through capacity earth, and is connected with the input end of triangular wave comparer in the PWM chip.
Switching Power Supply constant voltage/constant current controller described in the utility model adopts cheap versatility comparer, can constitute constant voltage/constant current type Switching Power Supply based on multiple PWM chip, and is simple in structure, voltage stabilizing, precision of steady current height.Can set different charging curves according to battery behavior, realize battery charge control easily, also can be used as general constant voltage or constant current source and use.Interfere with each other owing to adopting the dual comparator structure, can not producing substantially during transition.
Description of drawings
Fig. 1 is the circuit theory diagrams of Switching Power Supply constant voltage/constant current controller described in the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done an into explanation that relates to.
As shown in Figure 1, wherein Vset, Iset are respectively setting voltage and set electric current, and Vout, Iout are respectively feedback voltage and feedback current.Comparer U1B, U2B are for constituting the pi regulator of Voltage loop and electric current loop respectively.Wherein the inverting input of voltage comparator U1B meets Vout through resistance R 11, in-phase input end meets Vset through R6, and is connected to the mu balanced circuit of C7 in parallel and R7 composition, resistance R 1 and capacitor C 2 series connection, and in parallel with capacitor C 12, be connected between the inverting input and output terminal of comparer U1B; The inverting input of current comparator U2B meets Iout through resistance R 9, in-phase input end meets Iset through R8, and is connected to the mu balanced circuit of C8 in parallel and R10 composition, resistance R 13 and capacitor C 10 series connection, and in parallel with capacitor C 9, be connected between the inverting input and output terminal of comparer U1B.The output terminal of two comparers is connected together, and is connected to reference voltage V REF by pull-up resistor R12, directly is added in the input end of the triangular wave comparer in the PWM chip.
During circuit working, when Iout＜Iset, comparer U2 is output as height, Voltage loop works, and when Vout is lower than Vset, voltage is high on the capacitor C 11, the pulse broad of PWM chip output, when Vout is higher than Vset, voltage is low on the capacitor C 11, and the pulse of PWM chip output is narrower, form the process of a mobile equilibrium, keep the stable of output voltage, electric current changes with loading condition, works in pressure constant state this moment.When load increases, it is big that output current becomes, when making Iout＞Iset, comparer U2 is output as low, electric current loop works, and voltage step-down on the capacitor C 11 makes the pulse width of output narrow down, output voltage reduces, keep the stable of electric current, output voltage changes with loading condition, and load is big more, output voltage is low more, works in constant current state this moment.Output voltage wherein, output current all can be set as required, and when steady operation, Voltage loop and electric current loop have only a ring in work, can not interfere with each other.Though the conditioner outlet end of Voltage loop and electric current loop is connected together, in transient process, particularly when switching between two rings, can form certain phase mutual interference, but owing to adopt dual comparator, this interference meeting is very little, can guarantee the circuit steady operation.
Need to prove; particular of the present utility model is described in detail the utility model; for a person skilled in the art, in the various conspicuous change of under the situation that does not deviate from spirit and scope of the present utility model it being carried out all within protection domain of the present utility model.
Claims (3)
1. a PWM type high frequency switch power constant voltage/constant current controller comprises voltage comparator, current comparator, resistance, electric capacity, it is characterized in that:
The anti-phase termination feedback voltage of described voltage comparator, homophase termination setting voltage, the feedback circuit that connecting resistance and electric capacity are formed between output terminal and the end of oppisite phase; The anti-phase termination feedback current of described current comparator, the homophase termination is set electric current, the feedback circuit that connecting resistance and electric capacity are formed between output terminal and the end of oppisite phase; The output terminal of voltage comparator and current comparator is connected together, and connects reference voltage through pull-up resistor, through capacity earth, and is connected with the input end of triangular wave comparer in the PWM chip.
2. in the PWM type high frequency switch power constant voltage/constant current controller as claimed in claim 1, the feedback circuit that described voltage comparator and current comparator connect is formed in parallel by the circuit of an electric capacity and another resistance and capacitance series.
3. in the PWM type high frequency switch power constant voltage/constant current controller as claimed in claim 1, in-phase end all is connected to the mu balanced circuit of parallel resistor and electric capacity composition in described voltage comparator and the current comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240021 CN2553414Y (en) | 2002-07-05 | 2002-07-05 | PWM type high frenquency switch power supply constant voltage/constant current controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02240021 CN2553414Y (en) | 2002-07-05 | 2002-07-05 | PWM type high frenquency switch power supply constant voltage/constant current controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2553414Y true CN2553414Y (en) | 2003-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02240021 Expired - Fee Related CN2553414Y (en) | 2002-07-05 | 2002-07-05 | PWM type high frenquency switch power supply constant voltage/constant current controller |
Country Status (1)
| Country | Link |
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| CN (1) | CN2553414Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356658C (en) * | 2005-10-27 | 2007-12-19 | 华为技术有限公司 | Circuit system for providing stable voltage variable constant current output |
| CN1702587B (en) * | 2004-05-13 | 2010-04-14 | 马维尔国际贸易有限公司 | Voltage regulator with high output impedance generator |
| US7883808B2 (en) | 2005-09-30 | 2011-02-08 | Hitachi, Ltd. | Power supply apparatus with fuel cell and method of controlling the same |
| CN103618366A (en) * | 2013-11-22 | 2014-03-05 | 镇江赛尔尼柯自动化有限公司 | Intelligent ship charging machine and charging method |
| CN105259968A (en) * | 2015-11-27 | 2016-01-20 | 上海空间电源研究所 | Wide voltage output parallel flexible switching device and switching method thereof |
| CN105938097A (en) * | 2016-04-15 | 2016-09-14 | 成都以太航空保障工程技术有限责任公司 | Multi-element oil liquid analysis system based on CCD polychromator |
| CN106849304A (en) * | 2017-03-30 | 2017-06-13 | 长沙云涯电子科技有限责任公司 | A kind of lead acid battery charge circuit |
| CN106873043A (en) * | 2017-04-14 | 2017-06-20 | 吉林大学 | The shallow earth's surface magnetic source emitter and its control method of a kind of double-loop feedbackc |
| CN109194146A (en) * | 2018-11-21 | 2019-01-11 | 西安埃克森电源有限公司 | A kind of variable-frequency power sources constant pressure and flow seamless switching technique method |
-
2002
- 2002-07-05 CN CN 02240021 patent/CN2553414Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1702587B (en) * | 2004-05-13 | 2010-04-14 | 马维尔国际贸易有限公司 | Voltage regulator with high output impedance generator |
| CN1696859B (en) * | 2004-05-13 | 2010-06-02 | 马维尔国际贸易有限公司 | Voltage regulator for separately obtaining pull-up voltage |
| US7883808B2 (en) | 2005-09-30 | 2011-02-08 | Hitachi, Ltd. | Power supply apparatus with fuel cell and method of controlling the same |
| CN100356658C (en) * | 2005-10-27 | 2007-12-19 | 华为技术有限公司 | Circuit system for providing stable voltage variable constant current output |
| CN103618366A (en) * | 2013-11-22 | 2014-03-05 | 镇江赛尔尼柯自动化有限公司 | Intelligent ship charging machine and charging method |
| CN105259968A (en) * | 2015-11-27 | 2016-01-20 | 上海空间电源研究所 | Wide voltage output parallel flexible switching device and switching method thereof |
| CN105259968B (en) * | 2015-11-27 | 2017-01-18 | 上海空间电源研究所 | Wide voltage output parallel flexible switching device and switching method thereof |
| CN105938097A (en) * | 2016-04-15 | 2016-09-14 | 成都以太航空保障工程技术有限责任公司 | Multi-element oil liquid analysis system based on CCD polychromator |
| CN106849304A (en) * | 2017-03-30 | 2017-06-13 | 长沙云涯电子科技有限责任公司 | A kind of lead acid battery charge circuit |
| CN106873043A (en) * | 2017-04-14 | 2017-06-20 | 吉林大学 | The shallow earth's surface magnetic source emitter and its control method of a kind of double-loop feedbackc |
| CN106873043B (en) * | 2017-04-14 | 2018-10-23 | 吉林大学 | A kind of shallow earth's surface magnetic source transmitter and its control method of double-loop feedbackc |
| CN109194146A (en) * | 2018-11-21 | 2019-01-11 | 西安埃克森电源有限公司 | A kind of variable-frequency power sources constant pressure and flow seamless switching technique method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TONLIER ENERGY TECHNOLOGY (BEIJING) CO., LTD. Free format text: FORMER OWNER: BEIJING TONGLIHUAN ELECTRICAL CO., LTD. Effective date: 20101206 Owner name: TONLIER ENERGY TECHNOLOGY (BEIJING) CO., LTD. Free format text: FORMER OWNER: BEIJING TONGLIHUAN ELECTRICAL CO., LTD. Effective date: 20101202 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 101100 NO.1, FURONG WEST ROAD, DONGGUAN, TONGZHOU DISTRICT, BEIJING TO: 101111 NO.9, KECHUANG STREET 14, BEIJING ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101206 Address after: Branch of Beijing economic and Technological Development Zone of Beijing City, No. 9 14 street 101111 Patentee after: TONLIER ENERGY TECHNOLOGY (BEIJING) Co.,Ltd. Address before: 101100, No. 1 Furong West Road, Dongguan, Beijing, Tongzhou District Patentee before: Beijing Tonlier Electrical Co.,Ltd. Effective date of registration: 20101202 Address after: Branch of Beijing economic and Technological Development Zone of Beijing City, No. 9 14 street 101111 Patentee after: TONLIER ENERGY TECHNOLOGY (BEIJING) Co.,Ltd. Address before: 101100, No. 1 Furong West Road, Dongguan, Beijing, Tongzhou District Patentee before: Beijing Tonlier Electrical Co.,Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030528 Termination date: 20110705 |