CN201557051U - Multifunctional power adapter - Google Patents
Multifunctional power adapter Download PDFInfo
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- CN201557051U CN201557051U CN200920270504XU CN200920270504U CN201557051U CN 201557051 U CN201557051 U CN 201557051U CN 200920270504X U CN200920270504X U CN 200920270504XU CN 200920270504 U CN200920270504 U CN 200920270504U CN 201557051 U CN201557051 U CN 201557051U
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Abstract
The utility model relates to a direct current power supply, in particular to a multifunctional power adapter which can be applied in various digital products. The multifunctional power adapter comprises an AC input EMI filter and lightning-stroke protection surge inhibition circuit, an input rectification and filter circuit, a PWM power conversion circuit, an output rectification filter circuit, a PWM control circuit, a VCC power supply circuit for supplying electricity for the adapter, an output voltage stabilizing circuit, an overcurrent protection circuit and a protection circuit, wherein the output rectification filter circuit is further connected with a USB output unit, and the VC Cower supply circuit is a linear voltage stabilizing structure. The multifunctional power adapter is enabled to output stable direct current voltage between the wide voltage range of 4.2V-24V through improving an IC power supply circuit, a VCC power supply circuit, an output voltage stabilizing portion and a USB power supply unit, and is convenient for the use requirements of different digital products.
Description
Technical field
The utility model relates to the DC power supply field, a kind of multifunctional power adapter that can be applied to multiple digital product of saying so more specifically.
Background technology
At present, we have entered the digital electric epoch, people have a lot of digital product of mobile phone, digital camera, notebook, MP4 usually, yet, the supply voltage of each digital product is not quite similar, and so just makes us must be equipped with a plurality of power supplys, this some trouble that seems for pursuing fast and easily people, especially for the people that go out, except will be with must be a lot of digital products with going up a lot of charger or power supplys.Therefore, people's serious hope has the power supply adaptor of a general-purpose to can be used as the charger or the power supply of various digital products, and still, because the input voltage of various digital products differs bigger, traditional design is difficult to ensure the stability of output voltage.
The utility model content
For addressing the above problem, the purpose of this utility model provides a kind of use multifunctional power adapter more easily.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of multifunctional power adapter; constitute by AC input EMI filtering and anti-thunderbolt/surge restraint circuit, input rectifying and filter circuit, pwm power change-over circuit, output rectifier and filter, pwm control circuit, VCC power supply circuits, output voltage stabilizing circuit and current foldback circuit and the protective circuit circuit of powering for the adapter master chip; described output rectifier and filter also connects a USB output unit, and described VCC power supply circuits are the linear voltage stabilization structure.
Preferably, the linear voltage stabilization structure of described VCC power supply circuits is by diode D3, electrochemical capacitor E2, resistance R 9, voltage stabilizing didoe Z2, triode Q2, electrochemical capacitor E3 constitutes, the positive pole of described diode D3 is connected with the transformer feedback winding, the negative pole of described diode D3 is electrically connected with the emitter of triode Q2, the positive pole of described electrochemical capacitor E2, the minus earth of described electrochemical capacitor E2, described resistance R 9 is attempted by between triode Q2 base stage and the emitter, the negative pole of described voltage stabilizing didoe Z2 is electrically connected with triode Q2, the plus earth of described voltage stabilizing didoe Z2, the collector electrode of described triode Q2 is connected with the positive electrical of electrochemical capacitor E3, the minus earth of described electrochemical capacitor E3, the collector electrode of described triode Q2 is electrically connected with the supply pin of adapter master chip.
Preferably, described USB output unit is made of USB circuit for power conversion and USB control circuit, and the output voltage of described USB circuit for power conversion is to export a winding that superposes on the winding by the transformer master to provide.
Preferably, described USB output unit is by diode 2D1, electrochemical capacitor 2E1, diode 2D2, inductance 2L1, resistance 2R1, chip 2U1, electrochemical capacitor 2E2 and voltage stabilizing didoe 2Z1 constitute, the positive pole of described diode 2D1 is electrically connected with the Transformer Winding positive voltage terminal, the negative pole of described diode 2D1 is electrically connected with first pin of chip 2U1, the positive pole of described electrochemical capacitor 2E1 is connected with the negative electricity of diode 2D1, the negative pole of described electrochemical capacitor 2E1 is electrically connected with the Transformer Winding negative voltage side, the negative pole of described diode 2D2 is electrically connected with the crus secunda of chip 2U1, the negative pole of described diode 2D2 be electrically connected, described inductance 2L1 one end is connected with the negative electricity of diode 2D2, the other end of described inductance 2L1 is connected with the positive electrical of electrochemical capacitor 2E2, the minus earth of described electrochemical capacitor 2E2, the end of described resistance 2R1 is electrically connected with the 4th pin of chip 2U1, the other end of described resistance 2R1 is connected with the positive electrical of electrochemical capacitor 2E2, the the 3rd and the 5th pin ground connection of described chip 2U1, described voltage stabilizing didoe 2Z1 anodal be electrically connected, the negative pole of described voltage stabilizing didoe 2Z1 is connected with the positive electrical of electrochemical capacitor 2E2.
Preferably, described output voltage stabilizing circuit is by diode D7-1, capacitor C 14, resistance R 19, resistance R 20, optocoupler U3, diode D6, diode D7-2, resistance R 21 and capacitor C 8 constitute, the positive pole of described diode D7-1 connects+and the 5V negative pole is electrically connected with VCC, described capacitor C 14 is attempted by VCC and Vout-two ends, the negative pole of described diode D7-2 is electrically connected with VCC, the positive pole of described diode D7-2 is electrically connected with Vout+, described resistance R 21 capacitor C 8 series connection backs are electrically connected in ground, described resistance R 20 1 ends are connected with the negative pole of diode D7-2, described resistance R 20 1 ends are connected with the positive electrical of diode D6, described resistance R 19 1 ends are electrically connected with VCC, the other end of described resistance R 19 be connected on the positive pole of diode D6 after optocoupler U3 connects.
The utility model is being taked linear voltage stabilization aspect the VCC of the IC power supply, we power to voltage of voltage regulation and have taked two groups of supply power modes in output voltage stabilizing part simultaneously, so just can guarantee output voltage stable output in so on a large scale, simultaneously, the utility model also has 5V USB output, and when our main output is worked in wide region so, cause USB output undesired easily, so we have taked the method for voltage stack, added individual winding exactly, stack up with master's output, assurance USB output is so being exported normally in the wide region.
The utility model is by to the improvement with the USB power supply unit of IC power supply circuits-VCC power supply circuits, output voltage stabilizing part, makes them can be from the stable DC voltage output of 4.2V-24V wide-voltage range, convenient different digital product user demands.
Description of drawings
Fig. 1 is the structured flowchart of the utility model embodiment one;
Fig. 2 is the utility model VCC power supply circuit;
Fig. 3 is that this uses novel USB element circuit figure;
Fig. 4 is the utility model output voltage stabilizing circuit figure.
Embodiment
Below in conjunction with drawings and the specific embodiments the utility model will be further described explanation.
Embodiment one:
As shown in Figure 1; the utility model discloses a kind of multifunctional power adapter; by AC input EMI filtering and anti-thunderbolt/surge restraint circuit; input rectifying and filter circuit; the pwm power change-over circuit; output rectifier and filter; pwm control circuit; VCC power supply circuits for the power supply of adapter master chip; output voltage stabilizing circuit and current foldback circuit and protective circuit circuit constitute; described VCC power supply circuits are the linear voltage stabilization structure; described output rectifier and filter also connects a USB output unit; described USB output unit is made of USB circuit for power conversion and USB control circuit, and the output voltage of described USB circuit for power conversion is to export a winding that superposes on the winding by the transformer master to provide.
As shown in Figure 1; AC input EMI filtering is connected with the AC input with anti-thunderbolt/surge restraint circuit; described input rectifying is connected AC input EMI filtering and anti-thunderbolt/surge restraint circuit and pwm power change-over circuit with filter circuit; the output of described pwm power change-over circuit is connected with output rectifier and filter; the output of described output rectifier and filter is as main output of the present utility model; pwm control circuit is connected with the pwm power change-over circuit; VCC power supply circuits and protective circuit are connected on the pwm control circuit; described output voltage stabilizing and current foldback circuit are connected across on main output and the pwm control circuit; described USB circuit for power conversion is connected with output rectifier and filter; described USB circuit for power conversion is attempted by main output, and described USB control circuit is connected on the USB circuit for power conversion.
As shown in Figure 2, the linear voltage stabilization structure of described VCC power supply circuits is by diode D3, electrochemical capacitor E2, resistance R 9, voltage stabilizing didoe Z2, triode Q2, electrochemical capacitor E3 constitutes, the positive pole of described diode D3 is connected with the transformer feedback winding, the negative pole of described diode D3 is electrically connected with the emitter of triode Q2, the positive pole of described electrochemical capacitor E2, the minus earth of described electrochemical capacitor E2, described resistance R 9 is attempted by between triode Q2 base stage and the emitter, the negative pole of described voltage stabilizing didoe Z2 is electrically connected with triode Q2, the plus earth of described voltage stabilizing didoe Z2, the collector electrode of described triode Q2 is connected with the positive electrical of electrochemical capacitor E3, the minus earth of described electrochemical capacitor E3, the collector electrode of described triode Q2 is electrically connected with the supply pin of adapter master chip.
As shown in Figure 3, described USB output unit is by diode 2D1, electrochemical capacitor 2E1, diode 2D2, inductance 2L1, resistance 2R1, chip 2U1, electrochemical capacitor 2E2 and voltage stabilizing didoe 2Z1 constitute, the positive pole of described diode 2D1 is electrically connected with the Transformer Winding positive voltage terminal, the negative pole of described diode 2D1 is electrically connected with first pin of chip 2U1, the positive pole of described electrochemical capacitor 2E1 is connected with the negative electricity of diode 2D1, the negative pole of described electrochemical capacitor 2E1 is electrically connected with the Transformer Winding negative voltage side, the negative pole of described diode 2D2 is electrically connected with the crus secunda of chip 2U1, the negative pole of described diode 2D2 be electrically connected, described inductance 2L1 one end is connected with the negative electricity of diode 2D2, the other end of described inductance 2L1 is connected with the positive electrical of electrochemical capacitor 2E2, the minus earth of described electrochemical capacitor 2E2, the end of described resistance 2R1 is electrically connected with the 4th pin of chip 2U1, the other end of described resistance 2R1 is connected with the positive electrical of electrochemical capacitor 2E2, the the 3rd and the 5th pin ground connection of described chip 2U1, described voltage stabilizing didoe 2Z1 anodal be electrically connected, the negative pole of described voltage stabilizing didoe 2Z1 is connected with the positive electrical of electrochemical capacitor 2E2.
As shown in Figure 4, described output voltage stabilizing circuit is by diode D7-1, capacitor C 14, resistance R 19, resistance R 20, optocoupler U3, diode D6, diode D7-2, resistance R 21 and capacitor C 8 constitute, the positive pole of described diode D7-1 connects+and the 5V negative pole is electrically connected with VCC, described capacitor C 14 is attempted by VCC and Vout-two ends, the negative pole of described diode D7-2 is electrically connected with VCC, the positive pole of described diode D7-2 is electrically connected with Vout+, described resistance R 21 capacitor C 8 series connection backs are electrically connected in ground, described resistance R 20 1 ends are connected with the negative pole of diode D7-2, described resistance R 20 1 ends are connected with the positive electrical of diode D6, described resistance R 19 1 ends are electrically connected with VCC, the other end of described resistance R 19 be connected on the positive pole of diode D6 after optocoupler U3 connects.
Output voltage of the present utility model is 4.2V-24V, and the utility model adopts the feedback winding of transformer to give constant power voltage supply of PWM IC after linear voltage stabilizing.Through the biasing resistor of the AZ431 that change output make output voltage can be in the scope of 4.2V-24V the output of the variable arbitrarily and normal 5V/1A of maintenance in USB place: USB is at the main winding that superposes on the winding of exporting, when main output is 4.2V, the many voltage of 3V is also arranged on the USB winding, the common 7V that stacks up is many, makes USB 5V output unaffected by DC-DC step-down control; When main output is 24V, the voltage of nearly 16V is arranged on the USB winding, make USB keep 5V output by DC-DC step-down control.
The utility model has the segmentation restriction by changing different conversion head output currents, can be widely used in powering to digital class battery charge with to notebook computer.
In a word; above-described only is the preferred implementation of a kind of multifunctional power adapter of the utility model; should be understood that; for the person of ordinary skill of the art; under the prerequisite that does not break away from the utility model creation design; can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (5)
1. multifunctional power adapter; constitute by AC input EMI filtering and anti-thunderbolt/surge restraint circuit, input rectifying and filter circuit, pwm power change-over circuit, output rectifier and filter, pwm control circuit, VCC power supply circuits, output voltage stabilizing circuit and current foldback circuit and the protective circuit circuit of powering for the adapter master chip; it is characterized in that described output rectifier and filter also connects a USB output unit, described VCC power supply circuits are the linear voltage stabilization structure.
2. a kind of multifunctional power adapter according to claim 1, the linear voltage stabilization structure that it is characterized in that described VCC power supply circuits is by diode D3, electrochemical capacitor E2, resistance R 9, voltage stabilizing didoe Z2, triode Q2, electrochemical capacitor E3 constitutes, the positive pole of described diode D3 is connected with the transformer feedback winding, the negative pole of described diode D3 is electrically connected with the emitter of triode Q2, the positive pole of described electrochemical capacitor E2, the minus earth of described electrochemical capacitor E2, described resistance R 9 is attempted by between triode Q2 base stage and the emitter, the negative pole of described voltage stabilizing didoe Z2 is electrically connected with triode Q2, the plus earth of described voltage stabilizing didoe Z2, the collector electrode of described triode Q2 is connected with the positive electrical of electrochemical capacitor E3, the minus earth of described electrochemical capacitor E3, the collector electrode of described triode Q2 is electrically connected with the supply pin of adapter master chip.
3. a kind of multifunctional power adapter according to claim 1, it is characterized in that described USB output unit is made of USB circuit for power conversion and USB control circuit, the output voltage of described USB circuit for power conversion is to export a winding that superposes on the winding by the transformer master to provide.
4. a kind of multifunctional power adapter according to claim 3, it is characterized in that described USB output unit is by diode 2D1, electrochemical capacitor 2E1, diode 2D2, inductance 2L1, resistance 2R1, chip 2U1, electrochemical capacitor 2E2 and voltage stabilizing didoe 2Z1 constitute, the positive pole of described diode 2D1 is electrically connected with the Transformer Winding positive voltage terminal, the negative pole of described diode 2D1 is electrically connected with first pin of chip 2U1, the positive pole of described electrochemical capacitor 2E1 is connected with the negative electricity of diode 2D1, the negative pole of described electrochemical capacitor 2E1 is electrically connected with the Transformer Winding negative voltage side, the negative pole of described diode 2D2 is electrically connected with the crus secunda of chip 2U1, the negative pole of described diode 2D2 be electrically connected, described inductance 2L1 one end is connected with the negative electricity of diode 2D2, the other end of described inductance 2L1 is connected with the positive electrical of electrochemical capacitor 2E2, the minus earth of described electrochemical capacitor 2E2, the end of described resistance 2R1 is electrically connected with the 4th pin of chip 2U1, the other end of described resistance 2R1 is connected with the positive electrical of electrochemical capacitor 2E2, the the 3rd and the 5th pin ground connection of described chip 2U1, described voltage stabilizing didoe 2Z1 anodal be electrically connected, the negative pole of described voltage stabilizing didoe 2Z1 is connected with the positive electrical of electrochemical capacitor 2E2.
5. a kind of multifunctional power adapter according to claim 1, it is characterized in that described output voltage stabilizing circuit is by diode D7-1, capacitor C 14, resistance R 19, resistance R 20, optocoupler U3, diode D6, diode D7-2, resistance R 21 and capacitor C 8 constitute, the positive pole of described diode D7-1 connects+and the 5V negative pole is electrically connected with VCC, described capacitor C 14 is attempted by VCC and Vout-two ends, the negative pole of described diode D7-2 is electrically connected with VCC, the positive pole of described diode D7-2 is electrically connected with Vout+, described resistance R 21 capacitor C 8 series connection backs are electrically connected in ground, described resistance R 20 1 ends are connected with the negative pole of diode D7-2, described resistance R 20 1 ends are connected with the positive electrical of diode D6, described resistance R 19 1 ends are electrically connected with VCC, the other end of described resistance R 19 be connected on the positive pole of diode D6 after optocoupler U3 connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920270504XU CN201557051U (en) | 2009-11-17 | 2009-11-17 | Multifunctional power adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920270504XU CN201557051U (en) | 2009-11-17 | 2009-11-17 | Multifunctional power adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201557051U true CN201557051U (en) | 2010-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920270504XU Expired - Fee Related CN201557051U (en) | 2009-11-17 | 2009-11-17 | Multifunctional power adapter |
Country Status (1)
| Country | Link |
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| CN (1) | CN201557051U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255368A (en) * | 2011-07-14 | 2011-11-23 | 无锡新畅电子有限公司 | High-power-factor quick charger for lithium iron phosphate battery |
| CN106100083A (en) * | 2016-02-05 | 2016-11-09 | 广东欧珀移动通信有限公司 | Anti-lightning strike guard method when charging system, charging and power supply adaptor |
| CN107994785A (en) * | 2017-12-08 | 2018-05-04 | 安徽泰德电子科技有限公司 | A kind of polarity automatic conversion voltage stabilizing control circuit |
| CN109995252A (en) * | 2019-04-22 | 2019-07-09 | 合肥惠科金扬科技有限公司 | A kind of voltage regulator circuit and switching power circuit |
-
2009
- 2009-11-17 CN CN200920270504XU patent/CN201557051U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255368A (en) * | 2011-07-14 | 2011-11-23 | 无锡新畅电子有限公司 | High-power-factor quick charger for lithium iron phosphate battery |
| CN106100083A (en) * | 2016-02-05 | 2016-11-09 | 广东欧珀移动通信有限公司 | Anti-lightning strike guard method when charging system, charging and power supply adaptor |
| CN106100083B (en) * | 2016-02-05 | 2017-11-24 | 广东欧珀移动通信有限公司 | Anti-lightning strike guard method and power supply adaptor when charging system, charging |
| CN107994785A (en) * | 2017-12-08 | 2018-05-04 | 安徽泰德电子科技有限公司 | A kind of polarity automatic conversion voltage stabilizing control circuit |
| CN109995252A (en) * | 2019-04-22 | 2019-07-09 | 合肥惠科金扬科技有限公司 | A kind of voltage regulator circuit and switching power circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20181117 |