CN201781302U - Integrated battery charger and circuit structure of direct current voltage stabilizing power supply - Google Patents
Integrated battery charger and circuit structure of direct current voltage stabilizing power supply Download PDFInfo
- Publication number
- CN201781302U CN201781302U CN2010202966517U CN201020296651U CN201781302U CN 201781302 U CN201781302 U CN 201781302U CN 2010202966517 U CN2010202966517 U CN 2010202966517U CN 201020296651 U CN201020296651 U CN 201020296651U CN 201781302 U CN201781302 U CN 201781302U
- Authority
- CN
- China
- Prior art keywords
- control module
- voltage
- charge pump
- power supply
- leads ends
- 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.)
- Expired - Lifetime
Links
- 230000000087 stabilizing Effects 0.000 title claims abstract description 9
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 25
- WHXSMMKQMYFTQS-UHFFFAOYSA-N lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 23
- 230000001276 controlling effect Effects 0.000 claims abstract description 4
- 230000001105 regulatory Effects 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000004065 semiconductor Substances 0.000 claims description 7
- 230000000875 corresponding Effects 0.000 claims description 5
- 239000003381 stabilizer Substances 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 2
- 150000002641 lithium Chemical class 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
Images
Abstract
The utility model relates to an integrated battery charger and a circuit structure of a direct current voltage stabilizing power supply. A charge pump control module is set to a one-time switching mode for carrying out charging or is set into (1.5-time) 2-time or 0.5-time switching mode for carrying out voltage boosting and voltage reduction, charging/voltage transfer signals are detected through a logic control module, a driving feedback control module selects the voltage on the second lead pin end or the first lead pin end, and feeds back and outputs the voltage to a linear control module, the conduction of a transistor is controlled by the linear control module, linear charging is carried out from the external power supply of the first lead pin end to a lithium battery of the second lead pin end, or the voltage is stabilized through a low-voltage-difference voltage stabilizer formed through controlling the transistor via the linear control module, and a direct current voltage stabilizing source higher than or lower than the voltage of the battery is correspondingly obtained at the first lead pin end. The utility model realizes the integration of a lithium battery charger and a direct current voltage boosting and reducing conversation and voltage stabilizer, the arrangement of the additional circuits and separated elements can be effectively reduced, and the complexity of a system is simplified, so the size of the system is reduced, and the system cost and the encapsulating test cost can be reduced.
Description
Technical field
The utility model relates to a kind of power-supply system of semiconductor integrated circuit, the circuit structure of particularly a kind of integrated battery charger and D.C. regulated power supply.
Background technology
Be being extensive use of of device of power supply along with mobile phone, MP3 and MP4 etc., become more and more important for the power management of those handheld devices with the battery.At present these class handheld devices many by lithium battery as power supply, its output voltage generally at 2.7V to 4.2V; And the transfer of data of handheld devices and signal controlling usually require to be higher than this lithium battery output voltage, stable power voltage.Therefore, many manufacturers often independently are provided with a battery charger, voltage transitions and pressurizer, be embodied as the lithium cell charging of handheld devices respectively and the stabilized voltage power supply that is higher than cell voltage function is provided.
As shown in Figure 1, be existing a kind of linear charger of lithium cell charging that is, the external working power of its input VIN, and be connected to Linear Control module 11 and transistor M1 respectively.Lithium battery 12 positive poles are connected with transistor M1 at battery-end VBAT, and output voltage feeds back to Linear Control module 11.Linear Control module 11 is come oxide-semiconductor control transistors M1 conducting by the Voltage Feedback of this lithium battery 12, and transistor M1 is carried out current detecting, realizes charging to lithium battery 12 with this.At this moment, lithium battery 12 can be directly for the load that connects provides electrical power, or provide the electrical power that is higher or lower than cell voltage for load by transducer.
As shown in Figure 2, be existing a kind of charge pump stabilized voltage supply device, it can be connected with Fig. 1 neutral line charger as direct voltage conversion and pressurizer.Connect lithium battery 12 positive poles at battery-end VBAT, battery-end VBAT voltage that is detected by charge pump control module 22 and the divider resistance R1 that receives, the control of the last Voltage Feedback of R2 are higher than the output voltage of battery-end VBAT cell voltage in output VOUT acquisition.This output VOUT also is connected with a Linear Control module 23, make output voltage and divider resistance R1, the R2 last voltage FEEDBACK CONTROL of Linear Control module 23 by above-mentioned charge pump control module 22, driving transistors M1 adjusts pressure drop, thereby can obtain to be higher than the direct-flow voltage regulation source of battery-end VBAT cell voltage on electric capacity and load RL.
In the above-mentioned charge pump stabilized voltage supply device, Linear Control module 23 and transistor M1 can be realized by low pressure difference linear voltage regulator (LDO).In addition, switch, can obtain to be higher than the output voltage of 1.5 times of cell voltages or 2 times at output VOUT, thereby be widely used in the mobile phone white light driver by charge pump control module 22.
Yet, above-mentionedly be connected with the voltage transitions pressurizer by battery charger, be respectively battery charge and the system design of the stabilized voltage power supply that is higher than cell voltage is provided, more adjunct circuit and discrete component need be set, the circuit structure complexity, increase system cost and volume simultaneously, thereby can not be applicable to handheld devices well.
The utility model content
The purpose of this utility model provides the circuit structure of a kind of integrated battery charger and D.C. regulated power supply, can realize the conversion that battery charge and voltage up-down are pressed, reduce adjunct circuit and discrete component, thereby simplied system structure reduces system cost and volume.
In order to achieve the above object, the technical solution of the utility model provides the circuit structure of a kind of integrated battery charger and D.C. regulated power supply, can be operated in respectively under charging or the voltage transitions state, and it is provided with the first leads ends VIO and the second leads ends VBAT; Also comprise feedback control module, and charge pump control module that is connected with feedback control module respectively and Linear Control module; The described first leads ends VIO under charging or voltage transitions state, is connected with external power source or load respectively; The described second leads ends VBAT is connected with described charge pump control module, described feedback control module and the lithium battery of outside respectively.
The circuit structure of described integrated battery charger and D.C. regulated power supply also comprises the Logic control module that is connected with feedback control module; By charging/voltage transitions signal controlling that described Logic control module detects, make described feedback control module, charge pump control module and Linear Control module work in charging or voltage transitions state.
The circuit structure of described integrated battery charger and D.C. regulated power supply also comprises transistor, and it is arranged between described first leads ends VIO and the charge pump control module, and its control end also is connected with the Linear Control module.
Described Linear Control module also is provided with the connection lead-in wire and is connected with described transistor, obtains the data of current detecting from described transistor.
The circuit structure of described integrated battery charger and D.C. regulated power supply also comprises divider resistance R1, the R2 of series connection; Described divider resistance R1 also is connected with the first leads ends VIO, and is being connected with the Linear Control module with the series connection node of divider resistance R2; Described divider resistance R2 also is connected with ground.
Described charge pump control module is that the switch multiple is adjustable; By adjusting this switch multiple, the output voltage of described charge pump control module is equaled, be higher or lower than its input voltage, and be the corresponding multiple of this input voltage, so that described charge pump control module is operated in charging respectively, boosts or the different conditions of step-down conversion.
When described Logic control module detects charging signals, adjust the switch multiple and make described charge pump control module be operated in charged state; Described feedback control module is selected that the described second leads ends VBAT is gone up Voltage Feedback and is exported the Linear Control module to, by described Linear Control module controls transistor turns degree, electrical power from the external power source that the first leads ends VIO connects, is exported to the last lithium battery of the second leads ends VBAT and carries out linear-charging.
When described Logic control module detected the voltage transitions signal, the Voltage Feedback that described feedback control module is selected the first leads ends VIO to be gone up external loading exported Linear Control module, charge pump control module to; Adjust the switch multiple make described charge pump control module obtain the corresponding multiple of cell voltage on the second leads ends VBAT, boost or the output voltage of step-down.
The output voltage of described charge pump control module exports the Linear Control module to by feedback control module, with the Voltage Feedback from described external loading, drives described transistor and adjusts pressure drop, carries out voltage stabilizing.
The circuit structure of the utility model integrated battery charger and D.C. regulated power supply, compared with prior art, its advantage is:
The utility model is provided with 1 times of switching mode by the charge pump control module and charges, or (1.5 times) 2 times is set or 0.5 times of switching mode carries out buck; Detect charging/voltage transitions signal by Logic control module, the drive feedback control module selects the Voltage Feedback on the second leads ends VBAT or the first leads ends VIO to export the Linear Control module to, by its oxide-semiconductor control transistors conducting, carry out linear-charging to the lithium battery of the second leads ends VBAT from the external power supply of the first leads ends VIO; Or carry out voltage stabilizing by the low pressure difference linear voltage regulator (LDO) that Linear Control module controls transistor forms, correspondingly obtaining to be higher or lower than the direct-flow voltage regulation source of cell voltage with the first leads ends VIO.As seen, the utility model has been realized integrated to conversion of lithium battery charger, direct current buck and pressurizer effectively having reduced the setting of adjunct circuit and discrete component, has simplified the complexity of system, thereby can the reduction system volume, reduce system cost and packaging and testing expense.
Description of drawings
Fig. 1 is the electrical block diagram of existing linear charger;
Fig. 2 is the electrical block diagram of existing charge pump stabilized voltage supply device;
Fig. 3 is the structural representation of the circuit structure of the utility model integrated battery charger and D.C. regulated power supply.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model, filled arrows is represented the current direction under the linear-charging pattern in the accompanying drawing, and hollow arrow is represented the current direction under the voltage transitions pattern; Dotted arrow is all represented Voltage Feedback under these two kinds of patterns.
As shown in Figure 3, the circuit structure of the utility model integrated battery charger and D.C. regulated power supply comprises feedback control module 48, and the Logic control module 49 that is connected with feedback control module 48 respectively, charge pump control module 42 and Linear Control module 46.
This integrated circuit (IC) system is provided with the second leads ends VBAT and is connected with the positive pole of lithium battery 12; Also be provided with the first leads ends VIO, under charging or voltage transitions state, be connected with external power source or load respectively.
Wherein, the first leads ends VIO is connected with transistor 43, and is connected with Linear Control module 46 by divider resistance R1, the R2 of series connection.This Linear Control module 46 is connected with the control end of transistor 43, and is provided with the connection lead-in wire in addition, obtains the data of current detecting from transistor 43.This transistor 43 also is connected with the second leads ends VBAT by charge pump control module 42; Also be connected at the second leads ends VBAT with feedback control module 48.Described Linear Control module 46 and transistor 43 can be realized by low pressure difference linear voltage regulator (LDO).
By Logic control module 49 detected charging/voltage transitions signals, Control and Feedback control module 48 is in the charging or the operating state of voltage transitions, respectively with the above-mentioned first leads ends VIO, the second leads ends VBAT as pressure feedback port or working power end.In addition, also drive charge pump control module 42 and change the switch multiple by feedback control module 48, make the output voltage of charge pump control module 42 be respectively 1 times, 1.5 or 2 times, 0.5 times of input voltage, with satisfy system's charging or boost, the different conditions of step-down conversion.
Particularly, when the utility model integrated circuit (IC) system is operated in linear-charging pattern following time, the charging signals of Logic control module 49 is in high potential, drive feedback control module 48 selects the second leads ends VBAT to be connected with lithium battery 12 as pressure feedback port, the first leads ends VIO as working power end, the first leads ends VIO is connected with external power source, export transistor 43 to as charge power supply, also by after the resistance R 1, R2 dividing potential drop as the working power of Linear Control module 46.
Make charge pump control module 42 be in 1 times of switching mode, at this moment, whole system constitutes and the similar linear charger structure of Fig. 1.Linear Control module 46 goes up the Voltage Feedback of lithium battery 12 by the second leads ends VBAT, and the current detecting that transistor 43 is carried out, come the conducting degree of oxide-semiconductor control transistors 43, realize the external power source of electrical power with this, export the linear-charging process that the second leads ends VBAT goes up lithium battery 12 to from the first leads ends VIO.
When native system is operated in voltage transitions pattern following time, the voltage transitions signal of Logic control module 49 places high potential, drive feedback control module 48 selects the second leads ends VBAT that is connected with lithium battery 12 to be connected as pressure feedback port with external loading as working power end, the first leads ends VIO, constitutes and the similar charge pump stabilized voltage supply device of Fig. 2.
At this moment, the first leads ends VIO exports the Voltage Feedback in the load to Linear Control module 46 by divider resistance R1, R2; Export the Voltage Feedback of this load to charge pump control module 42 via feedback control module 48 again.
According to different needs, if charge pump control module 42 is arranged on 1.5 times or 2 times of switching modes, at this moment, the utility model integrated circuit (IC) system is operated in the boost conversion state.By the Voltage Feedback control of cell voltage on the second leads ends VBAT that detects and reception, make on the output of charge pump control module 42 and transistor 43 connections 1.5 times of corresponding acquisitions or 2 times to the output voltage of cell voltage.This output voltage also exports Linear Control module 46 to by feedback control module 48, make Linear Control module 46 by this output voltage and above-mentioned feedback voltage control from load, driving transistors 43 is adjusted pressure drop, be this output voltage voltage stabilizing, make to obtain to be higher than the direct-flow voltage regulation source that the second leads ends VBAT goes up cell voltage in the load that is connected with the first leads ends VIO.
If charge pump control module 42 is arranged on 0.5 times of switching mode, at this moment, the utility model integrated circuit (IC) system is operated in the step-down transition status, it has and the identical workflow of above-mentioned boost conversion state, by 0.5 times of charge pump control module 42 step-downs output cell voltage, carry out voltage stabilizing by Linear Control module 46 driving transistorss 43 again, thus can with load that the first leads ends VIO is connected on obtain half direct-flow voltage regulation source of cell voltage on the second leads ends VBAT.
In addition, in certain embodiments, the Linear Control module 46 of above-mentioned formation low pressure difference linear voltage regulator (LDO) and transistor 43 can also be arranged between described charge pump control module 42 and the lithium battery 12, reduce the high voltage fatigue damage to transistor 43.
In sum, the utility model is provided with 1 times of switching mode by charge pump control module 42 and charges, or (1.5 times) 2 times is set or 0.5 times of switching mode carries out buck; Detect charging/voltage transitions signal by Logic control module 49, drive feedback control module 48 selects the Voltage Feedback on the second leads ends VBAT or the first leads ends VIO to export Linear Control module 46 to, by its oxide-semiconductor control transistors 43 conductings, carry out linear-charging to the lithium battery 12 of the second leads ends VBAT from the external power supply of the first leads ends VIO; Or the low pressure difference linear voltage regulator (LDO) that is formed by Linear Control module 46 oxide-semiconductor control transistors 43 carries out voltage stabilizing, is correspondingly obtaining to be higher or lower than the direct-flow voltage regulation source of cell voltage with the first leads ends VIO.As seen, the utility model has been realized integrated to conversion of lithium battery charger, direct current buck and pressurizer effectively having reduced the setting of adjunct circuit and discrete component, has simplified the complexity of system, thereby can the reduction system volume, reduce system cost and packaging and testing expense.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute all will be conspicuous.Therefore, protection range of the present utility model should be limited to the appended claims.
Claims (9)
1. the circuit structure of integrated battery charger and D.C. regulated power supply is characterized in that, can be operated in respectively under charging or the voltage transitions state, and it is provided with the first leads ends VIO and the second leads ends VBAT; Also comprise feedback control module (48), and charge pump control module (42) that is connected with feedback control module (48) respectively and Linear Control module (46); The described first leads ends VIO under charging or voltage transitions state, is connected with external power source or load respectively; The described second leads ends VBAT is connected with described charge pump control module (42), described feedback control module (48) and the lithium battery (12) of outside respectively.
2. the circuit structure of integrated battery charger as claimed in claim 1 and D.C. regulated power supply is characterized in that, also comprises the Logic control module (49) that is connected with feedback control module (48); By charging/voltage transitions signal controlling that described Logic control module (49) detects, make described feedback control module (48), charge pump control module (42) and Linear Control module (46) work in charging or voltage transitions state.
3. the circuit structure of integrated battery charger as claimed in claim 2 and D.C. regulated power supply, it is characterized in that, also comprise transistor (43), it is arranged between described first leads ends VIO and the charge pump control module (42), and its control end also is connected with Linear Control module (46).
4. the circuit structure of integrated battery charger as claimed in claim 3 and D.C. regulated power supply, it is characterized in that, described Linear Control module (46) also is provided with the connection lead-in wire and is connected with described transistor (43), obtains the data of current detecting from described transistor (43).
5. the circuit structure of integrated battery charger as claimed in claim 3 and D.C. regulated power supply is characterized in that, also comprises divider resistance R1, the R2 of series connection; Described divider resistance R1 also is connected with the first leads ends VIO, and is being connected with Linear Control module (46) with the series connection node of divider resistance R2; Described divider resistance R2 also is connected with ground.
6. the circuit structure of integrated battery charger as claimed in claim 5 and D.C. regulated power supply is characterized in that, described charge pump control module (42) is that the switch multiple is adjustable; By adjusting this switch multiple, make the output voltage of described charge pump control module (42) equal, be higher or lower than its input voltage, and be the corresponding multiple of this input voltage, so that described charge pump control module (42) is operated in charging respectively, boosts or the different conditions of step-down conversion.
7. the circuit structure of integrated battery charger as claimed in claim 6 and D.C. regulated power supply, it is characterized in that, when described Logic control module (49) when detecting charging signals, adjust the switch multiple and make described charge pump control module (42) be operated in charged state; Described feedback control module (48) is selected that the described second leads ends VBAT is gone up Voltage Feedback and is exported Linear Control module (46) to, by described Linear Control module (46) oxide-semiconductor control transistors (43) conducting degree, electrical power from the external power source that the first leads ends VIO connects, is exported to the last lithium battery (12) of the second leads ends VBAT and carries out linear-charging.
8. the circuit structure of integrated battery charger as claimed in claim 6 and D.C. regulated power supply, it is characterized in that, when described Logic control module (49) detected the voltage transitions signal, the Voltage Feedback that described feedback control module (48) is selected the first leads ends VIO to be gone up external loading exported Linear Control module (46), charge pump control module (42) to; Adjust the switch multiple make described charge pump control module (42) obtain the second leads ends VBAT go up the corresponding multiple of cell voltage, boost or the output voltage of step-down.
9. the circuit structure of integrated battery charger as claimed in claim 8 and D.C. regulated power supply, it is characterized in that, the output voltage of described charge pump control module (42) exports Linear Control module (46) to by feedback control module (48), with Voltage Feedback from described external loading, drive described transistor (43) and adjust pressure drop, carry out voltage stabilizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202966517U CN201781302U (en) | 2010-08-19 | 2010-08-19 | Integrated battery charger and circuit structure of direct current voltage stabilizing power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202966517U CN201781302U (en) | 2010-08-19 | 2010-08-19 | Integrated battery charger and circuit structure of direct current voltage stabilizing power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201781302U true CN201781302U (en) | 2011-03-30 |
Family
ID=43794504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202966517U Expired - Lifetime CN201781302U (en) | 2010-08-19 | 2010-08-19 | Integrated battery charger and circuit structure of direct current voltage stabilizing power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201781302U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950993A (en) * | 2010-08-19 | 2011-01-19 | 美凌微电子(上海)有限公司 | Lithium battery charger and DC voltage-stabilizing power supply integrated circuit system |
| CN104052275A (en) * | 2013-03-14 | 2014-09-17 | 马克西姆综合产品公司 | System and Methods for Two-Stage Buck Boost Converters with Fast Transient Response |
| CN105281395A (en) * | 2015-05-28 | 2016-01-27 | 维沃移动通信有限公司 | Charging detection circuit, mobile terminal and charging detection system |
| CN105656307A (en) * | 2016-03-03 | 2016-06-08 | 京东方科技集团股份有限公司 | Charge pump circuit and grid turn-on voltage generating circuit |
| CN106218437A (en) * | 2016-08-31 | 2016-12-14 | 袁博 | A kind of charging electric vehicle control centre, the universal electric automobile charging station of regulated power supply stacking and charge control method thereof |
| CN106532831A (en) * | 2016-11-30 | 2017-03-22 | 珠海市魅族科技有限公司 | Charging control method and device |
| CN108233451A (en) * | 2016-12-13 | 2018-06-29 | 华硕电脑股份有限公司 | Electronic device and its charging method |
-
2010
- 2010-08-19 CN CN2010202966517U patent/CN201781302U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950993A (en) * | 2010-08-19 | 2011-01-19 | 美凌微电子(上海)有限公司 | Lithium battery charger and DC voltage-stabilizing power supply integrated circuit system |
| CN104052275A (en) * | 2013-03-14 | 2014-09-17 | 马克西姆综合产品公司 | System and Methods for Two-Stage Buck Boost Converters with Fast Transient Response |
| CN104052275B (en) * | 2013-03-14 | 2019-06-04 | 马克西姆综合产品公司 | System and method for the two-stage buck-boost converter with fast transient response |
| CN105281395A (en) * | 2015-05-28 | 2016-01-27 | 维沃移动通信有限公司 | Charging detection circuit, mobile terminal and charging detection system |
| WO2016188301A1 (en) * | 2015-05-28 | 2016-12-01 | 维沃移动通信有限公司 | Charging detection circuit, mobile terminal and charging detection system |
| CN105281395B (en) * | 2015-05-28 | 2018-03-20 | 维沃移动通信有限公司 | A kind of charging detecting circuit, mobile terminal and charging detecting system |
| CN105656307A (en) * | 2016-03-03 | 2016-06-08 | 京东方科技集团股份有限公司 | Charge pump circuit and grid turn-on voltage generating circuit |
| CN105656307B (en) * | 2016-03-03 | 2018-01-26 | 京东方科技集团股份有限公司 | Charge pump circuit and gate turn-on voltage generative circuit |
| CN106218437A (en) * | 2016-08-31 | 2016-12-14 | 袁博 | A kind of charging electric vehicle control centre, the universal electric automobile charging station of regulated power supply stacking and charge control method thereof |
| CN106532831A (en) * | 2016-11-30 | 2017-03-22 | 珠海市魅族科技有限公司 | Charging control method and device |
| CN108233451A (en) * | 2016-12-13 | 2018-06-29 | 华硕电脑股份有限公司 | Electronic device and its charging method |
| CN108233451B (en) * | 2016-12-13 | 2021-05-11 | 华硕电脑股份有限公司 | Electronic device and charging method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201781302U (en) | Integrated battery charger and circuit structure of direct current voltage stabilizing power supply | |
| CN103545865B (en) | For the apparatus and method powered in the terminal | |
| EP2528186B1 (en) | Management device for charging circuit and wireless terminal | |
| CN101682199B (en) | Power distribution circuit for use in a portable telecommunications device | |
| CN109787318B (en) | Discharge circuit and electronic equipment | |
| CN101371212B (en) | Charger and power supply for mobile devices | |
| CN105518968A (en) | Universal power adapter | |
| US10574073B2 (en) | Electronic device and method for controlling power supply | |
| US10031568B2 (en) | Tablet computer with a step-up circuit | |
| CN103454572B (en) | Battery analogue circuit | |
| CN103475223A (en) | Step-down converter | |
| CN108964197A (en) | A kind of charging circuit and power supply device | |
| US9350167B2 (en) | Electronic device, power supply control chip and power supply control method | |
| CN104092277A (en) | Power supply circuit including bidirectional DC converter and control method thereof | |
| CN104158241A (en) | Charging control device, device and POS terminal | |
| CN101950993A (en) | Lithium battery charger and DC voltage-stabilizing power supply integrated circuit system | |
| CN204615444U (en) | Panel computer | |
| TW201414127A (en) | Configurable power supply system | |
| CN110970956A (en) | Charging method, electronic device, charging device and charging system | |
| CN102739044B (en) | DC/DC boost converter and LED driver | |
| CN101527508A (en) | Voltage raising and reducing two-way voltage conversion circuit | |
| US20210249870A1 (en) | Battery control circuit, battery and unmanned aerial vehicle | |
| CN210517858U (en) | Terminal power supply circuit and terminal | |
| CN210821900U (en) | Integrated control charging circuit and device for unmanned aerial vehicle | |
| CN107276199B (en) | Solar charging device and charging method using solar cell |
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: GIANTEC SEMICONDUCTOR, INC. Free format text: FORMER OWNER: MAXLLENT CORP. Effective date: 20111021 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111021 Address after: Songtao Lu Pudong New Area Zhangjiang hi tech park Shanghai 201203 Lane 647 No. 12 Patentee after: Giantec Semiconductor Inc. Address before: 201203 Shanghai city Pudong New Area road 887 Lane 72 Zuchongzhi Room 201 No. Patentee before: Meiling Microelectronics (Shanghai) Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 201203 No. 12, Lane 647, Songtao Road, China (Shanghai) Free Trade Pilot Area, Pudong New Area, Shanghai Patentee after: Juchen Semiconductor Co., Ltd. Address before: 201203 No. 12, Lane 647, Songtao Road, Zhangjiang High-tech Park, Pudong New Area, Shanghai Patentee before: Giantec Semiconductor Inc. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110330 |