CN106253663B - The control method and control system of load current - Google Patents
The control method and control system of load current Download PDFInfo
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- CN106253663B CN106253663B CN201610811741.7A CN201610811741A CN106253663B CN 106253663 B CN106253663 B CN 106253663B CN 201610811741 A CN201610811741 A CN 201610811741A CN 106253663 B CN106253663 B CN 106253663B
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- adapter
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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
Abstract
The present invention provides a kind of control method of load current and control systems, wherein method includes：The fully loaded quiescent potential for obtaining adapter reduces the cut-off current for the load being connect with adapter, adapter is made to be operated in constant voltage mode when the output voltage of adapter is less than or equal to the fully loaded quiescent potential of adapter.The control method and control system of the load current of the present invention, change the cut-off current of adjustment load in real time according to adapter output voltage, when adapter output voltage is reduced to the fully loaded quiescent potential of adapter, loading cut-off current by reduction makes adapter output voltage go up, it is operated in pressure constant state, it avoids adapter to be worked long hours due to the variation of load current in constant current mode, ensure that the safety and reliability of system.
Description
Technical field
The present invention relates to electronic circuit technology field, more particularly to the control method and control system of a kind of load current.
Background technology
Power supply adaptor (hereinafter referred to as adapter) is as a kind of power supply of common small portable consumer electronics
Conversion equipment is matched in extensively in the equipment such as mobile phone, laptop, mobile power, walkman, game machine.Different adaptations
Device, nominal voltage and electric current are different, thus fan-out capability is also not quite similar.For example, when the full-load current energy of an adapter
When power is designed as 2A, practical current limliting may usually be designed as 2.2A.
When the current capacity of adapter is more than the current needs of load equipment connected to it (hereinafter referred to as loading), fit
Orchestration is operated in constant voltage mode, and output voltage is constant, as shown in Figure 1.Under constant voltage mode, adapter is from its peak power output
There is certain distance, it is ensured that adapter works reliable and securely.When the output current ability of adapter is less than the electric current of load
When demand, adapter exits constant voltage mode, and output voltage reduces, into constant current mode, as shown in Figure 2.Under constant current mode, fit
Circuit devcie in orchestration reaches its maximum operating currenbt, and device current stress is larger, is usually not intended to adapter long-term work
In constant current mode.After some adapters exit constant voltage mode, guard mode can be entered, be stopped, as shown in Figure 3.
So if load current changes, it is existing when the current capacity of adapter is less than the current needs of load
Some adapters can exit constant voltage mode, and output voltage reduces, and into constant current mode, device reaches its maximum operating currenbt, device
Part current stress is big, or even after exiting constant voltage mode there are part adapter, into guard mode, the situation being stopped, by
This can produce bigger effect the reliability of system and safety.
Invention content
Based on the above issues, the present invention provides a kind of control method of load current and control systems so that different
When load is connected with different adapters, no matter whether load current demand changes, and load and adapter can work
In ideal operating point, to ensure reliability and the safety of system operation.
The control method of load current provided by the invention, includes the following steps：
Obtain the fully loaded quiescent potential of adapter；
The output voltage for detecting the adapter in real time is less than or equal to the adaptation in the output voltage of the adapter
When the fully loaded quiescent potential of device, the cut-off current for the load being connect with the adapter is reduced, the adapter is made to be operated in perseverance
Die pressing type.
As a kind of embodiment, the fully loaded quiescent potential for obtaining adapter includes the following steps：
The cut-off current of load is set, and obtains the underloading quiescent potential of the adapter；
Judge whether current load current reaches the cut-off current of load；
If current load current has reached the cut-off current of load, increase loaded cut-off current；
After increasing loaded cut-off current, when the output voltage of the adapter is electric from the underloading operating point of the adapter
After low first preset value of pressure drop, the output voltage of the adapter is obtained, obtains the fully loaded quiescent potential of the adapter.
As a kind of embodiment, the output voltage of the real-time test adaptor, when the output electricity of the adapter
When pressure is less than or equal to the fully loaded quiescent potential of the adapter, the cut-off current for the load being connect with the adapter is reduced,
So that the adapter is operated in constant voltage mode, includes the following steps：
Detect the output voltage of the adapter；
Judge described in the underloading quiescent potential reduction of the whether more described adapter of the output voltage of presently described adapter
First preset value；
If being judged as YES, the cut-off current of the load is reduced, until detecting that the output voltage of the adapter gos up
Second preset value；Second preset value is that the fully loaded quiescent potential of the adapter and the adapter are operated in constant pressure mould
The pressure difference between output voltage when formula.
As a kind of embodiment, the control method of load current provided by the invention is further comprising the steps of：Judge
Whether the fully loaded quiescent potential of adapter has been obtained；
If being judged as NO, when load current reaches the cut-off current of load, increase loaded cut-off current, to obtain adaptation
The fully loaded quiescent potential of device.
Correspondingly, the present invention also provides a kind of control systems of load current, including acquisition module and adjustment module；
The acquisition module, the fully loaded quiescent potential for obtaining adapter；
The adjustment module, the output voltage for detecting the adapter in real time, in the output voltage of the adapter
Less than or equal to the adapter fully loaded quiescent potential when, reduce the cut-off current of load being connect with the adapter, make
The adapter is operated in constant voltage mode.
As a kind of embodiment, the acquisition module includes first voltage detection unit, judging unit, the first adjustment
Unit and second voltage detection unit；
The first voltage detection unit, the cut-off current for load to be arranged, and obtain the underloading work of the adapter
Point voltage；
The judging unit, for judging whether current load current reaches the cut-off current of load；
The first adjustment unit increases load if having reached the cut-off current of load for current load current
Cut-off current；
The second voltage detection unit is used for after increasing loaded cut-off current, when the output voltage of the adapter
After the underloading quiescent potential of the adapter reduces the first preset value, the output voltage of the adapter is obtained, institute is obtained
State the fully loaded quiescent potential of adapter.
As a kind of embodiment, the adjustment module includes tertiary voltage detection unit, judging unit and second
Adjustment unit；
The tertiary voltage detection unit, the output voltage for detecting the adapter；
The judging unit, the underloading work for judging the whether more described adapter of the output voltage of presently described adapter
Making point voltage reduces by first preset value；
The second adjustment unit, the output voltage for judging presently described adapter in the judging unit are relatively described
After the underloading quiescent potential of adapter reduces by first preset value, then the cut-off current of the load is reduced, until detecting
Output voltage the second preset value of rise of the adapter；Second preset value is the fully loaded quiescent potential of the adapter
The pressure difference between output voltage when being operated in constant voltage mode with the adapter.
As a kind of embodiment, the control system of load current of the invention further includes judgment module；
The judgment module is for judging whether the second voltage detection unit has obtained the fully loaded work of adapter
Point voltage by the first adjustment unit when load current reaches the cut-off current of load, increases load if being judged as NO
Cut-off current, to obtain the fully loaded quiescent potential of adapter.
The advantageous effect of the present invention compared with the prior art is：
The control method and control system of load current provided by the invention, by the fully loaded operating point electricity for obtaining adapter
Pressure, when the output voltage of adapter is less than or equal to the fully loaded quiescent potential of adapter, reduction is connect negative with adapter
The cut-off current of load, makes adapter be operated in constant voltage mode.The present invention changes the limit of adjustment load in real time according to adapter output voltage
Flow valuve, when adapter output voltage is reduced to the fully loaded quiescent potential of adapter, loading cut-off current by reduction makes adaptation
Device output voltage go up, be operated in pressure constant state (health status), avoid adapter it is long due to the variation of load current when
Between be operated in constant current mode, ensure that the safety and reliability of system.
Description of the drawings
Fig. 1 is operated in output voltage schematic diagram when constant voltage mode for the adapter in background technology；
Fig. 2 is operated in output voltage schematic diagram when constant current mode for the adapter in background technology；
Fig. 3 is operated in another output voltage schematic diagram when constant current mode for the adapter in background technology；
Fig. 4 is the flow diagram of the control method for the load current that the embodiment of the present invention one provides；
Fig. 5 is the output voltage schematic diagram of the adapter in one embodiment of the invention, and the underloading of adapter is shown
Quiescent potential V0；
Fig. 6 is another output voltage schematic diagram of the adapter in one embodiment of the invention, and it is default to be shown first
It is worth Δ V1；
Fig. 7 is the another output voltage schematic diagram of the adapter in one embodiment of the invention, and it is default to be shown second
It is worth Δ V2；
Fig. 8 is the flow diagram of the control method for the load current that one embodiment of the invention provides；
Fig. 9 is the concrete operations flow diagram of the control method for the load current that another embodiment of the present invention provides；
Figure 10 is the concrete operations flow diagram of the control method for the load current that further embodiment of this invention provides；
Figure 11 is the structural schematic diagram of the control system for the load current that one embodiment of the invention provides.
Specific implementation mode
Below in conjunction with attached drawing, the technical characteristic and advantage above-mentioned and other to the present invention are clearly and completely described,
Obviously, described embodiment is only the section Example of the present invention, rather than whole embodiments.
Referring to Fig. 4, one embodiment of the invention provides a kind of control method of load current, includes the following steps：
S100, the fully loaded quiescent potential for obtaining adapter；
The output voltage of S200, real-time test adaptor, in output voltage the expiring less than or equal to adapter of adapter
When carrying quiescent potential, the cut-off current for the load being connect with adapter is reduced, adapter is made to be operated in constant voltage mode.
Wherein, the fully loaded quiescent potential of adapter refers to the output that adapter is entered by constant voltage mode after constant current mode
Voltage.When the current needs of load, that is, the maximum cut-off current loaded can then obtain suitable when being more than the current capacity of adapter
The fully loaded quiescent potential of orchestration, loaded work piece at this time is in the cut-off current of load, maximum of the load cut-off current less than load
Cut-off current；When the electric current maximum cut-off current of load is less than the current capacity of adapter, then the fully loaded work of adapter can not be obtained
Make point voltage, loaded work piece is operated in constant voltage mode in its maximum cut-off current, adapter.
The present embodiment obtains the fully loaded quiescent potential of adapter, is less than or equal to adapter in the output voltage of adapter
Fully loaded quiescent potential when, reduce the cut-off current of load being connect with adapter, adapter made to be operated in constant voltage mode.The party
Method changes the cut-off current of adjustment load in real time according to adapter output voltage, when adapter output voltage is reduced to the fully loaded of adapter
When quiescent potential, loading cut-off current by reduction makes adapter output voltage go up, and is operated in pressure constant state (health status),
It avoids adapter to be worked long hours due to the variation of load current in constant current mode, ensure that the safety of system and reliable
Property.The control method of load current provided in this embodiment is suitable for the adapter of various output voltages and various current capacities.
Specifically, in step S100, the acquisition of the fully loaded quiescent potential of adapter can be realized by the following method：
The cut-off current that S110, setting load, and obtain the underloading quiescent potential of adapter.
S120, judge whether current load current reaches the cut-off current of load.
If S130, current load current have reached the cut-off current of load, increase loaded cut-off current.
If current load current does not reach the cut-off current of load, loaded cut-off current is not increased.
S140, after increasing loaded cut-off current, when the output voltage of adapter is from the underloading quiescent potential of adapter
After reducing the first preset value, the output voltage of adapter is obtained, obtains the fully loaded quiescent potential of adapter.
In general, when adapter is with load initial connection, load current is very small, and adapter is in light condition, work
Pattern is constant voltage mode.When load current increases to certain value, the output voltage of adapter can be reduced quickly, and adapter enters
The output voltage of constant current mode, adapter at this time is the fully loaded quiescent potential of adapter.
Referring to Fig. 5 to Fig. 7, during entering constant current mode by constant voltage mode due to adapter, output voltage be by
It gradually reduces, there are one stringent diacritical points.So the fully loaded quiescent potential of adapter can be according to the need of actual circuit
It asks to choose.In above-described embodiment, the underloading quiescent potential of adapter reduces the voltage value as adaptation after the first preset value
The fully loaded quiescent potential of device.
As shown in Figures 5 to 7, the starting voltage that adapter is found in smaller value is arranged in the initial cut-off current of load,
That is the underloading quiescent potential V0 of adapter.When load current increases, the output voltage of load input voltage, that is, adapter is small
In the underloading quiescent potential V0 of adapter.When initial, load cut-off current is defaulted as minimum cut-off current.
You need to add is that when actually detected voltage, analog to digital conversion circuit (ADC) can be utilized, by the underloading of adapter
Quiescent potential V0 (analog voltage) is converted into digital value and is stored.
Specifically, as shown in figure 8, step S200 can be realized by the following method：
The output voltage of S210, test adaptor.
S220, judge whether the output voltage of current adapter is default compared with the underloading quiescent potential reduction by first of adapter
Value.
If S230, being judged as YES, the cut-off current of load is reduced, until detecting the output voltage rise second of adapter
Preset value.
Second preset value is operated in output voltage when constant voltage mode for the fully loaded quiescent potential and adapter of adapter
Between pressure difference.
Above-mentioned first preset value is between underloading quiescent potential and the fully loaded quiescent potential of adapter of adapter
Difference judges whether the output voltage of current adapter reduces compared with the underloading quiescent potential of adapter so in step S220
First preset value, that is, judge whether the output voltage of current adapter has drop to the fully loaded quiescent potential of adapter, i.e.,
Whether current adapter has come into constant current mode.
With continued reference to Fig. 8, the control method of load current provided by Embodiment 2 of the present invention, in the base of above-described embodiment one
It is further comprising the steps of on plinth：
S300, the output voltage for detecting adapter be higher than adapter fully loaded quiescent potential when, further judge
Whether current load current reaches the cut-off current of load；
If S400, current load current have reached the cut-off current of load, increase loaded cut-off current.
As shown in Figures 5 to 7, its output voltage when adapter is operated in constant voltage mode nor completely it is invariable,
As it is aforementioned constant current mode is entered by constant voltage mode due to adapter during, output voltage continuously decreases, not
One stringent diacritical point (needing to be set according to circuit requirements).So after reducing the cut-off current of load, the output of adapter
Voltage is from the fully loaded quiescent potential bottom out of adapter, and go up the second preset value Δ V2 (not up to the first preset value Δs
V1 after), without reaching the underloading quiescent potential V0 of adapter, adapter has just come into constant voltage mode.So second is pre-
If being worth Δ V2 is less than or equal to the first preset value Δ V1.
As shown in Figures 5 to 7, judge whether adapter output voltage reduces the first preset value Δ V1, if adapter is defeated
Going out voltage does not reduce the first preset value Δ V1, and load current reaches its cut-off current, then increases load cut-off current；If adapter
Output voltage does not reduce the first preset value Δ V1, and load current is not up to its cut-off current, then illustrates the current capacity of adapter
More than the current needs of load, adapter is operated under constant voltage mode.
As shown in fig. 6, increase load cut-off current, until load detecting to adapter output voltage reduces Δ V1, then table
Show that adapter has logged out constant voltage mode, initially enters constant current mode.In order to enable adapter to be operated in constant voltage mode, and it is full
Work is carried it is necessary to make the output current of adapter certain value higher than the cut-off current of load.So the cut-off current of load is reduced,
Until the output voltage rise Δ V2 of adapter, as shown in Figure 7.The cut-off current adjustment process of the load is as shown in Figure 9.
After Δ V1 can also be reduced detecting adapter output voltage, on the basis of the load cut-off current adjusted
On, load cut-off current is reduced into Δ I1 again, to ensure that adapter is operated in constant voltage mode.
The control method of load current provided in this embodiment changes adjustment load in real time according to the output voltage of adapter
Cut-off current.In the beginning of adapter electric discharge, increases loaded cut-off current, search out the maximum output current point of adapter (i.e.
The fully loaded operating point of adapter), give full play to the discharge capability of adapter；When the output voltage of adapter is reduced to a certain degree
Afterwards, by reduce load cut-off current, so that the output voltage of adapter is gone back up to health status, ensure that system safety and
Reliability.
The above method by the cut-off current of load be adjusted such that adapter restore constant voltage mode after, just no longer change load
Cut-off current.But the current capacity of some adapters may be reduced after a period of operation, if no longer changed
The cut-off current of load, then adapter may be operated in constant current mode.
Further, as another embodiment, above-mentioned steps S100 is further comprising the steps of：
S150, judge whether to have obtained the fully loaded quiescent potential of adapter, if being judged as NO, be reached in load current
To load cut-off current when, increase loaded cut-off current, to obtain the fully loaded quiescent potential of adapter；If being judged as YES,
Loaded cut-off current is not increased.
Therefore, can be INC flags to be added in system, whether the cut-off current for recording load adjusts the fully loaded work of adapter
Make a little.As shown in Figure 10, when INC=1, load cut-off current does not adjust the fully loaded operating point of adapter；As INC=0, load
Cut-off current has arrived the fully loaded operating point of adapter after the adjustment.As INC=0, does not then allow to increase load cut-off current, can only reduce
Its cut-off current.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of control system of load current, the system
The step of implementation can refer to the above method is realized, it is no longer redundant later to repeat place.
The control system of load current provided in an embodiment of the present invention, as shown in figure 11, including acquisition module 100 and adjustment
Module 200.Wherein, acquisition module 100 is used to obtain the fully loaded quiescent potential of adapter；Module 200 is adjusted for examining in real time
The output voltage for surveying adapter is reduced when the output voltage of adapter is less than or equal to the fully loaded quiescent potential of adapter
The cut-off current for the load being connect with adapter, makes adapter be operated in constant voltage mode.
Specifically, acquisition module 100 includes first voltage detection unit, judging unit, the first adjustment unit and second
Voltage detection unit.First voltage detection unit is used to be arranged the cut-off current of load, and obtains the underloading operating point electricity of adapter
Pressure.Judging unit is for judging whether current load current reaches the cut-off current of load.If the first adjustment unit is for current
Load current have reached the cut-off current of load, then increase loaded cut-off current.Second voltage detection unit, for increasing
After the cut-off current of load, after the output voltage of adapter reduces the first preset value from the underloading quiescent potential of adapter, obtain
The output voltage for taking adapter obtains the fully loaded quiescent potential of adapter.
It includes tertiary voltage detection unit, judging unit and second adjustment unit to adjust module 200.Tertiary voltage detects
Unit is used for the output voltage of test adaptor；Whether judging unit is used to judge the output voltage of current adapter compared with adapter
Underloading quiescent potential reduce the first preset value；Second adjustment unit is used to judge in judging unit the output of current adapter
After voltage reduces the first preset value compared with the underloading quiescent potential of adapter, then the cut-off current of load is reduced, until detecting suitable
Output voltage the second preset value of rise of orchestration；Second preset value is that the fully loaded quiescent potential of adapter is operated in adapter
The pressure difference between output voltage when constant voltage mode.
The control system for the load current that another embodiment of the present invention provides, further includes sentencing on the basis of the above embodiments
Disconnected module.Judgment module for judging whether second voltage detection unit has obtained the fully loaded quiescent potential of adapter, if
It is judged as NO, then loaded cut-off current is increased when load current reaches the cut-off current of load by the first adjustment unit, to obtain
Take the fully loaded quiescent potential of adapter.If being judged as YES, loaded cut-off current is not increased.
The control method and control system of load current provided by the invention, the cut-off current loaded by dynamic modulation, have
Safety and the reliability that ensure that effect system, improve load charge efficiency, applied widely, can meet simultaneously a variety of suitable
The requirement of orchestration difference current capacity is suitable for the adapter of different output voltages.
Particular embodiments described above has carried out further the purpose of the present invention, technical solution and advantageous effect
It is described in detail, it should be understood that the above is only a specific embodiment of the present invention, the protection being not intended to limit the present invention
Range.It particularly points out, to those skilled in the art, all within the spirits and principles of the present invention, that is done any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of control method of load current, which is characterized in that include the following steps：
Obtain the fully loaded quiescent potential of adapter；
The output voltage for detecting the adapter in real time is less than or equal to the adapter in the output voltage of the adapter
When fully loaded quiescent potential, the cut-off current for the load being connect with the adapter is reduced, the adapter is made to be operated in constant pressure mould
Formula；
The fully loaded quiescent potential for obtaining adapter, includes the following steps：
The cut-off current of load is set, and obtains the underloading quiescent potential of the adapter；
Judge whether current load current reaches the cut-off current of load；
If current load current has reached the cut-off current of load, increase loaded cut-off current；
After increasing loaded cut-off current, when the output voltage of the adapter is dropped from the underloading quiescent potential of the adapter
After low first preset value, the output voltage of the adapter is obtained, obtains the fully loaded quiescent potential of the adapter.
2. the control method of load current according to claim 1, which is characterized in that the real-time test adaptor it is defeated
Go out voltage, when the output voltage of the adapter is less than or equal to the fully loaded quiescent potential of the adapter, reduction and institute
The cut-off current for stating the load of adapter connection, makes the adapter be operated in constant voltage mode, includes the following steps：
Detect the output voltage of the adapter；
Judge that the underloading quiescent potential of the whether more described adapter of the output voltage of presently described adapter reduces described first
Preset value；
If being judged as YES, the cut-off current of the load is reduced, until detecting the output voltage rise second of the adapter
Preset value；When second preset value is operated in constant voltage mode for the fully loaded quiescent potential of the adapter with the adapter
Output voltage between pressure difference.
3. the control method of load current according to claim 1, which is characterized in that further comprising the steps of：Judgement is
The no fully loaded quiescent potential for having obtained adapter；
If being judged as NO, when load current reaches the cut-off current of load, increase loaded cut-off current, to obtain adapter
Fully loaded quiescent potential.
4. a kind of control system of load current, which is characterized in that including acquisition module and adjustment module；
The acquisition module, the fully loaded quiescent potential for obtaining adapter；
The adjustment module, the output voltage for detecting the adapter in real time are less than in the output voltage of the adapter
Or equal to the adapter fully loaded quiescent potential when, reduce the cut-off current of load being connect with the adapter, make described in
Adapter is operated in constant voltage mode；
The acquisition module includes that first voltage detection unit, judging unit, the first adjustment unit and second voltage detection are single
Member；
The first voltage detection unit, the cut-off current for load to be arranged, and obtain the underloading operating point electricity of the adapter
Pressure；
The judging unit, for judging whether current load current reaches the cut-off current of load；
The first adjustment unit increases loaded limit if having reached the cut-off current of load for current load current
Flow valuve；
The second voltage detection unit, for after increasing loaded cut-off current, when the output voltage of the adapter is from institute
After underloading quiescent potential the first preset value of reduction for stating adapter, the output voltage of the adapter is obtained, is obtained described suitable
The fully loaded quiescent potential of orchestration.
5. the control system of load current according to claim 4, which is characterized in that the adjustment module includes third electricity
Press detection unit, judging unit and second adjustment unit；
The tertiary voltage detection unit, the output voltage for detecting the adapter；
The judging unit, the underloading operating point for judging the whether more described adapter of the output voltage of presently described adapter
Voltage reduces by first preset value；
The second adjustment unit, for judging the output voltage of the presently described adapter adaptation in the judging unit
After the underloading quiescent potential of device reduces by first preset value, then the cut-off current of the load is reduced, until detecting described
Output voltage the second preset value of rise of adapter；Fully loaded quiescent potential and institute of second preset value for the adapter
State the pressure difference between output voltage when adapter is operated in constant voltage mode.
6. the control system of load current according to claim 4, which is characterized in that further include judgment module；
The judgment module is used to judge whether the second voltage detection unit to have obtained the fully loaded operating point electricity of adapter
Pressure, if being judged as NO, by the first adjustment unit when load current reaches the cut-off current of load, increases loaded limit
Flow valuve, to obtain the fully loaded quiescent potential of adapter.
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| CN201610811741.7A CN106253663B (en) | 2016-09-08 | 2016-09-08 | The control method and control system of load current |
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| CN201610811741.7A CN106253663B (en) | 2016-09-08 | 2016-09-08 | The control method and control system of load current |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6844705B2 (en) * | 2002-12-09 | 2005-01-18 | Intersil Americas Inc. | Li-ion/Li-polymer battery charger configured to be DC-powered from multiple types of wall adapters |
| JP4245571B2 (en) * | 2005-02-09 | 2009-03-25 | Ｎｅｃエレクトロニクス株式会社 | Charging control circuit and charging device |
| CN201708977U (en) * | 2010-01-20 | 2011-01-12 | 黄华南 | Risetime phase dimmer with adapter |
| CN102200826B (en) * | 2010-03-25 | 2014-09-03 | 联想(北京)有限公司 | Power adapter and portable computer |
| TW201251269A (en) * | 2011-04-25 | 2012-12-16 | Intersil Americas LLC | Charging system with adaptive power management |
| CN102983715A (en) * | 2012-11-30 | 2013-03-20 | 西安智海电力科技有限公司 | XC/DC conversion circuit of low-voltage power supply with high robustness |
| CN103885392B (en) * | 2012-12-19 | 2016-10-26 | 宏碁股份有限公司 | Electric power system, voltage regulating device and control method thereof |
| CN104281248A (en) * | 2013-07-01 | 2015-01-14 | 鸿富锦精密工业（深圳）有限公司 | Voltage adapter |
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