CN101202464A - Power management system with charger and boost controller - Google Patents
Power management system with charger and boost controller Download PDFInfo
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- CN101202464A CN101202464A CNA2007101637765A CN200710163776A CN101202464A CN 101202464 A CN101202464 A CN 101202464A CN A2007101637765 A CNA2007101637765 A CN A2007101637765A CN 200710163776 A CN200710163776 A CN 200710163776A CN 101202464 A CN101202464 A CN 101202464A
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Abstract
A power management system comprises a power conversion stage and a controller. The power conversion stage has two terminals. The first terminal is coupled to a first power source which provides a first voltage. The second terminal is selectively coupled to a second power source which provides a second voltage. The controller coupled to the power conversion stage can select a mode from at least a first mode and a second mode. In the first mode, the power conversion stage receives the first voltage at the first terminal and generates a step-up voltage at the second terminal. The generated step-up voltage is greater than the first voltage. In the second mode, the power conversion stage receives the second voltage at the second terminal and generates a step-down voltage at the first terminal for charging the first power source. The generated step-down voltage is less than the second voltage.
Description
Related application
The application requires the priority of 60/856, No. 075 provisional application of the U.S. of submission on November 1st, 2006, and the full content of this application is bonded to this reference.
Technical field
The invention relates to power-supply management system, especially about having the power-supply management system of charger/boost pressure controller.
Background technology
Nowadays, the lithium ionic cell unit technology relates to the high power density battery unit gradually.Yet these high power density battery units have the characteristic that minimum discharge battery cell voltage is lowered (for example, being reduced to 2.2V).For example, because having the battery voltage range of the lithium ion battery (2-cell lithium ion battery) of 2 battery units can be from 4.4V to 8.8V, in the process that produces a 5V output voltage that is derived from the 2-cell lithium ion battery, face the challenge by the battery-powered portable equipment of 2-cell lithium-ion electric.Therefore, in order to generate a 5V output voltage reliably, need to adopt a new buck-boost transducer to substitute original step-down controller.
Figure 1 shows that the typical power supply topologies 100 of a UMPC (Ultra-Mobile PC) notebook computer according to the employing lithium ion battery of prior art.As shown in Figure 1, power supply topologies 100 comprises an adapter 102, a lithium ion battery 104, a battery charger controller 106, a charger 108,160, one of a plurality of system loads are coupled in the switch 110 between adapter 102 and the system load 160, and a switch 112 that is coupled between battery 104 and the system load 160.If adapter 102 can be used, by connecting the switch 110 by battery charger controller 106 controls, adapter 102 can be a plurality of system load 160 power supplies.Adapter 102 also can be via the charger 108 that is recharged 106 controls of device controller to battery 104 chargings.If adapter is unavailable, by connecting the switch 112 by battery charger controller 106 controls, battery 104 can be system load 106 power supplies.Battery 104 comprises 2 lithium ionic cell units and has a voltage range from 4.4V to 8.8V.Therefore, in order to produce an essential 5V system voltage, need a buck/boost converter.
Figure 2 shows that a typical buck/boost converter 200 among Fig. 1 of being applied to according to prior art.As shown in Figure 2, in decompression mode, by alternately property connection switch 202 and switch 204, buck/boost converter 200 can produce a step less than input voltage 214 and fall voltage 212.In boost mode, by replacing property connection switch 206 and switch 208, buck/boost converter 200 can produce a step up voltage 218 greater than input voltage 216.Buck/boost converter 200 needs a plurality of switches like this, and this can increase cost and reduce system effectiveness.In addition, when buck/boost converter 200 worked in decompression mode, switch 208 usually was in on-state, and this can cause too much power loss.Similarly, when buck/boost converter 200 worked in boost mode, switch 202 usually was in on-state, and this can cause too much power loss equally.In addition, in translate phase, when input voltage almost equated with output voltage, all switches 202,204,206 and 208 were with in running order, and this reduces whole conversion efficiency equally.
Summary of the invention
In an embodiment, a power-supply management system comprises a power conversion stage and a controller.Power conversion stage has 2 pins.First pin is coupled in first power supply that first voltage is provided.Second pin is selectively coupled in the second source that second voltage is provided.The controller that is coupled in power conversion stage can be selected a kind of pattern from least one first pattern and one second pattern.In first pattern, power conversion stage receives first voltage at the first pin place, and produces a step up voltage at the second pin place.The step up voltage that produces at the second pin place is greater than first voltage.In second pattern, power conversion stage receives second voltage and produces one at the first pin place and is used to the step of first power source charges to fall voltage at the second pin place.The step that produces at the first pin place is fallen voltage less than second voltage.
Description of drawings
The feature of embodiments of the invention and advantage will become more obvious by following detailed description with the accompanying drawing, and the like numerals will representation class is like assembly, and wherein in the accompanying drawing:
Figure 1 shows that power supply topologies according to the UMPC notebook computer of the employing lithium ion battery of prior art.
Figure 2 shows that the buck/boost converter among Fig. 1 of being applied to according to prior art.
Figure 3 shows that the topological structure of power-supply management system according to an embodiment of the invention.
Figure 4 shows that another topological structure of power-supply management system according to an embodiment of the invention.
Fig. 5 A is depicted as another topological structure of power-supply management system according to an embodiment of the invention.
Fig. 5 B is depicted as another topological structure of power-supply management system according to an embodiment of the invention.
Figure 6 shows that another topological structure of power-supply management system according to an embodiment of the invention.
Figure 7 shows that the operational flowchart of power-supply management system according to an embodiment of the invention.
Figure 8 shows that the operational flowchart of power-supply management system according to an embodiment of the invention.
Embodiment
Below will provide detailed reference to embodiments of the invention.Though the present invention will set forth in conjunction with the embodiments, should understand this is not to mean the present invention is defined in these embodiment.On the contrary, the invention is intended to contain defined various options in the spirit and scope of the invention that is defined by the appended claim item, but modification item and equivalent terms.
In addition, in following detailed description of the present invention,, illustrated a large amount of details in order to provide one at understanding completely of the present invention.Yet it will be understood by those skilled in the art that does not have these details, and the present invention can implement equally.In some other examples, scheme, formality, element and the circuit known for everybody are not described in detail, so that highlight the present invention's purport.
In one embodiment, the present invention provides a power-supply management system for the lithium ion battery with one or more battery units.In such embodiment, power-supply management system comprises the controller of a power conversion stage and a power controlling switching stage.What have advantage is that the power conversion stage of being controlled by controller may work as a boost converter (for example, switching mode boost converter) or a charger (for example, switching mode step-down controller).In such embodiment, power-supply management system also comprises one first power supply (for example battery pack) and a second source (for example adapter).In first pattern, first power supply can provide energy to system load via power conversion stage, and the power transfer level work is a boost converter.In second pattern, second source can be via identical power conversion stage to first power source charges, and the power transfer level work is a charger.Therefore, do not need extra boost converter in an embodiment.
Figure 3 shows that the topological structure of power-supply management system 300 according to an embodiment of the invention.In one embodiment, power-supply management system 300 comprises a power conversion stage 302 with first pin 314 and second pin 324.First pin 314 is coupled in first power supply 316.In one embodiment, first power supply 316 can be one provides first voltage (cell voltage V
BAT) battery pack.In one embodiment, switch 342, the second pins 324 that are coupled in 326 of second pin 324 and second sources by connection can be coupled in second source 326.In one embodiment, second source 326 can be one and has second voltage (the adaptor voltages V
AD) adapter, as shown in Figure 3.Second source 326 also can comprise other power supply such as USB (USB) equipment.
In one embodiment, charger/boost pressure controller 340 can be controlled power-supply management system 300 and works in the different mode.Or rather, the charger/boost pressure controller 340 that is coupled in power conversion stage 302 can be selected a kind of pattern from least one first pattern and one second pattern.In first pattern (low battery powered mode), charger/boost pressure controller 340 can 302 work of power controlling switching stage be a boost converter.Or rather, power conversion stage 302 receives first voltage (the cell voltage V from battery pack 316 at first pin, 314 places
BAT), and to produce one at second pin, 324 places be the step up voltage that a plurality of system loads 360 are powered.In one embodiment, the step up voltage that is produced is greater than the first voltage V
BATIn second pattern (adapter powering mode), charger/boost pressure controller 340 can 302 work of power controlling switching stage be a charger (step-down controller).Or rather, power conversion stage 302 receives second voltage (the adaptor voltages V at second pin, 324 places
AD) and produce a step for battery pack 316 chargings at first pin, 314 places and fall voltage.In an embodiment, the step that is produced is fallen voltage less than the second voltage V
AD
As shown in Figure 3, in one embodiment, power conversion stage 302 can comprise that 306, one of an inductance that are coupled in an electric capacity 308 is coupled in the high-side switch 346 of second pin 324, and a low side switch 348 that is coupled between high-side switch 346 and the ground.Or rather, under the control of charger/boost pressure controller 340, by replacing property connection high-side switch 346 and low side switch switch 348, power conversion stage 302 gets final product work.
In one embodiment, power-supply management system 300 can be used to a plurality of system loads 360 power supplies that work in different voltages (for example, voltage range is from 0.8V to 5V).Therefore, can use step-down controller and produce an expectation voltage (for example, voltage range is from 0.8V to 5V) for each system load.For example, in a computer system, can use a step-down controller 360_1 and produce an expectation voltage for the power supply of 5V system; Can use a step-down controller 360_2 and produce an expectation voltage for the power supply of 3.3V system; Can use a step-down controller 360_3 and produce an expectation voltage for the power supply of 1.8V internal memory; Can use a step-down controller 360_4 and produce an expectation voltage for the power supply of 1.05V chipset; Can use a step-down controller 360_5 and produce an expectation voltage for 0.8-1.5V CPU power supply.
In one embodiment, when power-supply management system 300 works in first pattern (low battery powered mode), power conversion stage 302 may work as a boost converter, and it receives first voltage (cell voltage V at first pin, 314 places
BAT), and at second pin, 324 places generation step up voltage.Thus, battery pack 316 can be used for being a plurality of system load 360 power supplies by second pin 324.Or rather, in first pattern, when switch 346 disconnections and switch 348 connections, inductance 306 links to each other with ground and battery pack 316 can be preserved energy in inductance 306.When switch 346 is connected and switch 348 when disconnecting, thereby inductance 306 links to each other with a plurality of system loads 360 electric current is released into a plurality of system loads 360, like this at the step up voltage of second pin, the 324 places generation first voltage V greater than first pin, 314 places
BATSo by replacing property connection switch 346 and switch 348, power conversion stage 302 may work as a boost converter in first pattern.In one embodiment, the step up voltage that is derived from battery pack 316 that produces by power conversion stage 302 is greater than a predetermined voltage V
PRE(for example 5.4V).
In one embodiment, when power-supply management system 300 works in second pattern (adapter powering mode, switch 342 is connected) time, adapter 326 can be powered to a plurality of system loads 360 via second pin 324, and power conversion stage 302 may work as a charger to receive second voltage (the adaptor voltages V
AD) and produce a step for battery pack 316 charging and fall voltage.Therefore, adapter 326 not only is a plurality of system load 360 power supplies, also is battery pack 316 chargings.Or rather, in second pattern, when switch 346 is connected and switch 348 when disconnecting, thereby adapter 326 is connected with inductance 306 energy is stored in the inductance 306, and provides charging current for battery pack 316.When switch 346 disconnects and switch 348 when connecting, inductance 306 is connected with battery pack 316, is stored in energy in the inductance 306 and continues as battery pack 316 charging current is provided.Thus, the second voltage V of voltage less than second pin, 324 places falls in the step that results from first pin, 314 places
ADSo by replacing property connection switch 346 and switch 348, power conversion stage 302 may work as a charger (step-down controller) in second pattern.
In addition, in one embodiment, power-supply management system 300 also can work in three-mode (high battery powered mode, switch 344 is connected), and wherein charger/boost pressure controller 340 does not have work and battery pack 316 to can be used for by first pin 314 directly to a plurality of system loads 360 power supplies.
In the course of the work, can use when adapter 326, charger/boost pressure controller 340 can be selected second pattern, wherein is coupled in the switch 342 of 324 of adapter 326 and second pins by connection, and adapter 326 can be given a plurality of system loads 360 power supplies.In one embodiment, by charger/boost pressure controller 340 control switchs 342.In addition, charger/boost pressure controller 340 can power controlling switching stage 302 receive adapt voltages V
ADAnd produce a suitable step for battery pack 316 charging and fall voltage, this step up voltage is less than adapt voltages V
ADIn one embodiment, as adapter 326 inefficacy and cell voltage V
BATGreater than a predetermined voltage V
PREThe time, charger/boost pressure controller 340 can be selected three-mode, wherein is coupled in the switch 344 of 360 of battery pack 316 and a plurality of system loads by connection, and battery pack 316 can be a plurality of system loads 360 power supplies via first pin 314.In one embodiment, by charger/boost pressure controller 340 control switchs 344.In one embodiment, as adapter 326 inefficacy and cell voltage V
BATLess than a predetermined voltage V
PREThe time, charger/boost pressure controller 340 can be selected first pattern, and wherein charger/boost pressure controller 340 can power controlling switching stage 302 receive cell voltage V
BATAnd produce one greater than V
PREThe step up voltage, thereby be a plurality of system loads 360 power supplies via second pin 324.
What have advantage is in one embodiment, even to work as adapter 326 inefficacy and cell voltage V
BATDropping to and be lower than a minimum and require system voltage (for example, it is 5V that minimum requires system voltage), still can be a plurality of system loads 360 power supplies.Can be used as a charger or boost converter owing to be recharged the single power conversion stage 302 that device/boost pressure controller 340 controlled, therefore not needing extra boost converter is a plurality of system load 360 power supplies, and does not need extra power switch.
In one embodiment, switch 344 is optional.In three-mode, battery pack 316 can be powered to a plurality of system loads 360 via the inductance 306 and the switch 346 of place of switches 344.
Figure 4 shows that another topological structure according to the power-supply management system 400 of one embodiment of the present of invention.The unit identical with mark among Fig. 3 has similar function, for brevity, will not carry out repeatability to it at this and describe.As shown in Figure 4, in one embodiment, step-down controller 360_1 can be coupled in adapter 326 by switch 342, also can be coupled in battery pack 316 by switch 344.Power conversion stage 302 is coupled between battery pack 316 and the step-down controller 360_1.In Fig. 4, direct and battery pack 316 couplings of a plurality of step-down controller 360_2-360_5.
In one embodiment, via switch 342, step-down controller 360_1 can be by adapter 326 power supplies.In one embodiment, via switch 344 or via inductance 306 and switch 346, step-down controller 360_1 also can be by battery pack 316 power supplies.In one embodiment, a plurality of step-down controller 360_2-360_5 can be directly by battery pack 316 power supplies.
Fig. 5 A is depicted as another topological structure according to the power-supply management system 500 of one embodiment of the present of invention.The unit identical with mark among Fig. 4 with Fig. 3 has similar function, for brevity, will not carry out repeatability to it at this and describe.In one embodiment, the power-supply management system among Fig. 5 A 500 further reduces power loss.Shown in Fig. 5 A, in one embodiment, step-down controller 360_1 can also can be coupled via switch 344 and battery pack 316 via switch 342 and adapter 326 couplings.In one embodiment, a plurality of step-down controller 360_2-360_5 can also can be coupled via switch 544 and battery pack 316 via switch 542 and adapter 326 couplings.In one embodiment, switch 342,344,542 and 544 can be controlled by charger/boost pressure controller 340.
In one embodiment, but when 326 times spent of adapter, adapter 326 can be powered for step-down controller 360_2-360_5 for step-down controller 360_1 power supply with via switch 542 via switch 342.What have advantage is, the adapter electric current can be shunted by switch 342 and switch 542, compares with the flow through situation of a switch of whole adapter electric current as shown in Figure 4, and this helps further to reduce power loss.
In one embodiment, as adapter 326 inefficacy and cell voltage V
BATGreater than predetermined voltage V
PREThe time, battery pack 316 can be step-down controller 360_2-360_5 power supply for step-down controller 360_1 power supply with by switch 544 by switch 344.What have advantage is, battery current can be shunted by switch 344 and switch 544, compares with the flow through situation of a switch of entire cell electric current as shown in Figure 4, and this also helps further to reduce power loss.
Fig. 5 B is depicted as another topological structure according to the power-supply management system 500 ' of one embodiment of the present of invention.With Fig. 3, the identical unit of mark has similar function among Fig. 4 and Fig. 5 A, for brevity, will not carry out repeatability to it at this and describe.Shown in Fig. 5 B, thereby step-down controller 360_1 and buck controller 564 are used to produce an expectation voltage (voltage falls in the step) at pin 570 places are system load (for example, 5V system load) power supply.Or rather, in one embodiment, buck controller 564 can be controlled step-down controller 360_1 by alternately property connection switch 566 and switch 568 and produce the expectation step at pin 570 places and fall voltage.In one embodiment, the expectation step is fallen voltage less than input voltage 572.Step-down controller 360_2-360_5 can have similar function with step-down controller 360_1, for brevity, will no longer be repeated in this description at this.
In order to reduce/avoid the incompatibility of 564 of charger/boost pressure controller 340 and buck controllers, two kinds of controllers can be integrated in the one chip.In addition, in one embodiment, each charger/boost pressure controller 340 and buck controller 564 can need a low pressure difference linear voltage regulator (LDO).For example, charger/boost pressure controller 340 can use a 5V/100mA LDO, and buck controller 564 can use a 5V/20mA LDO.By charger/boost pressure controller 340 and buck controller 564 are integrated in the one chip, can only need a LDO.Therefore, integrated chip can only need a LDO with higher electric current, 5V/120mA LDO for example, and this can further reduce cost.
Figure 6 shows that another topological structure of power-supply management system 600 according to an embodiment of the invention.With Fig. 3, Fig. 4, the identical unit of mark has similar function among Fig. 5 A and Fig. 5 B, for brevity, will not carry out repeatability to it at this and describe.As shown in Figure 6, a charger/boost pressure controller 340, a buck controller 564 and a low pressure difference linear voltage regulator 602 are integrated in the one chip, and this can be avoided the incompatibility of 564 of charger/boost pressure controller 340 and buck controllers, and reduces cost.In one embodiment, the constant voltage 606 that is produced by low pressure difference linear voltage regulator 602 can be used for being other module for power supply.
In one embodiment, as adapter 326 inefficacy and cell voltage V
BATLess than predetermined voltage V
PREThe time, integrated chip 604 can produce a low battery signal 608.By receiving low battery signal 608, power-supply management system 600 can be reduced to a minimum degree with system power in response to low battery signal 608, and charger/boost pressure controller 340 can 302 work of power controlling switching stage be a boost converter and produce a step up voltage that is used to step-down controller 360_1 power supply.
Figure 7 shows that operational flowchart 700 according to the power-supply management system of one embodiment of the present of invention.In one embodiment, can dispose charger/boost pressure controller 340, power-supply management system mentioned above like this can work in the mode shown in the flow chart 7.Below with reference to Fig. 3, Fig. 4, Fig. 5 A, Fig. 5 B and Fig. 6 are described Fig. 7.
In calcspar 702, power-supply management system is activated, and after power-supply management system was activated, flow chart 700 forwarded square frame 704 places to.In square frame 704, power-supply management system monitors whether second source 326 is available, to select a kind of pattern from least one first pattern and one second pattern.In one embodiment, second source 326 can be one and has second voltage (the adaptor voltages V
AD) adapter (as shown in Figure 3).Yet second source 326 also can comprise other power supplys such as USB (USB) equipment.
In one embodiment, if second source 326 can be used, flow chart 700 forwards square frame 706 places to.In one embodiment, can give at least one system load (shown in square frame 712) power supply and give first power supply 316 (shown in square frame 708 and 710) charging at second source 326 in second pattern.In one embodiment, first power supply 316 can be a battery pack with at least one battery unit.
In square frame 708, the power conversion stage 302 with first pin 314 and second pin 324 can receive second voltage (the adaptor voltages V at second pin, 324 places
AD) and produce a suitable step at first pin, 314 places and fall voltage.In one embodiment, the step of generation is fallen voltage less than the second voltage V
ADAnd can be used for via first pin 314 to first power supply 316 (battery pack 316) charging, as shown in square frame 710.
In square frame 712, second source 326 can be used for being load (for example, a plurality of system loads 360) power supply via second pin 324.As shown in Figure 3, adapter 326 selectively coupled second pins 324 and can be a plurality of system loads 360 power supplies by connecting the switch of being controlled by charger/boost pressure controller 340 342.
Get back to the square frame 704 among Fig. 7, if second source 326 is unavailable, flow chart 700 forwards square frame 714 to.In square frame 714, power-supply management system monitors the first voltage V from first power supply (battery pack) 316
BATIf the first voltage V
BATGreater than reservation threshold voltage V
PRE, flow chart 700 forwards square frame 716 to.
In square frame 716, charger/boost pressure controller 340 can be selected three-mode, and wherein first power supply 316 (battery pack) can directly be a load (for example, a plurality of system loads 360) power supply.As shown in Figure 3, by connecting the switch of being controlled by charger/boost pressure controller 340 344, battery pack 316 can be a plurality of system load power supplies.Get back to Fig. 7, flow chart 700 forwards square frame 718 to, and wherein first power supply 316 is load (for example, a plurality of system loads 360) power supply via second pin 324.
Get back to square frame 714, if first voltage (cell voltage V
BAT) be not more than predetermined voltage V
PRE, flow chart 700 forwards square frame 720 to.In square frame 720, charger/boost pressure controller 340 is selected first pattern, and flow chart 700 forwards square frame 722 to.
In square frame 722, power conversion stage 302 receives the first voltage V at first pin, 314 places
BAT, and to produce one at second pin, 324 places be the step up voltage that a plurality of loads 360 are powered.In one embodiment, the step up voltage of generation is greater than the first voltage V
BATTherefore, the step up voltage that is derived from first power supply 316 that is produced by power conversion stage 302 can be load (for example, a plurality of system loads) power supply via second pin 324.
Figure 8 shows that operational flowchart 800 according to the power-supply management system of one embodiment of the present of invention.Below with reference to Fig. 3, Fig. 4, Fig. 5 A, Fig. 5 B and Fig. 6 are described Fig. 8.
As shown in Figure 8, has the first voltage V
BATFirst power supply 316 (for example, battery pack) and square frame 802 in 314 couplings of first pin.In square frame 804, has the second voltage V
ADSecond source 326 (for example, an adapter or a universal serial bus device) can be selectively coupled in second pin 324.Switch 342 can be coupled between the second source 326 and second pin 324.
In square frame 806, can from least one first pattern and one second pattern, select a kind of pattern.What have advantage is that in first pattern, power conversion stage 302 receives the first voltage V at first pin, 314 places
BAT, and at second pin, 324 places generation step up voltage.In one embodiment, the step up voltage of generation is greater than the first voltage V
BATIn second pattern, power conversion stage 302 receives the second voltage V at second pin, 324 places
AD, and produce a step at first pin, 314 places and fall voltage, be used to 316 chargings of first power supply.In one embodiment, the step of generation is fallen voltage less than the second voltage V
AD
If select first pattern, in square frame 808, first power supply 316 will be an electric by second pin 324.If select second pattern, in square frame 810, second source 326 will be an electric by second pin 324.
Therefore, the invention provides a power-supply management system that can work in different mode.In such embodiment, can fall voltage or go on foot up voltage in step of the first pin place of power conversion stage generation by controller power controlling switching stage one of the second pin place of power conversion stage generation.Thus, second source (for example, an adapter or a universal serial bus device) can be first power supply (for example, battery pack) charging by power conversion stage.In one embodiment, even when first power source voltage was brought down below a minimum and requires system voltage, first power supply (for example, battery pack) can be the system load power supply via identical power conversion stage also.What have advantage is, does not need extra buck/boost converter in load system, can reduce the cost and because the power loss that extra buck/boost converter causes of power-supply management system like this.
Though before explanation and accompanying drawing have been described embodiments of the invention, be to be understood that under the prerequisite of spirit that does not break away from the principle of the invention that the appended claim book defined and invention scope, can have and variously augment, revise and replace.It should be appreciated by those skilled in the art that the present invention can change aspect form, structure, layout, ratio, material, element, assembly and other to some extent according to concrete environment and job requirement in actual applications under the prerequisite that does not deviate from the invention criterion.Therefore, only be illustrative rather than definitive thereof at the embodiment of this disclosure, the present invention's scope is defined by appended claim and legal equivalents thereof, and is not limited thereto preceding description.
Claims (24)
1. power-supply management system comprises:
A power conversion stage comprises first pin that is coupled with first power supply with first voltage, and comprises second pin selectively coupled with the second source with second voltage; And
A controller is coupled in described power conversion stage, can be used for from least one first pattern and one second pattern, selecting a kind of pattern,
Wherein in described first pattern, described power conversion stage receives described first voltage at the described first pin place, and produces the step up voltage at the described second pin place;
Wherein in described second pattern, described power conversion stage receives described second voltage at the described second pin place, and voltage falls in the step that is produced as described first power source charges at the described first pin place;
And wherein said step up voltage is greater than described first voltage, and the described step is fallen voltage less than described second voltage.
2. power-supply management system as claimed in claim 1 is characterized in that, described first power supply comprises a battery pack that contains at least one battery unit.
3. power-supply management system as claimed in claim 1 is characterized in that described second source comprises adapter.
4. power-supply management system as claimed in claim 1 is characterized in that described second source comprises universal serial bus device.
5. power-supply management system as claimed in claim 1 is characterized in that described power conversion stage comprises the inductance that is coupled in electric capacity.
6. power-supply management system as claimed in claim 1 is characterized in that, described step up voltage is greater than predetermined voltage.
7. power-supply management system as claimed in claim 1 is characterized in that, in described first pattern, described first power supply is an electric that is coupled in described second pin via described second pin.
8. power-supply management system as claimed in claim 1 is characterized in that, in described second pattern, described second source is an electric that is coupled in described second pin via described second pin.
9. power-supply management system as claimed in claim 1 is characterized in that, when described first voltage during less than predetermined voltage, described controller is selected described first pattern.
10. power-supply management system as claimed in claim 1 is characterized in that, also comprises:
Be coupled in the switch between described first power supply and the load, can be used for optionally described first power supply being coupled in described load,
Wherein said switch is controlled by described controller.
11. power-supply management system as claimed in claim 1 is characterized in that, also comprises:
Be coupled in the switch between described second source and described second pin, described switch can be used for described second source selectively coupled in described second pin,
Wherein said switch is controlled by described controller.
12. power-supply management system as claimed in claim 1 is characterized in that, described power conversion stage also comprises:
Be coupled in described second pin high-side switch and
Be coupled in the low side switch between described high-side switch and the ground,
And wherein said high-side switch and low side switch are controlled by described controller.
13. one kind is the method for electric, comprising:
First power supply with first voltage is coupled in first pin;
Second source with second voltage is selectively coupled in second pin; And
From at least one first pattern and one second pattern, select a kind of pattern;
Wherein in described first pattern, power conversion stage receives described first voltage and produces the step up voltage at the described second pin place at the described first pin place;
Wherein in described second pattern, voltage falls in the step that described power conversion stage receives described second voltage at the described second pin place and is produced as described first power source charges at the described first pin place;
And wherein said step up voltage is greater than described first voltage, and the described step is fallen voltage less than described second voltage.
14. method as claimed in claim 13 is characterized in that, also comprises:
In described first pattern, be electric via described second pin by described first power supply.
15. method as claimed in claim 13 is characterized in that, also comprises:
In described second pattern, be electric via described second pin by described second source.
16. method as claimed in claim 13 is characterized in that, described first power supply comprises a battery pack with at least one battery unit.
17. method as claimed in claim 13 is characterized in that, described second source comprises adapter.
18. method as claimed in claim 13 is characterized in that, described second source comprises universal serial bus device.
19. method as claimed in claim 13 is characterized in that, described power conversion stage comprises the inductance that is coupled in electric capacity.
20. an electronic equipment comprises:
Power conversion stage comprises with first pin of first power supply coupling with first voltage and comprises and have the second selectively coupled pin of second source of second voltage;
Be coupled in described second pin and selectively coupled in the load of described first pin;
A controller that is coupled in described power conversion stage, described controller can be used for from least one first pattern, select a kind of pattern in one second pattern and a three-mode,
Wherein in described first pattern, described power conversion stage receives described first voltage and is produced as the step up voltage of described electric at the described second pin place at the described first pin place;
Wherein in described second pattern, voltage falls in the step that described power conversion stage receives described second voltage at the described second pin place and is produced as described first power source charges at the described first pin place;
Wherein in described three-mode, described first power supply is described electric via described first pin;
And wherein said step up voltage is greater than described first voltage, and the described step is fallen voltage less than described second voltage.
21. electronic equipment as claimed in claim 20 is characterized in that, when described first voltage is selected described first pattern during less than reservation threshold, and selects described three-mode during greater than described reservation threshold when described first voltage.
22. electronic equipment as claimed in claim 20 is characterized in that, described first power supply comprises a battery pack with at least one battery unit.
23. electronic equipment as claimed in claim 20 is characterized in that, described second source comprises an adapter.
24. electronic equipment as claimed in claim 20 is characterized in that, described second source comprises a universal serial bus device.
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| Application Number | Priority Date | Filing Date | Title |
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| US85607506P | 2006-11-01 | 2006-11-01 | |
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| US11/906,920 | 2007-10-04 |
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| CNA2007101637765A Pending CN101202464A (en) | 2006-11-01 | 2007-11-01 | Power management system with charger and boost controller |
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| CN101668370A (en) * | 2008-07-15 | 2010-03-10 | 英特赛尔美国股份有限公司 | Transient suppression for boost regulator |
| CN102629825A (en) * | 2012-04-26 | 2012-08-08 | 厦门理挚半导体科技有限公司 | Circuit structure of realizing synchronous buck-type charging and boost-type power supply by using single inductor |
| CN102684271A (en) * | 2011-03-07 | 2012-09-19 | 联想(北京)有限公司 | Electronic device, power supply control chip and power supply control method |
| CN102832650A (en) * | 2011-06-13 | 2012-12-19 | 立锜科技股份有限公司 | Multipurpose power supply management device, charge path control circuit and control method of charge path control circuit |
| CN103560550A (en) * | 2013-11-29 | 2014-02-05 | 无锡中星微电子有限公司 | Device capable of simultaneously conducting power supplying and charging on mobile electronic device |
| CN104052089A (en) * | 2013-03-15 | 2014-09-17 | 苏州宝润电子科技有限公司 | Novel charging management circuit |
| CN104348202A (en) * | 2013-08-01 | 2015-02-11 | 快捷半导体(苏州)有限公司 | Charging control circuit and method and electronic device |
| CN104953648A (en) * | 2014-03-26 | 2015-09-30 | 英特赛尔美国有限公司 | Battery charge system with transition control that protects adapter components when transitioning from battery mode to adapter mode |
| CN105226791A (en) * | 2015-10-27 | 2016-01-06 | 江苏科技大学 | A kind of rechargeable three-dimensional printer |
| CN106549471A (en) * | 2015-09-17 | 2017-03-29 | 立隼半导体股份有限公司 | Management circuit |
| CN106605356A (en) * | 2014-09-02 | 2017-04-26 | 苹果公司 | Multi-phase battery charging with boost bypass |
| CN106712216A (en) * | 2017-02-28 | 2017-05-24 | 维沃移动通信有限公司 | Charging method and charging system |
| CN106787727A (en) * | 2017-01-25 | 2017-05-31 | 北京鸿智电通科技有限公司 | A kind of power path management circuit for being applied to charging quickly source |
| CN107787540A (en) * | 2015-06-24 | 2018-03-09 | 苹果公司 | The system and method for two-way dual-port battery charging with boost function |
| TWI685176B (en) * | 2014-03-26 | 2020-02-11 | 美商英特希爾美國公司 | Battery charge system, controller and method with transition control that protects adapter components when transitioning from battery mode to adapter mode |
| CN110854943A (en) * | 2018-08-21 | 2020-02-28 | 瑞萨电子美国有限公司 | System and method for providing a reverse boost mode in a battery charger application |
| US10778026B2 (en) | 2016-09-23 | 2020-09-15 | Apple Inc. | Multi-phase buck-boost charger |
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| CN101668370A (en) * | 2008-07-15 | 2010-03-10 | 英特赛尔美国股份有限公司 | Transient suppression for boost regulator |
| CN101668370B (en) * | 2008-07-15 | 2013-10-23 | 英特赛尔美国股份有限公司 | Transient suppression for boost regulator |
| CN102684271A (en) * | 2011-03-07 | 2012-09-19 | 联想(北京)有限公司 | Electronic device, power supply control chip and power supply control method |
| CN102832650A (en) * | 2011-06-13 | 2012-12-19 | 立锜科技股份有限公司 | Multipurpose power supply management device, charge path control circuit and control method of charge path control circuit |
| CN102629825A (en) * | 2012-04-26 | 2012-08-08 | 厦门理挚半导体科技有限公司 | Circuit structure of realizing synchronous buck-type charging and boost-type power supply by using single inductor |
| CN104052089A (en) * | 2013-03-15 | 2014-09-17 | 苏州宝润电子科技有限公司 | Novel charging management circuit |
| CN104348202A (en) * | 2013-08-01 | 2015-02-11 | 快捷半导体(苏州)有限公司 | Charging control circuit and method and electronic device |
| CN103560550A (en) * | 2013-11-29 | 2014-02-05 | 无锡中星微电子有限公司 | Device capable of simultaneously conducting power supplying and charging on mobile electronic device |
| CN104953648B (en) * | 2014-03-26 | 2018-02-06 | 英特赛尔美国有限公司 | Batter-charghing system and the controller and method for controlling it |
| CN104953648A (en) * | 2014-03-26 | 2015-09-30 | 英特赛尔美国有限公司 | Battery charge system with transition control that protects adapter components when transitioning from battery mode to adapter mode |
| TWI685176B (en) * | 2014-03-26 | 2020-02-11 | 美商英特希爾美國公司 | Battery charge system, controller and method with transition control that protects adapter components when transitioning from battery mode to adapter mode |
| CN106605356B (en) * | 2014-09-02 | 2019-03-08 | 苹果公司 | It is charged using the multiphase battery of boosting bypass |
| CN106605356A (en) * | 2014-09-02 | 2017-04-26 | 苹果公司 | Multi-phase battery charging with boost bypass |
| CN107787540A (en) * | 2015-06-24 | 2018-03-09 | 苹果公司 | The system and method for two-way dual-port battery charging with boost function |
| US10673260B2 (en) | 2015-06-24 | 2020-06-02 | Apple Inc. | Systems and methods for bidirectional two-port battery charging with boost functionality |
| CN106549471A (en) * | 2015-09-17 | 2017-03-29 | 立隼半导体股份有限公司 | Management circuit |
| CN106549471B (en) * | 2015-09-17 | 2021-11-05 | 戴洛格半导体（英国）有限公司 | Power management circuit |
| CN105226791A (en) * | 2015-10-27 | 2016-01-06 | 江苏科技大学 | A kind of rechargeable three-dimensional printer |
| US10778026B2 (en) | 2016-09-23 | 2020-09-15 | Apple Inc. | Multi-phase buck-boost charger |
| CN106787727A (en) * | 2017-01-25 | 2017-05-31 | 北京鸿智电通科技有限公司 | A kind of power path management circuit for being applied to charging quickly source |
| CN106712216A (en) * | 2017-02-28 | 2017-05-24 | 维沃移动通信有限公司 | Charging method and charging system |
| CN106712216B (en) * | 2017-02-28 | 2019-07-26 | 维沃移动通信有限公司 | A kind of charging method and charging system |
| CN110854943A (en) * | 2018-08-21 | 2020-02-28 | 瑞萨电子美国有限公司 | System and method for providing a reverse boost mode in a battery charger application |
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