CN105529944A - Power adapter and electronic system using same - Google Patents
Power adapter and electronic system using same Download PDFInfo
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- CN105529944A CN105529944A CN201510507674.5A CN201510507674A CN105529944A CN 105529944 A CN105529944 A CN 105529944A CN 201510507674 A CN201510507674 A CN 201510507674A CN 105529944 A CN105529944 A CN 105529944A
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Abstract
The embodiment of the invention discloses a power adapter and an electronic system applying the same. The power adapter comprises a power conversion circuit, a control unit and a detection unit. The power conversion circuit is used for converting an alternating current power supply into a direct current power supply to be provided for the electronic device. The control unit is used for controlling the operation of the power supply conversion circuit according to the load detection signal. The detection unit generates a load detection signal according to the working state of the electronic device. When the detection unit judges that the working state is the first state, the detection unit sends out a load detection signal indicating the first state, so that the control unit stops the operation of the power supply conversion circuit. When the detection unit judges that the working state is the second state, the detection unit sends out a load detection signal indicating the second state, so that the control unit controls the power supply conversion circuit to output the first direct-current power supply. The technical scheme of the embodiment of the invention can adaptively adjust the direct-current power supply provided by the power adapter according to the working state of the electronic device.
Description
Technical field
The invention relates to a kind of power converter topology, and relate to a kind of power-supply adapter especially and apply its electronic system.
Background technology
In existing electronics applications, to use the AC power such as civil power to originate as the power supply of electronic installation, use power-supply adapter usually can be needed AC power to be converted to DC power supply and to use to be supplied to electronic installation.
For power-supply adapter, its DC power supply normally AC power being converted to a constant power uses to be supplied to electronic installation.Even if when power-supply adapter is not connected to electronic installation, in order to power at any time, as long as power-supply adapter is connected to outside AC power, then namely the control circuit of power-supply adapter and power component can maintain mode of operation, making power-supply adapter when no matter whether, when connection of electronic devices, still has certain power consumption (this power consumption is referred to as no load power).
On the other hand, for the charging controlling mechanism of electronic installation, charging current except when too high or too low for temperature and battery is abnormal can be downgraded except, be under general condition all preset as fixing.Furthermore, in order to make electronic installation can charging complete at short notice, the current value setting of general charging current all can be higher.But it is very fast that the higher shortcoming of charging current is to cause battery cycle life to fail, and make charging process produce higher safety issue.Therefore, under the prerequisite how required in the charging interval meeting user, the useful life simultaneously taking into account battery module is considered, is namely a problem to be solved.
Summary of the invention
The invention provides a kind of power-supply adapter and apply its electronic system, it can adjust according to the operating state of electronic installation the DC power supply that power-supply adapter provides adaptively.
Power-supply adapter of the present invention is used for coupling with electronic installation, and electronic installation comprises the first power connector end and first and detects link.Power-supply adapter comprises power-switching circuit, control unit and detecting unit.Power-switching circuit has second source link, and second source link is connected with the first power connector end of electronic installation.Power-switching circuit is in order to be converted to DC power supply to be supplied to electronic installation by AC power.Detecting unit has the second detection link, and the second detection link detects link with first of electronic installation and is connected.Detecting unit in order to the operating state of detection. electronics, so as to according to operating state produce load detection signal.Control unit couples detecting unit and receives load detection signal, and in order to control the operation of power-switching circuit according to load detection signal.When detecting unit judges that operating state is the first state, detecting unit sends the load detection signal of instruction first state, stops the operation of power-switching circuit so as to making control unit according to load detection signal.When detecting unit judges that operating state is the second state, detecting unit sends the load detection signal of instruction second state, controls power-switching circuit export the first DC power supply so as to making control unit according to load detection signal.
In an embodiment of the present invention, when detecting unit judges that electronic installation is not connected to power-supply adapter, detecting unit judges that operating state is as the first state, and when detecting unit judges that electronic installation is connected to power-supply adapter, detecting unit judges that operating state is as the second state.
In an embodiment of the present invention, whether the battery module of detecting unit detection. electronics is in charging complete state, if battery module is in charging complete state, detecting unit judges that operating state is as the first state.
In an embodiment of the present invention, when detecting unit judges that operating state is the third state, detecting unit sends the load detection signal of the instruction third state, control power-switching circuit so as to making control unit according to load detection signal and export the second DC power supply, wherein the power of the second DC power supply is lower than the power of the first DC power supply.
In an embodiment of the present invention, when detecting unit judges that the battery module of electronic installation is in state in charging, detecting unit judges that operating state is as the second state, and when detecting unit judges that the battery module of electronic installation is in charging complete state, detecting unit judges that operating state is as the third state.
Electronic system of the present invention comprises electronic installation and power-supply adapter.Electronic installation comprises the first power connector end and first and detects link.Power-supply adapter comprises power-switching circuit, control unit and detecting unit.Power-switching circuit has second source link, and second source link is connected with the first power connector end of electronic installation.Power-switching circuit is in order to be converted to DC power supply to be supplied to electronic installation by AC power.Detecting unit has the second detection link, and the second detection link detects link with first of electronic installation and is connected.Detecting unit in order to the operating state of detection. electronics, so as to according to operating state produce load detection signal.Control unit couples detecting unit and receives load detection signal, and in order to control the operation of power-switching circuit according to load detection signal.When detecting unit judges that operating state is the first state, detecting unit sends the load detection signal of instruction first state, stops the operation of power-switching circuit so as to making control unit according to load detection signal.When detecting unit judges that operating state is the second state, detecting unit sends the load detection signal of instruction second state, controls power-switching circuit export the first DC power supply so as to making control unit according to load detection signal.
Whether the battery module of power-supply adapter detection. electronics is in charging complete state in an embodiment of the present invention, if battery module is in charging complete state, power-supply adapter stops providing DC power supply to give electronic installation.
In an embodiment of the present invention, be connected to the configuration of power-supply adapter at electronic installation under, when detecting unit detects that the battery module of electronic installation is in state in charging, power-switching circuit exports the first DC power supply and gives electronic installation to provide, and when detecting unit detects that the battery module of electronic installation is in charging complete state, power-switching circuit exports the second DC power supply and gives electronic installation to provide, and wherein the power of the second DC power supply is lower than the power of the first DC power supply.
In an embodiment of the present invention, electronic installation comprises battery module, power-supply controller of electric and load indicating circuit.Power-supply controller of electric couples battery module, in order to the power supply supply of the discharge and recharge behavior and electronic installation that control battery module.Load indicating circuit couples power-supply controller of electric.Load indicating circuit is controlled by power-supply controller of electric and adjusts equiva lent impedance, so as to indicating the operating state of electronic installation.
In an embodiment of the present invention, load indicating circuit comprises the first resistance, the second resistance and switching transistor.The first end of the first resistance couples the first detection link, and the second end of the first resistance couples earth terminal.The first end of the second resistance couples the first end of the first resistance.The first end of switching transistor couples the second end of the second resistance, and the second end of switching transistor couples earth terminal, and the control end of switching transistor couples power-supply controller of electric.
In an embodiment of the present invention, electronic installation also comprises charge mode interface switching.Charge mode interface switching, couples power-supply controller of electric, produces switching signal be supplied to power-supply controller of electric through control, and wherein power-supply controller of electric is fast mold filling formula or trickle charge pattern according to switching signal setting electronic installation.
In an embodiment of the present invention, when electronic installation is set to fast mold filling formula, power-supply controller of electric exports the first working power according to the first DC power supply received, and when electronic installation is set to trickle charge pattern, power-supply controller of electric exports the second working power according to the first DC power supply of receiving, and wherein the size of current of the second working power is lower than the size of current of the first working power.
Based on above-mentioned, the embodiment of the present invention proposes a kind of power-supply adapter and applies its electronic system.Described power-supply adapter can the operating state of detection. electronics, and adjusts the DC power supply produced according to this adaptively, causes meaningless power dissipation so as to avoiding when not using power-supply adapter, thus obtains higher for electrical efficiency.In addition, the electronic installation of the embodiment of the present invention provides the charge mode interface switching that is available for users to regulate and control voluntarily charging rate, make user according to its application situation to adjust the charging rate of electronic installation, thus the useful life of battery module can be extended.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing to be described in detail below.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the electronic system of one embodiment of the invention;
Fig. 2 is the circuit framework schematic diagram of the electronic system of one embodiment of the invention.
Embodiment
In order to make content of the present invention more easily be understood, below especially exemplified by the example that embodiment can be implemented really according to this as the present invention.In addition, all possibility parts, use the element/component/step of identical label, represent identical or like in drawings and the embodiments.
Fig. 1 is the schematic diagram of the electronic system of one embodiment of the invention.Please refer to Fig. 1, the electronic system 100 of the present embodiment comprises electronic installation 110 and power-supply adapter 120.Wherein, described electronic installation 110 can be such as the electronic installations such as notebook computer, panel computer, handheld game device and intelligent mobile phone.AC power AC_in (be such as civil power, but be not restricted to this) from external reception can be converted to DC power supply DC_out and use to be supplied to electronic installation 110 by power-supply adapter 120.Electronic installation 110 can make further Power convert based on the DC power supply DC_out received from power-supply adapter 120, the charge power supply needed for charging so as to the working power needed for generation Dynamic System and to the battery module (not shown) of electronic installation 110.
In the present embodiment, power-supply adapter 120 comprises power-switching circuit 122, control unit 124 and detecting unit 126.Power-switching circuit 122 is in order to carry out Power convert action to received AC power AC_in at the present embodiment, and produces DC power supply DC_out according to this to be supplied to electronic installation 110.In this, the circuit topology kenel of described power-switching circuit 122 can be forward type (Forward) power-switching circuit, flyback (Flyback) power-switching circuit, semibridge system (ActiveClampandHalfBridge) power-switching circuit, full-bridge type (ActiveClampandFullBridge) power-switching circuit or push-pull type (Push-Pull) power-switching circuit, but is not restricted to this.All belong to association area of the present invention about the framework of above-mentioned various power-switching circuit and mode of operation and there is the technology usually knowing that the knowledgeable knows well, thus no longer repeated it at this.
Control unit 124 couples power-switching circuit 122.Control unit 124 can receive the load detection signal S_LD that detecting unit 126 sends, and produces according to load detection signal S_LD the operation that corresponding control signal (being such as pulse-width signal) controls power-switching circuit 122.For example, the responsibility cycle of the control signal that control unit 124 can export according to load detection signal S_LD adjustment, so as to controlling the switching of the power switch (not shown) of power-switching circuit 122 inside.The voltage swing of the DC power supply DC_out that so power-switching circuit 122 just can be made to export according to demand for control adjustment.
Detecting unit 126 couples control unit 124, and in order to the operating state of detection. electronics 110, such as not-connected status or off-mode, battery charging state, normal operating conditions (S0), holding state (S3), sleep state (S4) or resting state (S5).Wherein, detecting unit 126 can produce corresponding load detection signal S_LD to control unit 124 according to the difference of the operating state of electronic installation 110, so as to indicating the actual power demand of electronic installation 110.Therefore, control unit 124 can provide corresponding DC power supply DC_out according to the actual power demand of electronic installation 110, thus avoids the waste of power.
With regard to the design aspect of power-supply adapter 120, in an exemplary embodiment, detecting unit 126 can detect power-supply adapter 120 and whether be connected to electronic installation 110, and be connected to electronic installation 110 (the first state) with under the two kinds of operating states not being connected to electronic installation 110 (the second state) at power-supply adapter 120 respectively, produce corresponding load detection signal S_LD.For example, when detecting unit 126 judges that electronic installation 110 is not connected to power-supply adapter 120, control unit 124 can receive the load detection signal S_LD that instruction power-supply adapter 120 is not connected to electronic installation 110, makes control unit 124 stop the Power convert of power-switching circuit 122 to operate.On the contrary, when detecting unit 126 judges that electronic installation 110 has been connected to power-supply adapter 120, control unit 124 can receive the load detection signal S_LD that instruction power-supply adapter 120 has been connected to electronic installation 110, makes control unit 124 provide the control signal of a correspondence to operate required DC power supply DC_out to make power-switching circuit 122 generation meet electronic installation 110.
In another exemplary embodiment, be connected to the configuration of power-supply adapter 120 at electronic installation 110 under, detecting unit 126 further can detect operating state/operator scheme that electronic installation 110 is current, so as to producing corresponding load detection signal S_LD based on current operating state/operator scheme.For example, when detecting unit 126 judges that the battery module (not shown) of electronic installation 110 is in state in charging, because the DC power supply DC_out that now power-supply adapter 120 provides need supply electronic installation 110 as Dynamic System and charging use simultaneously, therefore now detecting unit 126 can send the load detection signal S_LD that pilot cell module is in state in charging, provides the control signal of a correspondence to export the first higher DC power supply of a power (such as determining voltage 19V) to make power-switching circuit 122 so as to making control unit 124.On the contrary, when detecting unit 126 judges that the battery module of electronic installation 110 is in charging complete state, because now electronic installation 110 has not needed again to charging battery module, and only need that received DC power supply DC_out is converted to working power to system and use, therefore now detecting unit 126 can send the load detection signal S_LD of pilot cell module charging complete, there is provided the control signal of a correspondence to make power-switching circuit 122 power output lower than the one second DC power supply power output (such as determining voltage 12V) of the first DC power supply so as to making control unit 124, thus the power loss that reduction Power convert may cause.
In another exemplary embodiment, the configuration of described electronic system 100 also can be applicable in the battery module test of factory's end.More particularly, in the method for testing of the battery module of traditional electronic installation, need by power-supply adapter battery module filled full after, more manually pull out power-supply adapter by tester, so as to recording the discharge scenario of battery module.In comparison, in the electronic system 100 of the embodiment of the present invention, electronic installation 110 can have battery study (batterylearning) pattern through design.When electronic installation 110 is set to battery mode of learning, the detecting unit 126 of power-supply adapter 120 can detect battery module and whether be in charging complete state.If battery module is in charging complete state, namely detecting unit 126 can send the load detection signal S_LD of pilot cell module charging complete, so as to the operation making control unit 124 stop power-switching circuit 122, power-supply adapter 120 is made no longer to power (now, detecting unit 126 judges that operating state is as the first state) to electronic installation 110.Otherwise, if battery module is in state in charging, then detecting unit 126 can send pilot cell module load detection signal S_LD still in charging, provides the control signal of a correspondence to charge and DC power supply DC_out needed for operating to make power-switching circuit 122 export electronic installation 110 so as to making control unit 124.
With regard to the Energy control Mechanism Design of electronic installation 110, in an exemplary embodiment, electronic installation 110 also can be provided with a charge mode interface switching (not shown) being available for users to control, so as to realizing the switching of fast mold filling formula and trickle charge pattern.Wherein, described charge mode interface switching realizes by the mode of software or hardware, and the present invention is not as limit.
More particularly, when electronic installation to be set as fast mold filling formula by user by charge mode interface switching, electronic installation 110 can carry out the first larger working power of output current using the use as charging battery module according to the DC power supply DC_out received.Otherwise when electronic installation 110 is set to trickle charge pattern, electronic installation 110 can carry out the second less working power of output current using the use as charging battery module according to the DC power supply DC_out received.In other words, user can according to its user demand, from the charging rate of Row sum-equal matrix battery module, so as to extending the useful life of battery module.Such as, during user's sleep or during for a long time not using electronic installation, switch to trickle charge pattern to charge electronic devices, and during other with fast mold filling formula to charge electronic devices.
On the other hand, the just configuration of overall electronic system 100, the power-switching circuit 122 of power-supply adapter 120 with detect side unit 126 and understand and be connected with electronic installation 110 via different circuits respectively.Electronic installation 110 has the first power connector end and first and detects link.Power-switching circuit 122 with detect side unit 126 and there is second source link and second respectively detect link.In the present embodiment, the first power connector end and second source link are all represent with P_PWR, and are hereinafter all referred to as with power connector end.It is then represent with P_T that first detection link and second detects link, and is hereinafter all referred to as to detect link.Power-switching circuit 122 can be connected with electronic installation 110 by power connector end P_PWR, provides DC power supply DC_out thereby through power connector end P_PWR.Detecting unit 126 can be connected with electronic installation 110 by detecting link P_T, detects/extract the operating state of electronic installation 110 thereby through detection link P_T.
In order to be illustrated more clearly in the power-supply adapter 100 of the embodiment of the present invention, the beneath hardware structure with electronic system 200 illustrated in fig. 2 is described.Wherein, Fig. 2 is the circuit framework schematic diagram of the electronic system of one embodiment of the invention.Please refer to Fig. 2, the electronic system 200 of the present embodiment comprises electronic installation 210 and power-supply adapter 220.Wherein, electronic installation 210 comprises battery module 212, power-supply controller of electric 214, load indicating circuit 216 and charge mode interface switching 218.Power-supply adapter 220 comprises power-switching circuit 222, control unit 224 and detecting unit 226.
In the electronic installation 210 of the present embodiment, power-supply controller of electric 214 couples other functional modules (not shown, such as, to be mainboard, video card etc.) of battery module 212 and electronic installation 210 inside.Wherein, power-supply controller of electric 214, in order to the power supply supply of the discharge and recharge behavior and electronic installation 210 that control battery module 212, can normally operate so as to making each functional module.In actual applications, described power-supply controller of electric 214 can such as form with embedded controller (embeddedcontroller, EC) and battery charger (batterycharger), but the present invention is not limited only to this.
Load indicating circuit 216 couples power-supply controller of electric 214, and is controlled by power-supply controller of electric 214 and adjusts an equiva lent impedance, so as to indicating the operating state of electronic installation 210.Wherein, described load indicating circuit 216 can such as be made up of resistance Rd1 and Rd2 and switching transistor SW.Resistance Rd1 is coupled between the detection link P_T of electronic installation 210 and grounding connection end P_GND.Resistance Rd2 is coupled between the detection link P_T of electronic installation 210 and the first end of switching transistor SW.The two ends of switching transistor SW are coupled between resistance Rd2 and earth terminal GND, and the control end of switching transistor SW couples power-supply controller of electric 214.
Specifically, power-supply controller of electric 214 can detect the charged state of battery module 212, and send the switching transistor SW of charging status signal S_CHG to load indicating circuit 216 of a correspondence, make switching transistor SW react on charging status signal S_CHG and switch its conducting state, thus the equiva lent impedance of control load indicating circuit 216.By the mode of this regulation and control load indicating circuit 216, namely the detecting unit 226 of power-supply adapter 220 judges by detecting the equiva lent impedance size of load indicating circuit 216 operating state that electronic installation 210 is current, and produces corresponding load detection signal S_LD1 and S_LD2 accordingly.
Charge mode interface switching 218 can such as realize with the diverter switch of entity, and power-supply controller of electric 214 can react on the switching of diverter switch and provide different charging current IS to battery module 212.
On the other hand, in the power-supply adapter 220 of the present embodiment, power-switching circuit 222 can such as be made up of resistance Ri, electric capacity Ci and Co, transformer T1, power switch PSW and output-stage circuit OSC.The first end of resistance Ri receives an input voltage vin (produced by the rectifying circuit (not shown) of prime).Second end of the first end coupling resistance Ri of electric capacity Ci, and second end of electric capacity Ci couples earth terminal GND.The primary side of transformer T1 couples the first end of input voltage vin and power switch PSW, and the secondary side of transformer T1 couples the input of output-stage circuit OSC.Between the primary side being serially connected with transformer T1 of power switch PSW and earth terminal GND, and the control end of power switch PSW couples control unit 224 with reception control signal DRI.The two ends of electric capacity Co are connected to the output of output-stage circuit OSC, and described two ends are coupled to power connector end P_PWR and the grounding connection end P_GND of power-supply adapter 220 respectively.
Control unit 224 such as realizes (beneath represent it with control chip 224) with control chip in this.Wherein, control chip 224 has pin position P_VCC, P_VDD, P_DRI, P_STBY and P_LFM.The pin position P_VCC of control chip 224 is coupled to the conode of resistance Ri and electric capacity Ci to receive input voltage vin.The pin position P_VDD of control chip 224 couples earth terminal GND.The pin position P_DRI of control chip 224 is coupled to the control end of power switch PSW, in order to provide control signal DRI.Pin position P_STBY and the P_LFM of control chip 224 couples detecting unit 226 respectively, in order to receive load detection signal S_LD1 and the S_LD2 of the operating state testing result of instruction electronic installation 210.In the present embodiment, load detection signal S_LD1 and the S_LD2 that control chip 224 can receive based on pin position P_STBY and P_LFM adjusts the control signal DRI that pin position P_DRI exports, so as to controlling the switching frequency/responsibility cycle of power switch PSW, thus the output voltage Vout that regulation and control power-switching circuit 222 exports.
The input of detecting unit 226 is coupled to the detection link P_T of power-supply adapter 220, and is suitable for the load indicating circuit 216 being coupled to electronic installation 210 by detecting link P_T.Wherein, detecting unit 226 can detect the equiva lent impedance change of load indicating circuit 216, and produces corresponding load detection signal S_LD1 and S_LD2 according to this to control chip 224.
More particularly, be not connected to the configuration of electronic installation 210 at power-supply adapter 220 under, detecting unit 226 can detect that the detection link P_T of power-supply adapter 220 is for open circuit, and produce the load detection signal S_LD1 of low level (low) according to this, make control chip 224 react on low level load detection signal S_LD1 and stop exporting control signal DRI and (but be not limited only to this, in other embodiments, can also the load detection signal S_LD1 of high level (high) indicate stop exporting control signal DRI).Thus, power switch PSW and the transformer T1 of power-switching circuit 222 just can quit work, and make power-supply adapter 220 stop exporting output voltage Vout.In other words, under this state, overall power-switching circuit 222 is the state being in shut-down operation substantially, only has detecting unit 226 to detect constantly, and therefore the power loss of power-supply adapter 220 can decline significantly.
Be connected to the configuration of electronic installation 210 at power-supply adapter 220 under, detecting unit 226 can detect the equiva lent impedance size of load indicating circuit 216.Wherein, if battery module 212 is in the state (such as S3, S4, S5 state) that charging complete state or electronic installation 210 operate in low power consumption, then power-supply controller of electric 214 can send low level charging status signal S_CHG, and switching transistor SW is ended.Now load indicating circuit 216 can be equivalent to resistance Rd1, and detecting unit 226 is detected, and the equiva lent impedance of load indicating circuit 216 is the resistance value of resistance Rd1.In the case, detecting unit 226 can send the load detection signal S_LD1 of high level and low level load detection signal S_LD2, make control chip 224 react on load detection signal S_LD1 and S_LD2 and produce corresponding control signal DRI, export lower output voltage Vout (being such as 12V) to make power-switching circuit 222 react on control signal DRI.
On the other hand, if when battery module 212 is in that in charging, state or electronic installation 210 operate in heavy duty, power-supply controller of electric 214 can send the charging status signal S_CHG of high level, switching transistor SW conducting is made (but to be not limited only to this, in other embodiments, can also low level charging status signal S_CHG carry out control switch transistor SW conducting).Now to be equivalent to resistance Rd1 in parallel with resistance Rd2 for load indicating circuit 216, and detecting unit 226 is detected, and the equiva lent impedance of load indicating circuit 216 is the parallel resistance value of resistance Rd1 and Rd2.In the case, detecting unit 226 can send load detection signal S_LD1 and the S_LD2 of high level, make control chip 224 react on load detection signal S_LD1 and S_LD2 and produce corresponding control signal DRI, export higher output voltage Vout (being such as 19V) to make power-switching circuit 222 react on control signal DRI.
It is worth mentioning that in addition, electronic system 100 illustrated in fig. 2 is only signal, and it also can increase other circuit elements newly according to design requirement.For example, the detection link P_T inside of electronic installation 210 also can be provided with extra protection component, damages because of static discharge effect (electrostaticdischarge, ESD) so as to preventing other elements of electronic installation 210 inside.
In sum, the embodiment of the present invention proposes a kind of power-supply adapter and applies its electronic system.Described power-supply adapter can the operating state of detection. electronics, and adjusts the DC power supply exported according to this adaptively, causes meaningless power dissipation so as to avoiding when not using power-supply adapter, thus obtains higher for electrical efficiency.In addition, the electronic installation of the embodiment of the present invention provides the charge mode interface switching that is available for users to regulate and control voluntarily charging rate, make user according to its application situation to adjust the charging rate of electronic installation, thus the useful life of battery module can be extended.
Although the present invention with embodiment openly as above; but itself and be not used to limit the present invention; any those of ordinary skill in art; without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on the claim person of defining.
Claims (12)
1. a power-supply adapter, for coupling with electronic installation, described electronic installation comprises the first power connector end and first and detects link, and it is characterized in that, described power-supply adapter comprises:
Power-switching circuit, has second source link, and described second source link is connected with described first power connector end of described electronic installation, and described power-switching circuit is in order to be converted to DC power supply to be supplied to described electronic installation by AC power;
Detecting unit, there is the second detection link, described second detects link detects link with described first of described electronic installation and is connected, wherein said detecting unit in order to detect the operating state of described electronic installation, so as to according to described operating state generation load detection signal; And
Control unit, couple described detecting unit and receive described load detection signal, in order to control the operation of described power-switching circuit according to described load detection signal, wherein, when described detecting unit judges that described operating state is the first state, described detecting unit sends the described load detection signal indicating described first state, the operation of described power-switching circuit is stopped according to described load detection signal so as to making described control unit, when described detecting unit judges that described operating state is the second state, described detecting unit sends the described load detection signal indicating described second state, control described power-switching circuit so as to making described control unit according to described load detection signal and export the first DC power supply.
2. power-supply adapter according to claim 1, it is characterized in that, when described detecting unit judges that described electronic installation is not connected to described power-supply adapter, described detecting unit judges that described operating state is as described first state, when described detecting unit judges that described electronic installation is connected to described power-supply adapter, described detecting unit judges that described operating state is as described second state.
3. power-supply adapter according to claim 1, it is characterized in that, whether the battery module that described detecting unit detects described electronic installation is in charging complete state, if described battery module is in described charging complete state, described detecting unit judges that described operating state is as described first state.
4. power-supply adapter according to claim 1, it is characterized in that, when described detecting unit judges that described operating state is the third state, described detecting unit sends the described load detection signal of the described third state of instruction, control described power-switching circuit so as to making described control unit according to described load detection signal and export the second DC power supply, the power of wherein said second DC power supply is lower than the power of described first DC power supply.
5. power-supply adapter according to claim 4, it is characterized in that, when described detecting unit judges that the battery module of described electronic installation is in state in charging, described detecting unit judges that described operating state is as described second state, and when described detecting unit judges that the described battery module of described electronic installation is in charging complete state, described detecting unit judges that described operating state is as the described third state.
6. an electronic system, is characterized in that, comprising:
Electronic installation, described electronic installation comprises the first power connector end and first and detects link; And
Power-supply adapter, comprising:
Power-switching circuit, has second source link, and described second source link is connected with described first power connector end of described electronic installation, and described power-switching circuit is in order to be converted to DC power supply to be supplied to described electronic installation by AC power;
Detecting unit, there is the second detection link, described second detects link detects link with described first of described electronic installation and is connected, wherein said detecting unit in order to detect the operating state of described electronic installation, so as to according to described operating state generation load detection signal; And
Control unit, couple described detecting unit and receive described load detection signal, in order to control the operation of described power-switching circuit according to described load detection signal, wherein, when described detecting unit judges that described operating state is the first state, described detecting unit sends the described load detection signal indicating described first state, the operation of described power-switching circuit is stopped according to described load detection signal so as to making described control unit, when described detecting unit judges that described operating state is the second state, described detecting unit sends the described load detection signal indicating described second state, control described power-switching circuit so as to making described control unit according to described load detection signal and export the first DC power supply.
7. electronic system according to claim 6, it is characterized in that, whether the battery module that described power-supply adapter detects described electronic installation is in charging complete state, if described battery module is in described charging complete state, described power-supply adapter stops providing described DC power supply to give described electronic installation.
8. electronic system according to claim 6, it is characterized in that, be connected to the configuration of described power-supply adapter at described electronic installation under, when described detecting unit detects that the battery module of described electronic installation is in state in charging, described power-switching circuit exports described first DC power supply and gives described electronic installation to provide, and when described detecting unit detects that the described battery module of described electronic installation is in charging complete state, described power-switching circuit exports the second DC power supply and gives described electronic installation to provide, the power of wherein said second DC power supply is lower than the power of described first DC power supply.
9. electronic system according to claim 6, is characterized in that, described electronic installation comprises:
Battery module;
Power-supply controller of electric, couples described battery module, in order to the power supply supply of the discharge and recharge behavior and described electronic installation that control described battery module; And
Load indicating circuit, couples described power-supply controller of electric, is controlled by described power-supply controller of electric and adjusts equiva lent impedance, so as to indicating the described operating state of described electronic installation.
10. electronic system according to claim 9, is characterized in that, described load indicating circuit comprises:
First resistance, its first end couples described first and detects link, and its second end couples earth terminal;
Second resistance, its first end couples the first end of described first resistance; And
Switching transistor, its first end couples the second end of described second resistance, and its second end couples described earth terminal, and its control end couples described power-supply controller of electric.
11. electronic systems according to claim 9, is characterized in that, described electronic installation also comprises:
Charge mode interface switching, couples described power-supply controller of electric, produces switching signal be supplied to described power-supply controller of electric through control, and it is fast mold filling formula or trickle charge pattern that wherein said power-supply controller of electric sets described electronic installation according to described switching signal.
12. electronic systems according to claim 11, it is characterized in that, when described electronic installation is set to described fast mold filling formula, described power-supply controller of electric exports the first working power according to described first DC power supply received, and when described electronic installation is set to described trickle charge pattern, described power-supply controller of electric exports the second working power according to described first DC power supply received, and the size of current of wherein said second working power is lower than the size of current of described first working power.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103136138A TW201616771A (en) | 2014-10-20 | 2014-10-20 | Power adapter and electronic system using the same |
| TW103136138 | 2014-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105529944A true CN105529944A (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510507674.5A Pending CN105529944A (en) | 2014-10-20 | 2015-08-18 | Power adapter and electronic system using same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105529944A (en) |
| TW (1) | TW201616771A (en) |
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| CN111143137A (en) * | 2018-11-05 | 2020-05-12 | 广达电脑股份有限公司 | System load detection device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SG11201907234TA (en) * | 2017-02-16 | 2019-09-27 | Razer Asia Pacific Pte Ltd | Power supply circuits, wearable devices and methods for providing power supply to a wearable device |
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Also Published As
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| TW201616771A (en) | 2016-05-01 |
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