CN101281419A - Power supply module of computer device - Google Patents

Power supply module of computer device Download PDF

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Publication number
CN101281419A
CN101281419A CNA2007100968243A CN200710096824A CN101281419A CN 101281419 A CN101281419 A CN 101281419A CN A2007100968243 A CNA2007100968243 A CN A2007100968243A CN 200710096824 A CN200710096824 A CN 200710096824A CN 101281419 A CN101281419 A CN 101281419A
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CN
China
Prior art keywords
power
computer
power supply
transistor
unit
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Application number
CNA2007100968243A
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Chinese (zh)
Inventor
施博元
Original Assignee
英业达股份有限公司
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Publication date
Application filed by 英业达股份有限公司 filed Critical 英业达股份有限公司
Priority to CNA2007100968243A priority Critical patent/CN101281419A/en
Publication of CN101281419A publication Critical patent/CN101281419A/en

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Abstract

The invention discloses a power supply module of a computer device. The power supply module comprises a power unit, a transfer unit and a switch unit. The power unit is provided with a control terminal, a first power terminal and a second power terminal. Wherein, the control terminal receives a control signal to make the power unit determine if supplying working power from the first power terminal and the second power terminal to a computer system according to the control signal. The transfer unit determines the state of the control signal according to if the computer system is started. The switch unit is used for determining if the computer system is started. Thereby, the invention can effectively solve consumption problem of battery capacity and increase using time of the battery.

Description

The power supply module of computer apparatus

Technical field

The invention relates to a kind of power supply module of computer apparatus, and particularly relevant for a kind of power supply module that increases computer battery stand-by time when shutting down.

Background technology

Notebook computer is light and handy and easy to carry, makes utilization rate day by day popularize.In order to reach the purpose that is easy to carry and uses, providing of battery electric quantity promptly seems extremely important.Therefore, the user generally under obsolete situation, closes the power supply (Power) of notebook computer to avoid the consumes battery electric weight.Yet, even under the situation of power-off, because the circuit loop characteristic still can't be cut off powered battery fully.Therefore, can't avoid notebook computer behind power-off, to stop the situation generation that power supply continues power consumption.

When battery is put into notebook computer, system power supply can continual power consumption.If AC transformer this moment (AC Adapter) is not inserted main frame, general notebook computer is not as long as one used by two months, and promptly (Integrated Circuit's battery electric quantity IC) is exhausted by internal integrated circuit.So can cause trouble on using, and serviceable life of decay battery.

Fig. 1 illustrates the calcspar into existing computer apparatus.Please refer to Fig. 1, this computer apparatus 100 comprises power switch 101, battery 110, keyboard controller 120 and computer system 130, and wherein battery 110 also comprises control end 111, positive power source terminal 112 and negative power end 113.As seen from Figure 1, the positive power source terminal 112 of battery 110 is connected with computer system 130 with negative power end 113, and forms a loop.Even when the power-off of computer system 130, battery 110 still is a continued power.Though it is fast that consumption of electric does not consume when computer system 130 starts, the electric weight of battery 110 is still consuming continuously, is consumed up to electric weight to finish.Therefore, shorten and reduce the stand-by time of battery 110 service time of computer system 130, cause not convenient in the use.

Summary of the invention

Purpose of the present invention is exactly a kind of power supply module of computer apparatus to be provided, can to reduce the unnecessary electricity loss, and then increases the stand-by time of computer battery when shutdown, and prolongs the serviceable life of battery.

The present invention proposes a kind of power supply module that is applicable to computer system.This power supply module comprises power supply unit, switch unit and switch element.Power supply unit has control end, first power end and second source end, and wherein this control end receives control signal, makes that power supply unit determines according to above-mentioned control signal whether to give computer system from first power end and second source end supply working power.Whether switch unit starts according to computer system and determines the state of control signal.Whether switch element couples switch unit, start in order to the decision computer system.When computer system in closing state and switch element when being enabled, then trigger pip is produced and is sent to computer system, with the control switch unit control signal is switched to first state, makes power supply unit supply working power.When the computer system Be Controlled is shut down, then control this switch unit control signal is switched to second state, so that power supply unit stop supplies working power.

From another viewpoint, the present invention reintroduces a kind of computer apparatus, and this computer apparatus comprises main system, basic control unit, power supply unit, switch element and power control unit.Basic control unit is coupled to main system.Power supply unit has control end, first power end and second source end, and wherein control end receives control signal, makes that power supply unit determines according to above-mentioned control signal whether to give main system from first power end and second source end supply working power.Power control unit couples basic control unit, determines the state of control signal with the output of foundation basic control unit.Switch element couples power control unit, whether starts main system in order to decision.When main system in closing state and switch element when being enabled, then basic control unit receives trigger pip, causes basic control unit control power control unit that control signal is switched to first state, so that power supply unit supply working power.When the main system Be Controlled was shut down, then basic control unit control power control unit switched to second state with control signal, so that power supply unit stop supplies working power.

The present invention is by the state of the control signal of control switch unit, and whether power supply unit provides working power according to the state decision of this control signal again.Therefore, can effectively block battery electric quantity and continue to consume, and then reach stand-by time that increases battery and the serviceable life that prolongs battery.

For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. is described in detail below.

Description of drawings

Fig. 1 illustrates the calcspar into existing computer apparatus.

Fig. 2 illustrates and is the circuit diagram according to the computer apparatus of a preferred embodiment of the present invention.

Embodiment

Fig. 2 illustrates and is the circuit diagram according to the computer apparatus of a preferred embodiment of the present invention.Please refer to Fig. 2, computer apparatus 200 provided by the present invention comprises a power supply module 210 and a computer system 260.Wherein, power supply module 210 is coupled to computer system 260, to supply its operation required electric power.And computer system 260 can be a portable computer system.

In the present embodiment, computer unit 260 comprises main system 261 and basic control unit 262.Whether wherein, basic control unit 262 for example is the keyboard controller of portable computer, and is coupled to main system 261, start with decision main system 261.

In addition, power supply module 210 comprises power supply unit 220, switch element 230 and power control unit 270.Wherein, power supply unit 220 has control end 221, first power end 222 (for example being positive power source terminal) and second source end 223 (for example being negative power end), to provide computer apparatus 200 internal circuits required working power.The control end 221 of this power supply unit 220 receives a control signal CS, and determines whether give computer system 260 from first and second power ends, 222,223 supply working powers according to the state of this control signal CS.

In the present embodiment, switch element 230 can be the power switch of computer, and the one end is coupled to power control unit 270, and its other end is coupled to earth terminal GND.

In addition, power control unit 270 is coupled to the basic control unit 262 of switch element 230 and power supply unit 220 and computer system 260.By this, whether power control unit 270 can be enabled according to the output and the switch element 230 of basic control unit 262, and the state of decision control signal CS, and then whether control power supply unit 220 supplies working power.

Please continue with reference to Fig. 2, power control unit 270 comprises that switch unit 240, capacitor C direct current are to direct current transducer 250 and resistance R.Whether switch unit 240 is coupled to basic control unit 262, and start according to main system 261 and determine the state of control signal CS.

In the present embodiment, capacitor C in the power control unit 270 can be used as voltage stabilizing element, direct current then is that first power end 222 with power supply unit 220 is coupled to basic control unit 262 to direct current transducer 250, and is coupled to switch element 230 and switch unit 240 by resistance R.Switch unit 240 comprises diode D, the first transistor Tr1, first resistance R 1 and second resistance R 2.Wherein, diode D can be a schottky diode (Schottky Diode), its cathode terminal is coupled to switch element 230, and its anode tap is coupled to power supply unit 220, the direction that flows with the restriction electric current (also promptly avoid direct current to the current reflux of direct current transducer 250 outputs to power supply unit 220).The first transistor Tr1 can be a NPN bipolar transistor, and its collector terminal is coupled to the anode tap of diode D and the control end 221 of power supply unit 220, and its emitter-base bandgap grading end then is coupled to earth terminal GND, in order to the state of decision control signal CS.

In addition, first resistance R 1 is coupled between the base terminal and basic control unit 262 of the first transistor Tr1.Second resistance R 2 is coupled between the base terminal and its emitter-base bandgap grading end of the first transistor Tr1.This two resistance R 1, R2 are as current limiting element, in case fluid stopping is excessive to the electric current of the first transistor Tr1, and make the first transistor Tr1 damage.

In the present embodiment, power supply unit 220 comprises battery module 225, transistor seconds Tr2, the 3rd transistor Tr 3 and microcontroller 226.Wherein, the second and the 3rd transistor Tr 2, Tr3 are nmos pass transistor.Battery module 225 is coupled to the second source end 223 of microcontroller 226, power supply unit 220 and first source/drain electrode end of transistor seconds Tr2 respectively, with the required working power of supply computer apparatus 200.First source of the 3rd transistor Tr 3/drain electrode end is coupled to second source/drain electrode end of transistor seconds Tr2, and its second source/drain electrode end then is coupled to first power end 222.

And microcontroller 226 is coupled to the gate terminal of control end 221, transistor seconds Tr2 and the 3rd transistor Tr 3 respectively, and determine the second and the 3rd transistor Tr 2 according to the state of control signal CS, whether conducting of Tr3.Under the situation that main system 261 is closed, control signal CS is suspension joint (floating) state, so battery module 225 does not provide working power to computer system 260.And when switch element 230 was enabled, diode D conducting this moment made control signal CS be converted to an earthing potential.

Then, when microcontroller 226 receives this control signal CS, then control the second and the 3rd transistor Tr 2, Tr3 conducting.Because the second and the 3rd transistor Tr 2, Tr3 conducting, this moment, battery module 225 output one voltage to direct currents produced a trigger pip to direct current transducer 250, and were sent to basic control unit 262.

After basic control unit 262 receives these trigger pips, can export a starting-up signal (high-voltage level) and be sent to the first transistor Tr1 via first resistance R 1, make the first transistor Tr1 conducting.At this moment, switch element 230 is a disabled state, so control signal CS is a floating.Because the first transistor Tr1 conducting, then switch unit 240 is converted to earthing potential again with control signal CS, and is sent to microcontroller 226, makes the second and the 3rd transistor Tr 2, Tr3 conducting once more.Therefore, battery module 225 can be powered to computer system 260, and main system 261 can normally be moved.In battery module 225 power supplies, the power supply of basic control unit 262 is then provided by battery module 225, so that the sustainable conducting of the first transistor Tr1 allows battery module 225 can continue to provide working power.

In addition, when main system 261 was for example closed by operating system control by the user, basic control unit 262 can be sent to the first transistor Tr1 via first resistance R 1 by output one off signal (low voltage level), makes the first transistor Tr1 end.Because the first transistor Tr1 ends, control signal CS state will be converted to floating in switch unit 240, and be sent to microcontroller 226.After microcontroller 226 receives this control signal CS, then control the second and the 3rd transistor Tr 2, Tr3 ends, and makes battery module 225 that working power no longer is provided.Therefore, after main system 261 was closed, battery module 225 no longer provided operating voltage, can reduce unnecessary electric quantity consumption, and then can increase the stand-by time of battery module 225.

In sum, because power supply module provided by the present invention, whether the may command battery module powers.When computer system brings into operation, then provide working power to use to computer system, and when computer system is shut down, the supply of then cutting off the electricity supply fully, and make the electric weight of battery module not continue consumption.Therefore, can solve battery electric quantity effectively with power supply module provided by the present invention continues the problem of loss and increases the time that battery uses.

Though the present invention discloses as above with preferred embodiment; right its is not in order to limiting the present invention, anyly has the knack of this skill person, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is when with being as the criterion that claim was defined.

Claims (18)

1. a power supply module is applicable to a computer system, comprising:
One power supply unit, have a control end, one first power end and a second source end, wherein this control end receives a control signal, makes that this power supply unit determines according to this control signal whether to supply a working power to this computer system from this first power end and this second source end;
Whether one switches the unit, start and determine the state of this control signal according to this computer system; And
One switch element couples this switch unit, whether starts in order to determine this computer system,
Wherein when this computer system in closing state and this switch element when being enabled, then a trigger pip is produced, and sends this computer system to, to control this switch unit this control signal is switched to one first state, make this power supply unit supply this working power
When this computer system Be Controlled shutdown, then control this switch unit this control signal is switched to one second state, so that this this working power of power supply unit stop supplies.
2. power supply module as claimed in claim 1 is characterized in that, also comprises:
One electric capacity, an end ground connection wherein, the other end couples this first power end; And
One direct current has an input end and an output terminal to direct current transducer, and wherein this input end couples this first power end, and this output terminal is coupled to this computer system; And
One resistance, in order to this direct current is coupled to this switch unit and this switch element to this output terminal of direct current transducer,
Wherein when this computer system in closing state, and this switch element is when being enabled, then this power supply unit discharges to direct current transducer by this direct current, to produce this trigger pip to this computer system.
3. power supply module as claimed in claim 1 is characterized in that, this switch unit comprises:
One diode, its cathode terminal is coupled to this switch element;
One the first transistor, its collector terminal couples the anode tap of this diode, and is coupled to the control end of this power supply unit, and its emitter-base bandgap grading end is ground connection then;
One first resistance is coupled to this computer system in order to the base terminal with this first transistor; And
One second resistance is coupled to its emitter-base bandgap grading end in order to the base terminal with this first transistor.
4. power supply module as claimed in claim 3 is characterized in that, this first transistor is the NPN bipolar transistor.
5. power supply module as claimed in claim 1 is characterized in that, this power supply unit comprises:
One battery module is in order to supply this working power;
One transistor seconds, its first source/drain electrode end couples this battery module;
One the 3rd transistor, its first source/drain electrode end couple the second source/drain electrode end of this transistor seconds, and the 3rd transistorized second source/drain electrode end then is coupled to this first power end; And
One microcontroller couples this control end, and couples this transistor seconds and the 3rd transistorized gate terminal, to determine the whether conducting of this transistor seconds and the 3rd transistor according to the state of this control signal.
6. power supply module as claimed in claim 5 is characterized in that, this transistor seconds and the 3rd transistor are nmos pass transistor.
7. power supply module as claimed in claim 1 is characterized in that, this of this control signal first state is an earthing potential.
8. power supply module as claimed in claim 1 is characterized in that, this of this control signal second state is a floating.
9. power supply module as claimed in claim 1 is characterized in that, this computer system is a portable computer system.
10. computer apparatus comprises:
One main system;
One basic control unit is coupled to this main system;
One power supply unit, have a control end, one first power end and a second source end, wherein this control end receives a control signal, makes that this power supply unit determines according to this control signal whether to supply a working power to this main system from this first power end and this second source end;
One power control unit couples this basic control unit, to determine the state of this control signal according to the output of this basic control unit; And
One switch element couples this power control unit, whether starts this main system in order to decision,
Wherein when this main system in closing state and this switch element when being enabled, then this basic control unit receives a trigger pip, cause this basic control unit to control this power control unit this control signal is switched to one first state, so that this power supply unit is supplied this working power
When this main system Be Controlled shutdown, then this basic control unit is controlled this power control unit this control signal is switched to one second state, so that this this working power of power supply unit stop supplies.
11. computer apparatus as claimed in claim 10 is characterized in that, this basic control unit is a keyboard controller.
12. computer apparatus as claimed in claim 10 is characterized in that, this power control unit comprises:
One electric capacity, an end ground connection wherein, the other end couples this first power end;
One direct current has an input end and an output terminal to direct current transducer, and wherein this input end couples this first power end, and this output terminal is coupled to this basic control unit;
One switches the unit, switches this control signal according to the output of this basic control unit and is this first state or this second state; And
One resistance, in order to this direct current is coupled to this switch unit and this switch element to this output terminal of direct current transducer,
Wherein when this main system in closing state, and this switch element is when being enabled, then this power supply unit discharges to direct current transducer by this direct current, gives this basic control unit to produce this trigger pip.
13. computer apparatus as claimed in claim 12 is characterized in that, this switch unit comprises:
One diode, its cathode terminal is coupled to this switch element;
One the first transistor, its collector terminal couples the anode tap of this diode, and is coupled to the control end of this power supply unit, and its emitter-base bandgap grading end is ground connection then;
One first resistance is coupled to this basic control unit in order to the base terminal with this first transistor; And
One second resistance is coupled to its emitter-base bandgap grading end in order to the base terminal with this first transistor.
14. computer apparatus as claimed in claim 13 is characterized in that, this first transistor is the NPN bipolar transistor
15. computer apparatus as claimed in claim 10 is characterized in that, this power supply unit comprises:
One battery module is in order to supply this working power;
One transistor seconds, its first source/drain electrode end couples this battery module;
One the 3rd transistor, its first source/drain electrode end couple the second source/drain electrode end of this transistor seconds, and the 3rd transistorized second source/drain electrode end then is coupled to this first power end; And
One microcontroller couples this control end, and couples this transistor seconds and the 3rd transistorized gate terminal, to determine the whether conducting of this transistor seconds and the 3rd transistor according to the state of this control signal.
16. computer apparatus as claimed in claim 15 is characterized in that, this transistor seconds and the 3rd transistor are nmos pass transistor.
17. computer apparatus as claimed in claim 10 is characterized in that, this of this control signal first state is an earthing potential.
18. computer apparatus as claimed in claim 1 is characterized in that, this of this control signal second state is a floating.
CNA2007100968243A 2007-04-04 2007-04-04 Power supply module of computer device CN101281419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2007100968243A CN101281419A (en) 2007-04-04 2007-04-04 Power supply module of computer device

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Application Number Priority Date Filing Date Title
CNA2007100968243A CN101281419A (en) 2007-04-04 2007-04-04 Power supply module of computer device

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101887299B (en) * 2009-05-15 2012-09-19 华硕电脑股份有限公司 Power supply control circuit and control method of computer system
CN102759887A (en) * 2011-04-28 2012-10-31 群康科技(深圳)有限公司 Electronic device, personal computer, host and display
CN103135736A (en) * 2011-11-25 2013-06-05 英业达股份有限公司 Power supply redundancy system
WO2020047693A1 (en) * 2018-09-03 2020-03-12 深圳迈瑞生物医疗电子股份有限公司 Power supply management circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101887299B (en) * 2009-05-15 2012-09-19 华硕电脑股份有限公司 Power supply control circuit and control method of computer system
CN102759887A (en) * 2011-04-28 2012-10-31 群康科技(深圳)有限公司 Electronic device, personal computer, host and display
CN102759887B (en) * 2011-04-28 2015-03-11 群康科技(深圳)有限公司 Electronic device, personal computer, host and display
CN103135736A (en) * 2011-11-25 2013-06-05 英业达股份有限公司 Power supply redundancy system
WO2020047693A1 (en) * 2018-09-03 2020-03-12 深圳迈瑞生物医疗电子股份有限公司 Power supply management circuit

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Open date: 20081008