CN104699212A

CN104699212A - Power management system, electronic device and PMU (power management unit) chip

Info

Publication number: CN104699212A
Application number: CN201310646323.3A
Authority: CN
Inventors: 王红亮
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2013-12-04
Filing date: 2013-12-04
Publication date: 2015-06-10
Anticipated expiration: 2033-12-04
Also published as: CN104699212B

Abstract

The application discloses a power management system, an electronic device and a PMU (power management unit) chip and aims to solve the technical problem that a PMU unit cannot be compatible with multiple generations of CPU (central processing unit) platforms. The system comprises a charge management chip, a CPU power management chip and a PMU chip, wherein the charge management chip is connected with a power adapter; the CPU power management chip and the PMU chip are connected with the charge management chip; the charge management chip is used for converting first output voltage output by the power adapter to second output voltage and outputting the second output voltage to a battery of the electronic device, the CPU management chip and the PMU chip, and the CPU power management chip is used for converting the second output voltage into third output voltage and outputting to a CPU of the electronic device; the PMU chip is used for converting second output voltage into N-1 fourth output voltage to supply power to other power consumption devices except the CPU in the electronic device, wherein N is an integer which is not less than 2.

Description

A kind of power-supply management system, electronic equipment and PMU chip

Technical field

The application relates to electronic technology field, particularly a kind of power-supply management system, electronic equipment and PMU chip.

Background technology

Along with the fast development of electronic technology, various electronic equipment is a feast for the eyes, and power supply is the important component part of numerous electronic equipment, and energy consumption when power management can reduce that in electronic equipment, assembly leaves unused better effectively, makes electronic equipment more energy-conservation.

Power Management Unit PMU is an important step in the whole power-supply management system of portable electric appts, some class Power Management Devices by traditional discrete are incorporated within single encapsulation, can realize higher power supply conversion efficiency and more low-power consumption like this, and less package count is to adapt to the plate level space reduced.Basic composition unit based on the power management scheme of PMU comprises: Charge Management unit, cpu power administrative unit and PMU unit.

Early stage PMU scheme is only applied to ARM platform, and in order to enable PMU scheme be applicable to Intel platform, the partner TI company of Intel and Rohm company are proposed the power management scheme based on PMU respectively.Wherein, in the PMU power management scheme that TI company releases, PMU unit comprises 2 PMU chips, and each PMU chip I2C bus connects, the packaged type of chip be QFN(as shown in Figure 1); In the PMU power management scheme that Rohm company releases, only include Charge Management unit and PMU unit, only have a PMU chip at PMU unit, and be integrated with cpu power managing chip in this PMU chip, its packaged type is also QFN.

But present inventor is in the process realizing invention technical scheme in the embodiment of the present application, find that above-mentioned technology at least exists following technical matters:

In the prior art, because the integrated level of PMU chip is not high, make to need in PMU unit to adopt many PMU chips, as TI company adopts 2 PMU chips, when PMU unit adopts many PMU chips, each PMU chip needs to adopt different I2C bus addresss, so, exist in prior art, PMU chip integration is not high, adopts multiple PMU chip in power-supply management system, when realizing the control to multiple PMU chip, bus functionality is single, the technical matters that need adjust when can only carry out.

In addition, in the prior art, due to PMU unit adopt one to be integrated with the PMU chip of cpu power managing chip function time, when CPU updates, cpu power administration module in PMU chip will lose effect, and so whole PMU chip has also just been scrapped, that is, exist when the employing of PMU unit is integrated with the PMU chip of cpu power managing chip in prior art, PMU unit can not compatible many technical matterss for CPU platform.

Further, to the PMU chip application of cpu power managing chip be integrated with in electric power management circuit, and when fabric swatch cabling is carried out to circuit board, because cpu power administrative unit and PMU unit position are on circuit boards concentrated, add the difficulty of circuit board fabric swatch cabling, so exist in prior art, in PMU chip, integrated cpu power managing chip makes the technical matters increased the difficulty of circuit-board laying-out's wiring.

In addition, two PMU chips due to the employing of IT company are in the prior art QFN encapsulation, and package dimension is 8mm*8mm, the PMU chip that Rohm company adopts is similarly QFN encapsulation and package dimension is 10mm*10mm, so also there is the PMU chip adopted in power-supply management system in prior art to be QFN encapsulation and package dimension is large, cause the technical matters that whole power circuit fabric swatch area is large.

Summary of the invention

The embodiment of the present application is by providing a kind of power-supply management system, electronic equipment and PMU chip, in order to solve exist in prior art when PMU unit adopt be integrated with the PMU chip of cpu power managing chip time, PMU unit can not the much more compatible technical matters for CPU platform, achieve cpu power administrative unit and PMU unit in power-supply management system separate, and the PMU chip in PMU unit does not need along with the update of CPU in electronic equipment and changes, the PMU chip namely in PMU unit can compatible many technique effects for CPU platform.

First aspect, the embodiment of the present application provides a kind of power-supply management system, and be applied in an electronic equipment, described electronic configurations has a power supply adaptor, and described electronic equipment comprises a battery, and described system comprises:

One charging management chip, can be connected with power supply adaptor described in;

One cpu power managing chip, is connected with described charging management chip;

One PMU chip, is connected with described charging management chip;

Wherein, when described power supply adaptor is connected to described electronic equipment, the first output voltage that described power supply adaptor exports by described charging management chip is converted to second output voltage different from described first output voltage, and export described second output voltage to described battery, described CPU managing chip and described PMU chip, wherein, described second output voltage is converted to three output voltage different from described second output voltage by described cpu power managing chip, and exports the CPU of described electronic equipment to; Described second output voltage is converted to the N-1 different from described second output voltage the 4th output voltage by described PMU chip, thinks that other power consuming device except described CPU in described electronic equipment is powered, wherein N be more than or equal to 2 integer.

Optionally, described PMU chip comprises:

N number of power module and a bus control module;

Wherein, described bus control module is connected with N-1 power module in described N number of power module, described bus control module sends a control signal to a described N-1 power module, carries out power management operations to make a described N-1 power module based on described control signal.

Optionally, described N number of power module comprises:

First linear power supply module and the second linear power supply module;

N-2 switch power module, comprising: internally switch power module and N-3 externally switch power module, wherein, N be greater than 3 integer;

Wherein, a described N-1 power module is specially described second linear power supply module, and a described N-2 switch power module, and described first linear power supply module, described second linear power supply module, and described N-3 external switch power module exports described N-1 the 4th output voltage.

Optionally, described internal switch power module, for described second output voltage is converted to VDDQ voltage, and export described VDDQ voltage to described second linear power supply module, described second linear power supply module exports internal memory VTT voltage based on described VDDQ voltage, thinks that the internal memory in described electronic equipment is powered.

Optionally, described first linear power supply module is used for described second output voltage to be converted to V1 voltage, and using the standby voltage of described V1 voltage as described electronic equipment, and be described PMU chip power supply.

Optionally, described N-3 external switch power module at least comprises:

First external switch power module, for described second output voltage is converted to V2 voltage, and exports the CPU south bridge module of described electronic equipment to, thinks described CPU south bridge module for power supply by described V2 voltage; And/or

Second external switch power module, for described second output voltage is converted to the V3 voltage different from described V2 voltage, and exports described V3 voltage to described CPU south bridge module, thinks described CPU south bridge module for power supply; And/or

3rd external switch power module, for described second output voltage is converted to V4 voltage, and exports described V4 voltage the solid state hard disc of described electronic equipment to, thinks that described solid state hard disc is powered; And/or

4th external switch power module, for described second output voltage is converted to V5 voltage, and exports described V5 voltage the usb interface module of described electronic equipment to, thinks that described usb interface module is powered; And/or

5th external switch power module, for described second output voltage is converted to V6 voltage, and exports described V6 voltage the HDMI equipment of described electronic equipment to, thinks that described HDMI equipment is powered; And/or

6th external switch power module, for described second output voltage is converted to V7 voltage, and exports described V7 voltage the network interface card of described electronic equipment to, thinks that described network interface card is powered; And/or

7th external switch power module, for described second output voltage is converted to V8 voltage, and exports described V8 voltage to described internal memory, thinks that described internal memory is powered.

Optionally, described bus control module at least comprises:

N-1 the first enable signal line terminals, by N-1 the first enable signal line, realize the connection of the embedded controller EC in described PMU chip and described electronic equipment, wherein, described bus control module N-1 the enable signal for enable described second linear power supply module and a described N-2 switch power module that receive that described embedded controller EC sends by described N-1 the first enable signal line;

Command signal line terminals, for passing through command signal line, realize the connection of described PMU chip and described embedded controller EC, wherein, what by described command signal line, described bus control module received that described embedded controller EC sends is used to indicate the command signal that described second linear power supply module and a described N-2 switch power module carry out described power management operations, and N-1 the feedback information that described second linear power supply module and a described N-2 switch power module generate after completing described power management operations is sent to described embedded controller EC;

Clock signal line terminals, for by clock cable, realizes the connection of described PMU chip and described embedded controller EC, and wherein, described bus control module receives the clock control signal of described embedded controller EC transmission by described clock cable.

Optionally, described bus control module at least also comprises:

N-1 the second enable signal line terminals, for passing through N-1 the second enable signal line, realize the connection of described bus control module and described second linear power supply module, and with the connection of a described N-2 switch power module, wherein, a described N-1 enable signal is sent to corresponding described second linear power supply module and a described N-2 switch power module by described N-1 the second enable signal line by described bus control module;

N-1 detection signal line terminals, for passing through N-1 signal lines, realize the connection of described bus control module and described second linear power supply module, and with the connection of a described N-2 switch power module, wherein, described bus control module generates N-1 detection signal based on described control signal, and by a described N-1 signal lines, a described N-1 detection signal is sent to described second linear power supply module and a described N-2 switch power module, and receive described second linear power supply module and a described N-2 switch power module at the described N-1 of a reception detection signal, and N-1 that generates after completing described power management operations based on a described N-1 detection signal is detected feedback information,

N-2 offset signal line terminals, for passing through N-2 bias signal line, realize the connection of described bus control module and a described N-2 switch power module, wherein, described bus control module generates N-2 offset signal based on described control signal, and send a described N-2 offset signal to a described N-2 switch power module by a described N-2 bias signal line, and receive a described N-2 switch power module in the described N-2 of a reception offset signal, and the N-2 generated after completing described power management operations based on a described N-2 offset signal biased feedback information.

Optionally, described bus control module comprises:

Failure warning signal wire terminal, for passing through failure warning signal wire, realize the connection of described PMU chip and described embedded controller EC, wherein, described bus control module is when described PMU chip breaks down, produce failure warning signal, and by described failure warning signal wire, described failure warning signal is exported to described embedded controller EC.

Optionally, described PMU chip is BGA package.

Second aspect, the embodiment of the present application additionally provides a kind of electronic equipment, comprising:

Power-supply management system in first aspect the embodiment of the present application;

CPU, is connected with the cpu power managing chip of being powered by the charging management chip in described power-supply management system in described power-supply management system;

At least one power consuming device except described CPU, is connected with the PMU chip of being powered by described charging management chip in described power-supply management system.

Optionally, described electronic equipment also comprises:

Battery, is connected with described charging management chip.

Optionally, described electronic equipment also comprises:

Embedded controller EC;

Wherein, described charging management chip, described PMU chip, and described battery is connected with described embedded controller EC by the control bus of described electronic equipment.

Optionally, at least one power consuming device described in described electronic equipment at least comprises:

Internal memory, South Bridge chip, solid state hard disc, usb interface module, HDMI equipment and/or network interface card.

The third aspect, the embodiment of the present application additionally provides a kind of PMU chip, is applied to the described power-supply management system in first aspect the embodiment of the present application, and in described electronic equipment in second aspect the embodiment of the present application, described PMU chip comprises:

N number of power module and a bus control module;

Wherein, described bus control module is connected with N-1 power module in described N number of power module, described bus control module sends a control signal to a described N-1 power module, power management operations is carried out based on described control signal to make a described N-1 power module, described PMU chip receives by described N number of power module the second output voltage that in described power-supply management system, charging management chip exports, and described second output voltage is converted to the N-1 different from described second output voltage the 4th output voltage, think that other power consuming device except described CPU in described electronic equipment is powered, wherein N be more than or equal to 2 integer.

Optionally, described N number of power module comprises:

First linear power supply module and the second linear power supply module;

Optionally, described N-3 external switch power module at least comprises:

Optionally, described bus control module at least comprises:

Optionally, described bus control module at least also comprises:

Optionally, described bus control module comprises:

Optionally, described PMU chip is BGA package.

The one or more technical schemes provided in the embodiment of the present application, at least have following technique effect or advantage:

(1) due in the embodiment of the present application, by in the power-supply management system of electronic equipment, employ separate charging management chip, cpu power managing chip and PMU chip, solve exist in prior art when PMU unit adopt be integrated with the PMU chip of cpu power managing chip time, PMU unit can not the much more compatible technical matters for CPU platform, achieve cpu power administrative unit and PMU unit in power-supply management system separate, and the PMU chip in PMU unit does not need along with the update of CPU in electronic equipment and changes, namely the PMU chip in PMU unit can compatible many technique effects for CPU platform.

(2) due in the embodiment of the present application, adopt single PMU chip just can to power for other power consuming device except described CPU in described electronic equipment in the power-supply management system of electronic equipment, visible, the integrated level of described PMU chip is enough high, and do not need to adopt multiple PMU chip in power-supply management system, there will not be the situation adopting multiple bus address to control PMU chip, solve the PMU chip integration existed in prior art not high, multiple PMU chip is adopted in power-supply management system, when realizing the control to multiple PMU chip, bus functionality is single, the technical matters that need adjust when can only carry out, achieve and adopt single PMU chip just can meet the power demands of other system device of whole electronic equipment except CPU in power-supply management system, and the technique effect of bus marco can be carried out neatly to PMU chip.

(3) due in the application's enforcement, power-supply management system adopts separate single cpu power managing chip and PMU chip, when circuit board fabric swatch cabling, the two can be put flexibly, solve the technical matters that integrated cpu power managing chip in the PMU chip existed in prior art makes to increase the difficulty of circuit-board laying-out's wiring, achieve when electric power management circuit plate placement-and-routing, cpu power managing chip and PMU chip can according to side circuit demand flexible topology, the technique effects facilitating cabling.

(4) due in the embodiment of the present application, single charging management chip, cpu power managing chip and PMU chip is adopted in power-supply management system, and PMU chip adopts BGA package, and package dimension is little, for 5.5mm*5.5mm, solve the PMU chip adopted in the power-supply management system existed in prior art be QFN encapsulation and package dimension is large, cause the technical matters that whole power circuit fabric swatch area is large, achieve power circuit fabric swatch area reduces 20% technique effect relative to prior art.

(5) due in the embodiment of the present application, PMU chip comprises N number of power module, and each power module is that in electronic equipment, specific system components and parts are powered, and achieves PMU chip integration high, and the technique effect that internal electric source functions of modules is well defined.

(6) further, due in the embodiment of the present application, PMU chip also comprises a bus control module, and described bus control module is connected with the embedded controller EC of PMU chip exterior, be connected with N-1 power management module in N number of power management module of PMU chip internal simultaneously, described bus control module receives the external control signal carrying out power management for controlling described PMU chip from EC by external control bus, and resolve the internal control signal obtaining and carry out power management for a control N-1 power management module, and send to a described N-1 power management module by Internal Control Bus IBC, a described N-1 power management module can detect voltage according to internal control signal, electric current, wherein, N-2 switch power module can also carry out bias voltage adjustment according to internal control signal, simultaneously, a described N-1 power management module also can feed back Detection Information and offset information to bus control module by Internal Control Bus IBC, and send to EC by external control bus, achieve the variation of PMU chip bus function.

Accompanying drawing explanation

Fig. 1 is that PMU chip QFN of the prior art encapsulates schematic diagram;

A kind of power-supply management system structural drawing that Fig. 2 provides for the embodiment of the present application;

The structural drawing of a kind of PMU chip that Fig. 3 provides for the embodiment of the present application;

The BGA package schematic diagram of a kind of PMU chip that Fig. 4 provides for the embodiment of the present application.

Embodiment

Technical scheme in the embodiment of the present application is for solving the problem, and general thought is as follows:

The embodiment of the present application provides a kind of power-supply management system, and be applied in an electronic equipment, described electronic configurations has a power supply adaptor, and described electronic equipment comprises a battery, and described system comprises:

One charging management chip, can be connected with described power supply adaptor;

One PMU chip, is connected with described charging management chip;

Visible, in the embodiment of the present application, owing to passing through in the power-supply management system of electronic equipment, employ separate charging management chip, cpu power managing chip and PMU chip, solve exist in prior art when PMU unit adopt be integrated with the PMU chip of cpu power managing chip time, PMU unit can not the much more compatible technical matters for CPU platform, achieve cpu power administrative unit and PMU unit in power-supply management system separate, and the PMU chip in PMU unit does not need along with the update of CPU in electronic equipment and changes, namely the PMU chip in PMU unit can compatible many technique effects for CPU platform.

In order to better understand technique scheme, below in conjunction with Figure of description and concrete embodiment, technique scheme is described in detail, the specific features being to be understood that in the embodiment of the present application and embodiment is the detailed description to technical scheme, instead of the restriction to technical scheme, when not conflicting, the technical characteristic in the embodiment of the present application and embodiment can combine mutually.

Embodiment one

Please refer to Fig. 2, the embodiment of the present application provides a kind of power-supply management system, be applied to just like in the portable electronic equipment such as notebook computer, panel computer, described electronic configurations has a power supply adaptor 100, and described electronic equipment comprises a battery, be specifically as follows a rechargeable battery, described system comprises:

One charging management chip 101, model can be MAX1645B, MAX1908 etc., can be connected with described power supply adaptor 100;

One cpu power managing chip 102, model can be ADP3198, ADP3188 etc., is connected with described charging management chip 101;

One PMU chip 103, is connected with described charging management chip 101;

Wherein, when described power supply adaptor 100 is connected to described electronic equipment, the first output voltage that described power supply adaptor 100 exports is converted to second output voltage different from described first output voltage by described charging management chip 101, and export described second output voltage to described battery 104, described CPU managing chip 102 and described PMU chip 103, wherein, described second output voltage is converted to three output voltage different from described second output voltage by described cpu power managing chip 102, and exports the CPU105 of described electronic equipment to; Described second output voltage is converted to the N-1 different from described second output voltage the 4th output voltage by described PMU chip 103, think that other power consuming device except described CPU105 in described electronic equipment powers 106, wherein N be more than or equal to 2 integer.

In the concrete process implemented, when described electronic equipment does not adopt power supply adaptor to power, and during battery electric quantity abundance, can directly by cpu power managing chip and PMU chip power supply that battery is electronic equipment internal, make cpu power managing chip and PMU chip be applicable supply voltage by the voltage transitions of battery, think that the power consuming device of electronic equipment internal is powered.

The power supply source of people's daily life is generally civil power, different national line voltages is also different, whole world line voltage is between 110V ~ 240V, the line voltage of China is then 220V, so high voltage is not suitable for electronic equipment, and the effect of power supply adaptor is exactly voltage civil power being converted to lower applicable electronic equipment use.Power supply adaptor is the power supply conversion equipment of small portable electronic device, is generally made up of shell, power transformer and rectification circuit, can be divided into exchange output type and direct-current-output type by its output type; Direct Plug-In and Table top type can be divided into by connected mode.For notebook computer, the power supply adaptor of most notebook computer can be suitable for 100V ~ 240V alternating current (50/60Hz), the power supply adaptor of notebook computer is according to the difference of model, and the voltage of output is between 16V ~ 20V, and the situation of 19V and 20V is in the majority.Transformer in power supply adaptor and rectification circuit, be converted to the low-voltage DC of applicable computer work by civil power.

For notebook computer, the function that the device of its inside is different according to it has corresponding operating voltage requirements.Such as, the nominal charging voltage of battery is 11V ~ 19V; The input voltage of charging management chip is generally at below 30V, here be the charging management chip of MAX1908 with model be example, input voltage when it normally works is between 8V-25V, maximum input voltage is 28V, civil power is converted to the first lower output voltage and exports to charging management chip by power supply adaptor, normally works to enable charging management chip; Again because cpu power managing chip is according to himself model, also the applicable voltage requirements that it normally works should be had mutually, concrete, take model as the cpu power managing chip of ADP3198 be example, the input voltage that its is supported is 12V, and the first output voltage that power supply adaptor exports by charging management chip is converted to the operating voltage of applicable cpu power managing chip, as 12V, cpu power managing chip, by the first output voltage, is converted to the voltage that applicable this electronic equipment CPU works, and is its power supply.Employing Intel platforms as many in present notebook computer, CPU many employings Intel processor, the electric power output voltage of 12V can be converted to the core supply voltage needed for Intel processor by the cpu power managing chip that model is ADP3198.In like manner, PMU chip also has the input voltage demand being suitable for it and normally working, and according to the structure of power-supply management system, the input voltage of PMU chip and cpu power managing chip is identical.

Because PMU chip is used for for other all power consumption function element except CPU in electronic equipment is powered, visible PMU unit for portable electric appts power management most important.Below the structure of the PMU chip of power-supply management system and principle of work are described in detail.

First, in the structure of PMU chip, please refer to Fig. 3, described PMU chip 103 comprises: N number of power module (301 ~ 310, all get 10 for N in the embodiment of the present application) and a bus control module 311; Wherein, described bus control module 311 is connected with N-1 power module (302 ~ 310) in described N number of power module (301 ~ 310), described bus control module 311 sends a control signal to a described N-1 power module (302 ~ 310), carries out power management operations to make a described N-1 power module (302 ~ 310) based on described control signal.

Concrete, in the present embodiment, the power module of PMU chip internal comprises Switching Power Supply and linear power supply two class.

(1) linear power supply first alternating current is reduced voltage magnitude through transformer, then after rectifier circuit rectifies, obtain pulse direct current, obtains the DC voltage with small ripple voltage by filtering.Reach high-precision DC voltage, have to pass through mu balanced circuit and carry out voltage stabilizing; The course of work of linear power supply major loop is that input power first carries out after preliminary AC voltage-stabilizing through pre-mu balanced circuit, direct supply is transformed into by main Working transformer isolation rectification, under the Based Intelligent Control of control circuit and monolithic microprocessor controller, meticulous adjustment is carried out to Serial regulation element again, make it to export high-precision direct voltage source.

(2) Switching Power Supply utilizes modern power electronics technology, the time ratio that gauge tap pipe turns on and off, and maintains a kind of power supply of regulated output voltage.Switching Power Supply is generally made up of pulse-length modulation (PWM) control IC and field effect transistor (MOSFET).Switching Power Supply is operated on off state due to power transistor, so the power consumption on transistor is little, transformation efficiency is high, is generally 60 ~ 70%.

Below in conjunction with embodiment, linear power supply and Switching Power Supply are described:

Stablize to enable PMU chip, exactly for other power consuming device in system except CPU is powered, N number of power module of PMU chip internal is separate, and the division of labor is clear and definite, namely each power module is respectively corresponding power consuming units according to the application demand of reality and powers.

In the present embodiment, please refer to Fig. 3, described N number of power module (301 ~ 310) comprising: the first linear power supply module 301 and the second linear power supply module 302; N-2 switch power module (303 ~ 310), comprising: internally switch power module 303 and N-3 externally switch power module (304 ~ 310), N be greater than 3 integer; Wherein, described N-1 the power module (302 ~ 310) be connected with described bus control module 311 is specially described second linear power supply module 302, and a described N-2 switch power module (303 ~ 310), and described first linear power supply module 301, described second linear power supply module 302, and described N-3 external switch power module (304 ~ 310) exports described N-1 the 4th output voltage.

Specifically, internal switch power module refers to the output voltage of this switch power module, as the input voltage of other power module of PMU chip internal; External switch power module refers to the output voltage of this switch power module, as the input voltage of other power consuming device in electronic equipment except CPU.

In the concrete process implemented, described internal switch power module 303, for described second output voltage is converted to VDDQ voltage, and export described VDDQ voltage to described second linear power supply module 302, described second linear power supply module 302 exports internal memory VTT voltage based on described VDDQ voltage, think that the internal memory in described electronic equipment is powered, be mainly memory bar here and segment data line carries out voltage lifting.Wherein, the VDDQ magnitude of voltage that internal switch power module exports is not a determined value, and will determine according to practical application scene, VTT magnitude of voltage is the half of VDDQ magnitude of voltage, if namely when VDDQ magnitude of voltage is 1.2V, VTT magnitude of voltage is 0.6V.

From above-mentioned introduction, can find that the first linear power supply module 301 is not connected with bus control module 311, described first linear power supply module 301 is for being converted to V1 voltage by described second output voltage, and using the standby voltage of described V1 voltage as described electronic equipment, and be described PMU chip power supply, in actual applications, V1 can be 5V.

Further, in specific implementation process, still please refer to Fig. 3, PMU chip 103 comprises 10 power modules.10 power modules comprise 2 linear power supply modules and 8 switch power modules.Wherein, 2 linear power supplies are specially the first linear power supply module 301 and second source module 302; 8 switch power modules specifically comprise: internally switch power module 303 and 7 external switch power modules.Wherein, 7 external switch power modules specifically comprise:

First external switch power module 304, for described second output voltage is converted to V2 voltage, and exports the CPU south bridge module of described electronic equipment to, thinks described CPU south bridge module for power supply by described V2 voltage, concrete, V2 can be 1.05V; And/or

Second external switch power module 305, for described second output voltage is converted to the V3 voltage different from described V2 voltage, and exports described V3 voltage to described CPU south bridge module, thinks described CPU south bridge module for power supply, and concrete, V3 can be 1.5V; And/or

3rd external switch power module 306, for described second output voltage is converted to V4 voltage, and exports described V4 voltage the solid state hard disc of described electronic equipment to, thinks that described solid state hard disc is powered, concrete, and V4 can be 3V; And/or

4th external switch power module 307, for described second output voltage is converted to V5 voltage, and exports described V5 voltage the usb interface module of described electronic equipment to, thinks that described usb interface module is powered, concrete, and V5 can be 5V; And/or

5th external switch power module 308, for described second output voltage is converted to V6 voltage, and exports described V6 voltage the HDMI equipment of described electronic equipment to, thinks that described HDMI equipment is powered, concrete, and V6 also can be 5V; And/or

6th external switch power module 309, for described second output voltage is converted to V7 voltage, and exports described V7 voltage the network interface card of described electronic equipment to, thinks that described network interface card is powered, concrete, and V7 can be 3V; And/or

7th external switch power module 310, for described second output voltage is converted to V8 voltage, and exports described V8 voltage to described internal memory, thinks that described internal memory is powered, concrete, and V8 can be 1.8V.

Wherein, each power module of N number of power module comprises power input terminals, for accessing input voltage; Output voltage terminals, the output voltage for being converted to by input voltage exports corresponding power consuming device to; And ground terminal.

In order to the flexible control that the embedded controller EC realized in electronic equipment manages PMU chip power, make the power management of PMU chip more intelligent, described bus control module at least comprise:

N-1 the first enable signal line terminals 311-1, by N-1 the first enable signal line, realize the connection of the embedded controller EC in described PMU chip and described electronic equipment, wherein, described bus control module 311 N-1 the enable signal for enable described second linear power supply module 302 and a described N-2 switch power module (303 ~ 310) that receive that described embedded controller EC sends by described N-1 the first enable signal line;

Command signal line terminals 311-2, for passing through command signal line, realize the connection of described PMU chip 103 and described embedded controller EC, wherein, what by described command signal line, described bus control module 311 received that described embedded controller EC sends is used to indicate the command signal that described second linear power supply module 302 and a described N-2 switch power module (303 ~ 310) carry out described power management operations, and N-1 the feedback information that described second linear power supply module 302 and a described N-2 switch power module (303 ~ 310) generate after completing described power management operations is sent to described embedded controller EC,

Clock signal line terminals 311-3, for passing through clock cable, realize the connection of described PMU chip and described embedded controller EC, wherein, described bus control module receives the clock control signal of described embedded controller EC transmission by described clock cable.

Further, in order to the steering order enabling the second linear switch module of PMU chip internal and N-3 switch power module issue according to embedded controller EC carries out power management operations, described bus control module at least also comprises:

Visible, bus control module can control the second linear power supply module and N-3 switch power module detects current output voltage and/or output current, after second linear power supply module and N-3 switch power module detect self current output voltage and/or output current according to detection instruction, testing result is fed back to bus control module, the testing result received is fed back to embedded controller EC by bus control module again, the testing result of embedded controller EC to feedback is checked, if there is deviation, will issue and carry out the offset instructions of finely tuning for gauge tap electric power source pair of module output voltage, the switch power module that there is deviation to make to be detected output voltage and/or electric current adjusts the voltage of current output and/or electric current.

In the concrete process implemented, the duty about each power module in the second linear power supply module and N-2 switch power module and corresponding electric current, voltage reference value is stored in the internal memory of embedded controller EC, for the first external switch power module, as shown in table 1, be the mapping table of the duty of the first external switch power module and electric current, voltage reference value.

Table 1

Wherein, I, U, x are nonnegative number.Concrete, x is threshold factor, can get 3,5 etc., because the operating voltage in electronic equipment and electric current are not absolute stable, there is certain fluctuation range in it, if the current voltage detected and/or current value are within the scope of this, then think that voltage and/or electric current do not change, if below or above the boundary value of this fluctuation range, i.e. threshold value, so think that voltage and/or electric current there occurs change, and the work shape body of power supply also there occurs change.As in table 1, the electric current of the first external switch power module standard operating conditions is (I-x%I) ~ (I+x%I) A, if the A that detects that present current value is greater than (I+x%I), so the first external switch power module is operated in over-current state, and the rest may be inferred for other situation.Concrete, the reference current value I of the first external switch power module when standard operating conditions and reference voltage level U, determine according to different scheme demands, and threshold factor x also can determine according to actual conditions, the threshold factor of voltage, electric current can be different according to application needs, are not specifically limited here to I, U, x.

Associative list 1 and Fig. 3, if PMU chip 103 detects that the current voltage value of the first external Switching Power Supply 304 is U, when present current value is I, this magnitude of voltage and current value are fed back to EC, EC is according to the corresponding relation of the duty be stored in internal memory and electric current, voltage reference value, can inquire about and learn that the duty of this road power supply is standard operating conditions, so EC just need not send instructions down and to adjust this road power supply, keeps work at present shape body.Relative, as (U-x%U) V that detects that current voltage is less than or when being greater than (U+x%U) V, EC can judge to learn that this road power work is under under-voltage or overvoltage condition, now EC can heighten according to this road power supply of control that sends instructions under the current voltage value of feedback or turn down output voltage, the output voltage of Shi Gai road power supply is in normal range, to alleviate owing to making the device in system work long hours under not abnormal duties such as under-voltage or overvoltage, and the situation that device is damaged occurs.

Further, because embedded controller EC is associated with the many functional modules in electronic equipment, the current state of electronic equipment can be known, as when learning that electronic equipment is in holding state or enters battery saving mode, be the power module of the module for power supply such as hard disk, USB interface in closedown PMU chip, thus reach the object of power saving, according to statistics, power-supply management system in the present embodiment, can make the service time of battery of electronic equipment improve at least 3% relative to prior art.

Further, in order to when PMU chip power supply breaks down, make embedded controller EC learn the power module broken down in time, described bus control module comprises:

Failure warning signal wire terminal 311-4, for passing through failure warning signal wire, realize the connection of described PMU chip and described embedded controller EC, wherein, described bus control module is when described PMU chip breaks down, produce failure warning signal, and by described failure warning signal wire, described failure warning signal is exported to described embedded controller EC.After EC receives failure warning signal, failure warning signal is resolved, to determine the power module specifically broken down, and make response in time, as determined the reason that this fault occurs, re-issue steering order or restart power module, or by interactive interface, power fail being fed back to user.

In specific implementation process, please refer to Fig. 4, for the encapsulation schematic diagram of described PMU chip, reduce to make power circuit fabric swatch area, described PMU chip adopts BGA package, multiple power supplies module is integrated with in the PMU chip of BGA package, and will by field effect transistor, phase inverter, the auxiliary circuit of the power module that the elements such as transistor are formed also is integrated in PMU chip, adopt the packaged type of BGA, can utilize the bottom of whole PMU chip that chip pin is set (as in Fig. 4, the round dot of white represents the pin of PMU chip, number of pin is determined according to concrete condition, here be not specifically limited), while making PMU chip have high integration, package dimension also can be reduced, for 5.5mm*5.5mm, thus finally realize the object of power circuit fabric swatch area reduction.

In specific implementation process, the N-1 on described bus control module the first enable signal line terminals, command signal line terminals, clock signal line terminals and failure warning signal wire terminal are all embody with the form of chip pin on PMU chip.Same, each Power Management Unit in N number of Power Management Unit has power input terminals, output voltage terminals and ground terminal, these terminals are embody with the form of chip pin equally on PMU chip.

Embodiment two

Still please refer to Fig. 2, the embodiment of the present application provides a kind of electronic equipment, is specifically as follows the portable electric appts such as notebook computer, comprising:

Power-supply management system in embodiment one;

CPU105, is connected with the cpu power managing chip 102 of being powered by the charging management chip 101 in described power-supply management system in described power-supply management system;

At least one power consuming device 106 except described CPU105, is connected with the PMU chip 103 of being powered by described charging management chip 101 in described power-supply management system.

Further, in order to give power electronic equipment when not having external power supply, described electronic equipment also comprises: battery 104, is connected with described charging management chip 101.

In specific implementation process, in order to realize the control and management to power-supply management system, make power-supply management system more intelligent, described electronic equipment also comprises: embedded controller EC107;

Wherein, described charging management chip 101, described PMU chip 103, and described battery 104 is connected with described embedded controller EC107 by the control bus 108 of described electronic equipment.Concrete, in Fig. 2, thicker line represents control bus 108, and control bus can be I2C bus or SMBUS bus.In specific implementation process, cpu power managing chip will determine whether to be connected with embedded controller EC according to its model, when cpu power managing chip has bus interface, so it can be connected with EC according to application needs.

In specific implementation process, at least one power consuming device described in described electronic equipment at least comprises:

Embodiment three

Still please refer to Fig. 3, the embodiment of the present application provides a kind of PMU chip 103, is applied to the power-supply management system in embodiment one, and in described electronic equipment in embodiment two, described PMU chip 103 comprises:

N number of power module (301 ~ 310) and a bus control module 311;

In specific implementation process, stablize to enable PMU chip, exactly for other power consuming device in system except CPU is powered, N number of power module of PMU chip internal is separate, and there is the clear and definite division of labor, namely each power module is respectively corresponding power consuming units according to the application demand of reality and powers, and described N number of power module comprises:

First linear power supply module and the second linear power supply module;

Further, described internal switch power module 303, for described second output voltage is converted to VDDQ voltage, and export described VDDQ voltage to described second linear power supply module, described second linear power supply module exports internal memory VTT voltage based on described VDDQ voltage, thinks that the internal memory in described electronic equipment is powered.

In specific implementation process, described first linear power supply module is used for described second output voltage to be converted to V1 voltage, and using the standby voltage of described V1 voltage as described electronic equipment, and be described PMU chip power supply.

Further, described N-3 external switch power module at least comprises:

First external switch power module 304, for described second output voltage is converted to V2 voltage, and exports the CPU south bridge module of described electronic equipment to, thinks described CPU south bridge module for power supply by described V2 voltage; And/or

Second external switch power module 305, for described second output voltage is converted to the V3 voltage different from described V2 voltage, and exports described V3 voltage to described CPU south bridge module, thinks described CPU south bridge module for power supply; And/or

3rd external switch power module 306, for described second output voltage is converted to V4 voltage, and exports described V4 voltage the solid state hard disc of described electronic equipment to, thinks that described solid state hard disc is powered; And/or

4th external switch power module 307, for described second output voltage is converted to V5 voltage, and exports described V5 voltage the usb interface module of described electronic equipment to, thinks that described usb interface module is powered; And/or

5th external switch power module 308, for described second output voltage is converted to V6 voltage, and exports described V6 voltage the HDMI equipment of described electronic equipment to, thinks that described HDMI equipment is powered; And/or

6th external switch power module 309, for described second output voltage is converted to V7 voltage, and exports described V7 voltage the network interface card of described electronic equipment to, thinks that described network interface card is powered; And/or

7th external switch power module 310, for described second output voltage is converted to V8 voltage, and exports described V8 voltage to described internal memory, thinks that described internal memory is powered.

Further, in order to the flexible control that the embedded controller EC realized in electronic equipment manages PMU chip power, make the power management of PMU chip more intelligent, described bus control module at least comprises:

In specific implementation process, in order to make power circuit fabric swatch area reduce, described PMU chip adopts BGA package.

PMU chip in the present embodiment is introduced in embodiment one, repeats no longer one by one here.It is pointed out that the PMU chip in the present embodiment is applicable to kinds of platform, comprising: Intel platform and AMD platform.

Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims

1. a power-supply management system, be applied in an electronic equipment, described electronic configurations has a power supply adaptor, and described electronic equipment comprises a battery, and described system comprises:

One PMU chip, is connected with described charging management chip;

2. the system as claimed in claim 1, is characterized in that, described PMU chip comprises:

N number of power module and a bus control module;

3. system as claimed in claim 2, it is characterized in that, described N number of power module comprises:

First linear power supply module and the second linear power supply module;

4. system as claimed in claim 3, it is characterized in that, described internal switch power module, for described second output voltage is converted to VDDQ voltage, and export described VDDQ voltage to described second linear power supply module, described second linear power supply module exports internal memory VTT voltage based on described VDDQ voltage, thinks that the internal memory in described electronic equipment is powered.

5. system as claimed in claim 3, is characterized in that, described first linear power supply module is used for described second output voltage to be converted to V1 voltage, and using the standby voltage of described V1 voltage as described electronic equipment, and be described PMU chip power supply.

6. system as claimed in claim 3, is characterized in that, described N-3 external switch power module at least comprises:

7. the system as described in claim as arbitrary in claim 2-6, is characterized in that, described bus control module at least comprises:

8. system as claimed in claim 7, is characterized in that, described bus control module at least also comprises:

9. the system as described in claim as arbitrary in claim 2-6, is characterized in that, described bus control module comprises:

10. the system as described in claim arbitrary in claim 1-6, is characterized in that, described PMU chip is BGA package.

11. 1 kinds of electronic equipments, comprising:

Power-supply management system as described in claim arbitrary in claim 1-10;

12. electronic equipments as claimed in claim 11, it is characterized in that, described electronic equipment also comprises:

Battery, is connected with described charging management chip.

13. electronic equipments as claimed in claim 12, it is characterized in that, described electronic equipment also comprises:

Embedded controller EC;

14. electronic equipments as described in claim arbitrary in claim 11-13, it is characterized in that, at least one power consuming device described in described electronic equipment at least comprises:

15. 1 kinds of PMU chips, are applied to the power-supply management system as described in claim as arbitrary in claim 1-10, and in electronic equipment as described in claim as arbitrary in claim 11-14, described PMU chip comprises:

N number of power module and a bus control module;

16. PMU chips as claimed in claim 15, it is characterized in that, described N number of power module comprises:

First linear power supply module and the second linear power supply module;

17. PMU chips as claimed in claim 16, it is characterized in that, described internal switch power module, for described second output voltage is converted to VDDQ voltage, and export described VDDQ voltage to described second linear power supply module, described second linear power supply module exports internal memory VTT voltage based on described VDDQ voltage, thinks that the internal memory in described electronic equipment is powered.

18. PMU chips as claimed in claim 16, is characterized in that, described first linear power supply module is used for described second output voltage to be converted to V1 voltage, and using the standby voltage of described V1 voltage as described electronic equipment, and be described PMU chip power supply.

19. PMU chips as claimed in claim 16, is characterized in that, described N-3 external switch power module at least comprises:

PMU chip as described in 20. claims as arbitrary in claim 15-19, it is characterized in that, described bus control module at least comprises:

21. PMU chips as claimed in claim 20, is characterized in that, described bus control module at least also comprises:

PMU chip as described in 22. claims as arbitrary in claim 15-19, it is characterized in that, described bus control module comprises:

PMU chip as described in 23. claims as arbitrary in claim 15-19, is characterized in that, described PMU chip is BGA package.