CN105990893B - Method of supplying power to, device and terminal - Google Patents
Method of supplying power to, device and terminal Download PDFInfo
- Publication number
- CN105990893B CN105990893B CN201510079237.8A CN201510079237A CN105990893B CN 105990893 B CN105990893 B CN 105990893B CN 201510079237 A CN201510079237 A CN 201510079237A CN 105990893 B CN105990893 B CN 105990893B
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- power supply
- voltage
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- control
- route
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
Abstract
The present invention provides a kind of method of supplying power to, device and terminals, wherein this method comprises: determining the voltage for the external power supply power supply that the voltage of supplying cell in terminal is connected with the terminal, wherein be provided with dynamic route management function DPM charging circuit in the terminal；According to the voltage of the voltage of determining supplying cell and external power supply power supply, the on-off of the second route between the on-off of first line between load in controlling terminal and system power supply output end and load and battery charging output end, wherein, the operating voltage of the load is less than the ceiling voltage of supplying cell, system power supply output end is the port for carrying and being powered that is negative using external power supply power supply, and battery charging output end is the port for carrying and being powered that is negative using supplying cell；It is load supplying using the second route after the first line and control after supplying cell, external power supply power supply, control, through the invention, solves the complexity of circuit present in the relevant technologies, the high problem of thermal losses.
Description
Technical field
The present invention relates to the communications fields, in particular to a kind of method of supplying power to, device and terminal.
Background technique
With the development of technology, people are higher and higher to requiring with battery powered terminal experience, wherein just including uncommon
Held terminal is hoped more to minimize, cost is lower, and cruising ability is longer, generates heat lower, the service life is longer and other
Various experience performances are become better and better.In order to improve original terminal charge scheme, can not be stood in battery power shortage situation underthrust adapter
The major defect of booting is carved, existing terminal charge scheme is substantially all using with dynamic route management function (Dynamic
Path Management, referred to as DPM)) charging scheme.So-called DPM function charging scheme, refer to the charging chip (or
Circuit) can to charging output and system power supply export this two-way output individually managed, it has following two significant properties:
(1) when being inserted into external adapter, even if when battery power shortage (generally below 3V), system power supply output end voltage
Can maintain system normally start required for voltage (usually 3.4V or 3.6V), can solve in this way tradition without
The defect that DPM function charging scheme terminal can not start in battery power shortage situation underthrust adapter.
(2) when being inserted into external adapter, if load connects the system power supply output end in charging chip (or circuit),
Preferentially this path obtaining current from external adapter to system power supply output end is loaded, if electric current needed for loading is greater than charging core
Piece (or circuit) cut-off current, battery meeting automatic discharging, supplemental current is to load.If load current be less than charging chip (or
Person's circuit) cut-off current, then extra electric current can charge the battery, and battery would not have discharge scenario.This charging scheme phase
For without DPM function charging scheme, battery is not in that (repeated charge can make battery life repeated charge situation
At grievous injury).
But in spite of the charging scheme for having DPM function, when battery will be filled with or fill with, if
Still insert external adapter, system out-put supply end voltage is always high (when generally higher by 100 full of voltage than cell voltage
~200mV), and this voltage usually has been out the permitted voltage specification range of certain supported chips, if the load is added
In the system power supply output end of the charging chip, high pressure is damaged caused by supported chip in order to prevent increases it is necessary to additional again
Some reduction voltage circuits are handled, this obviously will increase the complexity of circuit, Material Cost, but also can bring additional heat waste
Consumption.
For below to use with the mobile terminal of DPM function charging scheme, to traditional two kinds of power supply plan advantage and disadvantage
It is analyzed:
Mobile terminal load is divided to two kinds from its specification limit of powering, and one is can bear higher than battery full voltage bear
It carries, referred to herein as loads 1；One is the loads that can only be worked normally within battery full voltage range, referred to herein as negative
Carry 2.The first traditional power supply plan is as shown in Figure 1, Fig. 1 is structural block diagram of the first tradition power supply of the relevant technologies, can
System power supply output end in charging circuit is connect to bear the load 1 of higher voltage range, can only be in battery full voltage range
Within the load that works connect the charging output end in charging circuit, i.e. battery-end.This resolution circuitry is simple, power supply path
Power consumption is also very low.But existing defect is exactly, when user plugs in adapter in charging in use, 2 design of load will cause electricity
Pond is in repeated charge operating mode, causes very major injury to battery service life.Second of tradition power supply plan such as Fig. 2 institute
Show, Fig. 2 is the structural block diagram of second of the relevant technologies tradition power supply, and it is defeated that all loads all connect the system power supply in charging circuit
Outlet, the program solves the first traditional scheme battery, and there are repeated charge defects.But described in DPM function as above, when slotting
Adapter and battery when will be filled with or fill with, output voltage can beyond 2 electrical specification ranges of load, therefore
Additional switch mode power (Switched-Mode Power is had between 2 power supply of load and charging circuit system power output end
Supply, referred to as SMPS) or linear regulator (Low Dropout Regulator, referred to as LDO) reduction voltage circuit.It is aobvious
Right increased this grade of reduction voltage circuit can introduce following defect, and first, increase circuit complexity；Second, increase Material Cost.
Third increases circuit thermal losses.
For the complexity of circuit present in the relevant technologies, the high problem of thermal losses not yet proposes effective solution side at present
Case.
Summary of the invention
The present invention provides a kind of method of supplying power to, device and terminals, multiple at least to solve circuit present in the relevant technologies
It is miscellaneous, the high problem of thermal losses.
According to an aspect of the invention, there is provided a kind of method of supplying power to, comprising: determine the voltage of supplying cell in terminal
The voltage of the external power supply power supply connected with the terminal, wherein be provided with dynamic route management function DPM in the terminal and fill
Circuit；According to the voltage of the voltage of the determining supplying cell and the external power supply power supply, control in the terminal
Load the between the on-off of the first line between system power supply output end and the load and battery charging output end
The on-off of two routes, wherein the operating voltage of the load is less than the ceiling voltage of the supplying cell, and the system power supply is defeated
It is the port for loading and being powered that outlet, which is using the external power supply power supply, and the battery charges output end to utilize institute
Stating supplying cell is the port for loading and being powered；After the supplying cell, the external power supply power supply, control
The second route after first line and control is the load supplying.
Further, according to the voltage of the voltage of the determining supplying cell and the external power supply power supply, institute is controlled
The on-off of the on-off and second route of stating first line includes at least one of: when the electricity of the external power supply power supply
When pressure is greater than the full voltage of the supplying cell, controls the first line and disconnect, control second line conduction；When described
When the voltage of external power supply power supply is less than or equal to the full voltage of the supplying cell, controls the first line conducting and open, control
Second route is made to disconnect；When the external power supply power supply is not powered, first line conducting is controlled, controls described the
Two line conductions.
Further, the on-off of the on-off and second route that control the first line includes: to utilize switch control
The on-off of the on-off of first line described in logic control processed and second route.
Further, the on-off of the on-off and second route that control the first line includes: by controlling institute
State the on-off of first line described in the folding control of the first switch in first line and by controlling on second route
Second switch folding control described in the second route on-off, wherein the first switch and the second switch are low
Impedance device.
Further, the low-impedance device includes Metal-Oxide Semiconductor field effect transistor M OSFET.
According to another aspect of the present invention, a kind of power supply unit is provided, comprising: determining module, for determining in terminal
The voltage for the external power supply power supply that the voltage of supplying cell is connected with the terminal, wherein dynamic road is provided in the terminal
Diameter management function DPM charging circuit；Control module, for the voltage and the external power supply according to the determining supplying cell
The voltage of power supply controls the on-off of the first line between the load in the terminal and system power supply output end and described negative
Carry the on-off of the second route between battery charging output end, wherein the operating voltage of the load is less than the power supply electricity
The ceiling voltage in pond, it is the end for loading and being powered that the system power supply output end, which is using the external power supply power supply,
Mouthful, it is the port for loading and being powered that the battery charging output end, which is using the supplying cell,；Power supply module is used for
It is described negative using the second route after the first line and control after the supplying cell, the external power supply power supply, control
Carry power supply.
Further, the control module includes at least one of: when the voltage of the external power supply power supply is greater than institute
When stating the full voltage of supplying cell, controls the first line and disconnect, control second line conduction；When the external power supply
It when the voltage of power supply is less than or equal to the full voltage of the supplying cell, controls first line conducting and opens, control described the
Two routes disconnect；When the external power supply power supply is not powered, the first line conducting is controlled, second route is controlled and leads
It is logical.
Further, the control module includes: that on-off and the institute of the first line are controlled using switch control logic
State the channel of the second route.
Further, the control module includes: the folding control by controlling the first switch in the first line
Second route described in the on-off of the first line and the folding control by controlling the second switch on second route
On-off, wherein the first switch and the second switch are low-impedance device.
Further, the low-impedance device includes Metal-Oxide Semiconductor field effect transistor M OSFET.
According to another aspect of the present invention, a kind of terminal, including device described in any of the above embodiments are provided.
Through the invention, the external power supply power supply connected using the voltage of supplying cell in determining terminal with the terminal
Voltage, wherein dynamic route management function DPM charging circuit is provided in the terminal；According to the determining supplying cell
Voltage and the external power supply power supply voltage, control first between the load in the terminal and system power supply output end
The on-off of the second route between the on-off of route and the load and battery charging output end, wherein the work of the load
Make the ceiling voltage that voltage is less than the supplying cell, it is institute that the system power supply output end, which is using the external power supply power supply,
The port that load is powered is stated, the battery charging output end is that the load is powered using the supplying cell
Port；It is institute using the second route after the first line and control after the supplying cell, the external power supply power supply, control
Load supplying is stated, solves the complexity of circuit present in the relevant technologies, the high problem of thermal losses, and then it is multiple to have reached reduction circuit
Miscellaneous degree reduces the effect of thermal losses.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural block diagram of the first tradition power supply of the relevant technologies；
Fig. 2 is the structural block diagram of second of tradition power supply of the relevant technologies；
Fig. 3 is the flow chart of method of supplying power to according to an embodiment of the present invention；
Fig. 4 is the structural block diagram of power supply unit according to an embodiment of the present invention；
Fig. 5 is the structural block diagram of terminal according to an embodiment of the present invention；
Fig. 6 is the structural block diagram of the power supply unit of mobile terminal according to an embodiment of the present invention；
Fig. 7 is the flow chart of control logic according to an embodiment of the present invention；
Fig. 8 is the detailed structural block diagram of power supply unit according to an embodiment of the present invention.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
Providing a kind of method of supplying power to, device and terminal, Fig. 3 in the present embodiment is power supply according to an embodiment of the present invention
The flow chart of method, as shown in figure 3, the process includes the following steps:
Step S302 determines the voltage for the external power supply power supply that the voltage of supplying cell is connected with the terminal in terminal,
In, dynamic route management function DPM charging circuit is provided in the terminal；
Step S304, it is negative in controlling terminal according to the voltage of the voltage of determining supplying cell and external power supply power supply
Carry the second route between the on-off and load and battery charging output end of the first line between system power supply output end
On-off, wherein the operating voltage of the load is less than the ceiling voltage of supplying cell, and system power supply output end is to be supplied using external
Power supply, which is negative, carries the port that is powered, and battery charging output end is the port for carrying and being powered that is negative using supplying cell；
Step S306 utilizes the second route after the first line and control after supplying cell, external power supply power supply, control
For load supplying.
Through the above steps, pass through the on-off of the first line between the load in controlling terminal and system power supply output end
And the on-off of the second route between load and battery charging output end is by supplying cell and external power supply power supply to realize
Load supplying can flexibly be set as the power supply body of load supplying, the circuit complexity and thermal losses that can be greatly reduced, and solve
Circuit present in the relevant technologies is complicated, thermal losses high problem, and then has reached reduction circuit complexity, reduces thermal losses
Effect.
In an alternative embodiment, according to the voltage of determining supplying cell and the voltage of external power supply power supply,
Control first line on-off and the second route on-off when, can at least one in the following way: when external power supply electricity
When the voltage in source is greater than the full voltage of supplying cell, first line disconnection is controlled, second line conduction is controlled；When outside supplies
When the voltage of power supply is less than or equal to the full voltage of supplying cell, controls first line conducting and open, control second route
It disconnects；When external power supply power supply is not powered, first line conducting is controlled, second line conduction is controlled.Wherein, when first
Route disconnects, when the second line conduction, for the relevant technologies, only in battery close to the state for being full of or filling with
When, the problem of just will appear repeated charge, reduces the probability of repeated charge appearance, meanwhile, thermal losses also has very big
Decline；, can be to avoid repeated charge when first line conducting, the second line port, while greatly reducing thermal losses；When
When first line and the second route are both turned on, original impedance can be reduced half, to reduce thermal losses.
In the on-off of the on-off and the second route that control first line, switch control logic can use to control the
The on-off of the on-off of one route and the second route.Wherein, which can be hardware circuit, can also make software
, such as program, to realize accurately controlling to the on-off of the on-off and the second route of first line.
In the on-off of the on-off and the second route that control first line, can divide in first line and the second route
It She Zhi not switch, the disconnection and conducting of route are realized by the opening and closing of control switch.In an optional embodiment
In, in the on-off of the on-off and the second route that control first line, the first switch in control first line can be passed through
The on-off of folding control first line and pass through the logical of the second route of folding control of the second switch on the second route of control
It is disconnected, wherein the first switch and the second switch is low-impedance device.
In an alternative embodiment, above-mentioned low-impedance device includes Metal-Oxide Semiconductor field effect transistor
MOSFET。
A kind of power supply unit is additionally provided in the present embodiment, and the device is for realizing above-described embodiment and preferred implementation side
Formula, the descriptions that have already been made will not be repeated.As used below, the software of predetermined function may be implemented in term " module "
And/or the combination of hardware.Although device described in following embodiment is preferably realized with software, hardware or soft
The realization of the combination of part and hardware is also that may and be contemplated.
Fig. 4 is the structural block diagram of power supply unit according to an embodiment of the present invention, as shown in figure 4, the device includes determining mould
Block 42, control module 44 and power supply module 46, are below illustrated the device.
Determining module 42, for determining the electricity of the voltage of supplying cell is connected with the terminal in terminal external power supply power supply
Pressure, wherein dynamic route management function DPM charging circuit is provided in the terminal；Control module 44 is connected to above-mentioned determining mould
Block 42, for the load and system according to the voltage of determining supplying cell and the voltage of external power supply power supply, in controlling terminal
The on-off of the second route between the on-off of first line between power output end and load and battery charging output end,
In, the operating voltage of the load is less than the ceiling voltage of supplying cell, which is to utilize external power supply power supply
Be negative the port for carrying and being powered, and battery charging output end is the port for carrying and being powered that is negative using supplying cell；Power supply
Module 46 is connected to above-mentioned control module 44, for using supplying cell, external power supply power supply, the first line after control and
The second route after control is load supplying.
In an alternative embodiment, above-mentioned control module 44 includes at least one of: when external power supply power supply
When voltage is greater than the full voltage of supplying cell, control first line is disconnected, and controls the second line conduction；When external power supply power supply
When voltage is less than or equal to the full voltage of supplying cell, control first line conducting is opened, and the second route of control disconnects；When outside supplies
When power supply is not powered, control first line conducting controls the second line conduction.
In an alternative embodiment, control module 44 includes: to utilize the logical of switch control logic control first line
Disconnected and the second route channel.
In an alternative embodiment, control module 44 includes: opening by the first switch in control first line
The on-off of control first line and the on-off of the second route of folding control by the second switch on the second route of control are closed,
Wherein, the first switch and the second switch are low-impedance device.
In an alternative embodiment, above-mentioned low-impedance device includes Metal-Oxide Semiconductor field effect transistor
MOSFET。
Fig. 5 is the structural block diagram of terminal according to an embodiment of the present invention, as shown in figure 5, the terminal 52 includes any of the above-described
The power supply unit 54 of item.
Below by taking mobile terminal as an example, it is illustrated to for the load supplying in mobile terminal.
Fig. 6 is the structural block diagram of the power supply unit of mobile terminal according to an embodiment of the present invention, as shown in fig. 6, the device
It include: the power switch circuit 66 formed with DPM function charging circuit 62, battery 64, power switch K1 and power switch K2,
The switch control logic 68 for controlling power switch closure and closing, load 1 and load 2.
Wherein, the input with DPM function charging circuit 62 receives external power supply (hereinafter referred to as EXT_POWER), warp
Power conversion is crossed, there are two output ends: being respectively that system power supply output end (the hereinafter referred to as end SYS_PWR) and battery charging are defeated
Outlet (the hereinafter referred to as end BATTERY).Wherein, the end SYS_PWR ceiling voltage can be more than 64 100~200mV of full voltage of battery.
It is connected directly with 62 battery of DPM function charging circuit charging output end and battery 64.With in DPM function charging circuit 62
DPM function has following two significant properties:
(1) when being inserted into external adapter, even if when 64 power shortage of battery (generally below 3V), system power supply output end electricity
Pressure can maintain voltage (usually 3.4V or 3.6V) required for system normally start, can solve in this way it is traditional without
The defect that DPM function charging scheme mobile terminal can not start in battery power shortage situation underthrust adapter.
(2) when being inserted into external adapter, if load connects the system power supply output end in charging chip (or circuit),
Preferentially this path obtaining current from external adapter to system power supply output end is loaded, if electric current needed for loading is greater than charging core
Piece (or circuit) cut-off current, the meeting automatic discharging of battery 64, supplemental current is to load.If load current is less than charging chip
(or circuit) cut-off current, then extra electric current can charge to battery 64, and battery 64 would not have discharge scenario.
Above-mentioned 1 electrical installation voltage of load can be higher than 64 ceiling voltage of battery；Above-mentioned 2 electrical installation voltage of load
It must be within 64 ceiling voltage range of battery.
Above-mentioned power switch circuit 66 is made of power switch K1 and power switch K2, the input terminal and band of power switch K1
There is the end SYS_PWR of DPM function charging circuit 62 to be connected；The input terminal of power switch K2 and have DPM function charging circuit 62
The end BATTERY, i.e., battery 64 be connected.The output end of power switch K1 and the output end of power switch K2 are directly shorted one
It rises, then the feeder ear with load 2 is connected directly.
Above-mentioned two power switch K1 and K2 closure is controlled with disconnection by switch control logic 68, the switch control logic 68
It can be realized by hardware circuit, it can also be by software realization.Control logic flow chart is as shown in Fig. 7, and Fig. 7 is according to the present invention
The flow chart of the control logic of embodiment, as shown in fig. 7, the process includes the following steps:
Step S702 starts；
Step S704 judges whether there is legitimate external plant-grid connection, when the judgment result is yes, goes to step S708, no
Then, step S706 is gone to；
Step S706, when not connecing external legal power supply with DPM function charging circuit 62, power switch K1 and K2 is equal
It is closed by control, power switch parallel relationship keeps path resistance minimum, and two power switch interconnections are cooperatively supplied to load 2
Electricity；
Step S708, when connecing external legal power supply with DPM function charging circuit 62, mobile terminal system is to having
The SYS_PWR voltage of DPM function charging circuit 62 carries out detection judgement, judges whether SYS_PWR voltage is greater than expiring for battery 64
Voltage, judging result are when being, to go to step S712, otherwise, go to step S710；
Step S710, when determining SYS_PWR voltage no more than 64 full voltage of battery, control power switch K1 closure, K2 breaks
It opens, gives load 2 power supply by SYS_PWR；
Step S712, when determining that SYS_PWR voltage is greater than 64 full voltage of battery, control power switch K1 is disconnected, and K2 is closed
It closes, gives load 2 power supply by battery 64.
Wherein, power switch K1, K2 and connection type can integrate inside charging circuit, can also be with charge independence electricity
Road.
Above-mentioned two power switch K1, K2 and connection type can be built with separation MOSFET element, be also possible to
One integration module.
Above-mentioned power switch K1, K2 can be made of low-impedance power MOSFET or other novel low-impedance devices
Module composition.
Above-described embodiment can achieve following effect: (1) only with two independent powers switch be connected on charging circuit and
Between load 2, SMPS or LDO compared to traditional second scheme are depressured, and circuit is simpler, and Material Cost is also lower；(2)
Since series power switch impedance is very low, bring thermal losses is negligible, can almost be equal to the first traditional scheme
Beauty；(3) it is controlled by switch control logic, battery charge and discharge repeatedly existing for the first traditional scheme can be evaded to a certain extent
Electric defect.
The content of present invention is done and is further explained in detail in conjunction with attached drawing and flow chart below by specific case study on implementation
It states.
Fig. 8 is the detailed structural block diagram of power supply unit according to an embodiment of the present invention, as shown in figure 8, the device includes
There are DPM function charging circuit module 82, battery module 84, power supply managing chip module 86, P_MOSFET power switch K1
Module 88, P_MOSFET power switch K2 module 810, switch control logic module 812, radio-frequency power amplifier module 814.Its
The electrical installation voltage range of middle power supply managing chip module 86 can be greater than 84 full voltage of battery module；Radio-frequency power is put
Big 814 electrical installation voltage range of device module must be within 814 full voltage range of battery module.
It is used to connect external power supply EXT_POWER with DPM function charging circuit module 82, be converted by internal electric source,
Battery module 84 is charged and is exported independent current source SYS_PWR all the way.
SYS_PWR power supply output with DPM function charging circuit module 82 is connected respectively to power supply managing chip
The source terminal (end S shown in Fig. 8) of module 86 and P_MOSFET power switch K1 module 88.
BATTERY output end with DPM function charging circuit module 82 is connected to P_MOSFET power switch K2 module
810 source terminal (end S shown in Fig. 8).
Either P_MOSFET power switch K1 or P_MOSFET power switch K2, their grids (pole G shown in Fig. 8) and
Source electrode (pole S shown in Fig. 8) is all connected by respective resistance value 10K resistance R, it is therefore an objective to be guaranteed by default, P_
The grid level and source level of MOSFET power switch are equal, and P_MOSFET is made to default off state.
The drain electrode end (end D shown in Fig. 8) and P_MOSFET power switch K2 module of P_MOSFET power switch K1 module 88
Together, node exports confession of the PA_PWR as radio-frequency power amplifier module for 810 drain electrode end (end D shown in Fig. 8) interconnection
Power supply is connected to the feeder ear of radio-frequency power amplifier module 814.
Switch control logic module 812 selects 4 multipurpose pin (Multipurpose using CPU as main control unit
Pin, referred to as MPP) as switch input/output control signal, MPP1~MPP4 can be positioned as.Multipurpose pin MPP1 and
MPP2 is configured to numeral output pin on software, controls the switch of transistor M1 and M2 respectively.When MPP exports high level,
Transistor M conducting, grid (pole G shown in Fig. 8) ground connection of P_MOSFET power switch, P_MOSFET power switch are on shape
State.Conversely, when MPP exports low level, transistor M cut-off, grid (pole G shown in Fig. 8) current potential of P_MOSFET power switch
Equal by resistance R and source potential, P_MOSFET power switch is in off state.Transistor M1 and M2 are in this control logic
Level conversion function is played in circuit, prevents the load of P_MOSFET power switch source electrode too high voltages on the MPP pin of CPU,
Cause MPP pin excessive pressure damages.Multipurpose pin MPP3 is configured to simulation input pin on software, can be filled with real-time sampling
Electric die module system power output signal SYS_PWR, and with software preset battery full voltage threshold value (4.2V or 4.35V) into
Row compares.Multi-purpose pin MPP4 is configured to numeral input pin, receives charging circuit module input power and detects output signal PG_
GD (generally low level is effective).Software control logic flow chart can refer to Fig. 7.
When terminal does not plug in external power supply, the MPP4 pin of CPU detects that PG_GD is low level, and control MPP1/MPP2 is equal
For high level, transistor M1/M2 is both turned on, and P_MOSFET power switch K1/K2 is closed, and gives radio-frequency power amplifier mould in this way
The path impedance of block power supply reaches minimum due to two power switch parallel relationships.Assuming that a single one power switch access
Impedance is 10 consumption Europe, then path impedance is 5 consumption Europe at this time.Assuming that radio-frequency power amplifier module load current is 1A, for passing
It unites the first power supply plan, path thermal losses P=0*1A=0W；For the present invention, path impedance is 5m Ω, therefore heat waste
Consume P=5m Ω * 1A*1A=5mW；For traditional second of power supply plan, it is assumed that supply voltage 4V, reduction voltage circuit efficiency are
90%, then thermal losses P=4V*1A* (1-90%)=400mW.As it can be seen that the path loss original for the power supply that the present invention gives is less than tradition
The thermal losses that second of power supply plan generates, compared to the first traditional power supply plan, thermal losses also only only has 5mW, also several
It is negligible.
When this terminal accesses legitimate external power supply EXT_POWER, the MPP4 pin of CPU detects that PG_GD is low level,
CPU can further sample MPP3 voltage at this time, preset 84 full voltage (4.2V of battery module when detecting that MPP3 pin voltage is greater than
Or 4.35V) when, control MPP1 pin exports low level, and MPP2 pin exports high level, makes P_MOSFET power switch K1 mould
Block 88 disconnects, and P_MOSFET power switch K2 module 810 is closed, 814 power supply PA_PWR=of radio-frequency power amplifier module
BATTERY can make battery module 84 as the first traditional scheme, battery module 84 is allowed to work although control logic at this time
Battery module 84 is close to be full of or fills with state in repeated charge mode, but since such case only occurs in,
So this occurrence probability in the first traditional power supply plan more than greatly reducing.Compare calculating thermal losses again, it is assumed that load
Electric current is 1A, PA_PWR 4V.For the first traditional power supply plan, thermal losses P=0*1A=0W；For the present embodiment,
Supply access impedance due to giving radio-frequency power amplifier module 814 at this time is single power switch direct impedance 10m Ω, heat
P=10m Ω * 1A*1A=10mW is lost；For traditional second of power supply plan, it is assumed that reduction voltage circuit efficiency is 90%, heat waste
Consume P=4V*1A* (1-90%)=400mW.As it can be seen that the present embodiment power supply plan path loss is much smaller than second of power supply of tradition
The thermal losses that scheme generates, compared to the first traditional power supply plan, thermal losses also only only has 10mW, also almost negligible.
Conversely, when CPU detection MPP4 is low level, and when MPP3 pin voltage is less than default 84 full voltage of battery module, MPP1 is controlled
Pin exports high level, and MPP2 pin exports low level, P_MOSFET power switch K1 module 88 is connected, P_MOSFET power
Switch K2 module 810 disconnects, 814 power supply PA_PWR=SYS_PWR of radio-frequency power amplifier module, has evaded tradition first
Kind 84 repeated charge defect of power supply plan battery module.Relatively three kinds of power supply plan thermal losses as described above, the present embodiment
The path loss for the power supply given is much smaller than the thermal losses that traditional second of power supply plan generates.
In battery protection function, Material Cost, circuit complexity, the more traditional two kinds of power supply plans of thermal losses four dimensions
With the advantage and disadvantage of this patent scheme, summarize as shown in table 1:
Table 1
| Item compared | The first traditional scheme | Traditional second scheme | The present invention program |
| Battery protection function | Difference | It is excellent | It is good |
| Material Cost | Nothing | It is high | It is low |
| Circuit complexity | Nothing | It is complicated | Simply |
| Thermal losses | Nothing | It is high | It is very low |
It should be noted that principle of specification for clarity, above-mentioned P_MOSFET power switch and connection type, are scheming
It is all independent in 8.But in actual circuit, these functional units are often integrated in the same chip interior, this is same
Belong to the content that the present invention protects.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein
Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of method of supplying power to characterized by comprising
Determine the voltage for the external power supply power supply that the voltage of supplying cell is connected with the terminal in terminal, wherein the terminal
In be provided with dynamic route management function DPM charging circuit；
According to the voltage of the voltage of the determining supplying cell and the external power supply power supply, the load in the terminal is controlled
The second line between the on-off of first line between system power supply output end and the load and battery charging output end
The on-off on road, wherein the operating voltage of the load is less than the ceiling voltage of the supplying cell, the system power supply output end
For using the external power supply power supply be it is described load the port that is powered, the battery charging output end is to utilize the confession
Battery is the port for loading and being powered；
It is institute using the second route after the first line and control after the supplying cell, the external power supply power supply, control
State load supplying；
Wherein, according to the voltage of the voltage of the determining supplying cell and the external power supply power supply, the First Line is controlled
The on-off on road and the on-off of second route include at least one of: when the voltage of the external power supply power supply is greater than institute
When stating the full voltage of supplying cell, controls the first line and disconnect, control second line conduction；When the external power supply
It when the voltage of power supply is less than or equal to the full voltage of the supplying cell, controls first line conducting and opens, control described the
Two routes disconnect；When the external power supply power supply is not powered, the first line conducting is controlled, second route is controlled and leads
It is logical.
2. the method according to claim 1, wherein control the first line on-off and second line
The on-off on road includes:
The on-off of the first line and the on-off of second route are controlled using switch control logic.
3. the method according to claim 1, wherein control the first line on-off and second line
The on-off on road includes:
By controlling the on-off of first line described in the folding control of the first switch in the first line and passing through control
The on-off of second route described in the folding control of second switch on second route, wherein the first switch and described
Second switch is low-impedance device.
4. according to the method described in claim 3, it is characterized in that, the low-impedance device includes Metal-Oxide Semiconductor
Field effect transistor M OSFET.
5. a kind of power supply unit characterized by comprising
Determining module, for determining the voltage of the voltage of supplying cell is connected with the terminal in terminal external power supply power supply,
Wherein, dynamic route management function DPM charging circuit is provided in the terminal；
Control module, for controlling institute according to the voltage of the determining supplying cell and the voltage of the external power supply power supply
The on-off and the load for stating the first line between the load in terminal and system power supply output end are exported with battery charging
The on-off of the second route between end, wherein the operating voltage of the load is less than the ceiling voltage of the supplying cell, described
It is the port for loading and being powered that system power supply output end, which is using the external power supply power supply, the battery charging output
It is the port for loading and being powered that end, which is using the supplying cell,；
Power supply module, after using the first line and control after the supplying cell, the external power supply power supply, control
Second route is the load supplying；
Wherein, the control module includes at least one of: when the voltage of the external power supply power supply is greater than the power supply electricity
When the full voltage in pond, controls the first line and disconnect, control second line conduction；When the electricity of the external power supply power supply
When pressure is less than or equal to the full voltage of the supplying cell, controls the first line conducting and open, it is disconnected to control second route
It opens；When the external power supply power supply is not powered, the first line conducting is controlled, second line conduction is controlled.
6. device according to claim 5, which is characterized in that the control module includes:
The on-off of the first line and the channel of second route are controlled using switch control logic.
7. device according to claim 5, which is characterized in that the control module includes:
By controlling the on-off of first line described in the folding control of the first switch in the first line and passing through control
The on-off of second route described in the folding control of second switch on second route, wherein the first switch and described
Second switch is low-impedance device.
8. device according to claim 7, which is characterized in that the low-impedance device includes Metal-Oxide Semiconductor
Field effect transistor M OSFET.
9. a kind of terminal, which is characterized in that including device described in any one of claim 5 to 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510079237.8A CN105990893B (en) | 2015-02-13 | 2015-02-13 | Method of supplying power to, device and terminal |
| PCT/CN2015/086277 WO2016127605A1 (en) | 2015-02-13 | 2015-08-06 | Power supply method and apparatus, and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510079237.8A CN105990893B (en) | 2015-02-13 | 2015-02-13 | Method of supplying power to, device and terminal |
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| Publication Number | Publication Date |
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| CN105990893A CN105990893A (en) | 2016-10-05 |
| CN105990893B true CN105990893B (en) | 2019-07-26 |
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| CN201510079237.8A Active CN105990893B (en) | 2015-02-13 | 2015-02-13 | Method of supplying power to, device and terminal |
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| WO (1) | WO2016127605A1 (en) |
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|---|---|---|---|---|
| CN107864435B (en) * | 2017-11-09 | 2024-03-15 | 广州艾美网络科技有限公司 | Audio power control method, control circuit and audio equipment |
| CN110365082B (en) * | 2019-07-24 | 2021-08-06 | 昆山龙腾光电股份有限公司 | Power management circuit, electronic device and power management method |
| CN112688383B (en) * | 2020-12-15 | 2023-06-20 | 维沃移动通信有限公司 | Power supply control circuit, power supply control method and device and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101102052A (en) * | 2007-06-13 | 2008-01-09 | 华为技术有限公司 | Power supply unit, power supply device and system and power supply method |
| CN101884153A (en) * | 2007-12-03 | 2010-11-10 | 罗姆股份有限公司 | Power management circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9231440B2 (en) * | 2012-04-18 | 2016-01-05 | Samsung Sdi Co., Ltd. | Power supply apparatus and controlling method of the same |
| CN104143850B (en) * | 2014-08-20 | 2017-02-15 | 南京矽力杰半导体技术有限公司 | Battery charge and discharge management circuit and electronic device applying same |
-
2015
- 2015-02-13 CN CN201510079237.8A patent/CN105990893B/en active Active
- 2015-08-06 WO PCT/CN2015/086277 patent/WO2016127605A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101102052A (en) * | 2007-06-13 | 2008-01-09 | 华为技术有限公司 | Power supply unit, power supply device and system and power supply method |
| CN101884153A (en) * | 2007-12-03 | 2010-11-10 | 罗姆股份有限公司 | Power management circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105990893A (en) | 2016-10-05 |
| WO2016127605A1 (en) | 2016-08-18 |
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