CN203588193U - Embedded system energy-saving device - Google Patents
Embedded system energy-saving device Download PDFInfo
- Publication number
- CN203588193U CN203588193U CN201320671758.9U CN201320671758U CN203588193U CN 203588193 U CN203588193 U CN 203588193U CN 201320671758 U CN201320671758 U CN 201320671758U CN 203588193 U CN203588193 U CN 203588193U
- Authority
- CN
- China
- Prior art keywords
- processor
- external
- resistor
- resistance
- embedded system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 230000004044 response Effects 0.000 abstract description 3
- 230000005669 field effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000007958 sleep Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Images
Landscapes
- Dc-Dc Converters (AREA)
- Power Sources (AREA)
- Microcomputers (AREA)
Abstract
The utility model relates to an embedded system energy-saving device which comprises a processor, a step-down converter, an external first resistor R1 and an external second resistor R2, wherein the step-down converter is connected with the processor; the external first resistor R1 and the external second resistor R2 are used for regulating an output voltage of the step-down converter; the processor is connected with a grid electrode of an MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) tube; and a third resistor R3 connected in parallel with the R2 is arranged at an external N-channel MOSFET. In the scheme, the external MOSFET tube is used; under the condition of not influencing normal work of the processor, a power supply voltage of the processor in the process of sleeping or waiting for response is changed; and the scheme can improve the utilization efficiency of a power supply to a certain degree.
Description
Technical field
The present invention relates to a kind of embedded system energy saver.Specifically refer to a kind of electric power controller that completes the energy-conservation embedded system of step-down by outside MOSFET pipe adjusting DC/DC power supply feedback resistance.
Background technology
For a long time, portable consumer electronic device faces the challenge of high-performance and low-power consumption.These battery power supply systems are used flush bonding processor conventionally, to provide maximum processing power when processing multimedia application, reach minimum power consumption when sleep pattern.
Square being directly proportional of the power consumption of processor and operating voltage, and with frequency of operation also linear proportional relation.Therefore, reduce frequency and will reduce linearly dynamic power consumption, and reduce core voltage, can make dynamic power consumption be exponential form decline.
In traditional powered battery application, the dynamic electric voltage in processor regulates and normally utilizes builtin voltage controller to realize.Internal register allows the core voltage after adjustment to be subject to software control, to reduce energy consumption, and the longest battery life of final realization.Processor is in park mode or wait-for-response process, and externally fed voltage does not reduce, and causes electric power system efficiency lower, and this method is not optimum concerning high-performance hand-held battery power applications.
Summary of the invention
The present invention is a kind of embedded system energy saver.This device is used outside MOSFET pipe, in the situation that not affecting the normal work of processor, changes the supply voltage of processor when dormancy or wait-for-response, and this scheme can improve power utilization efficiency to a certain extent.
Technical scheme of the present invention is:
A kind of embedded system energy saver, comprise processor, the step-down controller being connected with processor, and the first resistance R 1 and the second resistance R 2, its special character is: described processor connects MOSFET tube grid, externally the setting of N channel mosfet and R2 the 3rd resistance R 3 that connects; Described processor also connects an extra resistance, controls voltage Vc to feedback network Injection Current, and the dutycycle of adjusting control voltage can change average DC level; Described processor is connected with feed-forward capacitance C
f.
The DC/DC power supply chip that above-mentioned MOSFET pipe regulates comprises LM2574M, LM2883XMY and LTC3839.
The invention has the advantages that:
1, hardware circuit simple and stable, peripheral circuit is few, saves PCB area.
Owing to using outside MOSFET pipe and DC/DC builtin voltage controller to regulate as system dynamic electric voltage, replace conventional processors builtin voltage controller control method, make hardware circuit simple and stable, peripheral circuit is few, can effectively reduce PCB area, and debugging is convenient.
2, effectively reduce system power dissipation, extend battery.
By changing feedback resistance resistance, thereby change system power supply voltage, reduce system power dissipation, effectively extended battery.
3, can realize any output voltage combination and output load current.
Utilize and control voltage to feedback network input signal, not only make peripheral circuit reduce, can also realize any output voltage combination and output load current, and can drive the various loads except capacitive load.
Accompanying drawing explanation
Fig. 1 is that the present invention realizes hardware elementary diagram.
Embodiment
Referring to Fig. 1,
1) first, take STM32F103V8 as example, this processor normal working voltage scope is 2.0V to 3.6V.
2) system power supply on processor plate, to DC/DC Power supply, is arranged on 3.6V by non-essential resistance voltage divider R1 and R2 by the output voltage of step-down controller.
3) calculate the feedback resistance R2 of DC/DC power supply and the value of R3, and control voltage amplitude V
c_LOWand V
c_HIGHcomputing formula is:
work as V
oUT1=3.6 V, V
oUT2=2.0 V, V
fB=0.8 V, V
c_LOW=3.3 V, V
c_HIGHwhen=0 V and R1=50.1 k Ω, the value that can obtain R2 and R3 is:
4) by the insertion of outside N channel mosfet and R2 the resistance R 3 that connects.
5) with processor GPIO voltage driven MOS FET tube grid, by controlling the switch of MOSFET pipe, when processor sleep state, change feedback resistance, voltage is adjusted to 2.0V from 3.6V.
6) processor is under 25 ℃ of conditions in 36MHz frequency, environment temperature, and the current power dissipation that normal operation consumes is 20mA, and the current power dissipation that park mode consumes is 15mA.Adopt above-mentioned step-down energy-saving scheme, under processor park mode, can required power consumption effectively be reduced more than 30%.
Feature of the present invention is:
The hardware circuit of simple and stable, utilizes MOSFET pipe to change feedback resistance, improves power work efficiency.
Next controls Voltage Feedback mode, can realize any output voltage combination and output load current, and can drive any type load.
Claims (2)
1. an embedded system energy saver, comprise processor, the step-down controller being connected with processor, and the first resistance R 1 and the second resistance R 2, it is characterized in that: described processor connects MOSFET tube grid, externally the setting of N channel mosfet and R2 the 3rd resistance R 3 that connects; Described processor also connects an extra resistance, controls voltage Vc to feedback network Injection Current, and the dutycycle of adjusting control voltage can change average DC level; Described processor is connected with feed-forward capacitance C
f.
2. embedded system energy saver according to claim 1, is characterized in that: the DC/DC power supply chip that described MOSFET pipe regulates comprises LM2574M, LM2883XMY and LTC3839.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320671758.9U CN203588193U (en) | 2013-10-29 | 2013-10-29 | Embedded system energy-saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320671758.9U CN203588193U (en) | 2013-10-29 | 2013-10-29 | Embedded system energy-saving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203588193U true CN203588193U (en) | 2014-05-07 |
Family
ID=50586082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320671758.9U Expired - Fee Related CN203588193U (en) | 2013-10-29 | 2013-10-29 | Embedded system energy-saving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203588193U (en) |
-
2013
- 2013-10-29 CN CN201320671758.9U patent/CN203588193U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9337735B2 (en) | DC/DC converter within a portable computer | |
| CN204244074U (en) | Dc-dc | |
| US8174227B2 (en) | Fan control system | |
| CN106911254A (en) | Electronic device | |
| US8922180B2 (en) | Method for enhancing conversion efficiency at low load of a step-down DC-DC switching converter and related circuit | |
| CN204650334U (en) | A kind of linear voltage regulator of ultra low quiescent power consumption | |
| CN105843318A (en) | Low dropout regulator circuit | |
| TWI462430B (en) | Power management system | |
| TWI524268B (en) | Portable electronic device and core swapping method thereof | |
| CN101853064A (en) | Energy-saving control system | |
| CN103178713A (en) | Low dropout regulator and method capable of remarkably reducing standby power consumption | |
| CN101625588B (en) | Supply circuit of PWM controller | |
| TWI548193B (en) | Power saving method and related power saving circuit | |
| CN203133743U (en) | Embedded type system energy-saving device based on external MOSFET tube | |
| CN203588193U (en) | Embedded system energy-saving device | |
| CN103543818A (en) | Embedded system energy-saving device | |
| TW201409223A (en) | Power switch system and method thereof | |
| CN203289074U (en) | Power supply direct-supply protection circuit and set-top box | |
| CN203984247U (en) | A kind of Novel DC multilevel decompression voltage stabilizing circuit | |
| CN103488273B (en) | A kind of feed circuit being controlled Godson 3B1500 core voltage by GPIO | |
| CN210669887U (en) | Constant-power type rapid discharge circuit | |
| CN210744818U (en) | Power supply system | |
| CN203014675U (en) | Buck-boost switching power supply and controller thereof | |
| CN102324844B (en) | Microcontroller-controlled voltage stabilization device for vehicle body electronic controller | |
| CN101873735B (en) | LED (light-emitting diode) backlight working circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151113 Address after: 710000 Jinqiao International Plaza, No. 0, science and technology road, second hi tech Zone, Shaanxi, Xi'an Province, 1, 1006, 10, 1005 Patentee after: Shaanxi Zhi Qin optimization Culture Development Co.,Ltd. Address before: 710000 Shaanxi Province, Xi'an city high tech Development Zone of high road Maple building C502 Patentee before: SHAANXI GAOXIN INDUSTRY Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20181011 Address after: 710000 D G301, national digital publishing base, 996 Tian Yuan Road, Xi'an High-tech Zone, Shaanxi. Patentee after: Zhiqin Digital Publishing (Xi'an) Co.,Ltd. Address before: 710000 Shaanxi Xi'an high tech Zone, science and technology road 0 Jinqiao International Plaza second building 1 unit 10 level 1005, 1006 Patentee before: Shaanxi Zhi Qin optimization Culture Development Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710000 D G301, national digital publishing base, 996 Tian Yuan Road, Xi'an High-tech Zone, Shaanxi. Patentee after: Zhiqin Digital Publishing Co.,Ltd. Address before: 710000 D G301, national digital publishing base, 996 Tian Yuan Road, Xi'an High-tech Zone, Shaanxi. Patentee before: Zhiqin Digital Publishing (Xi'an) Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |