CN205725701U - A kind of circuit reducing chip power-consumption - Google Patents
A kind of circuit reducing chip power-consumption Download PDFInfo
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- CN205725701U CN205725701U CN201620563828.2U CN201620563828U CN205725701U CN 205725701 U CN205725701 U CN 205725701U CN 201620563828 U CN201620563828 U CN 201620563828U CN 205725701 U CN205725701 U CN 205725701U
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- threshold value
- zero threshold
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- negative voltage
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Abstract
This utility model relates to a kind of circuit reducing chip power-consumption, this circuit includes pull down resistor, zero threshold value pipe, negative voltage output element, controls element, pull down resistor one end and negative voltage output element input introduce positive voltage, the source electrode of the pull down resistor other end and zero threshold value pipe connects, the grounded drain of zero threshold value pipe, the grid of zero threshold value pipe is connected with the one end controlling element, and controlling the element other end can be connected by control ground ground connection or the outfan with negative voltage output element.In scheme of the present utility model, electric charge pump and zero threshold value pipe as negative voltage output device all can do in CMOS technology, be greatly reduced chip and be designed and manufactured as this while being advantageously integrated.
Description
Technical field
This utility model relates to a kind of circuit reducing chip power-consumption.
Background technology
In existing chip, often through the identification of pull down resistor implementation pattern.Such as, EMARKER chip is exactly wherein
One.
For improving product quality, guaranteeing that user is experienced, USB cable manufacturer is just carrying out on a large scale importing in Type-C transmission line
Electronic marker (E-Marker) wafer, drives associated solutions demand to heat rapidly, becomes chip design dealer and rob and take USB
Another research and development of products focus of Type-C windward driving.The thing that Type-C can do simultaneously is too many, the setting of system
(Configuration) situation such as supports electric current, transfer rate etc., has the most different combinations.As an example it is assumed that certain master control
End and device end system are to use the design of Type-C collocation USB PD, and all support 5 amperes of (A) electric currents, if user is only taken
The Type-C cable supporting 3 Ampere currents concatenates two systems, is just likely to cause cable to burn.Therefore E-Marker wafer
Main system in Type-C cable, allow cable manufacturers when product export, can be by the specification material of cable and characteristic, such as
The transfer rate of support, electric power size, judge and strain mechanism even with situation, completely burning is in E-Marker wafer, with
Just, when user concatenation generation problem, can immediately judge and show warning message, or adjustment is arranged situation eliminating automatically, enters
And guarantee product quality and safety.
Existing e-marker chip is to identify by adding 1K pull down resistor at vconn end.Such as Fig. 1, recognize 5.1K
The line of pull down resistor is CC, recognize the line of 1K pull down resistor be Vconn, e-marker chip be by adding 1K at vconn end
Pull down resistor identifies.Vconn terminal voltage representative value is 5V, has the power attenuation of 25mW last time at 1K pull down resistor.Existing skill
In art, using the scheme of Fig. 2 to solve, this scheme shortcoming is not have JFET in CMOS technology, and common chip is for reducing cost all
Using CMOS technology, if needing the most integrated JFET, the cost of chip can increase considerably.
Utility model content
In order to solve above-mentioned technical problem, this utility model provides a kind of circuit reducing chip power-consumption, described circuit
Including pull down resistor, zero threshold value pipe, negative voltage output element, controlling element, described pull down resistor one end and negative voltage output are first
Part input introduces positive voltage, and the source electrode of the pull down resistor other end and zero threshold value pipe connects, the grounded drain of zero threshold value pipe, zero threshold
The grid of value pipe is connected with the one end controlling element, and the described control element other end can be controlled ground ground connection or export with negative voltage
The outfan of element connects.
During described zero threshold value pipe ground connection, zero threshold value pipe conducting；Described zero threshold value pipe and the outfan of negative voltage output element
During connection, electric charge pump produces the voltage of-2V, and zero threshold value pipe turns off.
The threshold voltage of described zero threshold value pipe is less than or equal to-0.7V.
Described negative voltage output element is electric charge pump, and positive voltage is changed into negative voltage by described electric charge pump.
The negative voltage that described electric charge pump changes is less than the threshold voltage of zero threshold value pipe.
Described control element includes the first MOS switch pipe and the second MOS switch pipe, the grid of described first MOS switch pipe
Controlling end with first to be connected, the described drain electrode of the first MOS switch pipe is connected with the outfan of negative voltage output element, and described first
The source electrode of MOS switch pipe and the grid of zero threshold value pipe connect, and the grid of the second MOS switch pipe and second controls end and connects, described
The drain electrode of the second MOS switch pipe is connected with the outfan of negative voltage output element, the source electrode of described second MOS switch pipe and zero threshold
The grid of value pipe connects.
A kind of method reducing chip power-consumption, comprises the following steps:
Described chip includes that the pull down resistor for voltage identification, described circuit include pull down resistor, zero threshold value pipe, negative electricity
Pressure output element, control element, described pull down resistor one end and negative voltage output element input introduce positive voltage, pull down resistor
The source electrode of the other end and zero threshold value pipe connects, the grounded drain of zero threshold value pipe, the grid of zero threshold value pipe and the one end controlling element
Connecting, the described control element other end can be controlled ground ground connection or the outfan with negative voltage output element is connected；
When being in identification state, described zero threshold value pipe ground connection, zero threshold value pipe conducting；
When being not at identification state, the outfan of described zero threshold value pipe negative voltage output element and electric charge delivery side of pump
Connecting, electric charge pump produces the voltage of-2V, and zero threshold value pipe turns off, pull down resistor no power waste.
A kind of method reducing chip power-consumption, described control element includes the first MOS switch pipe and the second MOS switch pipe,
The grid of described first MOS switch pipe and first controls end and connects, and the drain electrode of described first MOS switch pipe is first with negative voltage output
The outfan of part connects, and the source electrode of described first MOS switch pipe and the grid of zero threshold value pipe connect, the grid of the second MOS switch pipe
Pole controls end with second and is connected, the grounded drain of described second MOS switch pipe, the source electrode of described second MOS switch pipe and zero threshold
The grid of value pipe connects；
When being in identification state, described first controls the input of end no-voltage, and second controls end input voltage, zero threshold value pipe
Ground connection, zero threshold value pipe conducting；
When being not at identification state, described first controls end input voltage, and second controls the input of end no-voltage, zero threshold value
The outfan of pipe negative voltage output element is connected with electric charge delivery side of pump, and electric charge pump produces the voltage of-2V, and zero threshold value pipe closes
Disconnected, pull down resistor no power waste.
A kind of chip, described chip includes the above-mentioned circuit reducing chip power-consumption.
A kind of electronic equipment, described electronic equipment includes above-mentioned chip.
In scheme of the present utility model, as the electric charge pump of negative voltage output device and zero threshold value pipe in CMOS technology all
Can do, be greatly reduced chip while being advantageously integrated and be designed and manufactured as this.
It is more readily understood the above-mentioned of the application and other features, aspect and advantage with reference to described further below.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the pattern recognition of a kind of chip of the prior art.
Fig. 2 is the circuit diagram of the pull down resistor power consumption control of prior art chips.
Fig. 3 is reduction chip power-consumption circuit diagram of the present utility model.
Fig. 4 is reduction chip power-consumption another kind circuit diagram of the present utility model.
Wherein, reference is as follows:
Pull down resistor R1 controls element K1 the first MOS switch pipe M1 the second MOS switch pipe M2 first and controls end
G1 second controls end G2 zero threshold value pipe M0 negative voltage output element F1
Detailed description of the invention
For making the purpose of this utility model embodiment, technical scheme and advantage clearer, new below in conjunction with this practicality
The accompanying drawing of type embodiment, is clearly and completely described the technical scheme of this utility model embodiment.Obviously, described
Embodiment is a part of embodiment of the present utility model rather than whole embodiments.Based on described of the present utility model
Embodiment, all other embodiments that those of ordinary skill in the art are obtained on the premise of without creative work, all belong to
Scope in this utility model protection.
Unless otherwise defined, in technical term used herein or scientific terminology should be this utility model art
There is the ordinary meaning that the personage of general technical ability is understood.This utility model patent application specification and claims make
" first ", " second " and similar word be not offered as any order, quantity or importance, and be used only to distinguish
Different ingredients.Equally, the similar word such as " " or " " does not indicates that quantity limits yet, but represents and exist at least
One.
A kind of circuit reducing chip power-consumption, described circuit include pull down resistor, zero threshold value pipe, negative voltage output element,
Control element, described pull down resistor one end and negative voltage output element input and introduce positive voltage, the pull down resistor other end and zero
The source electrode of threshold value pipe connects, the grounded drain of zero threshold value pipe, and the grid of zero threshold value pipe is connected with the one end controlling element, described control
The element other end processed can be controlled ground ground connection or the outfan with negative voltage output element is connected.During described zero threshold value pipe ground connection,
Zero threshold value pipe conducting, when described zero threshold value pipe is connected with the outfan of negative voltage output element, electric charge pump produces the voltage of-2V,
Zero threshold value pipe turns off.
Zero threshold value pipe of the present utility model refers to the metal-oxide-semiconductor that threshold voltage is less than 0, such as, threshold voltage is-0.5 ,-
0.7, the metal-oxide-semiconductor of-1V, this metal-oxide-semiconductor can turn on when grid inputs 0 voltage, as the preferred technical scheme of one, this practicality
The threshold voltage of novel described zero threshold value pipe is less than or equal to-0.7V.When the grid of zero threshold value pipe accesses less than threshold voltage
Negative voltage, then zero threshold value pipe turns off, when the grounded-grid of zero threshold value pipe, zero threshold value pipe conducting.
Negative voltage output element of the present utility model can be any one negative voltage output element of the prior art, institute
The output voltage stating negative voltage output element should be less than the threshold voltage of zero threshold value pipe, when negative voltage output element is defeated by negative pressure
Deliver to the grid of zero threshold value pipe, then zero threshold value pipe turns off, when the grounded-grid of zero threshold value pipe, and zero threshold value pipe conducting.As one
Planting preferred technical scheme, negative voltage output element described in the utility model is electric charge pump, and positive voltage is changed by described electric charge pump
For negative voltage.The negative voltage that described electric charge pump changes is less than the threshold voltage of zero threshold value pipe.
As the preferred technical scheme of one, described control element includes the first MOS switch pipe and the second MOS switch pipe,
The grid of described first MOS switch pipe and first controls end and connects, and the drain electrode of described first MOS switch pipe is first with negative voltage output
The outfan of part connects, and the source electrode of described first MOS switch pipe and the grid of zero threshold value pipe connect, the grid of the second MOS switch pipe
Pole controls end with second and is connected, and the described drain electrode of the second MOS switch pipe is connected with the outfan of negative voltage output element, and described the
The source electrode of two MOS switch pipes and the grid of zero threshold value pipe connect.
This utility model also provides for a kind of method reducing chip power-consumption, and it is drop-down that described chip includes for voltage identification
Resistance, described circuit include pull down resistor, zero threshold value pipe, negative voltage output element, control element, described pull down resistor one end and
Negative voltage output element input introduces positive voltage, and the source electrode of the pull down resistor other end and zero threshold value pipe connects, zero threshold value pipe
Grounded drain, the grid of zero threshold value pipe is connected with the one end controlling element, and the described control element other end can be controlled ground ground connection
Or be connected with the outfan of negative voltage output element；The method comprises the following steps:
When being in identification state, described zero threshold value pipe ground connection, zero threshold value pipe conducting；When being not at identification state, institute
The outfan stating zero threshold value pipe negative voltage output element is connected with electric charge delivery side of pump, and electric charge pump produces the voltage of-2V, zero threshold
Value pipe turns off, pull down resistor no power waste.
The another kind of method reducing chip power-consumption is additionally provided as a kind of preferred technical scheme this utility model, described
Chip include the pull down resistor for voltage identification, described circuit include pull down resistor, zero threshold value pipe, negative voltage output element,
Control element, described pull down resistor one end and negative voltage output element input and introduce positive voltage, the pull down resistor other end and zero
The source electrode of threshold value pipe connects, the grounded drain of zero threshold value pipe, and the grid of zero threshold value pipe is connected with the one end controlling element, described control
The element other end processed can be controlled ground ground connection or the outfan with negative voltage output element is connected；Described control element includes first
MOS switch pipe and the second MOS switch pipe, the grid of described first MOS switch pipe and first controls end and connects, a described MOS
The drain electrode of switching tube is connected with the outfan of negative voltage output element, the source electrode of described first MOS switch pipe and zero threshold value pipe
Grid connects, and the grid of the second MOS switch pipe and second controls end and connects, and the grounded drain of described second MOS switch pipe is described
The source electrode of the second MOS switch pipe and the grid of zero threshold value pipe connect；The method comprises the following steps:
When being in identification state, described first controls the input of end no-voltage, and second controls end input voltage, zero threshold value pipe
Ground connection, zero threshold value pipe conducting；When being not at identification state, described first controls end input voltage, and second controls end no-voltage
Input, the outfan of zero threshold value pipe negative voltage output element is connected with electric charge delivery side of pump, and electric charge pump produces the voltage of-2V,
Zero threshold value pipe turns off, pull down resistor no power waste.
A kind of chip, described chip includes the above-mentioned circuit reducing chip power-consumption.
A kind of electronic equipment, described electronic equipment includes above-mentioned chip.
Embodiment 1
As it is shown on figure 3, a kind of circuit reducing chip power-consumption, this circuit includes that pull down resistor, zero threshold value pipe, negative voltage are defeated
Go out element, control element, pull down resistor one end and the voltage of negative voltage output element input introducing 5V, the pull down resistor other end
Being connected with the source electrode of zero threshold value pipe, the grounded drain of zero threshold value pipe, the grid of zero threshold value pipe is connected with the one end controlling element, control
The element other end processed can be controlled ground ground connection or the outfan with negative voltage output element is connected.During zero threshold value pipe ground connection, zero threshold
Value pipe conducting, when zero threshold value pipe is connected with the outfan of negative voltage output element, electric charge pump produces the voltage of-2V, zero threshold value pipe
Turn off.The threshold voltage of zero threshold value pipe is-0.7V.Negative voltage output element is electric charge pump, and positive voltage is changed into negative by electric charge pump
Voltage.The negative voltage that described electric charge pump changes is less than the threshold voltage of zero threshold value pipe.
Embodiment 2
As shown in Figure 4, a kind of circuit reducing chip power-consumption, circuit includes that pull down resistor, zero threshold value pipe, negative voltage export
Element, controlling element, pull down resistor one end and negative voltage output element input introduce the voltage of 5V, the pull down resistor other end with
The source electrode of zero threshold value pipe connects, the grounded drain of zero threshold value pipe, and the grid of zero threshold value pipe is connected with the one end controlling element, controls
The element other end can be controlled ground ground connection or the outfan with negative voltage output element is connected.During zero threshold value pipe ground connection, zero threshold value
Pipe turns on, and when zero threshold value pipe is connected with the outfan of negative voltage output element, electric charge pump produces the voltage of-2V, and zero threshold value pipe closes
Disconnected.The threshold voltage of zero threshold value pipe is-0.7V.Negative voltage output element is electric charge pump, and positive voltage is changed into negative electricity by electric charge pump
Pressure.The negative voltage that electric charge pump changes is less than the threshold voltage of zero threshold value pipe.Control element and include the first MOS switch pipe and second
MOS switch pipe, the grid of described first MOS switch pipe and first controls end and connects, the drain electrode of the first MOS switch pipe and negative voltage
The outfan of output element connects, and the source electrode of the first MOS switch pipe and the grid of zero threshold value pipe connect, the second MOS switch pipe
Grid and second controls end and connects, the grounded drain of the second MOS switch pipe, the source electrode of the second MOS switch pipe and zero threshold value pipe
Grid connects.
The above, preferred embodiment the most of the present utility model, it is not intended to limit protection of the present utility model
Scope.Every impartial change done according to this utility model content and modification, be encompassed by the scope of the claims of the present utility model
In.
Claims (6)
1. reducing a circuit for chip power-consumption, described circuit includes pull down resistor, zero threshold value pipe, negative voltage output element, control
Element processed, described pull down resistor one end and negative voltage output element input introduce positive voltage, the pull down resistor other end and zero threshold
The source electrode of value pipe connects, the grounded drain of zero threshold value pipe, and the grid of zero threshold value pipe is connected with the one end controlling element, described control
The element other end can be controlled ground ground connection or the outfan with negative voltage output element is connected.
A kind of circuit reducing chip power-consumption the most according to claim 1, it is characterised in that described zero threshold value pipe ground connection
Time, zero threshold value pipe conducting, when described zero threshold value pipe is connected with the outfan of negative voltage output element, electric charge pump produces the electricity of-2V
Pressure, zero threshold value pipe turns off.
A kind of circuit reducing chip power-consumption the most according to claim 1, it is characterised in that the threshold value of described zero threshold value pipe
Voltage is less than or equal to-0.7V.
A kind of circuit reducing chip power-consumption the most according to claim 1, it is characterised in that described negative voltage output element
For electric charge pump, positive voltage is changed into negative voltage by described electric charge pump.
A kind of circuit reducing chip power-consumption the most according to claim 4, it is characterised in that it is negative that described electric charge pump changes
Voltage is less than the threshold voltage of zero threshold value pipe.
A kind of circuit reducing chip power-consumption the most according to claim 1, it is characterised in that described control element includes
One MOS switch pipe and the second MOS switch pipe, the grid of described first MOS switch pipe and first controls end and connects, and described first
The drain electrode of MOS switch pipe is connected with the outfan of negative voltage output element, the source electrode of described first MOS switch pipe and zero threshold value pipe
Grid connect, the grid of the second MOS switch pipe with second control end connection, the drain electrode of described second MOS switch pipe and negative electricity
The outfan of pressure output element connects, and the source electrode of described second MOS switch pipe and the grid of zero threshold value pipe connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620563828.2U CN205725701U (en) | 2016-06-13 | 2016-06-13 | A kind of circuit reducing chip power-consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620563828.2U CN205725701U (en) | 2016-06-13 | 2016-06-13 | A kind of circuit reducing chip power-consumption |
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| Publication Number | Publication Date |
|---|---|
| CN205725701U true CN205725701U (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620563828.2U Active CN205725701U (en) | 2016-06-13 | 2016-06-13 | A kind of circuit reducing chip power-consumption |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915206A (en) * | 2016-06-13 | 2016-08-31 | 成绎半导体技术（上海）有限公司 | Circuit capable of reducing chip power consumption |
| CN109672950A (en) * | 2017-10-13 | 2019-04-23 | 华为终端（东莞）有限公司 | A kind of power-saving circuit and electricity saving method based on Type-C earphone |
-
2016
- 2016-06-13 CN CN201620563828.2U patent/CN205725701U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915206A (en) * | 2016-06-13 | 2016-08-31 | 成绎半导体技术（上海）有限公司 | Circuit capable of reducing chip power consumption |
| CN105915206B (en) * | 2016-06-13 | 2018-09-28 | 成绎半导体技术（上海）有限公司 | A kind of circuit reducing chip power-consumption |
| CN109672950A (en) * | 2017-10-13 | 2019-04-23 | 华为终端（东莞）有限公司 | A kind of power-saving circuit and electricity saving method based on Type-C earphone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wan Lijian Inventor after: Qian Hailei Inventor before: Wan Lijian Inventor before: Wang Tao |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200729 Address after: Room 3001 and 3002, No. 3000, Zhongshan North Road, Putuo District, Shanghai, 200063 Patentee after: Daker (Shanghai) Electronic Technology Co.,Ltd. Address before: 201000 Shanghai city Pudong New Area Jing Road No. 498 Building No. 19 room 205A Patentee before: CHENGYI SEMICONDUCTORS SHANGHAI Co.,Ltd. |
|
| TR01 | Transfer of patent right |