CN107346164A - A kind of power-supply management system - Google Patents
A kind of power-supply management system Download PDFInfo
- Publication number
- CN107346164A CN107346164A CN201710406974.3A CN201710406974A CN107346164A CN 107346164 A CN107346164 A CN 107346164A CN 201710406974 A CN201710406974 A CN 201710406974A CN 107346164 A CN107346164 A CN 107346164A
- Authority
- CN
- China
- Prior art keywords
- circuit
- power
- management system
- voltage
- supply management
- 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.)
- Pending
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/157—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control
Abstract
The invention belongs to field of power management, more particularly to a kind of power-supply management system.The invention provides a kind of power-supply management system, including low-voltage detection circuit（2）With power starting circuit（3）, voltage conversion circuit（4）, drive circuit, control circuit（1）, RAM save circuit（5）, the low-voltage detection circuit（2）, power starting circuit（3）, voltage conversion circuit（4）, RAM save circuit（5）All and control circuit（1）Connection, by the control circuit（1）Controlled, the driver and the voltage conversion circuit（4）Connection, is internal memory（7）, phaselocked loop（8）And MCU（6）Power supply.Power-supply management system provided by the invention, the method being managed with dynamic approach to external power source, and realize stable power supply, power initiation, protection RAM contents and low voltage test function.
Description
Technical field
The invention belongs to field of power management, more particularly to a kind of power-supply management system.
Background technology
With the high speed development of IC design technology and sub-micro technology, IC design, which has been stepped into, is
Unite chip SOC：（System-On-Chip）Epoch.SOC can integrate embedding people's microsever, storage on single silicon
The functional module of the digital circuits such as device, interface circuit, clock circuit and analog circuit, a complete electronic system work(can be achieved
Energy.It has the characteristics of integrated level is high, and clock frequency is fast.Therefore, SOC appearance proposes higher to the power supply for providing the energy
Requirement.For example, the change of supply voltage can cause digital circuit to be unsatisfactory for timing requirements, so that system can not normal work
Make；In addition, during brownout, content in random memory ram can be caused to be destroyed, cause the irregular working of chip.Electricity
Power management circuits are exactly to be introduced to solve the above problems.Particularly application it is more and more extensive by battery as power supply
In mobile embedded application system, power management is particularly important.Existing method for managing power supply is using applied voltage conversion electricity
Road chip, and low-voltage detection circuit chip.This method has the following disadvantages, and first, the area increase of board level system；The
Two, it is not carried out the protection to RAM；3rd, the microprocessor in System on Chip/SoC lacks the control to voltage conversion circuit.
The content of the invention
Technical problem to be solved：
Existing power supply management uses applied voltage change-over circuit chip, and this method has the following disadvantages, and first, board level system
Area increases；Second, it is not carried out the protection to RAM；3rd, the microprocessor in System on Chip/SoC lacks to voltage conversion electricity
The control on road.
Technical scheme：
In order to solve problem above, the invention provides a kind of power-supply management system, including low-voltage detection circuit 2 to open with power supply
Dynamic circuit 3, voltage conversion circuit 4, drive circuit, control circuit 1, RAM save circuit 5, the low-voltage detection circuit 2, electricity
Source start-up circuit 3, voltage conversion circuit 4, RAM save circuit 5 all connect with control circuit 1, are controlled by the control circuit 1
System, the driver are connected with the voltage conversion circuit 4, are internal memory 7, phaselocked loop 8 and MCU6 power supplies.
Described RAM save circuit 5 is made up of comparator, protection circuit control circuit, on-off circuit.
Described low-voltage testing circuit 2 is made up of a reference circuits, a comparator, a bleeder circuit.
Described drive circuit is by a N-type metal-oxide semiconductor (MOS) for using source electrode to follow connection and a bypass
Electric capacity is formed.
Described drive circuit has three, respectively the first drive circuit 9, the second drive circuit 10 and the 3rd drive circuit
11, first drive circuit 9 is that internal memory 7 is powered, and the second drive circuit 10 is that phaselocked loop 8 is powered, and the 3rd drive circuit 11 is
MCU6 powers.
Described is the control section that control circuit 1 is power-supply management system, by rewritting circuit, state control circuit, simulation
Control circuit, low voltage circuit, restart the part of circuit five composition.
The voltage conversion circuit 4 includes the oscillator by providing input for pump circuit, pump circuit and feedback control circuit.
Described oscillator, pump circuit and feedback control circuit have three, correspond to three drive circuits respectively.
Beneficial effect：
Power-supply management system provided by the invention, the method being managed with dynamic approach to external power source, solve drawbacks described above,
And realize stable power supply, power initiation, the protection function such as RAM contents and low voltage test.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
Below by accompanying drawing, the present invention is described in detail.
As shown in figure 1, a kind of power-supply management system, including low-voltage detection circuit 2 turn with power starting circuit 3, voltage
Change circuit 4, drive circuit, control circuit 1, RAM save circuit 5, the low-voltage detection circuit 2, power starting circuit 3, electricity
Voltage conversion circuit 4, RAM save circuit 5 all connect with control circuit 1, are controlled by the control circuit 1, the driver with
The voltage conversion circuit 4 connects, and is internal memory 7, phaselocked loop 8 and MCU6 power supplies.
When SOC works, cause the content in RAM to be destroyed in order to avoid low due to voltage, protection circuit need to be added.
Described RAM save circuit 5 is made up of comparator, protection circuit control circuit, on-off circuit.When applied voltage is normal, outside
Making alive is by N-type MOS transistor and on-off circuit, by defeated into the builtin voltage end of RAM power supplies after changing
Go out；When external voltage is less than after changing into the builtin voltage of the supplying digital circuits such as MCU, into numerals such as MCU after changing
The builtin voltage of circuit power supply, by being exported after changing into the builtin voltage end of RAM power supplies, reaches protection RAM by on-off circuit
Purpose, and produce a high level marking signal Stby_b, represent RAM by after changing into supplying digital circuits such as MCU
Builtin voltage power supply.
Described low-voltage testing circuit 2 is made up of a reference circuits, a comparator, a bleeder circuit.
Described drive circuit is the N-type metal-oxide semiconductor (MOS) and a shunt capacitance structure for following connection using source electrode by one
Into.
Builtin voltage is the voltage to the MCU in SOC and RAM power supplies, when its numerical value is reduced to certain value, is just produced
Low power event signal realizes that the low-voltage of system is restarted or interrupted to system.
Described drive circuit has three, respectively the first drive circuit 9, the second drive circuit 10 and the 3rd drive circuit
11, first drive circuit 9 is that internal memory 7 is powered, and the second drive circuit 10 is that phaselocked loop 8 is powered, and the 3rd drive circuit 11 is
MCU6 powers.
The voltage that voltage conversion circuit 4 provides is adjusted, and driving force is increased, to realize the purpose of driving.Three drives
The purpose of dynamic circuit is different, but their structure is identical.
Described is the control section that control circuit 1 is power-supply management system, by rewritting circuit, state control circuit, simulation
Control circuit, low voltage circuit, restart the part of circuit five composition.
Re-starting control circuit receives power supply starting signal and the low-voltage as caused by low logic voltage control circuit restarts letter
Number, control signal is produced to rewritting circuit.The initial value design of each mode-control bit when system starts is completed by rewritting circuit.Such as
Fruit is power initiation, and after the completion of rewriting, the power initiation that rewritting circuit receives system completes signal, produces power initiation release
Signal discharges power supply starting signal to power starting circuit.Low logic voltage control circuit receives low power event signal, and
The state control signal provided according to MCU, decision systems are to carry out low-voltage to restart, or carry out low-voltage interruption.State control
Circuit processed produces control signal to the voltage conversion circuit 4 in analog control circuit and Fig. 1, carries out state control.Simulation control
Circuit receives control signal, carries out logical transition, produces the enable signal of the analog portion in power management module.
The voltage conversion circuit 4 includes the oscillator by providing input for pump circuit, pump circuit and feedback control circuit.
Described oscillator, pump circuit and feedback control circuit have three, correspond to three drive circuits respectively.
Voltage conversion circuit is a degeneration factor.Oscillator produces according to external voltage signal and by power management module
Raw reference voltage produces square wave, there is provided to pump circuit.Oscillator herein is voltage controlled oscillator, and different voltage produces different
Frequency square wave, low-voltage high-frequency.Pump circuit receives square wave from oscillator, exports more stable voltage.Pierce circuit with
Pump circuit is complementary to one another, so that the voltage that final output is stable.Three feedback control circuits, respectively to the defeated of three drive circuits
Go out voltage to be monitored, and control signal is conveyed to oscillator, adjust the working condition of oscillator, and then adjust voltage
Purpose.
Although the present invention disclosed as above with preferred embodiment, they be not for limit the present invention, it is any ripe
This those skilled in the art is practised, without departing from the spirit and scope of the invention, can make various changes or retouch from working as, therefore the guarantor of the present invention
What shield scope should be defined by claims hereof protection domain is defined.
Claims (8)
- A kind of 1. power-supply management system, it is characterised in that：Including low-voltage detection circuit（2）With power starting circuit（3）, voltage Change-over circuit（4）, drive circuit, control circuit（1）, RAM save circuit（5）, the low-voltage detection circuit（2）, power supply opens Dynamic circuit（3）, voltage conversion circuit（4）, RAM save circuit（5）All and control circuit（1）Connection, by the control circuit（1） Controlled, the driver and the voltage conversion circuit（4）Connection, is internal memory（7）, phaselocked loop（8）And MCU（6）Power supply.
- 2. power-supply management system as claimed in claim 1, it is characterised in that：Described RAM save circuit（5）By comparator, Protection circuit control circuit, on-off circuit composition.
- 3. power-supply management system as claimed in claim 1, it is characterised in that：Described low-voltage testing circuit（2）By an electricity Reference circuit, a comparator are pressed, a bleeder circuit is formed.
- 4. power-supply management system as claimed in claim 1, it is characterised in that：Described drive circuit is to use source electrode by one The N-type metal-oxide semiconductor (MOS) and a shunt capacitance for following connection are formed.
- 5. the power-supply management system as described in claim 1 or 4, it is characterised in that：Described drive circuit has three, is respectively First drive circuit（9）, the second drive circuit（10）With the 3rd drive circuit（11）, first drive circuit（9）For internal memory （7）Power supply, the second drive circuit（10）For phaselocked loop（8）Power supply, the 3rd drive circuit（11）For MCU（6）Power supply.
- 6. the power-supply management system as described in claim 1-4 any claims, it is characterised in that：Described is control circuit （1）The control section of power-supply management system, by rewritting circuit, state control circuit, analog control circuit, low voltage circuit, Restart the part of circuit five composition.
- 7. power-supply management system as claimed in claim 1, it is characterised in that：The voltage conversion circuit（4）Including by for pump Circuit provides the oscillator of input, pump circuit and feedback control circuit.
- 8. power-supply management system as claimed in claim 7, it is characterised in that；Described oscillator, pump circuit and feedback control Circuit has three, corresponds to three drive circuits respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406974.3A CN107346164A (en) | 2017-06-02 | 2017-06-02 | A kind of power-supply management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406974.3A CN107346164A (en) | 2017-06-02 | 2017-06-02 | A kind of power-supply management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107346164A true CN107346164A (en) | 2017-11-14 |
Family
ID=60254422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710406974.3A Pending CN107346164A (en) | 2017-06-02 | 2017-06-02 | A kind of power-supply management system |
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| Country | Link |
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| CN (1) | CN107346164A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111755035A (en) * | 2020-06-03 | 2020-10-09 | 深圳金茂电子有限公司 | Power chip management system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1949197A (en) * | 2006-11-23 | 2007-04-18 | 北京飞天诚信科技有限公司 | Portable equipment based on non-volatile memory and method of realizing power failure protection |
| CN103777537A (en) * | 2014-01-28 | 2014-05-07 | 无锡云动科技发展有限公司 | Low-power-consumption control circuit and storage device |
| CN203747497U (en) * | 2014-01-27 | 2014-07-30 | 深圳市迪菲特科技股份有限公司 | Standby power supply switching device during power off |
| CN204706353U (en) * | 2015-06-17 | 2015-10-14 | 深圳市科华恒盛科技有限公司 | A kind of data memory protection circuit |
-
2017
- 2017-06-02 CN CN201710406974.3A patent/CN107346164A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1949197A (en) * | 2006-11-23 | 2007-04-18 | 北京飞天诚信科技有限公司 | Portable equipment based on non-volatile memory and method of realizing power failure protection |
| CN203747497U (en) * | 2014-01-27 | 2014-07-30 | 深圳市迪菲特科技股份有限公司 | Standby power supply switching device during power off |
| CN103777537A (en) * | 2014-01-28 | 2014-05-07 | 无锡云动科技发展有限公司 | Low-power-consumption control circuit and storage device |
| CN204706353U (en) * | 2015-06-17 | 2015-10-14 | 深圳市科华恒盛科技有限公司 | A kind of data memory protection circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111755035A (en) * | 2020-06-03 | 2020-10-09 | 深圳金茂电子有限公司 | Power chip management system and method |
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| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171114 |
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| WD01 | Invention patent application deemed withdrawn after publication |