CN109067151A - Dynamic driving voltage adjusting circuit and dynamic driving voltage adjusting method - Google Patents
Dynamic driving voltage adjusting circuit and dynamic driving voltage adjusting method Download PDFInfo
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- CN109067151A CN109067151A CN201811125976.6A CN201811125976A CN109067151A CN 109067151 A CN109067151 A CN 109067151A CN 201811125976 A CN201811125976 A CN 201811125976A CN 109067151 A CN109067151 A CN 109067151A
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- driving voltage
- current
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- voltage
- driving
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- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
-
- 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
- H02M3/158—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 including plural semiconductor devices as final control devices for a single load
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a driving voltage dynamic adjusting circuit and a driving voltage dynamic adjusting method, wherein the circuit comprises a voltage reducing circuit module, the voltage reducing circuit module comprises a PWM (pulse-width modulation) controller, an input driver, an MOS (metal oxide semiconductor) tube and an inductor, the PWM controller is connected with the input driver, the input driver is respectively connected with the MOS tube and the inductor, and the driving voltage dynamic adjusting circuit also comprises a current detecting module and a driving voltage module; the current detection module is respectively connected with the current input end, the current output end and the driving voltage module of the inductor and is used for sampling the driving current flowing to the current input end and the current output end of the inductor, converting the driving current into sampling voltage and outputting the sampling voltage to the driving voltage module; the driving voltage module is connected with the input driver and used for outputting corresponding driving voltage to the input driver according to the sampling voltage. According to the technical scheme provided by the embodiment of the invention, the loss is dynamically optimized by a method of dynamically adjusting the driving voltage through detecting the current in the circuit, so that the conversion efficiency of light and heavy loads can be improved, and the use cost is saved.
Description
Technical field
The present embodiments relate to power circuit technical field more particularly to a kind of driving voltage dynamic regulating circuit and drives
Dynamic voltage dynamic adjusting method.
Background technique
Reduction voltage circuit in switching circuit is widely used in the electronic industry of every field.With a kind of our common drops
For volt circuit BUCK circuit (Buck conversion circuit), traditional BUCK circuit, as shown in Figure 1, be all by a controller,
One input driver, then plug-in a pair of of metal-oxide-semiconductor, adds an inductance composition.In BUCK circuit, current flow paths
On metal-oxide-semiconductor and inductance be all main fever original part, many energy can be lost in these original parts.The loss of metal-oxide-semiconductor
Including switching loss (Psw) and conduction loss (Pcon).Generally, the driving voltage of metal-oxide-semiconductor is bigger, and switching loss can be got over
Greatly, but driving voltage is bigger, and the conduction resistance value of metal-oxide-semiconductor is smaller, and conduction loss is with regard to smaller.What the driving IC of current each family was done
Driving voltage is fixed, so switching loss is all either likewise, there are weights when underloading or heavy duty
The transfer efficiency of load is low, and power dissipation is serious, the high problem of use cost.
Summary of the invention
The present invention provides a kind of driving voltage dynamic regulating circuit and driving voltage dynamic adjusting method, to solve existing skill
The deficiency of art.
To achieve the above object, the present invention provides technical solution below:
In a first aspect, the embodiment of the present invention provides a kind of driving voltage dynamic regulating circuit, including reduction voltage circuit module, institute
Stating reduction voltage circuit module includes PWM controller, input driver, metal-oxide-semiconductor and inductance, and the PWM controller and the input are driven
Dynamic device connection, the input driver further includes current detecting module and driving voltage respectively with the metal-oxide-semiconductor and inductance connection
Module, in which:
The current detecting module respectively with the current input terminal of the inductance, current output terminal and the driving voltage mould
Block connection for being sampled to the driving current for flowing to the current input terminal of the inductance, current output terminal, and is converted to and is taken
Sample voltage output is to the driving voltage module；
The driving voltage module is connect with the input driver, for according to the sampling voltage output received
Corresponding driving voltage is to the input driver.
Further, in the driving voltage dynamic regulating circuit, the metal-oxide-semiconductor is two, and one of metal-oxide-semiconductor is upper
Bridge metal-oxide-semiconductor, another metal-oxide-semiconductor are lower bridge metal-oxide-semiconductor.
Second aspect, the embodiment of the present invention provide a kind of driving voltage dynamic adjusting method, using above-mentioned first aspect institute
The driving voltage dynamic regulating circuit stated executes, which comprises
The current detecting module takes the driving current for flowing to the current input terminal of the inductance, current output terminal
Sample, and be converted to sampling voltage and export to the driving voltage module；
The driving voltage module exports corresponding driving voltage to the input according to the sampling voltage received
Driver.
Further, in the driving voltage dynamic adjusting method, the current detecting module is to flowing to the inductance
Current input terminal, current output terminal driving current be sampled, and be converted to sampling voltage and export to the driving voltage mould
The step of block includes:
The current detecting module takes the driving current for flowing to the current input terminal of the inductance, current output terminal
Sample；
The driving current being sampled to is converted to sampling voltage by the current detecting module, and is exported to the driving voltage
Module.
Further, in the driving voltage dynamic adjusting method, the driving voltage module is according to what is received
Sampling voltage exports corresponding driving voltage to the step of input driver and includes:
The driving voltage module receives the sampling voltage from the current detecting module；
The driving voltage module is according to the sampling voltage, and determination is matched with the sampling voltage from preset relation table
Driving voltage；
The driving voltage module exports the driving voltage to the input driver.
A kind of driving voltage dynamic regulating circuit provided in an embodiment of the present invention and driving voltage dynamic adjusting method, pass through
Electric current in circuit for detecting carrys out dynamic optimization loss in the method for dynamically adjusting driving voltage, so as to improve weight load
Transfer efficiency saves use cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of the BUCK circuit provided in the prior art；
Fig. 2 is a kind of structural schematic diagram for driving voltage dynamic regulating circuit that the embodiment of the present invention one provides；
Fig. 3 is a kind of flow diagram of driving voltage dynamic adjusting method provided by Embodiment 2 of the present invention；
Fig. 4 is a kind of flow diagram of driving voltage dynamic adjusting method provided by Embodiment 2 of the present invention.
Appended drawing reference:
Reduction voltage circuit module 10, current detecting module 20, driving voltage module 30；
PWM controller 11 inputs driver 12, metal-oxide-semiconductor 13, inductance 14.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment one
Fig. 2 is a kind of structural schematic diagram for driving voltage dynamic regulating circuit that the embodiment of the present invention one provides.Such as Fig. 2 institute
Show, the embodiment of the present invention provides a kind of driving voltage dynamic regulating circuit, by the electric current in circuit for detecting, is adjusted and is driven with dynamic
The method of dynamic voltage carrys out dynamic optimization loss.
The driving voltage dynamic regulating circuit, including reduction voltage circuit module 10, the reduction voltage circuit module include PWM control
Device 11 processed, input driver 12, metal-oxide-semiconductor 13 and inductance 14, the PWM controller 11 are connect with the input driver 12, institute
It states input driver 12 to connect with the metal-oxide-semiconductor 13 and inductance 14 respectively, further includes current detecting module 20 and driving voltage mould
Block 30, in which:
The current detecting module 20 is electric with the current input terminal of the inductance 14, current output terminal and the driving respectively
Die block 30 connects, for being sampled to the driving current for flowing to the current input terminal of the inductance 14, current output terminal, and
Sampling voltage is converted to export to the driving voltage module 30；
The driving voltage module 30 is connect with the input driver 12, for according to the sampling voltage received
Corresponding driving voltage is exported to the input driver 12.
Wherein, the metal-oxide-semiconductor 13 is two, and one of metal-oxide-semiconductor is upper bridge metal-oxide-semiconductor, another metal-oxide-semiconductor is lower bridge MOS
Pipe.
It should be noted that current detecting module 20 is a high-precision difference amplifier, current information can be used
The form of voltage shows.
A kind of driving voltage dynamic regulating circuit provided in an embodiment of the present invention, by the electric current in circuit for detecting, with dynamic
The method of state adjustment driving voltage carrys out dynamic optimization loss, so as to improve the transfer efficiency of weight load, saves use cost.
Embodiment two
Referring to Fig. 3, being a kind of flow diagram of driving voltage dynamic adjusting method provided by Embodiment 2 of the present invention.
This method driving voltage dynamic regulating circuit as provided by the embodiment of the present invention executes, the specific steps are as follows:
S101, the current detecting module are to flowing to the current input terminal of the inductance, the driving current of current output terminal
It is sampled, and is converted to sampling voltage and exports to the driving voltage module.
Specifically, step S101 further comprises:
(1) current detecting module to flow to the driving current of the current input terminal of the inductance, current output terminal into
Row sampling；
(2) driving current being sampled to is converted to sampling voltage by the current detecting module, and is exported to the driving
Voltage module.
It should be noted that current detecting module is a high-precision difference amplifier, it can be by current information electricity consumption
The form of pressure shows.
S102, the driving voltage module export corresponding driving voltage to described according to the sampling voltage that receives
Input driver.
A kind of driving voltage dynamic adjusting method provided in an embodiment of the present invention, by the electric current in circuit for detecting, with dynamic
The method of state adjustment driving voltage carrys out dynamic optimization loss, so as to improve the transfer efficiency of weight load, saves use cost.
Embodiment three
As shown in figure 4, the driving voltage dynamic adjusting method that the embodiment of the present invention three provides, is provided in embodiment two
On the basis of technical solution, to step S102, " driving voltage module is corresponded to according to the sampling voltage output received
Driving voltage to the input driver " advanced optimize.The explanation of term identical or corresponding with the various embodiments described above
Details are not described herein.Specifically, may include steps of:
The driving voltage module receives the sampling voltage from the current detecting module；
The driving voltage module is according to the sampling voltage, and determination is matched with the sampling voltage from preset relation table
Driving voltage；
The driving voltage module exports the driving voltage to the input driver.
Based on above-mentioned optimization, as shown in figure 4, a kind of driving voltage dynamic adjusting method provided in this embodiment, can wrap
Include following steps:
S201, the current detecting module are to flowing to the current input terminal of the inductance, the driving current of current output terminal
It is sampled.
The driving current being sampled to is converted to sampling voltage by S202, the current detecting module, and is exported to the drive
Dynamic voltage module.
S203, the driving voltage module receive the sampling voltage from the current detecting module.
S204, the driving voltage module are determining electric with the sampling from preset relation table according to the sampling voltage
Press matched driving voltage.
Wherein, preset relation table is obtained by largely calculating and surveying, and can therefrom learn that different size of current are used
How many voltage can be just optimal information to drive.
For example, the inductance of a 2mohm DCR, the amplification factor of current detecting module is 50 times, when the electricity by 0.4A
The voltage of 0.8mv will be generated when stream, current detecting module can export the voltage of a 40mv to driving voltage module at this time.Together
Sample, it can be deduced that be 500mV when 5A electric current, when 10A electric current is the voltage of 1V, in conjunction with table 1 just obtain a driving current with
The relation table of sampling voltage, driving voltage, as shown in table 2.
According to table 2, a respective drive electricity will be exported when driving voltage module reception measures different sampling voltages
Pressure is turned this makes it possible to realize the switch for driving metal-oxide-semiconductor with different driving voltages under different electric currents with being optimal
Change the purpose of efficiency.The amplifier of current detecting module in the present invention can select different multiples to adapt to different DCR's
Inductance, or a smart power resistance can be added to do current feedback use behind inductance, only this will increase power consumption.At present
Our driving voltage modules only have 4 component levels, understandable to be, the component level of driving voltage module can be made to more next pair
Different electric currents is answered, different driving voltages is exported.
Table 1
| Driving current (A) | Driving voltage (V) |
| 0-0.4A | 3.3V |
| 0.4-5A | 5V |
| 5-10A | 7V |
| > 10A | 10V |
Table 2
| Driving current (A) | Sampling voltage (V) | Driving voltage (V) |
| 0-0.4A | 0-40mV | 3.3V |
| 0.4-5A | 40-500mV | 5V |
| 5-10A | 500mV-1V | 7V |
| > 10A | > 1V | 10V |
S205, the driving voltage module export the driving voltage to the input driver.
A kind of driving voltage dynamic adjusting method provided in an embodiment of the present invention, by the electric current in circuit for detecting, with dynamic
The method of state adjustment driving voltage carrys out dynamic optimization loss, so as to improve the transfer efficiency of weight load, saves use cost.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (5)
1. a kind of driving voltage dynamic regulating circuit, including reduction voltage circuit module, the reduction voltage circuit module includes PWM control
Device, input driver, metal-oxide-semiconductor and inductance, the PWM controller are connect with the input driver, the input driver point
Not with the metal-oxide-semiconductor and inductance connection, which is characterized in that further include current detecting module and driving voltage module, in which:
The current detecting module connects with the current input terminal of the inductance, current output terminal and the driving voltage module respectively
It connects, for being sampled to the driving current for flowing to the current input terminal of the inductance, current output terminal, and is converted to sampling electricity
Pressure is exported to the driving voltage module；
The driving voltage module is connect with the input driver, for being corresponded to according to the sampling voltage output received
Driving voltage to the input driver.
2. driving voltage dynamic regulating circuit according to claim 1, which is characterized in that the metal-oxide-semiconductor is two, wherein
One metal-oxide-semiconductor is upper bridge metal-oxide-semiconductor, another metal-oxide-semiconductor is lower bridge metal-oxide-semiconductor.
3. a kind of driving voltage dynamic adjusting method is executed using driving voltage dynamic regulating circuit claimed in claims 1-2,
It is characterized in that, which comprises
The current detecting module is sampled the driving current for flowing to the current input terminal of the inductance, current output terminal,
And it is converted to sampling voltage and exports to the driving voltage module；
The driving voltage module exports corresponding driving voltage to the input according to the sampling voltage received and drives
Device.
4. driving voltage dynamic adjusting method according to claim 3, which is characterized in that the current detecting module convection current
Extremely the current input terminal of the inductance, the driving current of current output terminal are sampled, and are converted to sampling voltage and export to institute
The step of stating driving voltage module include:
The current detecting module is sampled the driving current for flowing to the current input terminal of the inductance, current output terminal；
The driving current being sampled to is converted to sampling voltage by the current detecting module, and is exported to the driving voltage mould
Block.
5. driving voltage dynamic adjusting method according to claim 3, which is characterized in that the driving voltage module according to
The sampling voltage that receives exports corresponding driving voltage to the step of input driver and includes:
The driving voltage module receives the sampling voltage from the current detecting module；
The driving voltage module is according to the sampling voltage, the determining and matched drive of the sampling voltage from preset relation table
Dynamic voltage；
The driving voltage module exports the driving voltage to the input driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811125976.6A CN109067151A (en) | 2018-09-26 | 2018-09-26 | Dynamic driving voltage adjusting circuit and dynamic driving voltage adjusting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811125976.6A CN109067151A (en) | 2018-09-26 | 2018-09-26 | Dynamic driving voltage adjusting circuit and dynamic driving voltage adjusting method |
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| CN109067151A true CN109067151A (en) | 2018-12-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394957A (en) * | 2021-06-25 | 2021-09-14 | 上海威固信息技术股份有限公司 | Output driving circuit with self-adaptive output driving capability |
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Application publication date: 20181221 |