CN106921293A - Based on it is numerically controlled can real time linear regulation output DC DC translation circuits - Google Patents
Based on it is numerically controlled can real time linear regulation output DC DC translation circuits Download PDFInfo
- Publication number
- CN106921293A CN106921293A CN201710317602.3A CN201710317602A CN106921293A CN 106921293 A CN106921293 A CN 106921293A CN 201710317602 A CN201710317602 A CN 201710317602A CN 106921293 A CN106921293 A CN 106921293A
- Authority
- CN
- China
- Prior art keywords
- output
- circuit
- pwm
- divider
- voltage
- 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
Links
Classifications
-
- 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
-
- 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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33515—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with digital control
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses it is a kind of based on it is numerically controlled can real time linear regulation output DC DC translation circuits, including DC DC converters, series resistance potential-divider network, feedback closed-loop control circuit and output regulating circuitry.By accessing output regulating circuitry in the series resistance potential-divider network in conventional DC DC translation circuits, pwm control signal is sent by the PWM controller of output regulating circuitry, pwm control signal is transformed into analog voltage signal by D/A converting circuit, analog voltage signal by after divider resistance partial pressure be input into series connection resistance pressure-dividing network, so as to change the output voltage of DC DC converters.The DC DC translation circuits remain the analog feedback closed control circuit of traditional DC DC translation circuits, so as to remain the output performance of traditional DC DC translation circuits, meanwhile, can also realize the real-time wide scope linear regulation to DC DC controller output voltages.
Description
Technical field
The present invention relates to circuit design technique, more particularly to it is a kind of based on it is numerically controlled can real time linear regulation output
DC-DC conversion circuit.
Background technology
DC-DC conversion circuit is the circuit that an input direct voltage is converted into another output DC voltage.Most of
In, DC-DC conversion circuit takes closed-loop control so as to realize good output performance.The allusion quotation of existing DC-DC conversion circuit
Type structure is as shown in figure 1, including DC-DC converter 1, series resistance potential-divider network 2 and feedback closed-loop control circuit 3 three
Point.DC-DC converter 1 is main power section, completes the transmission of energy.Feedback closed-loop control circuit 3 can be by error amplifier
301st, isolation optocoupler 302 (not needed in non-isolated circuit) and pwm control circuit 303 are constituted.Due in error amplifier 301
Reference voltage Vf (i.e. voltage at node a) is general smaller than output voltage, so need to will be defeated using series resistance potential-divider network 2
It is input to again in feedback closed-loop control circuit 3 after going out voltage.The output voltage of this typical DC-DC conversion circuit is not
Adjustable, it can only meet the constant application scenario of supply voltage.
Can realize that output voltage is adjusted by changing the divider resistance R1 in series resistance potential-divider network 2 or divider resistance R2
Section, the regulative mode of this output voltage can not accomplish online dynamic regulation real-time, and can only realize that output voltage exists
Change between several output voltage gears.
Pwm control circuit 303 is directly controlled with open loop can also realize that output voltage is adjusted, when output loading changes, this
The regulative mode for planting output voltage can cause output voltage excursion larger, it is impossible to accomplish accurate controlled output voltage.
The content of the invention
The technical problems to be solved by the invention be to provide it is a kind of based on it is numerically controlled can real time linear regulation output
DC-DC conversion circuit, to solve the problems, such as that existing DC-DC converter cannot accurately adjust output in real time.The present invention is by such as
What lower technical scheme was realized：
It is a kind of based on it is numerically controlled can real time linear regulation output DC-DC conversion circuit, including：
DC-DC converter, the VD for DC input voitage to be converted to a fixation；
Series resistance potential-divider network, the output end with the DC-DC converter is connected, for by the VD
Partial pressure；
Feedback closed-loop control circuit, is connected with the series resistance potential-divider network, at the same also with the DC-DC converter
Controlled end is connected, for receiving the VD through the voltage after partial pressure, and according to the VD through dividing
Voltage after pressure controls the DC-DC converter to export the VD of the fixation all the time；The DC-DC conversion circuit
Also include output regulating circuitry；The output regulating circuitry includes：
PWM controller, for exporting pwm control signal；
D/A converting circuit, is connected with the PWM controller, for the pwm control signal to be converted into analog voltage
Signal；
Bleeder circuit, for that will be exported after the analog voltage signal partial pressure to the series resistance potential-divider network, to adjust
Save the size of the VD that the feedback closed-loop control circuit receives through the voltage after partial pressure.
Further, the D/A converting circuit includes：
PWM amplifying circuits, are connected with the PWM controller, for amplifying the pwm control signal；
RC filter circuits, are connected with the PWM amplifying circuits, for carrying out RC filtering to the pwm control signal after amplification,
Generation analog level signal；
Voltage follower, is connected with the RC filter circuits, for accessing the analog level signal and to the simulation
Level signal exports the analog voltage signal after entering row buffering.
Further, the series resistance potential-divider network includes divider resistance R1 and divider resistance R2；
One end of the divider resistance R1 is connected with the output end of the DC-DC converter, and the other end and the partial pressure are electric
Hinder one end connection of R2, the other end ground connection of the divider resistance R2；
The public connecting end of the divider resistance R1 and divider resistance R2 respectively with the feedback closed-loop control circuit
Input and the bleeder circuit output end connection.
Further, the bleeder circuit is divider resistance R3.
The present invention compared with prior art, has the following advantages that and beneficial effect：
The DC-DC conversion circuit that the present invention is provided includes DC-DC converter, series resistance potential-divider network, feedback closed loop control
Circuit processed and output regulating circuitry.Adjusted by accessing output in the series resistance potential-divider network in conventional DC-DC conversion circuit
Economize on electricity road, pwm control signal is sent by the PWM controller of output regulating circuitry, and pwm control signal turns by D/A converting circuit
Become analog voltage signal, analog voltage signal by being input into series connection resistance pressure-dividing network after divider resistance partial pressure, so as to change
The output voltage of DC-DC converter.The DC-DC conversion circuit remains the analog feedback closed loop control of traditional DC-DC conversion circuit
Circuit processed, so as to remain the output performance of traditional DC-DC conversion circuit, meanwhile, can also realize exporting electricity to DC-DC controllers
The real-time wide scope linear regulation of pressure.
Brief description of the drawings
Fig. 1 is the typical structure schematic diagram of existing DC-DC conversion circuit；
Fig. 2 be it is provided in an embodiment of the present invention based on it is numerically controlled can real time linear regulation output DC-DC convert electricity
The structural representation on road；
Fig. 3 is the first the current direction schematic diagram between divider resistance R1, R2, R3；
Fig. 4 is second current direction schematic diagram between divider resistance R1, R2, R3；
Fig. 5 is the third current direction schematic diagram between divider resistance R1, R2, R3.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail.
As shown in Fig. 2 it is provided in an embodiment of the present invention based on it is numerically controlled can real time linear regulation output DC-DC become
Circuit is changed, including：
DC-DC converter 1, the VD for DC input voitage to be converted to a fixation；
Series resistance potential-divider network 2, the output end with the DC-DC converter 1 is connected, for the direct current output is electric
Pressure partial pressure；
Feedback closed-loop control circuit 3, is connected with the series resistance potential-divider network 2, at the same also with the DC-DC converter
1 controlled end connection, for receiving the VD through the voltage after partial pressure, and passes through according to the VD
Voltage after partial pressure controls the DC-DC converter 1 to export the VD of the fixation all the time.Wherein, feedback closed loop
Control circuit 3 can be made up of error amplifier 301, isolation optocoupler 302 and pwm control circuit 303.
The DC-DC conversion circuit also includes output regulating circuitry 4；The output regulating circuitry 4 includes：
PWM controller 41, for exporting pwm control signal；
D/A converting circuit 42, is connected with the PWM controller 41, for the pwm control signal to be converted into simulation
Voltage signal；
Bleeder circuit, for that will be exported after the analog voltage signal partial pressure to the series resistance potential-divider network 2, to adjust
Save the size of the VD that the feedback closed-loop control circuit 3 receives through the voltage after partial pressure.
In the present embodiment, the D/A converting circuit 42 includes：
PWM amplifying circuits 421, are connected with the PWM controller 41, for amplifying the pwm control signal；
RC filter circuits 422, are connected with the PWM amplifying circuits 421, for being carried out to the pwm control signal after amplification
RC is filtered, and generates analog level signal；
Voltage follower 423, is connected with the RC filter circuits 422, for accessing the analog level signal and to institute
State after analog level signal enters row buffering and export the analog voltage signal.
The series resistance potential-divider network 2 includes divider resistance R1 and divider resistance R2, and physical circuit is as shown in Figure 2.
One end of the divider resistance R1 is connected with the output end of the DC-DC converter 1, and the other end and the partial pressure are electric
Hinder one end connection of R2, the other end ground connection of the divider resistance R2.
The public connecting end of the divider resistance R1 and divider resistance R2 respectively with the feedback closed-loop control circuit 3
Input and the bleeder circuit output end connection.
The bleeder circuit is divider resistance R3.
The course of work of DC-DC conversion circuit is as described above：
PWM controller 41 sends the adjustable pwm control signal of dutycycle, and real-time adjustment pwm control signal as needed
Dutycycle.If the dutycycle of the pwm control signal of the output of PWM controller 41 is D.The PWM control letters that PWM controller 41 sends
Number ceiling voltage it is smaller, pwm control signal is converted to the larger pwm control signal of ceiling voltage by PWM amplifying circuits 421
The ceiling voltage for exporting pwm control signal at node d afterwards is Vcc.PWM amplifying circuits 421 include resistance R5 and FET
Q1, physical circuit is as shown in Figure 2.Pwm control signal after amplification is carried out RC filtering, generation simulation electricity by RC filter circuits 422
Ordinary mail number, the size of the analog voltage that will be obtained at node c is Vcc* (1-D).RC filter circuits 422 include resistance R4 and electricity
Hold C1, physical circuit is as shown in Figure 2.Electric capacity C1 can select the electric capacity compared with low capacity.Voltage follower 423 has input resistance high
Anti-, low output impedance characteristic, high input impedance charcteristic ensure that voltage will not be inclined because of the access of voltage follower 423 at c
Change is moved, low output impedance characteristic reduces the influence to divider resistance, and the voltage of the output of voltage follower 423 is (i.e. at node b
Voltage) Vs also be Vcc* (1-D).Because series connection resistor voltage divider network interior joint a is input in feedback closed-loop control circuit 3
The negative terminal of error amplifier 301, according to error amplifier principle, Vf is constant for node a voltages, and node a is to feedback closed loop control
The electric current of circuit processed 3 is minimum, can be ignored.Flowing through the electric current in node a has by the electric current Ia of divider resistance R1, passes through
The electric current Ib of divider resistance R2, by the electric current Ic of divider resistance R3.Because the Ib senses of current are constant, so according to Ia, Ic electricity
Stream direction can be divided into 3 kinds of situations：
The first situation is as shown in Figure 3：
Ic=Ia+Ib, and Ia=(Vf-Vo)/R1, Ib=Vf/R2, Ic=(Vs-Vf)/R3, wherein R1 are divider resistance
R1 resistances, R2 is divider resistance R2 resistances, and R3 is divider resistance R3 resistances.It is not difficult to extrapolate Vo=(Vcc*R1/R3) * D+R1*
Vf*(1/R1+R/R2+1/R3)-Vcc*R1/R3。
Second situation is as shown in Figure 4：
Ib=Ia+Ic, and Ia=(Vo-Vf)/R1, Ib=Vf/R2, Ic=(Vs-Vf)/R3, wherein R1 are divider resistance
R1 resistances, R2 is divider resistance R2 resistances, and R3 is divider resistance R3 resistances.It is not difficult to extrapolate Vo=(Vcc*R1/R3) * D+R1*
Vf*(1/R1+R/R2+1/R3)-Vcc*R1/R3。
The third situation is as shown in Figure 5：
Ia=Ib+Ic, and Ia=(Vo-Vf)/R1, Ib=Vf/R2, Ic=(Vf-Vs)/R3, wherein R1 are divider resistance
R1 resistances, R2 is divider resistance R2 resistances, and R3 is divider resistance R3 resistances.It is not difficult to extrapolate Vo=(Vcc*R1/R3) * D+R1*
Vf*(1/R1+R/R2+1/R3)-Vcc*R1/R3。
Can be drawn from the above-mentioned calculating analysis according to Fig. 3, Fig. 4, Fig. 5, from the output electricity that different current relationships are extrapolated
Vo is completely the same with the dutycycle expression formula of the pwm control signal that PWM controller 41 is exported for pressure, and shows linear relationship.
Therefore by foregoing circuit, can be realized with reference to PWM controller 41 linear to the real-time wide scope of DC-DC controller output voltages Vo
Regulation.
Output is accessed at a nodes that the present invention passes through the series resistance potential-divider network 2 in conventional DC-DC conversion circuit
Regulation circuit 4, pwm control signal is sent by the PWM controller 41 of output regulating circuitry 4, and pwm control signal is by digital-to-analogue conversion
Circuit 42 is transformed into analog voltage signal, and output of the analog voltage signal by divider resistance so as to change DC-DC converter is electric
Pressure Vo.
The DC-DC conversion circuit that the present invention is provided remains the analog feedback closed-loop control electricity of traditional DC-DC conversion circuit
Road 3, so as to remain the output performance of traditional DC-DC conversion circuit.The digital control circuit comprising PWM controller 41 is added,
By change pwm control signal can dynamic regulation DC-DC converter 1 in real time output voltage.In digital control part, PWM
The dutycycle size of control signal is linear with the output voltage of DC-DC converter 1, can by changing pwm control signal
To realize the output voltage of DC-DC converter 1 linear regulation in a wide range.Can realize that DC-DC becomes using pwm control signal
The electrodeless regulation of the output voltage of parallel operation 1, and the voltage output of DC-DC converter 1 can be closed by PWM controller 41.
Above-described embodiment is only preferred embodiment, the protection domain being not intended to limit the invention, every of the invention
Any modification, equivalent and improvement made within spirit and principle etc., should be included within the scope of the present invention.
Claims (4)
1. it is a kind of based on it is numerically controlled can real time linear regulation output DC-DC conversion circuit, including：
DC-DC converter, the VD for DC input voitage to be converted to a fixation；
Series resistance potential-divider network, the output end with the DC-DC converter is connected, for the VD to be divided
Pressure；
Feedback closed-loop control circuit, is connected with the series resistance potential-divider network, while also controlled with the DC-DC converter
End connection, for receiving the VD through the voltage after partial pressure, and according to the VD after partial pressure
Voltage control the DC-DC converter to export the VD of the fixation all the time；Characterized in that, the DC-DC
Translation circuit also includes output regulating circuitry；The output regulating circuitry includes：
PWM controller, for exporting pwm control signal；
D/A converting circuit, is connected with the PWM controller, for the pwm control signal to be converted into analog voltage signal；
Bleeder circuit, for will be exported to the series resistance potential-divider network, to adjust after the analog voltage signal partial pressure
State the size of the VD that feedback closed-loop control circuit receives through the voltage after partial pressure.
2. as claimed in claim 1 based on it is numerically controlled can real time linear regulation output DC-DC conversion circuit, its feature
It is that the D/A converting circuit includes：
PWM amplifying circuits, are connected with the PWM controller, for amplifying the pwm control signal；
RC filter circuits, are connected with the PWM amplifying circuits, for carrying out RC filtering to the pwm control signal after amplification, generation
Analog level signal；
Voltage follower, is connected with the RC filter circuits, for accessing the analog level signal and to the analog level
Signal exports the analog voltage signal after entering row buffering.
3. as claimed in claim 1 based on it is numerically controlled can real time linear regulation output DC-DC conversion circuit, its feature
It is that the series resistance potential-divider network includes divider resistance R1 and divider resistance R2；
One end of the divider resistance R1 is connected with the output end of the DC-DC converter, the other end and the divider resistance R2
One end connection, the divider resistance R2 the other end ground connection；
The divider resistance R1 is defeated with the feedback closed-loop control circuit respectively with the public connecting end of the divider resistance R2
The output end for entering end and the bleeder circuit is connected.
4. as claimed in claim 1 based on it is numerically controlled can real time linear regulation output DC-DC conversion circuit, its feature
It is that the bleeder circuit is divider resistance R3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710317602.3A CN106921293A (en) | 2017-05-08 | 2017-05-08 | Based on it is numerically controlled can real time linear regulation output DC DC translation circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710317602.3A CN106921293A (en) | 2017-05-08 | 2017-05-08 | Based on it is numerically controlled can real time linear regulation output DC DC translation circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106921293A true CN106921293A (en) | 2017-07-04 |
Family
ID=59567859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710317602.3A Pending CN106921293A (en) | 2017-05-08 | 2017-05-08 | Based on it is numerically controlled can real time linear regulation output DC DC translation circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106921293A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110120740A (en) * | 2018-02-07 | 2019-08-13 | 青岛海信电器股份有限公司 | A kind of DC-DC variable voltage output circuit and terminal installation |
| CN110635678A (en) * | 2018-06-25 | 2019-12-31 | 青岛海信电器股份有限公司 | DC-DC variable voltage output circuit and terminal device |
| CN112311209A (en) * | 2019-07-29 | 2021-02-02 | 希望森兰科技股份有限公司 | Voltage-stabilized power supply device for outputting adjustable voltage |
| CN112928910A (en) * | 2021-02-08 | 2021-06-08 | 上海空间电源研究所 | Voltage-regulating output switch power supply |
| CN113849027A (en) * | 2021-09-30 | 2021-12-28 | 深圳安吉尔饮水产业集团有限公司 | Gear adjusting current source circuit |
| CN117175937A (en) * | 2023-10-31 | 2023-12-05 | 深圳市好盈科技股份有限公司 | BEC multi-gear adjustment output circuit, method, equipment and medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068095A (en) * | 2007-05-30 | 2007-11-07 | 吴壬华 | Switch power supply output voltage regulating method and realizing circuit |
| CN101174791A (en) * | 2007-10-29 | 2008-05-07 | 华为技术有限公司 | Electric power output voltage-operated device |
| CN102545599A (en) * | 2010-12-07 | 2012-07-04 | 北大方正集团有限公司 | Switch voltage-stabilized power supply and voltage stabilizing method thereof |
| CN102931842A (en) * | 2012-10-12 | 2013-02-13 | 华为技术有限公司 | Chip dynamic voltage regulating circuit and terminal equipment |
| US20150249396A1 (en) * | 2014-02-28 | 2015-09-03 | Delta Electronics (Shanghai) Co., Ltd. | Dc/dc converter and control method thereof |
-
2017
- 2017-05-08 CN CN201710317602.3A patent/CN106921293A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068095A (en) * | 2007-05-30 | 2007-11-07 | 吴壬华 | Switch power supply output voltage regulating method and realizing circuit |
| CN101174791A (en) * | 2007-10-29 | 2008-05-07 | 华为技术有限公司 | Electric power output voltage-operated device |
| CN102545599A (en) * | 2010-12-07 | 2012-07-04 | 北大方正集团有限公司 | Switch voltage-stabilized power supply and voltage stabilizing method thereof |
| CN102931842A (en) * | 2012-10-12 | 2013-02-13 | 华为技术有限公司 | Chip dynamic voltage regulating circuit and terminal equipment |
| US20150249396A1 (en) * | 2014-02-28 | 2015-09-03 | Delta Electronics (Shanghai) Co., Ltd. | Dc/dc converter and control method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110120740A (en) * | 2018-02-07 | 2019-08-13 | 青岛海信电器股份有限公司 | A kind of DC-DC variable voltage output circuit and terminal installation |
| CN110635678A (en) * | 2018-06-25 | 2019-12-31 | 青岛海信电器股份有限公司 | DC-DC variable voltage output circuit and terminal device |
| CN112311209A (en) * | 2019-07-29 | 2021-02-02 | 希望森兰科技股份有限公司 | Voltage-stabilized power supply device for outputting adjustable voltage |
| CN112928910A (en) * | 2021-02-08 | 2021-06-08 | 上海空间电源研究所 | Voltage-regulating output switch power supply |
| CN113849027A (en) * | 2021-09-30 | 2021-12-28 | 深圳安吉尔饮水产业集团有限公司 | Gear adjusting current source circuit |
| CN113849027B (en) * | 2021-09-30 | 2023-12-01 | 深圳安吉尔饮水产业集团有限公司 | Gear adjusting current source circuit |
| CN117175937A (en) * | 2023-10-31 | 2023-12-05 | 深圳市好盈科技股份有限公司 | BEC multi-gear adjustment output circuit, method, equipment and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106921293A (en) | Based on it is numerically controlled can real time linear regulation output DC DC translation circuits | |
| CN107104595A (en) | The self-adaptable slop compensation circuit of buck converter is controlled suitable for Peak Current Mode | |
| CN105337500B (en) | Power inverter and the method responded for adjusting the linear transient of power inverter | |
| CN105827123B (en) | Power converting circuit and its drive control circuit | |
| CN109586565A (en) | COT controlled multiphase direct current converter, control circuit and current sharing method | |
| CN104578792B (en) | Line loss compensation device, switch power supply system and line loss compensation method | |
| CN105141114B (en) | Switch converter with constant on-time control and control circuit thereof | |
| CN107294391B (en) | Power conversion module and power supply system composed of same | |
| CN106886243B (en) | A kind of low pressure difference linear voltage regulator with fast response characteristic | |
| CN108512422A (en) | A kind of buck mode DC-DC converter of fixed turn-on time control | |
| CN105576645B (en) | A kind of multiple DC power system energy internet and interconnected method | |
| CN104793672A (en) | Low-dropout linear voltage regulator with high power supply rejection ratio | |
| CN105429460A (en) | DC-DC converter with line loss compensation function | |
| CN202067171U (en) | Low dropout linear regulator | |
| CN107742983B (en) | Constant-current constant-voltage control module, voltage reducing circuit and compensation method for sharing compensation | |
| CN107066013B (en) | A kind of logging instrument amplifier power supply self-adapting adjusting apparatus | |
| CN113691114B (en) | Output maximum load current control circuit and method | |
| CN106505835B (en) | Voltage clamp circuit and DC-DC converter | |
| CN102290989B (en) | Voltage adjusting module and power supply device | |
| CN103631299A (en) | Constant-differential-pressure and variable-output-voltage low dropout regulator | |
| CN107544606B (en) | A kind of high PSRR low pressure difference linear voltage regulator | |
| CN104753346B (en) | Technology for improving efficiency of BUCK circuit | |
| CN107066000B (en) | A kind of logging instrument amplifier power supply self-adapting regulation method | |
| CN101132147A (en) | DC-DC switch power source and its output voltage regulation method | |
| CN206226263U (en) | Voltage clamp circuit and DC DC converters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170704 |