CN101599697A - Utilize secondary buck converter, have the dual input AC and the DC power supply of direct current output able to programme - Google Patents
Utilize secondary buck converter, have the dual input AC and the DC power supply of direct current output able to programme Download PDFInfo
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- CN101599697A CN101599697A CNA2008101710055A CN200810171005A CN101599697A CN 101599697 A CN101599697 A CN 101599697A CN A2008101710055 A CNA2008101710055 A CN A2008101710055A CN 200810171005 A CN200810171005 A CN 200810171005A CN 101599697 A CN101599697 A CN 101599697A
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Abstract
A kind of dual input AC and DC power supply of utilizing secondary buck converter, having direct current output able to programme disclosed.A kind of power inverter (10) comprising: first circuit (22) that AC-input voltage (12) is transformed to first VD; DC input voitage (14) is transformed to the second circuit (24) of second VD; Tertiary circuit (25), be used for receiving described first and second VD, in response, provide selectable VD in first output (16), wherein, described selectable VD is set up as the function of replaceable module (15).
Description
Present patent application be priority date be October 31 calendar year 2001, international filing date be February 8, international application no in 2002 be 02815764.8 for PCT/US02/03542, national applications number, denomination of invention divides an application for the application for a patent for invention of " utilize secondary buck converter, have the dual input AC and the DC power supply of direct current output able to programme ", it all is incorporated herein by reference at this.
To quoting of related application
The application is relevant with the U.S. Patent application Serial No.10/005961 in submission on December 3 calendar year 2001 that assigns jointly, and requires its priority.The content of this application at this as a reference.
Technical field
Present invention relates in general to the power inverter field, relate to a kind of power inverter particularly from dual input AC and DC converting to programmable direct current output.
Background technology
Along with mobile electronic product, increase continuously such as the use of notebook computer, PDA, mobile phone etc., the demand for the low cost of these products power supplies and charging, compact power supply is also constantly increased.Most of mobile product manufacturer generally all provides plug-type power supply adaptor with these mobile products, with user friendly power supply requirement.
Power supply adaptor of today generally is AC-to DC or DC-to-DC power inverter, and they are designed to the DC input voitage of delivering to mobile device is boosted or step-down.Utilize the AC-to DC adapter, for example, the user can come to be most of mobile power supply equipments by simply adapter being inserted in the common interchange flush receptacle that most of families or office can find usually.Similarly, but when having only the direct-current input power supplying time spent, for example in automobile or aircraft, the user still can be mobile power supply equipment by the general DC-to-DC adapter that uses standard simply.Usually, two kinds of adapters all design or are customized to the VD that regulation is provided, with the difference of the kind of the mobile device of need power supplies, this voltage usually at 5VDC to 30VDC.
Although these voltage adapters can provide direct power supply and charging ability easily, require the user to carry separately independently adapter usually so that for each independently mobile device power supply is provided.This often means that the user has to carry a plurality of adapters: one is used for alternating current input power supplying, and another is used for direct-current input power supplying; And the user will carry a plurality of adapters usually so that be a plurality of power devices.Like this, if once carry a plurality of equipment, then the user of mobile product just is forced to carry a plurality of scattered power supply adaptors.
Therefore, being necessary that a kind of power supply can solve with carrying is multiple and moves or the required relevant system management problem of all various power supply units of powering portable devices.And such power inverter preferably can also satisfy the power supply requirement of different mobile devices, and response AC-input voltage or DC input voitage provide the VD through filtering and adjustment.And by having power source conversion or having a plurality of lead-out terminals, the user can provide voltage simultaneously to the different some mobile devices of power supply requirement, and do not need to consider input voltage be exchange or direct current.
Summary of the invention
The present invention reaches above-mentioned technical purpose by such power inverter: this power inverter can provide two VD from AC-input voltage or DC input voitage.This power inverter can be programmed from the outside, thus the combination of the voltage and current of covering wide scope, thus be applicable to various mobile products.In addition, this power inverter also solves the problem of management relevant with following situation: in order to give various mobile product power supplies, need some different interface units.By having the dual output voltage circuit, the mobile product user can be the multiple mobile power supply equipment of various power specifications simultaneously.
In a kind of preferred embodiment, the present invention is a kind of power inverter, and it has first circuit that is suitable for receiving an AC-input voltage and first VD able to programme is provided.This power inverter comprises and is suitable for responding the second circuit that DC input voitage provides second VD able to programme.This power inverter also comprises a tertiary circuit.This circuit produces selectable VD corresponding to first and second VD that receive in first output.In addition, this tertiary circuit generally includes a feedback circuit, is suitable for joining with a replaceable module.Set up the voltage level of VD the user selection of this programming module parts permission power inverter.This power inverter also comprises one the 4th circuit, and the 4th circuit is couple to first output.The 4th circuit provides one second VD as second output, and this second VD is independent of and is lower than described selectable VD basically.
In another embodiment, the present invention is a kind of method in response to AC-input voltage or at least two independently selectable VD of DC input voitage generation.This method realizes by following operation: interchange that will receive or DC input voitage are first VD able to programme at first output transform.Be to receive operation after this map function, wherein, described translation circuit receives described first VD.This translation circuit starts a generating run, generates one second VD, and it is independent of and is lower than described VD able to programme basically.
Description of drawings
By the detailed description of preferred embodiment being carried out below in conjunction with accompanying drawing, those of ordinary skill in the art can understand the advantage of the present invention and specific embodiment thereof.In the accompanying drawing:
Figure 1A illustrates the have dual input AC of two direct voltage outputs and the block diagram of dc power converter of the present invention;
Figure 1B illustrates the exploded view of the converter with detachable reduction voltage circuit;
Fig. 2 illustrates according to the present invention the circuit diagram of power converter circuit as shown in Figure 1;
Fig. 3 is the detailed circuit diagram of DC-to-DC decompression converter circuit of the present invention.
Embodiment
Each innovative point of the application is described below in conjunction with present highly preferred embodiment.But, should be appreciated that this class embodiment has only provided many useful purposes and a little example of innovative point.Generally speaking, the statement of being done in the application's specification not necessarily limits claimed various inventions.In addition, some statement may only be applicable to some inventive features, and is not suitable for further feature.
In Figure 1A, illustrate the dual input direct current AC power converter 10 that has two direct voltage outputs able to programme according to the present invention.Best, this dual input direct current AC power converter 10 comprises a power converter circuit 20, and the latter has: AC-to DC converter 22, DC-to-DC booster converter 24, feedback circuit 25, a filter circuit 25 and a DC-to-DC buck converter 28.Can see that this power converter circuit 20 is arranged in a shell 13, provide first VD able to programme at dc output end 16 valuably, provide second VD able to programme at terminal 18.These two VD can as the AC and DC input voltage the two function and generate.
When work, direct current receives AC signal to AC converter 22 by input terminal 12, provides adjusted VD at node N1.Similarly, DC-to-DC booster converter 24 can receive AC-input voltage by input terminal 14 in its input, and also provides adjusted VD at node N1.
As shown in the figure, filter circuit 25 has the input that interrelates with converter 22 and 24 output separately.In a preferred embodiment, this filter circuit is suitable for providing filtered VD at Section Point N2.This node is supplied with lead-out terminal 16 with for example 75 watts power output subsequently.
The input of DC-to-DC buck converter 28 is coupled in node N2, and second VD is provided, and this voltage is fed to lead-out terminal 18 then, and the power output of this terminal for example is 10 watts.Best, buck converter 28 discretely (discreetly) to filtered direct voltage step-down, one independently lead-out terminal 18 places produce second VD.In a selected embodiment, buck converter 28 drops to about 3VDC to 15VDC with filtered VD.Useful is that this second VD that converter 28 produces is independent of, and is lower than the VD at terminal 16 places basically.This makes that user of the present invention not only can be to for example kneetop computer power supply of high-power ancillary equipment, and can be to another low-power ancillary equipment such as power supplies such as mobile phone, PDA.In addition, the present invention allows simultaneously these ancillary equipment to be powered with same converter, and no matter input voltage is direct current or interchange.Buck converter 28 physically can separate with main shell, shown in Figure 1B, thereby can pick out VD in 18 minutes from lead-out terminal with providing the different reduction voltage circuits of different output voltages optionally to be connected to shell 13.
See Fig. 2 now, wherein illustrate, the circuit diagram of the power converter circuit 20 of dual input AC/dc power converter 10 of in Fig. 1, describing according to embodiments of the invention.According to the detailed description here, in a preferred embodiment, power converter circuit 20 comprises three independently converters: direct current is to AC power converter 22, DC-to-DC booster converter 24 and DC-to-DC buck converter 28.
The AC-to DC converter
AC-to DC converter 22 comprises a real off-line change over switch (off lineswitcher), and the latter is by reversal topological (fly-back topology) design.Utilize full wave bridge rectifier BD1 and filtering capacitor C1 that the ac input signal that input terminal 12 receives is carried out full-wave rectification, this filtering capacitor constitutes direct-voltage path (bus), and described change over switch is from this direct-voltage path operation.After AC signal is passed through the full-wave bridge rectification, the EMI filtering that inductor L1 adds AC signal.AC-to DC converter 22 also comprises a master controller IC1, and it is designed to a current mode pulse width modulator (PWM).Master controller IC1 also is designed to have a single-ended output, is coupled with the totem-pole driving transistors on it.This AC-to DC converter 22 has main power switch Q1, and the latter drives main converter T1.In a preferred embodiment, converter T1, Schottky diode D11 and filtering capacitor C24 and C25 combine at node N1 provides VD.
As previously mentioned, filter circuit 25 filtering of permission to adding from the VD of node N1.This filter circuit 25 itself comprises inductor L3, capacitor C26 and converter NF1.Best, this filter circuit 25 produces filtered VD in output 16, has peak-to-peak noise (peak-to-peak noise) and hum (ripple) less than 100mv.
By a single feedback control loop, feedback circuit 26 can be provided by the filtered VD that is provided by converter 22 and 24.This feedback circuit 26 is couple to has a replaceable module that comprises the key 15 of resistor R 53.Like this, the present invention optionally programmes to the VD that receives at lead-out terminal 16 then with regard to allowing the user.This feedback circuit 26 comprises an optically coupled circuit, and this circuit comprises pair of series (i.e. stack) optical coupler PH1 and PH3, and each optical coupler is couple to the output of operational amplifier IC4-A and IC4-B.Best, these optical couplers are arranged along the feedback control loop of feedback circuit 25.In addition, feedback circuit 26 is adjusted converter 22 and 24 VD through filtering that produce effectively by a single feedback control loop.In stack during described optical coupler, the present invention also allow power inverter 10 each terminal 12 and 14 and lead-out terminal 16 between keep suitable I/O and isolate.
Best, by the output current limitation function of integrated circuit (IC) 4A, resistor R 33, R37, R38 and R39 and programming resistors device R54 realization converter 22.
Utilize optical coupler PH2 and voltage stabilizing didoe ZD2 to realize the overvoltage protection of AC-to DC converter 22.In a preferred embodiment, voltage stabilizing didoe ZD2 is set at 25V, like this, when in avalanche mode, makes transistor one side of optical coupler PH2 that transistor Q3 is biased to conducting state.When being in conducting state, transistor Q3 drags down the pin one of integrated manipulator IC1, and the work duty ratio (operating duty cycle) of integrated manipulator is pulled to 0%.This makes VD become 0 volt.Equally, when transistor Q1 conducting, transistor Q2 also is forced to conducting, forces these two transistors by breech lock then.If transistor Q1 and Q2 by breech lock, then must be restarted the input power supply, so that open power inverter 10 once more.DC-to-DC converter
DC-to-DC converter 24 utilizes the integrated manipulator IC2 with converter 22 employed identical type according to the layout designs of boosting.In DC-to-DC converter 24, transistor Q8 is as main power switch, and diode D6 is as main converter.Best, inductor L1 is as the power amplification inductor, and it is made of annular magnetic core type inductor.The cathode leg that should be appreciated that diode D11 and D8 couples together, constitute one " or " layout (ORedconfiguration), only need an input filter.This has advantageously eliminated and has used second group of circuit board space that filtering capacitor is required.
The same with AC-to DC converter 22, DC-to-DC converter 24 also is designed in the approximately frequency work of 80KHz.For AC-to DC converter 22, operating frequency is set by resistor R 13 and capacitor C7.Similarly, the operating frequency of converter 24 is set by resistor R 28 and capacitor C28.
DC-to-DC converter 24 comprises an excess voltage protection, and this circuit comprises voltage stabilizing didoe ZD2, resistor R 23, R24, R48, transistor Q415 and thyristor SC1.Voltage stabilizing didoe ZD2 is provided with overvoltage protection point (OVP), and it preferably is set to 25VDC.Usually, there is not current flows through resistor R48.But if voltage stabilizing didoe ZD2 begins conduction current, then the voltage drop at R48 two ends is drawn high its collector terminal voltage even as big as making transistor Q6 conducting, thereby thyristor SC1 is opened.When thyristor SC1 opened, its pin one with integrated manipulator IC2 dragged down.Like this, if the voltage of the pin one of integrated manipulator IC2 is low, then its output driver is forced in 0% duty ratio work, thereby produces 0 volt VD at pin 6.Advantageously, thyristor SC1 is as the power latch circuit, if detect the voltage that is higher than 25VDC at node N1, then it requires to restart the input power supply, so that open power inverter 10.
Utilize the temperature of the shell 13 of thermistor NTC3 monitoring power inverter 10.For example,, then can cause the resistance value of thermistor NTC3 to descend, thereby make transistor Q9 conducting, the pin one of the integrated circuit (IC) 2 of converter 24 is dragged down if the temperature of shell 13 has corresponding rising.In addition, this makes optical coupler PH2 be biased to such an extent that be enough to start the latch circuit that comprises transistor Q1 and Q2, and this circuit will be closed power inverter 22.In addition, make the work of heat protection function of power inverter 10 no matter what receive at separately input terminal is to exchange or DC input voitage.
Fig. 3 illustrates the detailed circuit diagram of DC-to-DC buck converter 28 of the present invention.Be similar to converter 22 and 24, this buck converter 28 has an integrated circuit controller IC1, is suitable for producing duty ratio turn-on time (on-time duty cycle) and comes the power supply for transistor switch Q1.The operating frequency of controller IC 1 is set by capacitor C6 between pin 4 that is coupled in IC1 and the ground and the resistor R 1 that is coupled between pin 4 and 8.In a selected embodiment, diode D1 comprises a Schottky diode and is used as clamp diode.Inductor L1 is a power output inductor, and the grid of power transistor Q1 is couple to Vout.Fuse F1 is illustrated as between the drain terminal that is coupled in Vin and power transistor Q1, advantageously provides the current protection to buck converter 28.
In addition, the input Vin of buck converter 28 is couple to the output of filter circuit 25 at node N2, and wherein Vin receives VD through filtering from this node.In a preferred embodiment, buck converter 28 provides second VD at Vout, and this voltage is couple to lead-out terminal 18.Advantageously, buck converter 28 provides one second VD with (discreetly) step-down discretely of filtered VD at lead-out terminal 18, and it is independent of, and is lower than the VD at lead-out terminal 16 places basically.Similarly, the VD of buck converter 28 make the user can for low-power ancillary equipment such as mobile phone, PDA and/or similar mobile power supply equipment.In a selected embodiment, buck converter 28 also can provide 3VDC VD to 15VDC at lead-out terminal 18, this voltage is to determine optionally that as the function of the set point value of the resistor R of using in specific buck converter 28 1 gross power output for example is 10 watts.As previously mentioned, this buck converter 28 can be accommodated in one independently, in the detachable program module, make the user can be programmed for the function of different relevant buck converter modules to the VD selectivity of terminal 18.
More than invention has been described at concrete preferred implementation.For the those of ordinary skills that read the application, many variations and modification all are conspicuous.Therefore, appended claim should be interpreted as having wide as far as possible scope with respect to prior art, to comprise described variation and modification.
Claims (25)
1. a power inverter (10) comprising:
AC-input voltage (12) is transformed to first circuit (22) of first VD;
DC input voitage (14) is transformed to the second circuit (24) of second VD;
Tertiary circuit (25), be used for receiving described first and second VD, in response, provide selectable VD in first output (16), wherein, described selectable VD is set up as the function of replaceable module (15).
2. power inverter as claimed in claim 1, wherein, described first circuit and described second circuit locate to receive separately AC-input voltage and DC input voitage at public single connector (17).
3. power inverter as claimed in claim 1, wherein, described replaceable module comprises passive component (R53), wherein said selectable VD is the function of the value of this passive component.
4. power inverter as claimed in claim 3, wherein, described passive component is resistor (R53).
5. power inverter as claimed in claim 1, wherein, described tertiary circuit comprises the feedback circuit (26) that is couple to described first circuit and described second circuit, described feedback circuit adjust described first and second circuit described first and second direct voltages that produce respectively.
6. power inverter as claimed in claim 5, wherein, described feedback circuit comprises single feedback control loop.
7. power inverter as claimed in claim 1, wherein, described first and second VD are identical basically, and are provided for common node (N1).
8. power inverter as claimed in claim 1, also comprise the 4th circuit (28), couple with described tertiary circuit, and provide converter second VD, make described converter second VD be lower than described selectable VD whereby in second output (18).
9. power inverter as claimed in claim 8, wherein, described the 4th circuit (28) is alternative the separation with the remainder of converter (10), thereby allows the 4th different circuit to be couple to converter, to obtain different converters second VD.
10. power inverter as claimed in claim 8, wherein, described the 4th circuit comprises the DC-to-DC buck converter that described converter second VD is provided.
11. power inverter as claimed in claim 10, wherein, this DC-to-DC buck converter is suitable for providing described converter second VD of 3VDC to 15VDC.
12. power inverter as claimed in claim 8, wherein, described converter second VD is independent of described selectable VD.
13. power inverter as claimed in claim 8, wherein, described converter provides described selectable VD and described converter second VD simultaneously.
14. power inverter as claimed in claim 1 also comprises filter circuit (25), this filter circuit is suitable for the described first and second VD filtering, and provides corresponding first and second VD through filtering at common node (N2).
15. power inverter as claimed in claim 1, wherein, described tertiary circuit comprises the DC-to-DC downconverter.
16. power inverter as claimed in claim 15, wherein, described second circuit comprises the DC-to-DC up converter.
17. power inverter as claimed in claim 16, wherein, described up converter and downconverter are the switch converters in same frequency (80KHz) work.
18. power inverter as claimed in claim 1, wherein, described first circuit comprises the AC-to DC flyback converter, is suitable for providing first VD of 15VDC to 24VDC.
19. power inverter as claimed in claim 18, wherein, described second circuit comprises the DC-to-DC booster converter, is suitable for providing second VD of 15VDC to 24VDC.
20. power inverter as claimed in claim 1, wherein, even described second circuit also is transformed to described DC input voitage described second VD when described DC input voitage changes.
21. power inverter as claimed in claim 1, wherein, described replaceable module is at the described first export-restriction output current.
22. power inverter as claimed in claim 1 also comprises protective circuit (22,24), this protective circuit provides over-voltage protection function.
23. power inverter as claimed in claim 1, wherein, described first circuit is suitable for receiving the AC-input voltage of 90VAC to 265VAC.
24. power inverter as claimed in claim 1, wherein, described second circuit is suitable for receiving the DC input voitage of 11VDC to 16VDC.
25. power inverter as claimed in claim 1 also comprises the thermal limit device (NTC3) of working temperature of the described converter of restriction (10).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33578501P | 2001-10-31 | 2001-10-31 | |
| US60/335,785 | 2001-10-31 | ||
| US10/005,961 | 2001-12-03 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA028157648A Division CN1541439A (en) | 2001-10-31 | 2002-02-08 | dual input Ac and DC power supply having programmable DC output utilizing secondary buck converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101599697A true CN101599697A (en) | 2009-12-09 |
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ID=35160896
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910147489A Pending CN101640474A (en) | 2001-10-31 | 2002-02-08 | Dual input AC and DC power supply having programmable DC output utilizing secondary buck converter |
| CNA2008101710055A Pending CN101599697A (en) | 2001-10-31 | 2002-02-08 | Utilize secondary buck converter, have the dual input AC and the DC power supply of direct current output able to programme |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910147489A Pending CN101640474A (en) | 2001-10-31 | 2002-02-08 | Dual input AC and DC power supply having programmable DC output utilizing secondary buck converter |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN101640474A (en) |
| ZA (1) | ZA200400930B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI477031B (en) * | 2012-06-28 | 2015-03-11 | Fsp Technology Inc | Power supply device |
| CN107846134A (en) * | 2017-12-05 | 2018-03-27 | 湖北巴东博宇工贸有限公司 | High-effect single-chip microcomputer dual output electric car DC converters |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011147266A2 (en) * | 2011-05-16 | 2011-12-01 | 华为技术有限公司 | Subsidiary power source for bidirectional power supply |
| US9819192B2 (en) | 2014-07-29 | 2017-11-14 | General Electric Company | Solid oxide fuel cell-based power generation and delivery system and method of operating the same |
| CN108110885B (en) * | 2017-12-29 | 2020-07-31 | 惠州华阳通用电子有限公司 | Automatic power supply switching device |
-
2002
- 2002-02-08 CN CN200910147489A patent/CN101640474A/en active Pending
- 2002-02-08 CN CNA2008101710055A patent/CN101599697A/en active Pending
-
2004
- 2004-02-04 ZA ZA200400930A patent/ZA200400930B/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI477031B (en) * | 2012-06-28 | 2015-03-11 | Fsp Technology Inc | Power supply device |
| CN107846134A (en) * | 2017-12-05 | 2018-03-27 | 湖北巴东博宇工贸有限公司 | High-effect single-chip microcomputer dual output electric car DC converters |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101640474A (en) | 2010-02-03 |
| ZA200400930B (en) | 2005-05-04 |
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Open date: 20091209 |