CN102570796B - Multi-path output boosting converter - Google Patents
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Abstract
The invention discloses a multi-path output boosting converter, belonging to the field of an electronic circuit. The multi-path output boosting converter comprises a boosting converter and one or more boosting conversion branch circuits; the boosting converter comprises an energy storage inductor, a first switching on and off module, a first switch module, a first output filter capacitor and a control module, and each boosting conversion branch circuits comprises a second switch module and a second output filter capacitor. According to the multi-path output boosting converter disclosed by the invention, the cost of the multi-path output boosting converter can be reduced.
Description
Technical field
The present invention relates to electronic circuit field, particularly a kind of Multi-path output boosting converter.
Background technology
In electronic circuit field, booster converter is widely used in the application scenario of need to boosting, and for example booster converter is often applied to battery and boosts and PFC(Power Factor Correction, power factor correction) application scenario of boosting such as circuit.
Wherein, booster converter has an input and an output, so a booster converter can only be exported an output voltage; But need in a lot of occasions the multiple output voltages of output that booster converter can be separate; At present can be by multiple separate booster converter channeling output boosting converters, so Multi-path output boosting converter can be exported multiple separate output voltages.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
Each booster converter comprises multiple electronic devices and components, and Multi-path output boosting converter comprises multiple booster converters, and the electronic devices and components that so Multi-path output boosting converter comprises are more, make the cost of Multi-path output boosting converter higher.
Summary of the invention
In order to reduce the cost of Multi-path output boosting converter, the invention provides a kind of Multi-path output boosting converter.Described technical scheme is as follows:
A kind of Multi-path output boosting converter, comprising:
Booster converter, one or more boosting inverter branch road; Described booster converter comprises energy storage inductor, the first break-make module, the first switch module, the first output filter capacitor and control module; Described boosting inverter branch road comprises second switch module and the second output filter capacitor;
Described energy storage inductor respectively with the anode of described the first break-make module, the positive pole of the first switch module, the positive pole electrical connection of second switch module; The negative electrode of described the first break-make module is electrically connected with the positive pole of described the first output filter capacitor; The negative pole of the negative pole of described the first switch module and described the first output filter capacitor is all linked into earth point; Described control module is connected with second switch module with described the first switch module; The negative pole of described second switch module is electrically connected with the positive pole of described the second output filter capacitor, the negative pole access earth point of described the second output filter capacitor;
Within the first switch module service time of switch periods, described in described control module control, described second switch module shuts down is opened and controlled to the first switch module, described energy storage inductor receives the first voltage of power supply input, described the first voltage flows into earth point, described energy storage inductor store electrical energy through described energy storage inductor and the first switch module; Described the first output filter capacitor electric discharge output voltage are given the load being connected with described booster converter, and described the first break-make module stops the voltage of described the first output filter capacitor output to pour in down a chimney in described energy storage inductor simultaneously; And described the second output filter capacitor electric discharge output voltage are given the load being connected with described boosting inverter branch road;
Described second switch module corresponding time of delay, be that described the first switch module turn-offs the time that described second switch module is opened described time of delay;
Within the first switch module turn-off time of described switch periods, described in described control module control, the first switch module turn-offs and starts timing, described energy storage inductor receives the first voltage of power supply input, discharge simultaneously and export second voltage, described second voltage and the first voltage are superposeed and obtains tertiary voltage, by described the first break-make module, described tertiary voltage is exported to described the first output filter capacitor and the load being connected with described booster converter, simultaneously described the first output filter capacitor charging; And, in the time that timing time reaches time of delay corresponding to described second switch module, described in described control module control, second switch module is open-minded, described energy storage inductor is exported to described the second output filter capacitor and the load being connected with described boosting inverter branch road by described second switch module by described tertiary voltage, simultaneously described the second output filter capacitor charging.
In embodiments of the present invention, Multi-path output boosting converter comprises a booster converter, and one or more boosting inverter branch roads, an output voltage of booster converter output, an output voltage of each boosting inverter branch road output, so make multichannel output output boosting converter there is multichannel output, can export multiple output voltages; Wherein, the electronic devices and components that each boosting inverter branch road comprises are less than the electronic devices and components that booster converter comprises, thereby can reduce volume, circuit complexity and the cost of Multi-path output boosting converter; In addition, in the present embodiment, Multi-path output boosting converter only has an input, further reduces Multi-path output boosting converter volume, circuit complexity and cost.
Brief description of the drawings
Fig. 1 is the first multichannel boost converter configuration schematic diagram that the embodiment of the present invention provides;
Fig. 2 is the second multichannel boost converter configuration schematic diagram that the embodiment of the present invention provides;
Fig. 3 is the multichannel boost converter configuration schematic diagram with two-way output that the embodiment of the present invention provides;
Fig. 4 is the multichannel boost converter configuration schematic diagram with three tunnel outputs that the embodiment of the present invention provides;
Fig. 5 is the multichannel boost converter configuration schematic diagram with the output of n+1 road that the embodiment of the present invention provides.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Referring to Fig. 1, the embodiment of the present invention provides a kind of Multi-path output boosting converter, comprising:
Energy storage inductor 1a respectively with the anode of the first break-make module 1b, the positive pole electrical connection of the first switch module 1c, the positive pole electrical connection of second switch module 2a; The negative electrode of the first break-make module 1b is electrically connected with the positive pole of the first output filter capacitor 1d, the negative pole of the negative pole of the first switch module 1c and the first output filter capacitor 1d is all linked into earth point, and control module 1e is connected with second switch module 2a with the first switch module 1c; The negative pole of second switch module 2a is electrically connected with the positive pole of the second output filter capacitor 2b, the negative pole access earth point of the second output filter capacitor 2b;
The corresponding switch periods of the first switch module 1c, this switch periods comprises the first switch module service time and the first switch module turn-off time, second switch module 2a corresponding time of delay, be that the first switch module 1c turn-offs the time that second switch module 2a opens time of delay;
Within the first switch module service time of switch periods, control module 1e controls the first switch module 1c and opens and control second switch module 2a shutoff, energy storage inductor 1a receives the first voltage of power supply V input, the first voltage flows into earth point through energy storage inductor 1a and the first switch module 1c, and energy storage inductor store electrical energy; The first output filter capacitor 1d electric discharge output voltage are given the load R1 being connected with booster converter 1, and the first break-make module 1b stops the voltage of the first output filter capacitor 1d output to pour in down a chimney in energy storage inductor 1a simultaneously; And the second output filter capacitor 2b electric discharge output voltage are given the load R2 being connected with boosting inverter branch road 2.
Further, within the first switch module turn-off time of switch periods, control module 1e controls the first switch module 1c and turn-offs and start timing, energy storage inductor 1a receives the first voltage of power supply V input, discharge simultaneously and export second voltage, second voltage and the first voltage are superposeed and obtains tertiary voltage, by the first break-make module 1b, tertiary voltage is exported to the first output filter capacitor 1d and the load R1 being connected with booster converter 1, simultaneously the first output filter capacitor 1d charging; And, in the time that timing time reaches time of delay corresponding to second switch module 2a, it is open-minded that control module 1e controls second switch module 2a, energy storage inductor 1a exports to the second output filter capacitor 2b and the load R2 being connected with boosting inverter branch road 2 by second switch module 2a by tertiary voltage, simultaneously the second output filter capacitor 2b charging.Wherein, be less than the first switch module turn-off time of switch periods time of delay.
Wherein, referring to Fig. 1, the cathode output end of power supply V is electrically connected with energy storage inductor 1a, cathode output end access earth point; The cathodic electricity of the positive pole of the electrode input end of load R1 and the first output filter capacitor 1e and the first break-make module 1b links together, and negative input is linked into earth point; The negative electricity of the positive pole of the electrode input end of load R2 and the second output filter capacitor 2b and second switch module 2a links together, and negative input is linked into earth point.
Wherein, the voltage that the load R1 being connected with booster converter 1 receives is the output voltage of booster converter 1, the voltage that the load R2 being connected with boosting inverter branch road 2 receives is the output voltage of boosting inverter branch road 2, and the service time of the first switch module 1c in switch periods accounts for the size of the output voltage of the duty ratio decision booster converter 1 of whole switch periods length, and the service time of second switch module 2a in switch periods accounts for the size of the output voltage of the duty ratio decision boosting inverter branch road 2 of whole switch periods length, so in the present embodiment, can make the duty ratio of the first switch module 1c and the duty ratio of each second switch module 2a different, can make the multiple output voltages that vary in size of Multi-path output boosting converter output.
Wherein, within the first switch module service time of switch periods, control module 1e controls the first switch module 1c and opens and control second switch module 2a shutoff, power supply V, energy storage inductor 1a and earth point form loop, so the first voltage of power supply V input flows into earth point through energy storage inductor 1a; Within the first switch module turn-off time of switch periods, control module 1e controls the first switch module 1c and turn-offs, and the loop that power supply V, energy storage inductor 1a and earth point form is turned off.
Wherein, in the present embodiment, booster converter 1 can be exported output voltage, and each boosting inverter branch road 2 can be exported output voltage, makes Multi-path output boosting converter have multiple output; And the electronic devices and components that each boosting inverter branch road 2 comprises are less than the electronic devices and components that booster converter 1 comprises, thereby can reduce volume, circuit complexity and the cost of Multi-path output boosting converter; In addition, in the present embodiment, Multi-path output boosting converter only has an input, further reduces volume, circuit complexity and the cost of Multi-path output boosting converter.
Further, control module 1e is also connected with the positive pole of the first output filter capacitor 1d with the negative electrode of the first break-make module 1b;
Within the first switch module turn-off time, control module 1e also gathers the output voltage of booster converter 1, if the output voltage of booster converter 1 is less than predeterminated voltage, controls the first switch module 1c and opens and control second switch module 2a shutoff.
Wherein, within the first switch module turn-off time, the electric energy that the first output filter capacitor 1d charging stores the first output filter capacitor 1d is more, control like this first switch module 1c opens and controls second switch module 2a pass and has no progeny, the first output filter capacitor 1d output voltage, and this voltage is the output voltage of booster converter 1, and can make the output voltage of booster converter 1 be more than or equal to predeterminated voltage.
Further, control module 1e is also connected with the positive pole of the second output filter capacitor 2b with the negative pole of second switch module 2a;
Within the first switch module turn-off time and when second switch module 2a opens, control module 1e also gathers the output voltage of boosting inverter branch road 2, if the output voltage of boosting inverter branch road 2 is less than predeterminated voltage, controls second switch module 2a and turn-offs.
Wherein, within the first switch module turn-off time and when second switch module 2a opens, the electric energy that the second output filter capacitor 2b charging stores the second output filter capacitor 2b is more, so controlling second switch module 2a pass has no progeny, the second output filter capacitor 2b output voltage, and this voltage is the output voltage of boosting inverter branch road 2, and can make the output voltage of boosting inverter branch road 2 be more than or equal to predeterminated voltage.
Wherein, predeterminated voltage is the minimum threshold of Multi-path output boosting converter output.
Further, referring to Fig. 2, booster converter branch road 2 also comprises the second break-make module 2c, and the anode of the second break-make module 2c is electrically connected with energy storage inductor 1a, and negative electrode is electrically connected with the positive pole of second switch module 2a;
In the time that the second switch module 2a in boosting inverter branch road 2 opens, energy storage inductor 1a gives the second output filter capacitor 2b and the load R2 being connected with boosting inverter branch road 2 by the second break-make module 2c with second switch module 2a output tertiary voltage.
Wherein, in this enforcement, energy storage inductor 1a can be an inductance, or for by multiple inductance in parallels or the inductive circuit that is in series; The first break-make module 1b can be a diode, or be by multiple diodes in parallels or the diode circuit that is in series, or be Mosfet(Metal-Oxide-Semiconductor Field-Effect Transistor, metal-oxide half field effect transistor), or be Mosfet circuit in parallel by multiple Mosfet or that be in series, or be IGBT(Insulated Gate Bipolar Transistor, insulated gate bipolar transistor), or for by multiple IGBT parallel connections or series connection IGBT circuit; The second break-make module 2c can be a diode, or be by multiple diodes in parallels or the diode circuit that is in series, or be Mosfet, or be Mosfet circuit in parallel by multiple Mosfet or that be in series, or be IGBT, or for by multiple IGBT parallel connections or series connection IGBT circuit; The first switch module 1c can be Mosfet, or be the Mosfet circuit of and/or series connection in parallel by multiple Mosfet, or be IGBT, or be the IGBT circuit of and/or series connection in parallel by multiple IGBT, or be switching device, or be the switching circuit of and/or series connection in parallel by multiple switching devices; Second switch module 23 can be Mosfet, or be the Mosfet circuit of and/or series connection in parallel by multiple Mosfet, or be IGBT, or be the IGBT circuit of and/or series connection in parallel by multiple IGBT, or be switching device, or be the switching circuit of and/or series connection in parallel by multiple switching devices; Control module 1e can be digital signal processing chip or analog integrated circuit, digital signal processing chip can be MCU(Micro Control Unit, micro-control unit), DSP(Digital Signal Processing, Digital Signal Processing) or CPLD(Complex Programmable Logic Device, CPLD).
Wherein, in the present embodiment, change the number that Multi-path output boosting converter comprises boosting inverter branch road 2, can obtain multiple Multi-path output boosting converter; For example, referring to Fig. 3, make multichannel booster converter comprise a boosting inverter branch road 2, obtain having the Multi-path output boosting converter of two-way output;
Referring to Fig. 4, make multichannel booster converter comprise two boosting inverter branch roads 2, be respectively boosting inverter branch road 21 and boosting inverter branch road 22, obtain having the Multi-path output boosting converter of three tunnel outputs, and, referring to 5, make multichannel booster converter there is n boosting inverter branch road 2, be respectively boosting inverter branch road 21, boosting inverter branch road 22 ... boosting inverter branch road 2n, obtains having the Multi-path output boosting converter that export on n+1 road.
In embodiments of the present invention, Multi-path output boosting converter comprises a booster converter, and one or more boosting inverter branch roads, an output voltage of booster converter output, an output voltage of each boosting inverter branch road output, so makes multichannel output output boosting converter have multichannel output; Wherein, the electronic devices and components that each boosting inverter branch road comprises are less than the electronic devices and components that booster converter comprises, thereby can reduce Multi-path output boosting converter volume, circuit complexity and cost; In addition, in the present embodiment, Multi-path output boosting converter only has an input, further reduces Multi-path output boosting converter volume, circuit complexity and cost.
One of ordinary skill in the art will appreciate that all or part of step that realizes above-described embodiment can complete by hardware, also can carry out the hardware that instruction is relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. a Multi-path output boosting converter, is characterized in that, comprising:
Booster converter, one or more boosting inverter branch road; Described booster converter comprises energy storage inductor, the first break-make module, the first switch module, the first output filter capacitor and control module; Described boosting inverter branch road comprises second switch module and the second output filter capacitor;
Described energy storage inductor respectively with the anode of described the first break-make module, the positive pole of the first switch module, the positive pole electrical connection of second switch module; The negative electrode of described the first break-make module is electrically connected with the positive pole of described the first output filter capacitor; The negative pole of the negative pole of described the first switch module and described the first output filter capacitor is all linked into earth point; Described control module is connected with second switch module with described the first switch module; The negative pole of described second switch module is electrically connected with the positive pole of described the second output filter capacitor, the negative pole access earth point of described the second output filter capacitor;
Within the first switch module service time of switch periods, described in described control module control, described second switch module shuts down is opened and controlled to the first switch module, described energy storage inductor receives the first voltage of power supply input, described the first voltage flows into earth point, described energy storage inductor store electrical energy through described energy storage inductor and the first switch module; Described the first output filter capacitor electric discharge output voltage are given the load being connected with described booster converter, and described the first break-make module stops the voltage of described the first output filter capacitor output to pour in down a chimney in described energy storage inductor simultaneously; And described the second output filter capacitor electric discharge output voltage are given the load being connected with described boosting inverter branch road;
Described second switch module corresponding time of delay, be that described the first switch module turn-offs the time that described second switch module is opened described time of delay;
Within the first switch module turn-off time of described switch periods, described in described control module control, the first switch module turn-offs and starts timing, described energy storage inductor receives the first voltage of power supply input, discharge simultaneously and export second voltage, described second voltage and the first voltage are superposeed and obtains tertiary voltage, by described the first break-make module, described tertiary voltage is exported to described the first output filter capacitor and the load being connected with described booster converter, simultaneously described the first output filter capacitor charging; And, in the time that timing time reaches time of delay corresponding to described second switch module, described in described control module control, second switch module is open-minded, described energy storage inductor is exported to described the second output filter capacitor and the load being connected with described boosting inverter branch road by described second switch module by described tertiary voltage, simultaneously described the second output filter capacitor charging.
2. Multi-path output boosting converter as claimed in claim 1, is characterized in that,
Described control module is also joined with the negative electrode of described the first break-make module and the positive pole of the first output filter capacitor;
Within the first switch module turn-off time of described switch periods, described control module also gathers described booster converter and exports to the voltage of load, if the voltage of described booster converter output is less than predeterminated voltage, described in described control module control, described second switch module shuts down is opened and controlled to the first switch module, and described predeterminated voltage is the minimum threshold of described Multi-path output boosting converter output.
3. Multi-path output boosting converter as claimed in claim 1, is characterized in that,
Described control module is also connected with the positive pole of the second output filter capacitor with the negative pole of described second switch module;
Within described the first switch module turn-off time and when second switch module opens, described control module also gathers described boosting inverter branch road and exports to the voltage of load, if the voltage of described boosting inverter branch road output is less than predeterminated voltage, control described second switch module shuts down, described predeterminated voltage is the minimum threshold of described Multi-path output boosting converter output.
4. Multi-path output boosting converter as claimed in claim 1, is characterized in that, described boosting inverter branch road also comprises:
The second break-make module, the anode of described the second break-make module is electrically connected with described energy storage inductor, and negative electrode is electrically connected with the positive pole of described second switch module;
In the time that the second switch module in described boosting inverter branch road is opened, described energy storage inductor is given described the second output filter capacitor and the load being connected with described boosting inverter branch road by described the second break-make module with second switch module output tertiary voltage.
5. the Multi-path output boosting converter as described in claim 1-4 any one claim, is characterized in that,
Described energy storage inductor is an inductance, or for by multiple inductance in parallels or the inductive circuit that is in series.
6. the Multi-path output boosting converter as described in claim 1-4 any one claim, is characterized in that,
Described the first break-make module is a diode, or be by multiple diodes in parallels or the diode circuit that is in series, or be a metal oxide semiconductcor field effect transistor Mosfet, or be Mosfet circuit in parallel by multiple Mosfet or that be in series, or be an insulated gate bipolar transistor IGBT, or be IGBT circuit in parallel by multiple IGBT or that be in series.
7. the Multi-path output boosting converter as described in claim 1-4 any one claim, is characterized in that,
Described the first switch module is a switching device, or is the switching circuit of and/or series connection in parallel by multiple switching devices.
8. the Multi-path output boosting converter as described in claim 1-4 any one claim, is characterized in that,
Described the first switch module is a Mosfet, or is the Mosfet circuit of and/or series connection in parallel by multiple Mosfet, or is an IGBT, or is the IGBT circuit of and/or series connection in parallel by multiple IGBT.
9. Multi-path output boosting converter as claimed in claim 4, is characterized in that,
Described the second break-make module is a diode, or be by multiple diodes in parallels or the diode circuit that is in series, or be a Mosfet, or be Mosfet circuit in parallel by multiple Mosfet or that be in series, or be an IGBT, or be IGBT circuit in parallel by multiple IGBT or that be in series.
10. the Multi-path output boosting converter as described in claim 1-4 any one claim, is characterized in that,
Described control module is digital signal processing chip or analog integrated circuit.
11. Multi-path output boosting converters as described in claim 4 claim, is characterized in that,
Described second switch module is a switching device, or is the switching circuit of and/or series connection in parallel by multiple switching devices.
12. Multi-path output boosting converters as described in claim 4 claim, is characterized in that,
Described second switch module is a Mosfet, or is the Mosfet circuit of and/or series connection in parallel by multiple Mosfet, or is an IGBT, or is the IGBT circuit of and/or series connection in parallel by multiple IGBT.
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| CN1805258A (en) * | 2005-11-21 | 2006-07-19 | 株洲时代广创变流技术有限公司 | Voltage boost circuit |
| CN101232240A (en) * | 2008-02-28 | 2008-07-30 | 北京创毅视讯科技有限公司 | Boosted circuit |
| CN101860210A (en) * | 2010-05-12 | 2010-10-13 | 天津大学 | Novel boost chopper cascade structure |
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| US6075295A (en) * | 1997-04-14 | 2000-06-13 | Micro Linear Corporation | Single inductor multiple output boost regulator |
| CN1805258A (en) * | 2005-11-21 | 2006-07-19 | 株洲时代广创变流技术有限公司 | Voltage boost circuit |
| CN101232240A (en) * | 2008-02-28 | 2008-07-30 | 北京创毅视讯科技有限公司 | Boosted circuit |
| CN101860210A (en) * | 2010-05-12 | 2010-10-13 | 天津大学 | Novel boost chopper cascade structure |
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