CN101552549A - Control method and control device of buck single-inductor dual-output branch switch converter - Google Patents
Control method and control device of buck single-inductor dual-output branch switch converter Download PDFInfo
- Publication number
- CN101552549A CN101552549A CNA2009100952390A CN200910095239A CN101552549A CN 101552549 A CN101552549 A CN 101552549A CN A2009100952390 A CNA2009100952390 A CN A2009100952390A CN 200910095239 A CN200910095239 A CN 200910095239A CN 101552549 A CN101552549 A CN 101552549A
- Authority
- CN
- China
- Prior art keywords
- output
- signal
- branch road
- output branch
- inductance
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 108010076504 Protein Sorting Signals Proteins 0.000 claims abstract description 4
- 230000005669 field effect Effects 0.000 claims description 28
- 238000001514 detection method Methods 0.000 claims description 15
- 230000001939 inductive effect Effects 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims 1
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 230000009977 dual effect Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Images
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The present invention discloses control method and control device of buck single-inductor dual-output switch converter. The invention provided control method can real-time regulate power ratio of a first output branch and a second output branch effectively to make output power distribution of the dual-output branch more reasonable, by regulating and controlling high level clock cycle number and low level clock cycle number in strobe signal sequence. The invention provided buck single-inductor dual-output branch switch converter implements output power dynamic distribution of the first output branch and the second output branch, and under the premise of priority satisfy load power supply, charging the battery is also assured, and total of two parts of power is controlled is a stable range, comparing with the prior art, even if power rating inputted is small can also ensure normal operation of the first output branch load.
Description
Technical field
The present invention relates to a kind of control method and control device of buck single-inductor dual output switch converters.
Background technology
Single inductance dual output switch converters has benefited from using less power element and less wiring board area occupied, is widely used in the portable electric appts.Must be equipped with accumulator in the portable decision device, be generally chargeable lithium battery; And applied environment determines when being battery charge, and equipment is also necessary can operate as normal.As in portable player, switch converters needs to produce a 4.2V direct voltage by input direct voltage and is used for charging the battery, and produces a 3.3V direct voltage simultaneously to decoding chip and other circuit.
Generally, if input power without limits, the component parameters of circuit is as inductance, power tube, switching frequency etc., can design according to the required maximum power of power circuit, therefore common single inductance dual output control strategy is enough to achieve the goal as alternately controlling.
Paper " Single-Inductor Dual-Input Dual-Output SwitchingConverter for Integrated Battery Charging and Power Regulation " discloses a kind of controller (source: Circuits and Systems of single inductance dual output, 2003.ISCAS ' 03.Proceedings of the 2003 International Symposium on, publish day: 25-28 day in May, 2003, III-447-III-450 vol.3), connect load at this controller one output branch road, when another output branch road connects rechargeable battery, it is metastable that controller provides the time of output to the two-way branch road, generally be to provide output to every road output branch road successively, respectively account for half on the time.Because the output time that provides to every road branch road is stable, in charging process, the energy that offers the battery branch road can reduce with the rising of cell voltage, and the energy consumption of load changes at any time, therefore sort controller must be considered extreme case, promptly transports to all maximum situation of energy of load and battery.With the foundation of all maximum situation of the energy of transporting to load and battery as the design transformation device, such shortcoming is when cell voltage rises, the energy of transporting to battery reduces, the time that converter still keeps half charges the battery, and no current in the actual this moment inductance, the most of the time is wasted.
Along with the lifting of photovoltaic conversion efficiency, increasing portable set begins to select solar cell as power supply unit.If still design according to the required maximum power of circuit, the solar cell board size that meets the requirements may exceed basic portable requirement; And the variation of intensity of illumination, also can increase the uncertainty of design.
Summary of the invention
The invention provides a kind of control method of buck single-inductor dual output switch converters, rationally adjust the power output ratio of two output branch roads according to loading condition by the control gating signal.
The present invention also provides a kind of buck single-inductor dual output switch converters of realizing said method, realizes adjusting the power output ratio of two output branch roads by negative-feedback circuit and finite state machine.
The control method of buck single-inductor dual-output branch switch converter of the present invention is:
Send the control gating signal to two output branch roads, described control gating signal comprises a plurality of sequences, and each sequence is made up of high level and the low level of 1 above clock cycle of 1 above clock cycle;
Sample the respectively output voltage of two output branch roads and relatively produce first negative-feedback signal and second negative-feedback signal with reference voltage is selected first negative-feedback signal or second negative-feedback signal to compare with the triangle wave voltage signal and is produced the drive signal that is used to adjust inductance input power;
Detect the electric current of inductance simultaneously, when inductive current is not making zero or in week in the end of term when the time that electric current is arranged in the inductance is shorter than 0.7 times of cycle, adjust the clock periodicity and the low level clock periodicity of high level in the sequence, change the power output ratio of two output branch roads.
High level in the above-mentioned control gating signal selects first negative-feedback signal or second negative-feedback signal to compare with the triangle wave voltage signal, and another negative-feedback signal of low level corresponding selection is compared with the triangle wave voltage signal.
High level in the above-mentioned control gating signal is controlled the conducting of the first output branch road and ending of the second output branch road, and the conducting of the ending of branch road and the second output branch road is exported in low level control first.
When inductive current did not make zero in clock cycle end, each sequence increases by the high level of 1 clock cycle or reduces the low level of 1 clock cycle in the control gating signal; Have time of electric current to be shorter than 0.7 times of cycle in inductance, each sequence reduces the high level of 1 clock cycle or increases by the low level of 1 clock cycle in the control gating signal.
For the ease of control,, the low level clock periodicity M that controls each sequence in the gating signal is stabilized to 1 as preferred embodiment.When inductive current did not make zero in clock cycle end, control the high level of each sequence 1 clock cycle of increase in the gating signal; Have time of electric current to be shorter than 0.7 times of cycle in inductance, each sequence reduces the high level of 1 clock cycle in the control gating signal, and the clock periodicity of high level is 1 in each sequence.
Because sequence signal may cause the instability that converter is temporary transient after changing once, thereby makes detection signal inaccurate, stablize several cycles so can after the control gating signal changes, keep.
Excessive for the peak current that prevents the second output branch road, second peak current of exporting branch road is carried out the electric current restriction.
Excessive for the peak current that prevents the second output branch road, in the time of can being chosen in the control gating signal conducting second output branch road, the peak current of inductance is limited.
A kind of switch converters of realizing above-mentioned control method, comprise the first field effect transistor switch pipe and the inductance that is connected the first field effect transistor switch pipe, connect this inductance output end the first output branch road of forming by the second field effect transistor switch pipe, connect inductance output end second export branch road by what the 3rd field effect transistor switch pipe was formed; The first output branch road and the second output branch road are provided with feedback circuit, and feedback circuit is sampled to the output voltage of the first output branch road and the second output branch road respectively;
Comprise that also a current detection module connects inductance one end, the detection signal and the clock signal of finite state machine received current detection module, output control gating signal;
The grid of the second field effect transistor switch pipe and the 3rd field effect transistor switch pipe receives the control gating signal of the power output ratio that is used to adjust the first output branch road and second branch road by anti-crossover driver;
Be provided with the gate of selecting the output first output branch road negative-feedback signal or the second output branch road negative-feedback signal according to the control gating signal in the feedback circuit;
One comparator receives the negative-feedback signal and the triangle wave voltage signal of gate, and output drive signal;
The grid of the first field effect transistor switch pipe receives drive signal by driver, adjusts the power output of the first field effect transistor switch pipe.
For peak current is limited, be connected with the peak current limit module that is used to export the branch road current limliting at voltage input end, described driver receives the signal of peak current limit module and the control gating signal of finite state machine.
Advantage of the present invention is:
Control method of the present invention is by adjusting high level clock periodicity and the low level clock periodicity in the control gating signal sequence, can efficiently adjust the power ratio of the first output branch road and the second output branch road in real time, make the power output distribution of two output branch roads more reasonable.
Buck single-inductor dual output switch converters of the present invention is to the power output dynamic assignment of the first output branch road and the second output branch road, make under the prerequisite that preferentially satisfies electric, still can guarantee battery charge, and the summation of this two-part power can be controlled in the more stable scope, compared to existing technology, even input rated power is less, also can satisfy the operate as normal of the first output branch road load.
Description of drawings
Fig. 1 is the view of finite state machine of the present invention;
Fig. 2 is the circuit diagram of control device of the present invention;
Fig. 3 is the circuit diagram of anti-crossover driver of the present invention;
Fig. 4 is the circuit diagram of driver of the present invention;
Fig. 5 a is the current diagram of the first output branch road;
Fig. 5 b is the current diagram of input branch road inductance;
Fig. 5 c is a control gating signal schematic diagram.
Embodiment
Single inductance dual output switch converters of present embodiment is applied to the power circuit in the portable equipment, comprise the first field effect transistor switch pipe 1 and the inductance 2 that is connected the first field effect transistor switch pipe 1, connect these inductance 2 outputs the first output branch road of forming by the second field effect transistor switch pipe 3, connect this inductance output end second export branch road by what the 3rd field effect transistor switch pipe 4 was formed, wherein the second output branch road is a charging circuit, and output connects rechargeable battery.The first output branch road and the second output branch road are provided with feedback circuit, feedback circuit is sampled to the output voltage of the first output branch road and the second output branch road respectively, and sampled voltage and reference voltage 8 are produced first negative-feedback signal and second negative-feedback signal more respectively.At the input of switch converters and the output cross-over connection of the second output branch road rechargeable battery powered branch road is arranged.After outside input power supply was removed, detection of power loss module automatic switchover rechargeable battery continued as the first output branch road power supply as the input power supply, closes the second output branch road simultaneously.
The control method of present embodiment is:
When initial, send the control gating signal to two output branch roads, described control gating signal comprises a plurality of sequences, and each sequence is made up of high level and the low level of 1 clock cycle of 1 clock cycle.High level in the control gating signal is controlled the conducting of the first output branch road and ending of the second output branch road, and low level is controlled the conducting of the ending of the first output branch road and the second output branch road.
Sample the respectively output voltage of two output branch roads and relatively produce first negative-feedback signal and second negative-feedback signal with reference voltage.High level by the control gating signal selects first negative-feedback signal to compare with the triangle wave voltage signal, and low level corresponding selection second negative-feedback signal is compared with the triangle wave voltage signal.Relatively the back produces drive signal, adjusts the power of inductance input.
Detect the electric current of inductance simultaneously,, control the high level of each sequence 1 clock cycle of increase in the gating signal when inductive current did not make zero in clock cycle end; Have time of electric current to be shorter than 0.7 times of cycle in inductance, each sequence reduces the high level of 1 clock cycle in the control gating signal, and the clock periodicity of high level is 1 in each sequence.
Because sequence signal may cause the instability that converter is temporary transient after changing once, thereby makes detection signal inaccurate,, the detection signal that foundation is new again behind the system stability is changed so after sequence signal changes once, just wait for several cycles.Usually change the back at sequence signal and wait for 16 cycles.
Produce each state of the finite state machine of control gating signal as shown in Figure 1.The detection signal and the clock signal of finite state machine receiving inductance current detection module, output control gating signal.Finite state machine has one of four states:
State 1: output control gating signal, control gating signal comprise the high level of one or more clock cycle and the sequence that the low level of 1 clock cycle is formed;
State 2: each sequence increases by the high level of 1 clock cycle in the control gating signal;
State 3: each sequence reduces the high level of 1 clock cycle in the control gating signal;
State 4: shielding " UP " signal and 16 clock cycle of " DOWN " signal, waiting system is stable.
When the control gating signal does not satisfy the change condition, the control gating signal of circulation output state 1.After limited state machine receives reset signal, the high level in each sequence can be adjusted into 1 clock periodicity.
When inductive current did not make zero in clock cycle end, finite state machine receives " UP " signal, gets the hang of 2 from state 1, and each sequence increases by the high level of 1 clock cycle in the control gating signal.Get the hang of 4 then, after the control gating signal is stablized 16 clock cycle, get the hang of 1.
When the time that electric current is arranged in the inductance is shorter than 0.7 times of cycle, finite state machine receives " DOWN " signal, more than 1, get the hang of 3 from state 1 as the clock periodicity of high level in the infructescence, each sequence reduces the high level of 1 clock cycle in the control gating signal.Get the hang of 4 then, the control gating signal is stablized 16 all after dates, gets the hang of 1.
The load of the second output branch road is generally lithium ion battery.By the battery behavior decision, under the different situation of store electrical energy, its both end voltage can change between 2.7-4.2V.If directly use constant voltage charge, when cell voltage was low, charging current can be excessive, gently then damages battery, heavy then initiation potential; So during at the second output branch road output, inductive current is done peak-limitation.Like this when cell voltage is low, converter produces the charging current of an approximately constant (concrete size according to peak limit value and sequence signal different and decide) at the second output branch road, avoids large current charge.
The control device of present embodiment comprises above-mentioned single inductance dual output switch converters as shown in Figure 2.Current detection module is connected inductance 2 one ends, detects inductive current, and detection signal is sent to finite state machine.Do not get back to zero current condition at all end of term inductive currents, this current detection module output " UP " signal, the expression converter has broken away from discontinuous current pattern (DCM), enters continuous current mode (CCM); If this module detects the time that electric current is arranged in the inductance and is shorter than 0.7 times of cycle, output " DOWN " signal shows that load has become lighter.
The grid of the second field effect transistor switch pipe 3 and the 3rd field effect transistor switch pipe 4 receives the control gating signal of the power output ratio that is used to adjust the first output branch road and second branch road by anti-crossover driver.The electrical block diagram of anti-crossover driver as shown in Figure 3 is after the input of control gating signal, through the NAND gate 15 and the grid output of door 16 backs to the second field effect transistor switch pipe 3 and the 3rd field effect transistor switch pipe 4 of delaying time.
Be provided with the gate 5 that is used to select to export the first output branch road negative-feedback signal or the second output branch road negative-feedback signal in the feedback circuit, this gate 5 receives the control gating signal and selects the corresponding negative-feedback signal of output.Negative-feedback signal and triangle wave voltage signal that comparator 6 receives through gate 5 outputs, and output drive signal.The grid of the first field effect transistor switch pipe 1 is adjusted the first field effect transistor switch pipe, 1 power output by the drive signal of driver reception comparator.
Connect the peak current limit module that is used for the second output branch road current limliting at voltage input end 7, above-mentioned driver receives the signal of peak current limit module and the control gating signal of finite state machine, when the 3rd field effect transistor switch pipe conducting second output branch road, the electric current of inductance 2 is carried out peak-limitation.
Driver circuit structure schematic diagram as shown in Figure 4, two inputs of driver 14 receive the signal of peak current limit module and the control gating signal 10 of finite state machine with door 9.The control gating signal 10 of finite state machine also can shield the signal of peak current limit module when the conducting first output branch road.Two inputs or door receive two inputs and the output signal of door 9 and the drive signal of comparator 6, and two inputs or door 11 send signals to RS latch 12.RS latch 12 connects the grid of the first field effect transistor switch pipe 1 by three buffers 13.
Shown in Figure 5 is load rising step response schematic diagram.Wherein, Fig. 5 a is the first output branch current schematic diagram; Fig. 5 b is the inductive current schematic diagram; Fig. 5 c is control gating signal schematic diagram.
Before time shaft 1.1ms, circuit working is alternately exported electric energy in underload from the sequence signal control first output branch road and the second output branch road.
At the 1.1ms place, the electric current of the first output branch road is elevated to 180mA from 30mA, because this moment, interrupted inductive current was not enough to offer the enough electric energy of load A, controlled by loop, and inductive current will enter continuous mode so that more electric energy to be provided; And this can cause the intermodulation between the two output voltage.For avoiding this situation, the high level number increases in the control gating signal sequence.
After the control gating signal changed at every turn, finite state machine was by shielding " UP " or " DOWN " signal in 16 cycles, and the wait converter is stable.Avoid sequence control gating signal to change once more too early, cause the entire system instability.
Claims (10)
1, a kind of control method of buck single-inductor dual-output branch switch converter, the output by two output branch roads of control gating signal control is characterized in that:
Described control gating signal comprises a plurality of sequences, and each sequence is made up of high level and the low level of 1 above clock cycle of 1 above clock cycle;
Sample the respectively output voltage of two output branch roads and relatively produce first negative-feedback signal and second negative-feedback signal with reference voltage is selected first negative-feedback signal or second negative-feedback signal to compare with the triangle wave voltage signal and is produced the drive signal that is used to adjust inductance input power;
Detect the electric current of inductance in the input branch road simultaneously, when inductive current is not making zero or in week in the end of term when the time that electric current is arranged in the inductance is shorter than 0.7 times of cycle, adjust the clock periodicity and the low level clock periodicity of high level in the control gating signal sequence, change the power output ratio of two output branch roads.
2, control method according to claim 1, it is characterized in that: the high level in the control gating signal selects first negative-feedback signal or second negative-feedback signal to compare with the triangle wave voltage signal, and another negative-feedback signal of low level corresponding selection is compared with the triangle wave voltage signal.
3, control method according to claim 2, it is characterized in that: high level is controlled the conducting of the first output branch road and ending of the second output branch road in the described control gating signal, and the conducting of the ending of branch road and the second output branch road is exported in low level control first.
4, control method according to claim 1 is characterized in that: when inductive current did not make zero in clock cycle end, each sequence increases by the high level of 1 clock cycle or reduces the low level of 1 clock cycle in the control gating signal; Have time of electric current to be shorter than 0.7 times of cycle in inductance, each sequence reduces the high level of 1 clock cycle or increases by the low level of 1 clock cycle in the control gating signal.
5, control method according to claim 4 is characterized in that: the low level clock periodicity of each sequence stabilizes to 1 in the described control gating signal.
6, according to the arbitrary described control method of claim 1-5, it is characterized in that: keep after described control gating signal changes and stablize constant several clock cycle.
7, control method according to claim 6 is characterized in that: the peak current to the second output branch road carries out the electric current restriction.
8, control method according to claim 6 is characterized in that: when the control gating signal conducting second output branch road, the peak current of inductance is limited.
9, a kind of switch converters of realizing the described control method of claim 1, comprise the first field effect transistor switch pipe and the inductance that is connected the first field effect transistor switch pipe, connect this inductance output end the first output branch road of forming by the second field effect transistor switch pipe, connect inductance output end second export branch road by what the 3rd field effect transistor switch pipe was formed; The first output branch road and the second output branch road are provided with feedback circuit, and feedback circuit to the output voltage sampling of the first output branch road and the second output branch road, is characterized in that respectively:
One current detection module connects inductance one end, the detection signal and the clock signal of finite state machine received current detection module, output control gating signal;
The grid of the second field effect transistor switch pipe and the 3rd field effect transistor switch pipe receives the control gating signal of the power output ratio that is used to adjust the first output branch road and second branch road by anti-crossover driver;
Be provided with the gate of selecting the output first output branch road negative-feedback signal or the second output branch road negative-feedback signal according to the control gating signal in the feedback circuit;
One comparator receives the negative-feedback signal and the triangle wave voltage signal of gate, and output drive signal;
The grid of the first field effect transistor switch pipe receives drive signal by driver, adjusts the power output of the first field effect transistor switch pipe.
10, control device according to claim 9, it is characterized in that: be connected with the peak current limit module that is used to export the branch road current limliting at voltage input end, described driver receives the signal of peak current limit module and the control gating signal of finite state machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100952390A CN101552549B (en) | 2009-01-05 | 2009-01-05 | Control method and control device of buck single-inductor dual-output branch switch converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100952390A CN101552549B (en) | 2009-01-05 | 2009-01-05 | Control method and control device of buck single-inductor dual-output branch switch converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101552549A true CN101552549A (en) | 2009-10-07 |
| CN101552549B CN101552549B (en) | 2012-01-04 |
Family
ID=41156581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100952390A Expired - Fee Related CN101552549B (en) | 2009-01-05 | 2009-01-05 | Control method and control device of buck single-inductor dual-output branch switch converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101552549B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710127A (en) * | 2011-01-11 | 2012-10-03 | 瑞昱半导体股份有限公司 | Single-inductance double-output power converter and driving method thereof |
| CN103023310A (en) * | 2011-09-22 | 2013-04-03 | 精工爱普生株式会社 | Switching device and method of controlling switching device |
| CN103125067A (en) * | 2010-09-10 | 2013-05-29 | 意法爱立信有限公司 | Symmetrical output switch-mode power supply |
| US8884593B2 (en) | 2011-07-07 | 2014-11-11 | Sitronix Technology Corp. | Voltage converter for providing a positive and a negative voltage |
| CN104660033A (en) * | 2015-02-10 | 2015-05-27 | 西南交通大学 | Frequency conversion control method and device for single-inductor dual-output switch converter in continuous conduction mode |
| CN106374745A (en) * | 2016-09-21 | 2017-02-01 | 西安电子科技大学 | Single-inductor dual-path output DC-DC boosting converter based on voltage intermodulation suppression |
| CN108988626A (en) * | 2018-07-11 | 2018-12-11 | 南京理工大学 | A kind of single-inductor dual-output converter and its working method merging PFC |
| CN109660124A (en) * | 2019-01-21 | 2019-04-19 | 华南理工大学 | A kind of single-inductance double-output lifting/voltage reducing DC-DC converter of hysteresis current control |
| CN110419009A (en) * | 2017-04-28 | 2019-11-05 | 株式会社日立制作所 | Controller and control method |
| CN111106758A (en) * | 2018-10-26 | 2020-05-05 | 立锜科技股份有限公司 | Power supply device, master power supply circuit, slave power supply circuit and control method thereof |
| TWI765419B (en) * | 2020-11-19 | 2022-05-21 | 國立中山大學 | Single inductor dual output buck converter |
| CN115633394A (en) * | 2022-02-23 | 2023-01-20 | 荣耀终端有限公司 | Power control method and related equipment |
| CN117811368A (en) * | 2023-12-29 | 2024-04-02 | 无锡中感微电子股份有限公司 | Single-inductor multi-output DC-DC converter |
-
2009
- 2009-01-05 CN CN2009100952390A patent/CN101552549B/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103125067A (en) * | 2010-09-10 | 2013-05-29 | 意法爱立信有限公司 | Symmetrical output switch-mode power supply |
| CN103125067B (en) * | 2010-09-10 | 2015-06-03 | 意法爱立信有限公司 | Optimized switch-mode power supply |
| CN102710127B (en) * | 2011-01-11 | 2015-05-20 | 瑞昱半导体股份有限公司 | Single-inductance double-output power converter and driving method thereof |
| CN102710127A (en) * | 2011-01-11 | 2012-10-03 | 瑞昱半导体股份有限公司 | Single-inductance double-output power converter and driving method thereof |
| US8884593B2 (en) | 2011-07-07 | 2014-11-11 | Sitronix Technology Corp. | Voltage converter for providing a positive and a negative voltage |
| TWI514738B (en) * | 2011-07-07 | 2015-12-21 | Sitronix Technology Corp | Voltage converter |
| CN103023310A (en) * | 2011-09-22 | 2013-04-03 | 精工爱普生株式会社 | Switching device and method of controlling switching device |
| CN104660033A (en) * | 2015-02-10 | 2015-05-27 | 西南交通大学 | Frequency conversion control method and device for single-inductor dual-output switch converter in continuous conduction mode |
| CN104660033B (en) * | 2015-02-10 | 2017-03-01 | 西南交通大学 | Continuous conduction mode single-inductance double-output switch converters method for controlling frequency conversion and its device |
| CN106374745A (en) * | 2016-09-21 | 2017-02-01 | 西安电子科技大学 | Single-inductor dual-path output DC-DC boosting converter based on voltage intermodulation suppression |
| CN106374745B (en) * | 2016-09-21 | 2019-05-17 | 西安电子科技大学 | The single inductance doubleway output DC-DC boost converter inhibited based on voltage intermodulation |
| CN110419009A (en) * | 2017-04-28 | 2019-11-05 | 株式会社日立制作所 | Controller and control method |
| CN110419009B (en) * | 2017-04-28 | 2022-04-22 | 株式会社日立制作所 | Controller and control method |
| CN108988626A (en) * | 2018-07-11 | 2018-12-11 | 南京理工大学 | A kind of single-inductor dual-output converter and its working method merging PFC |
| CN111106758A (en) * | 2018-10-26 | 2020-05-05 | 立锜科技股份有限公司 | Power supply device, master power supply circuit, slave power supply circuit and control method thereof |
| CN111106758B (en) * | 2018-10-26 | 2021-03-30 | 立锜科技股份有限公司 | Power supply device, master power supply circuit, slave power supply circuit and control method thereof |
| CN109660124A (en) * | 2019-01-21 | 2019-04-19 | 华南理工大学 | A kind of single-inductance double-output lifting/voltage reducing DC-DC converter of hysteresis current control |
| TWI765419B (en) * | 2020-11-19 | 2022-05-21 | 國立中山大學 | Single inductor dual output buck converter |
| CN115633394A (en) * | 2022-02-23 | 2023-01-20 | 荣耀终端有限公司 | Power control method and related equipment |
| CN115633394B (en) * | 2022-02-23 | 2023-09-05 | 荣耀终端有限公司 | Power control method and related equipment |
| CN117811368A (en) * | 2023-12-29 | 2024-04-02 | 无锡中感微电子股份有限公司 | Single-inductor multi-output DC-DC converter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101552549B (en) | 2012-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101552549B (en) | Control method and control device of buck single-inductor dual-output branch switch converter | |
| CN101499717B (en) | Controlling method and apparatus for four switch step-up step-down DC-DC converter | |
| US7227277B2 (en) | Multiple input DC-DC power converter | |
| US7009859B2 (en) | Dual input DC-DC power converter integrating high/low voltage sources | |
| CN101459381A (en) | Control apparatus and method for Boost type switch converter | |
| WO2008064605A1 (en) | A method, an apparatus and a system for supplying power with photovoltaic cells | |
| CN105356561B (en) | Double-battery charge discharge system and method | |
| CN103733464A (en) | High dynamic DC-voltage controller for photovoltaic inverter | |
| CN108923410B (en) | Controller and control method and a kind of energy-trap chip for collection of energy | |
| CN102710127B (en) | Single-inductance double-output power converter and driving method thereof | |
| CN101610024A (en) | The frequency generator of tool frequency jitter and PDM keyer | |
| CN103890958A (en) | System and method for increasing voltage in a photovoltaic inverter | |
| CN113287243A (en) | Wireless power transmission system and method | |
| TW201020712A (en) | Frequency-varied incremental conductance maximum power point tracking controller and algorithm for PV converter | |
| US9537391B2 (en) | Voltage regulation of a DC/DC converter | |
| CN104009627B (en) | Multiphase switching controller | |
| CN204465030U (en) | Portable power source and charge-discharge system thereof | |
| Meng et al. | An indoor solar energy harvesting system using dual mode SIDO converter with fully digital time-based MPPT | |
| CN102280908B (en) | Heterodyne slope frequency generation mode for light and heavy load switching of power supply | |
| CN105356744A (en) | Interlaced parallel bidirectional direct-current chopper circuit topology | |
| CN103095103A (en) | Frequency regulation control circuit capable of achieving curvature frequency-reduction with changes of loads in switching power supply | |
| CN101682211A (en) | Pulse width controlled dc-dc converter having pulse width period control for influencing power consumption | |
| CN105226941A (en) | A kind of space bidirectional, dc chopper circuit topology | |
| WO2011056902A1 (en) | Bootstrapped charger | |
| CN105024542A (en) | Solar energy boost converter and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20180105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |