CN103812334A - Multi-output switching power supply and multi-output power supply method - Google Patents
Multi-output switching power supply and multi-output power supply method Download PDFInfo
- Publication number
- CN103812334A CN103812334A CN201210457211.9A CN201210457211A CN103812334A CN 103812334 A CN103812334 A CN 103812334A CN 201210457211 A CN201210457211 A CN 201210457211A CN 103812334 A CN103812334 A CN 103812334A
- Authority
- CN
- China
- Prior art keywords
- output current
- output
- current
- upper limit
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005520 cutting process Methods 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The invention provides a multi-output switching power supply and a multi-output power supply method, comprising the following steps: a power stage circuit for operating at least one of the power switch and the single inductor according to a Pulse Width Modulation (PWM) signal to convert the input voltage into a converted voltage; a multi-output circuit receiving the converted voltage to generate a plurality of output currents; the voltage sensing circuit generates a feedback signal according to the converted voltage; and a PWM signal generating circuit for generating a PWM signal according to the feedback signal.
Description
Technical field
The present invention relates to a kind of many outputting cuttings switching power supplier and multi-output power supply Supply Method, refer to especially a kind of many outputting cuttings switching power supplier and multi-output power supply Supply Method of supplying multiple output currents.
Background technology
Fig. 1 shows the schematic diagram of existing many output switchings formula power supply circuit 1.As shown in Figure 1, in many output switchings formula power supply circuit 1, pulse-width modulation (pulse width modulation, PWM) signal generating circuit 11 is according to voltage sensing circuit 12 and 13, feedback signal FB1 and FB2 that the voltage of sensing exit point Vout1 and Vout2 produces, produce PWM signal PWM1 and PWM2, to operate two groups of asynchronous pressure boosting switching power level circuit 14 and 15, in order to input voltage vin is converted to the voltage of exit point Vout1 and Vout2.Existing many output switchings formula power supply circuit 1 needs multiple power stage circuits 14 and 15, input voltage vin is converted to the voltage of multiple exit point Vout1 and Vout2.Wherein, power stage circuit 14 and 15 can be synchronizes or asynchronous voltage-dropping type, booster type, back-pressure type or buck-boost type power stage circuit, as shown in Fig. 2 A-2J.
Above-mentioned prior art needs power stage circuit more than two, so that multiple output current Io1 and Io2 to be provided, and quite inconvenience in application, manufacturing cost is also high.
In view of this, the present invention, for above-mentioned the deficiencies in the prior art, proposes a kind of many outputting cuttings switching power supplier and multi-output power supply Supply Method, can share a power stage, share same inductance, can produce multiple output, and capable of dynamic is adjusted electric current distribution.
Summary of the invention
One of the object of the invention is to overcome the deficiencies in the prior art and defect, proposes a kind of many outputting cuttings switching power supplier.
Another object of the present invention is to propose a kind of multi-output power supply Supply Method.
For reaching above-mentioned purpose, just wherein a viewpoint is sayed, the invention provides a kind of many outputting cuttings switching power supplier, comprise: a power stage circuit, in order to according to a pulse-width modulation (pulse width modulation, PWM) signal, wherein at least one power switch and single inductance of operation, and an input voltage is converted to a changing voltage; One multiple output circuit, receives this changing voltage, to produce multiple output currents, is supplied to multiple exit points; One voltage sensing circuit, according to the voltage of this changing voltage, to produce a feedback signal; And a PWM signal generating circuit, according to this feedback signal, to produce this PWM signal.
A kind of enforcement in kenel therein, in this many outputting cuttings switching power supplier, punctual lower than a default position when this changing voltage, be reduced by least an output current.
A kind of enforcement in kenel therein, this many outputting cuttings switching power supplier can more comprise: a current control circuit, in order to the each output current of difference sensing, to produce corresponding Current Control signal, wherein, this multiple output circuit is according to this Current Control signal, and produces the plurality of output current.
In above-mentioned enforcement kenel, the plurality of output current can be provided with a total amount upper limit, and the upper limit of the each output current of this current control circuit dynamic assignment.
In above-mentioned enforcement kenel, this multiple output circuit can comprise multiple load switches, lay respectively on the path of the plurality of output current, and the plurality of load switch operates according to this Current Control signal, to adjust respectively the plurality of output current.
Implement in kenel in one, at least one output current is provided with the upper limit, and this current control circuit is adjusted this Current Control signal, when being no more than on this, this output current that is provided with the upper limit prescribes a time limit, make the complete conducting of corresponding load switch, but prescribe a time limit when this corresponding complete conducting of load switch meeting exceedes on this this output current that is provided with the upper limit, make this corresponding load switch part conducting, so that this output current that is provided with the upper limit is no more than this upper limit.
Implement in kenel in one, the plurality of output current comprises a main output current, corresponding to a basic load switch, and at least one subordinate output current, corresponding to a subordinate load switch, and this current control circuit is adjusted this Current Control signal, preferentially to maintain this main output current in a requirements.
In above-mentioned enforcement kenel, the plurality of output current can be provided with a total amount upper limit, and in the time that this main output current is maintained at a requirements, this current control circuit is adjusted this Current Control signal, so that being deducted to the remaining magnitude of current of this requirements, this total amount upper limit distributes to each subordinate output current.
Implement in kenel in one, this many outputting cuttings switching power supplier is preferably a power bank (power bank).
With regard to another viewpoint speech, the present invention also provides a kind of multi-output power supply Supply Method, comprise: according to a pulse-width modulation (pulse width modulation, PWM) signal, operate a power stage circuit, and an input voltage is converted to a changing voltage, and according to this changing voltage, produce multiple output currents; And control respectively the plurality of output current, be no more than a total amount upper limit to maintain the electric current total amount of the plurality of output current.
Implement in kenel in one, the method can more comprise: punctual lower than a default position when this changing voltage, be reduced by least an output current.
Implement in kenel in one, the plurality of output current comprises a main output current, and at least one subordinate output current, and the method more comprises: preferentially maintain this main output current in a requirements.
In above-mentioned enforcement kenel, the method can more comprise: in the time that this main output current is maintained at a requirements, this total amount upper limit is deducted to the remaining magnitude of current of this requirements and distribute to each subordinate output current.
Implement in kenel in one, the method can more comprise: the upper limit of the each output current of dynamic assignment.
In above-mentioned enforcement kenel, the step of the upper limit of the each output current of dynamic assignment can comprise: when an output current does not wherein reach on it in limited time, improve the upper limit of another output current.
Illustrate in detail below by specific embodiment, when the effect that is easier to understand object of the present invention, technology contents, feature and reaches.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of existing many output switchings formula power supply circuit 1;
Fig. 2 A-2J shows synchronous or asynchronous voltage-dropping type, booster type, back-pressure type or the buck-boost type circuit for power conversion of various types;
Fig. 3 shows first embodiment of the present invention;
Fig. 4 shows second embodiment of the present invention;
Fig. 5 shows the 3rd embodiment of the present invention;
Fig. 6 shows the 4th embodiment of the present invention.
Symbol description in figure
1,2, the switching power supplier of outputting cutting more than 3,4
11,23,33,43 PWM signal generating circuits
12,13,24,34,44 voltage sensing circuits
14,15,21,31,41 power stage circuits
22,32,42 multiple output circuits
25 battery circuits
36,46 current control circuits
FB1, FB2 feedback signal
Io1, Io2, Io3, Io4, Io5, Io6, Io7, Io8 output current
L inductance
PWM1, PWM2, PWM3 PWM signal
Q1, Q2 load switch
Vin input voltage
Vout1, Vout2, Vout3, Vout4, Vout5, Vout6, Vout7, Vout8 exit point
Embodiment
Refer to Fig. 3, show first embodiment of the invention.As shown in Figure 3, many output switchings formula power supply circuit 2 comprises power stage circuit 21, multiple output circuit 22, PWM signal generating circuit 23 and voltage sensing circuit 24.In the present embodiment, power stage 21 can be as shown in Fig. 2 A-2J, is synchronous or asynchronous voltage-dropping type, booster type, back-pressure type or the buck-boost type circuit for power conversion of various types.Power stage 21 is according to pulse-width modulation (pulse width modulation, PWM) signal PWM3, operation power switch wherein, and it is (not shown to share an inductance, be shown in subsequent embodiment), so that input voltage vin is converted to changing voltage.Voltage sensing circuit 24 sensing changing voltages, and then produce feedback signal with input PWM signal generating circuit 23.PWM signal generating circuit 23 is according to feedback signal, to produce PWM signal PWM3.Multiple output circuit 22 receives changing voltage, to produce multiple output currents, such as but not limited to two output current Io3, Io4 as shown in the figure, is supplied to two exit point Vout3, Vout4.The number of multiple output currents and corresponding exit point is not limited to two, and can be more.
In above-mentioned first embodiment, if two exit point Vout3, Vout4 need a large amount of electric currents, when consequently the total amount of two output current Io3, Io4 is excessive, will make the current potential of changing voltage decline, likely exceed the load-bearing capacity of power stage 21.When this situation, according to the present invention, can detect this changing voltage whether accurate lower than a default position, and punctual lower than this default position when changing voltage, can downgrade two output current Io3, Io4 at least one of them.The mode of detecting, such as but not limited to can be by the output of voltage sensing circuit 24, feedovers to multiple output circuit 22, relatively accurate with this default position, to control two output current Io3, Io4 one of them or both.Certainly, whether detecting changing voltage, lower than the accurate mode in default position, is not limited to produce feedforward signals via voltage sensing circuit 24, and icon is only a kind of execution mode wherein.Because 22 of multiple output circuits just receive changing voltage, therefore also can in multiple output circuit 22 inside directly by default to this changing voltage (or its dividing potential drop) and this position accurate (or its dividing potential drop) relatively, just can not need in the case to obtain feedforward signal from voltage sensing circuit 24.And downgrade two output current Io3, Io4, also can there is various arrangements, for example both downgrade simultaneously or are preferentially maintained at requirements take one of them as main for induced current, and downgrade another non-staple output current (below non-staple output current being called to " subordinate output current ").Take the latter as example, suppose that exit point Vout4 is the output of preecedence requirement power supply, output current Io4 is main output current, if now the total amount of two output current Io3, Io4 is excessive, no matter reason is because the demand of two output current Io3, Io4 whichever when too high, can preferentially downgrade output current Io3 but keep output current Io4, preferentially to keep wherein main output current (in this example as output current Io4).It should be noted that, the above,, when the current potential of changing voltage declines when too low, downgrades at least function of one of them of two output currents, is only preferred embodiments and imperative not.For example, if can determine the needed electric current total amount of two exit points, can not exceed the load-bearing capacity of power stage 21 time, certainly just can not need this function.
Fig. 4 shows second embodiment of the present invention.As shown in Figure 4, many output switchings formula power supply circuit 3 comprise power stage circuit 31, multiple output circuit 32, PWM signal generating circuit 33, voltage sensing circuit 34, with current control circuit 36.Different from first embodiment, the present embodiment shows that many output switchings formula power supply circuit 3 more comprises current control circuit 36.Current control circuit 36 sensing output current Io5 and Io6 respectively, to produce corresponding Current Control signal, and multiple output circuit 32 receives changing voltage, and according to Current Control signal, and produce multiple output currents.With last embodiment similarly, whether accurately lower than a default position can (but nonessential) detect this changing voltage, and punctual lower than this default position when changing voltage, can downgrade two output current Io5 and Io6 at least one of them.The mode of detecting is feedovered to current control circuit 36 such as but not limited to detect result by voltage sensing circuit 34, to judge whether downgrading electric current.Certainly, as previously mentioned, also can directly judge with electric current and adjust according to changing voltage by multiple output circuit 32.
In preferred embodiments, at least one of them is provided with upper current limit to the plurality of output current, and current control circuit 36 for example but must capable of dynamic distribute or adjusts this upper current limit.Current control circuit 36, according to current sense signal and the aforementioned currents upper limit, is adjusted Current Control signal, makes multiple output currents reach optimized arrangement.For example, can, according to user's demand, multiple output current controls be as follows set:
Arrangement one: in the time that each output current demand does not exceed each upper current limit, provide each output current according to each output current demand; And in the time that wherein an output current demand exceedes its upper current limit, this output current is limited to its upper current limit.In this arrangement, that each upper current limit can be is fixing, it is adjustable also to can be.
Arrangement two: when in multiple output currents, when the demand of an output current does not exceed the upper current limit of its initial setting, the upper limit of another output current can be heightened.For example, can downgrade the upper limit of a subordinate output current, and heighten the upper limit of a main output current.
Arrangement three: set the total amount upper limit of multiple output currents, and the upper limit of the each output current of dynamic assignment.The demand priority of main output current is satisfied; When after the need satisfaction of main output current, by the total amount upper limit deduct this main output current the remaining magnitude of current, distribute to remaining output current.
It should be noted that: above three kinds of arrangements are not limited to independent use separately, also can combine mutually.For example, in arrangement one, two, can set the total amount upper limit, and preferentially meet the demand of main output current, etc.
Fig. 5 shows the 3rd embodiment of the present invention.As shown in Figure 5, many output switchings formula power supply circuit 4 comprise power stage circuit 41, multiple output circuit 42, PWM signal generating circuit 43, voltage sensing circuit 44, with current control circuit 46.The present embodiment shows 4 one kinds of many output switchings formula power supply circuits embodiment more specifically.Wherein, power stage circuit 41, such as but not limited to synchronous boost type circuit for power conversion as shown in the figure, should be noted, power stage circuit 41 utilizes a common inductance L, by multiple output circuit 42, can produce multiple output current Io7, Io8.In the present embodiment, show for example generation and the control mode of multiple output current Io7, Io8, multiple output circuit 42 comprises multiple load switch Q1 and Q2, be arranged at respectively on the path of multiple output currents that (such as but not limited to as shown in the figure, load switch Q1 and exit point Vout7 couple; Load switch Q2 and exit point Vout8 couple), and load switch Q1, Q2 operate according to Current Control signal respectively.The grid voltage of Current Control signal control load switch Q1, Q2, to determine the whether complete conducting of load switch Q1, Q2, for example, can coordinate the control embodiment of aforesaid arrangement one, two, three.
For example, if output current Io7 is provided with the upper limit, prescribe a time limit when output current Io7 is no more than on this, Current Control signal makes the corresponding complete conducting of load switch Q1, and the load circuit that now output current Io7 is connected by exit point Vout7 is controlled.But the in the situation that of the complete conducting of load switch Q1, if current sense signal shows, output current Io7 can exceed on this in limited time, the grid voltage of Current Control signal control load switch Q1, make its only part conducting, now output current Io7 is just by load switch Q1 is controlled, so that output current Io7 is no more than this upper limit.Output current Io8 also can be with similar mode control.
Again for example, suppose output current Io8 for main output current Io7 be subordinate output current.Prescribe a time limit when output current Io7 is no more than on its initial setting, not only can make the complete conducting of load switch Q1, and the upper limit of the main output current Io8 of adjustable height.That is, after main output current Io8 exceedes its initial setting upper limit but does not exceed it and heighten upper in limited time, still make the complete conducting of load switch Q2.
Again for example, suppose that the total amount of output current Io7, Io8 is provided with the upper limit, and output current Io8 for main output current Io7 be subordinate output current.Load switch Q2 keeps complete conducting, and current control circuit 46 is detected output current Io8 and calculate the difference of this total amount upper limit and output current Io8, and this difference is distributed to output current Io7.When this difference is higher than exit point Vout7 during to the demand of output current Io7, the complete conducting of load switch Q1, the load circuit that now output current Io7 is connected by exit point Vout7 is controlled.But when this difference is lower than exit point Vout7 during to the demand of output current Io7, this difference just becomes the upper limit of output current Io7, the grid voltage of Current Control signal control load switch Q1, make its only part conducting, now output current Io7 is just by load switch Q 1 is controlled, so that output current Io7 is no more than this upper limit.
Fig. 6 shows the 4th embodiment of the present invention.In the present embodiment, many output switchings formula power supply circuit 5 is for example applied to power bank (power bank), and therefore, the input voltage vin of many output switchings formula power supply circuit 5 comes from a battery circuit 25, as shown in the figure.The present embodiment is intended to explanation, comprises battery in the time that the present invention is applied to power bank, must not need to comprise battery in other situation.
Below for preferred embodiment, the present invention is described, just the above, only, for making those skilled in the art be easy to understand content of the present invention, be not used for limiting interest field of the present invention.Under same spirit of the present invention, those skilled in the art can think and various equivalence changes.For example, shown in each embodiment circuit, can insert the element that does not affect signal major significance, as other switch etc.; Again for example, the present invention can also be applied to the situation of simple restriction output current, and is not limited to be applied to the situation that circuit can be loaded that exceeds; Again for example, adjust the mode of at least one output current when output voltage on time lower than one default, be not limited to be applied in the situation of no current sensing circuit, can also be applied to the situation of current sensing circuit or/and current control circuit.All this kind, all can teaching according to the present invention analogize and obtain, and therefore, scope of the present invention should contain above-mentioned and other all equivalences and change.
Claims (15)
1. the switching power supplier of outputting cutting more than, is characterized in that, comprises:
One power stage circuit, in order to according to a pulse width modulation signal, operates wherein at least one power switch and single inductance, and an input voltage is converted to a changing voltage;
One multiple output circuit, receives this changing voltage, to produce multiple output currents, is supplied to multiple exit points;
One voltage sensing circuit, according to the voltage of this changing voltage, to produce a feedback signal; And
One pulse width modulation signal produces circuit, according to this feedback signal, to produce this pulse width modulation signal.
2. many outputting cuttings switching power supplier as claimed in claim 1, wherein, punctual lower than a default position when this changing voltage, be reduced by least an output current.
3. many outputting cuttings switching power supplier as claimed in claim 1, wherein, also comprises:
One current control circuit, in order to the each output current of sensing respectively, to produce corresponding Current Control signal, wherein, this multiple output circuit is according to this Current Control signal, and produces the plurality of output current.
4. many outputting cuttings switching power supplier as claimed in claim 3, wherein, the plurality of output current is provided with a total amount upper limit, and the upper limit of the each output current of this current control circuit dynamic assignment.
5. many outputting cuttings switching power supplier as claimed in claim 3, wherein, this multiple output circuit comprises multiple load switches, lays respectively on the path of the plurality of output current, and the plurality of load switch operates according to this Current Control signal, to adjust respectively the plurality of output current.
6. many outputting cuttings switching power supplier as claimed in claim 5, wherein, at least one output current is provided with the upper limit, and this current control circuit is adjusted this Current Control signal, prescribe a time limit when this output current that is provided with the upper limit is no more than on this, make the complete conducting of corresponding load switch, but prescribe a time limit when this corresponding complete conducting of load switch meeting exceedes on this this output current that is provided with the upper limit, make this corresponding load switch part conducting, so that this output current that is provided with the upper limit is no more than this upper limit.
7. many outputting cuttings switching power supplier as claimed in claim 6, wherein, the plurality of output current comprises a main output current, corresponding to a basic load switch, and at least one subordinate output current, corresponding to a subordinate load switch, and this current control circuit adjusts this Current Control signal, preferentially to maintain this main output current in a requirements.
8. many outputting cuttings switching power supplier as claimed in claim 7, wherein, the plurality of output current is provided with a total amount upper limit, and in the time that this main output current is maintained at a requirements, this current control circuit is adjusted this Current Control signal, distributes to each subordinate output current so that this total amount upper limit is deducted to the remaining magnitude of current of this requirements.
9. many outputting cuttings switching power supplier as claimed in claim 1, wherein this many outputting cuttings switching power supplier is a power bank.
10. a multi-output power supply Supply Method, is characterized in that, comprises:
According to a pulse width modulation signal, operation one power stage circuit, and an input voltage is converted to a changing voltage, and according to this changing voltage, produce multiple output currents; And
Control respectively the plurality of output current, be no more than a total amount upper limit to maintain the electric current total amount of the plurality of output current.
11. multi-output power supply Supply Methods as claimed in claim 10, wherein, also comprise: punctual lower than a default position when this changing voltage, be reduced by least an output current.
12. multi-output power supply Supply Methods as claimed in claim 10, wherein, the plurality of output current comprises a main output current, and at least one subordinate output current, and the method also comprises: preferentially maintain this main output current in a requirements.
13. multi-output power supply Supply Methods as claimed in claim 12, wherein, also comprise: in the time that this main output current is maintained at a requirements, this total amount upper limit is deducted to the remaining magnitude of current of this requirements and distribute to each subordinate output current.
14. multi-output power supply Supply Methods as claimed in claim 10, wherein, also comprise: the upper limit of the each output current of dynamic assignment.
15. multi-output power supply Supply Methods as claimed in claim 14, wherein, the step of the upper limit of the each output current of dynamic assignment comprises: when an output current does not wherein reach on it in limited time, improve the upper limit of another output current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210457211.9A CN103812334A (en) | 2012-11-14 | 2012-11-14 | Multi-output switching power supply and multi-output power supply method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210457211.9A CN103812334A (en) | 2012-11-14 | 2012-11-14 | Multi-output switching power supply and multi-output power supply method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103812334A true CN103812334A (en) | 2014-05-21 |
Family
ID=50708661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210457211.9A Pending CN103812334A (en) | 2012-11-14 | 2012-11-14 | Multi-output switching power supply and multi-output power supply method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103812334A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207470A (en) * | 2015-09-14 | 2015-12-30 | 广东欧珀移动通信有限公司 | An intelligent DC conversion device and application system |
| CN105929210A (en) * | 2016-05-06 | 2016-09-07 | 中南大学 | Detection signal generation circuit and self-check system |
| CN113497564A (en) * | 2020-04-03 | 2021-10-12 | 台达电子企业管理（上海）有限公司 | Power adapter and control method thereof |
| US11737219B2 (en) | 2020-04-03 | 2023-08-22 | Delta Electronics (Shanghai) Co., Ltd | Power adapter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6222352B1 (en) * | 1999-05-06 | 2001-04-24 | Fairchild Semiconductor Corporation | Multiple voltage output buck converter with a single inductor |
| US20030086280A1 (en) * | 2001-11-05 | 2003-05-08 | Laurence Bourdillon | Multiple -output flyback converter having bi-directional switching means for independent control of the multiple outputs |
| CN101556499A (en) * | 2008-04-09 | 2009-10-14 | 华邦电子股份有限公司 | Current adjustment device, power supply device, and current adjustment method |
| CN101939900A (en) * | 2008-02-08 | 2011-01-05 | 住友电气工业株式会社 | Envelope tracking power supply circuit and high frequency amplifier including the circuit |
| CN102013798A (en) * | 2009-09-04 | 2011-04-13 | 立锜科技股份有限公司 | Switching power supply and driving circuit and control method thereof |
| CN102055322A (en) * | 2009-11-03 | 2011-05-11 | 立锜科技股份有限公司 | Single-inductor multi-output power converter and control method thereof |
-
2012
- 2012-11-14 CN CN201210457211.9A patent/CN103812334A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6222352B1 (en) * | 1999-05-06 | 2001-04-24 | Fairchild Semiconductor Corporation | Multiple voltage output buck converter with a single inductor |
| US20030086280A1 (en) * | 2001-11-05 | 2003-05-08 | Laurence Bourdillon | Multiple -output flyback converter having bi-directional switching means for independent control of the multiple outputs |
| CN101939900A (en) * | 2008-02-08 | 2011-01-05 | 住友电气工业株式会社 | Envelope tracking power supply circuit and high frequency amplifier including the circuit |
| CN101556499A (en) * | 2008-04-09 | 2009-10-14 | 华邦电子股份有限公司 | Current adjustment device, power supply device, and current adjustment method |
| CN102013798A (en) * | 2009-09-04 | 2011-04-13 | 立锜科技股份有限公司 | Switching power supply and driving circuit and control method thereof |
| CN102055322A (en) * | 2009-11-03 | 2011-05-11 | 立锜科技股份有限公司 | Single-inductor multi-output power converter and control method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207470A (en) * | 2015-09-14 | 2015-12-30 | 广东欧珀移动通信有限公司 | An intelligent DC conversion device and application system |
| CN105207470B (en) * | 2015-09-14 | 2017-07-28 | 广东欧珀移动通信有限公司 | An intelligent DC conversion device and application system |
| CN105929210A (en) * | 2016-05-06 | 2016-09-07 | 中南大学 | Detection signal generation circuit and self-check system |
| CN105929210B (en) * | 2016-05-06 | 2018-09-04 | 中南大学 | A kind of detection signal generating circuit and self-checking system |
| CN113497564A (en) * | 2020-04-03 | 2021-10-12 | 台达电子企业管理（上海）有限公司 | Power adapter and control method thereof |
| US11711017B2 (en) | 2020-04-03 | 2023-07-25 | Delta Electronics (Shanghai) Co., Ltd | Adapter and control method thereof |
| CN113497564B (en) * | 2020-04-03 | 2023-08-18 | 台达电子企业管理（上海）有限公司 | Power adapter and control method thereof |
| US11737219B2 (en) | 2020-04-03 | 2023-08-22 | Delta Electronics (Shanghai) Co., Ltd | Power adapter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104242651B (en) | Advanced Phase Control for Multiphase Converters | |
| CN101247087B (en) | Current detection circuit and current type switch adjustor | |
| CN101958650B (en) | quasi-resonance control device and method, and switching regulator and method thereof | |
| US9385597B2 (en) | Multi-mode current-allocating device | |
| CN102761244A (en) | charge pump feedback control device and method thereof | |
| US9041371B2 (en) | Switching regulator | |
| CN106558989B (en) | The system and method for step-down switching converter duty ratio can be extended without the control of maximum duty factor | |
| CN101040421B (en) | Switching regulator control circuit, switching regulator using the same, and switching signal generating device | |
| CN102347684B (en) | Control circuit and method for reducing output ripple of constant on-time power supply circuit | |
| CN101247079A (en) | Semiconductor device | |
| CN104600983A (en) | Step-up and step-down switch power converter, control circuit and mode switching control unit | |
| CN103019285A (en) | Power supply with dynamic voltage drop control and method thereof | |
| US8947065B2 (en) | DC-DC controller and control method thereof | |
| CN107786081B (en) | Voltage conversion apparatus and method of controlling the same | |
| KR20150055735A (en) | Multiple battery charger and control method thereof | |
| Ghosh et al. | High gain DC-DC step-up converter with multilevel output voltage | |
| CN104335447A (en) | Power supply control | |
| CN109906547A (en) | Power converter with the control of predictive pulse width modulation device | |
| CN113765368A (en) | A three-level DC converter, power supply system and chip | |
| CN103812334A (en) | Multi-output switching power supply and multi-output power supply method | |
| KR101677705B1 (en) | Multiple output switched capacitor dc-dc converter | |
| CN103199703A (en) | Control circuit of voltage-type regulator and control method of same | |
| Ahmadi et al. | Controller design method for a cascaded converter system comprised of two DC-DC converters considering the effects of mutual interactions | |
| Kobori et al. | Single inductor dual output DC-DC converter design with exclusive control | |
| CN107070220B (en) | Single inductance multiple output DC-DC converter and its charge constant control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140521 |