CN101436826A - Fast transient step load response in a power converter - Google Patents
Fast transient step load response in a power converter Download PDFInfo
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- CN101436826A CN101436826A CNA2008101887021A CN200810188702A CN101436826A CN 101436826 A CN101436826 A CN 101436826A CN A2008101887021 A CNA2008101887021 A CN A2008101887021A CN 200810188702 A CN200810188702 A CN 200810188702A CN 101436826 A CN101436826 A CN 101436826A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
A method of controlling a power converter having at least one switching device for supplying an output voltage and a load current to a load is disclosed. The method includes sensing the output voltage and sensing the load current. The method further includes controlling a duty cycle of the switching device according to the sensed output voltage and a voltage control loop when a rate of change of the load current does not exceed a threshold level. The method also includes adjusting the duty cycle of the switching device set by the voltage control loop when the rate of change of the load current exceeds the threshold level.
Description
The cross reference of related application
The application number that the application requires on September 28th, 2007 to submit to is 60/997,051 U.S. Provisional Application No..The disclosed full content of above-mentioned application is combined in herein as a reference.
Technical field
The present invention relates to power converter.
Background technology
This part provides the information that relates to background technology of the present invention, but these contents not necessarily constitute prior art.
Many contemporary electronic systems require high current conversion speed.This fast transient step load requires the voltage control loop and the output filter of careful design power transducer, with sustaining voltage overshoot (overshoot) He Xiachong (undershoot) in required specification limit.This often causes reducing output inductor and improves switching frequency.
In typical PFC boosted pre-regulator, the significantly voltage swing in the large-scale power supply was a key factor that is used for determining the large value capacitor specification.For example, the typical PFC that is used to the to adjust 390 volts of voltages rail 450 volts of large value capacitors of needs usually that boost are because the voltage overshoot during the load rejection (load dump) may be up to 430 volts.
Similarly, in typical voltage regulator module (VRM), use a large amount of expensive load capacitors usually to satisfy the needs of high current conversion speed.For this reason, VRM typically comprises the output inductor of smaller value and the switching frequency of higher value.In addition, the very high gain of the common utilization of VRM responds the very little variation in the output voltage.This may produce stability problem in some VRM.
Summary of the invention
This part provided general summary the of the present invention, but this is not whole protection range of the present invention and all full disclosures of feature.
According to an aspect of the present invention, disclose a kind of method of power controlling transducer, this power converter has at least one switching device, and this power converter is used for providing output voltage and load current to load.This method comprises sensing output voltage, sensing load current.This method also comprises, when the rate of change of load current surpasses threshold level, and the duty ratio of coming the control switch device according to the output voltage and the voltage control loop of sensing.This method further comprises, when the rate of change of load current surpasses threshold level, adjusts the duty ratio of the switching device of being set by voltage control loop.
According to another aspect of the present invention, power converter comprises controller and at least one switching device.This controller is configured to, when the rate of change of load current surpasses threshold level, and the duty ratio of coming the control switch device according to the output voltage and the voltage control loop of sensing.This controller also is configured to, and when the rate of change of load current surpasses threshold level, adjusts the duty ratio of the switching device of being set by voltage control loop.
By reading description provided herein, will know other application of the present invention.Description and particular instance in this summary of the invention part only are for illustration purpose, and should not limit protection scope of the present invention.
Description of drawings
Accompanying drawing described herein only is the illustrative purposes of carrying out for to selected embodiment, and does not represent all possible carrying into execution a plan, and should not limit protection scope of the present invention.
Fig. 1 is the circuit diagram according to the power converter of an embodiment, and this power converter comprises PFC boost converter, Switching Power Supply, controller and sample circuit.
Fig. 2 is the circuit diagram of voltage regulator module (VRM) system according to another embodiment of the invention;
Fig. 3 is the circuit diagram of the example modelled execution mode of power converter, comprises the analog circuit that is used to respond the step load variation and adjusts the duty ratio of power converter;
Fig. 4 is that the substep of the load on the power converter among Fig. 3 under the situation that does not have the load current sensing increases the figure to the influence of electric current and voltage;
Fig. 5 is that the substep of the load on the power converter among Fig. 3 under the situation with the control of load current sensing and current ratio increases the figure to the influence of electric current and voltage;
Fig. 6 is that the substep of the load on the power converter among Fig. 3 under the situation that does not have the load current sensing reduces the figure to the influence of electric current and voltage; With
Fig. 7 is that the substep of the load on the power converter among Fig. 3 under the situation with the control of load current sensing and current ratio reduces the figure to the influence of electric current and voltage.
Embodiment
Each exemplary embodiment is now described with reference to the accompanying drawings more all sidedly.
It is in order to make the present invention detailed thorough that exemplary embodiment is provided, and makes those skilled in the art understand protection scope of the present invention fully.Many specific details have been described, as the example of specific features, equipment and method, so that the reader can thoroughly understand embodiments of the invention herein.It will be apparent to one skilled in the art that does not need to adopt specific details, can implement exemplary embodiment of the present invention by different ways, and these details and embodiment should not limit the scope of the invention.In certain embodiments, will be not described in detail known processing, known device structure and technique known.
Term used herein only is in order to describe the purpose of specific exemplary embodiment, and should not be construed as limiting.Employed in this article singulative " one ", " one " and " being somebody's turn to do " mean and also comprise plural form, unless context is clearly pointed out in addition.Term " comprises ", " including ", " comprising " and " having " be open comprising, therefore specify the existence of feature, integer, step, operation, element and/or the parts of being stated, but do not get rid of the existence or the increase of one or more further features, integer, step, operation, parts, element and/or their group.Method step described herein, processing and operation are not considered to necessarily require them to carry out with particular order that discussed or shown, unless point out to be execution sequence clearly.Should also be understood that and also can adopt additional or alternative step.
When an element or layer be called as " ... on ", " being engaged to ", " being connected to " or " being coupled to " another element or layer, it can be directly another element or the layer on, directly be engaged to, be connected to or be coupled to another element or the layer, perhaps can exist medium element or the layer.On the contrary, when parts be called as " directly exist ... on ", " directly being engaged to ", " being directly connected to " or " being directly coupled to " another parts or layer, then do not have medium element or layer.Other word that is used to describe the interelement relation should explain in a similar fashion (for example, " and ... between " with " and directly exist ... between ", " adjacent " and " direct neighbor ", or the like).Term used herein " and/or " comprise project that one or more companies list relatedly arbitrarily and all combinations.
Although use the term first, second, third, etc. to describe different elements, parts, zone, layer and/or part herein, these elements, parts, zone, layer and/or part should not be subjected to these term restrictions.These terms only are used for an element, parts, zone, layer or part are distinguished mutually with another zone, layer or part.When using in this article, do not comprise the implication of order or order such as the term of " first ", " second " and other numerical value term, unless context is clearly pointed out.Therefore, first element of discussing below, parts, zone, layer or part may be known as second element, parts, zone, layer or part, and can not break away from the instruction of exemplary embodiment of the present invention.
According to an aspect of the present invention, disclose a kind of method of power controlling transducer, this power converter has at least one switching device, is used for providing output voltage and load current to load.This method comprises sensing output voltage, sensing load current.This method also comprises, when the rate of change of load current surpasses threshold level, and the duty ratio of coming the control switch device according to the output voltage and the voltage control loop of sensing.This method further comprises, when the rate of change of load current surpasses threshold level, adjusts the duty ratio of the switching device of being set by voltage control loop.
This method can be used in any power converter topology with one or more switching devices, and the output current that wherein is input to load can be sensed after the big capacity output capacitor of transducer.For example, this method can be used in power factor correction (PFC) and boosts in adjuster, voltage regulator module (VRM) and/or the DC-DC transducer.By this method, the stress and the big voltage that can reduce on the large value capacitor changes.In the time of in being used in VRM, this method especially can reduce voltage overshoot and Xia Chong.
Now the exemplary power transducer that is used to carry out said method is discussed with reference to Fig. 1-7.However, it should be understood that this method can carry out in various other power converters, and do not break away from instruction of the present invention.
Fig. 1 shows the power supply according at least one aspect of the present invention, prevailingly with Reference numeral 100 indications.This power supply comprises the PFC boost power transducer 102 that is used for providing to load output voltage and electric current.In exemplary power 100, load is a switching regulator power converter 104.108 pairs of AC voltages from voltage source 106 of bridge rectifier carry out rectification and are entered into PFC boost power transducer 102.This PFC boost power transducer 102 provides power factor correction and output voltage is provided, and this output voltage is imported into switching regulator power converter 104.Switching regulator power converter 104 provides power to load 110.
The voltage that 112 pairs of PFC boost power of controller transducer 102 is provided is sampled.This controller 112 can be analog controller or digitial controller.112 controls of this controller, especially, the switching device in the PFC boost power transducer 102, as Q1, duty cycle of switching, to adjust the output voltage of PFC boost power transducer 102.Electric current in the power converter 102 is sampled with second frequency.In certain embodiments, the first frequency that is sampled greater than voltage of second frequency.In Fig. 1, show electric current by sample circuit 114 samplings.Sample circuit 114 can be a part, external circuit or the combination of the two of controller 112.The series connection sense resistor 116 that is coupled to the transducer 102 on the outlet side of big capacity output capacitor 118 by use is come current sensor.Can use can current sensor any miscellaneous equipment, wait such as current transformer, Hall effect transducer to replace sense resistor 116, perhaps use together with sense resistor 116.
As mentioned above, sample circuit 114 can be the part of discrete circuit, controller 112 or controller 112 and the combination of the parts of controller 112 outsides.For example, sample circuit 114 can comprise external comparator, and this comparator produces the logic level that is input to controller 112, with indication load current level.Alternately or additionally, sample circuit 114 comprises the comparator (if available) in the controller 112.This sample circuit can also comprise, or additionally comprises the flash-type A/D converter (ADC) in the controller 112.
When step load was applied power supply 100, for example, when half load is almost instantaneous when becoming full load, load current changed very fast.Each current sample is compared with last sampling.When the variation of electric current, when just di/dt reached predetermined threshold, sample circuit 114 determined to load on quick variation, and the duty ratio of switching device Q1 should be adjusted so that voltage overshoot and Xia Chong minimize.Wherein, the PFC boost power transducer 102 largest current change speed that can provide is by the duty ratio decision of switching device Q1.Therefore, adjust duty ratio and can change PFC boost power transducer 102 and can come responsive load to change with speed how soon, thus change the voltage overshoot that produces and dash down what.Electric current is sampled with certain frequency, and this frequency is enough to detect the variation of electric current before output voltage changes.This allows the variation of 112 pairs of output currents of controller to make quick response.
The adjustment that sample circuit 114 is determined the duty ratio of switching device.This can realize in many ways.Sample circuit 114 can comprise predetermined question blank, and this question blank is calibrated, and with based on one or more operating parameters, for example the rate of change of initial conditions, output voltage, output current and output current provides required duty ratio adjustment.Adjustment to duty ratio also can be determined by equation.Like this, in order to improve the response that 102 pairs of step loads of PFC boost power transducer change, sample circuit 114 is not considered the duty ratio by the voltage control loop setting of controller 112, and adjusts duty ratio according to the previous duty ratio adjustment of determining.The duration of this adjustment can be set in many ways/determine.This duration can be, for example, and the time span of setting, the switch periods of some or can last till always and reach stable state.No matter used which kind of mode to determine the duration, when the duration of adjusting finished, the voltage control of duty ratio was taken over by controller 112 again.
The duty ratio of adjusting can obtain from two components.First component is based on, the duty ratio that provides of reference and output-voltage levels for example by controller 112.When power converter 102 during at steady operation, this is the unique component that is used to the duty ratio that obtains adjusting.Second component can realize by the other input of working load electric current as controller 112, is used for computed duty cycle.The second component of the duty ratio that is used to adjust can be provided by nonlinear component.When the output current that outputs to load changes fast, original duty ratio will be changed or replace to this nonlinear component to reach the duty ratio of adjustment.Be added to original duty ratio (or deduct from original duty ratio) amount determine can be based on equation or question blank.This equation or question blank can produce by simulation, test in addition accurate adjustment by reality then.
By way of example, suppose power supply 100 steady operation under the situation of 50% load, and input current is 2A.If step load is applied to the output of power supply with the switching rate of determining, then the current conversion speed that obtains at input side will depend on the step-up ratio or the step-down ratio of power supply.For example, if load current changes to 100% with the speed that needs input current be increased to 4A from 2A in 40 microseconds from 50%, will cause the switching rate of 50 milliamperes of every microseconds.
When electric current increases, the extracurrent of required 2A will be provided by large value capacitor 118.Because large value capacitor 118 is selected as having big capacitance, so it can not discharge significantly in this time.Yet because the equivalent series resistance (ESR) of capacitor 118, being input to switching regulator power converter 104 will have little voltage drop.Because very little by the caused voltage drop of the ESR of this capacitor, so controller 112 may can not discerned this variation.In addition, controller 112 is sampled to this voltage with very slow frequency.Like this, sample and identify this voltage at 112 pairs of these voltages of controller and will need to spend some times before having changed.If this voltage is sampled with the frequency of for example 2kHz, then per this voltage of 500 microseconds only is sampled once.When electric current when fully oblique line rises in 40 microseconds, voltage is not sampled when electric current increases probably.Yet the frequency of 114 pairs of current samples of sample circuit is greater than the voltage sample frequency.Accurate frequency depends on controller 112, ADC and/or is sample circuit 114 selected other elements, but the frequency of 100kHz is rational example.Therefore, per 10 microseconds of sample circuit to current sample once, and during electric current reaches 40 required microseconds of 4A, will obtain four times the sampling.
In this time, to compare with value before, each current sample is all very big.When the variation of electric current reaches threshold value, sample circuit 114 will be determined new duty ratio for switch Q1.Sample circuit 114 can retrieve this by the question blank from the pre-calibration above discussed and adjust to determine the duty ratio that this is new.Then, sample circuit is not considered the voltage control part of controller 112 and duty ratio is become or is increased to this new duty ratio.Like this, when load current when the 2A oblique line rises to 4A, each current sample can cause the increase of the duty ratio of switching device Q1.The duty ratio of this adjustment can be up to 100%.As discussed above, the duty ratio of this adjustment will remain on this level in the specific time, unless the tangible variation of load current.At last, when the duration of adjusting finished, the voltage control of duty ratio was taken over by controller 112 again.
Similarly, when unloading output current oblique line that load makes power converter 102 owing to substep and descend, sample circuit 114 can respond and reduce duty ratio fast, minimizes to impel voltage overshoot.Unload in the process of load at substep, as discussed above, the duty ratio of Q1 will continue to reduce in the specific duration.The duty ratio of this minimizing may be low to moderate 0% duty ratio.
The VRM system 200 of Fig. 2 shows another embodiment.VRM 220 receives the DC input voltages and provides output voltage for load 210.Load shown in the figure is a microprocessor, but load also can be the operable any load of VRM.Similar with the circuit of Fig. 1, controller 212 is sampled to the output voltage that is provided by VRM 220 with first frequency, and with second frequency output current is sampled.In Fig. 2, show electric current by sample circuit 214 samplings.Sample circuit 214 can be a part, external circuit or the combination of the two of controller 212.Use series connection sense resistor 216 to come current sensor.Also can use can current sensor any miscellaneous equipment, for example current transformer, Hall effect transducer wait and replace sense resistor 216, perhaps use together with sense resistor 216.
In this example, 220 pairs of 12V inputs of VRM are operated with output voltage that produces 1.2V and the maximum load current that transmits 20A.It moves with the 1MHz switching frequency and uses 0.2 μ H output inductor and be placed on close load place.This load can change electric current with the speed of every microsecond 100A.Technical specification allow to offer overshoot that maximum 50mV is arranged in the voltage of load and/or under dash.The ESR of output capacitor 218 is illustrated as resistor 222 in the drawings.Select capacitor 218, make that its ESR is half resistance of sense resistor 216.
Current sampling circuit 214 comprises four comparator circuits, and these four comparator circuits are configured to, and detects when load current progressively changes with 25% of maximum possible variation.Also can amplify from the current detection signal of sense resistor 216, and the analog-digital converter (ADC) that is fed to controller 212 is to handle by using accurate low skew differential amplifier.Typical comparator fast and fast controller 212 can be finished this task in 50 to 75 nanoseconds.
When the required electric current of load with the speed of every microsecond 100A when the 5A oblique line rises to 20A, the variation of output current will take place in 150 nanoseconds.The variation of this comparator identification electric current also triggers interrupt signal.During 50 to 75 nanoseconds of carrying out this required by task, the load current of 15A is provided by capacitor 218 in addition.At this time durations, the capacitor 7mV that will discharge.Because capacitor discharge, the voltage drop at sense resistor 216 two ends and the voltage drop at resistor 222 two ends make the voltage that offers load will reduce about 22mV.This controller 212 becomes near 100% duty ratio, and the electric current in the VRM inductor 224 will begin to reduce.Advancing the speed of electric current will be depended on the value of inductor.When applying 10.8V at 0.2 μ H inductor two ends, electric current will rise with the speed oblique line of every microsecond 54A.Like this, rise to 20A from 5A along oblique line and will need for 277 nanoseconds altogether.At this time durations, capacitor 218 will provide the only about half of of this extra 15A electric current.This causes capacitor 218 further to discharge into 1.16V voltage.Like this, output voltage remains on the 50mV permission of required 1.2V down in scope.
In this embodiment, the electric current ramp rate in the inductor is predictable, and amended duty ratio can be used preset time length.Like this, when load when 5A switches to 20A, duty ratio only needs 277 nanoseconds just be increased to about 100%.After this time, controller is allowed to recover the voltage control of duty ratio.
Fig. 3 shows and is used to provide the analog circuit 300 of power to load 310 according to one or more aspects of the present invention.This circuit 300 comprises provides the power converter 326 of output voltage to load 310.This circuit 300 comprises voltage error amplifier 328, and this voltage error amplifier 328 is used to amplify the error of the voltage that is provided to load 310.Circuit 300 further comprises integrated current sample and control circuit 330.
The curve chart of Fig. 4 shows under the situation of not using current sample and control circuit 330, and load changes the output voltage influence to the power converter 326 of Fig. 3 step by step.This power converter 326 is standing to change with the step load of speed from 30A to 60A of every microsecond 5A.432, this changes step by step and can see in the change in voltage at the series connection sense resistor R4 two ends in the power converter 326.Shown in 434, when load changes suddenly, from the due to voltage spikes decline of power converter 326 outputs.When the electric current in the inductor of power converter had been increased to and has been enough to overcome the minimizing of this voltage, this voltage dropped to 11.4 volts from 12 volts.Along with the continuation of time, voltage increases, up to it cross be flushed to stable state 12V till.This pattern continues, till the electric current by inductor and output voltage reach stable state once more.
Fig. 5 shows when using current sample and control circuit 330, and same step load changes the influence to the circuit among Fig. 3 300.532, this power converter is standing the load variations of same 30A to 60A.Although output voltage is still in 534 rapid drawdowns, the minimum value of output voltage is about 11.65 volts.Like this, with result's comparison shown in Figure 4, the voltage drop that is caused by load variations has reduced more than 0.2 volt.
Similarly, Fig. 6 and 7 shows the response that 326 pairs of loads of power converter reduce step by step.It is that speed with every microsecond 5A reduces to 30A from 60A that the substep of load changes.Fig. 6 shows the response when not using current sample and control circuit 330.636, the change in voltage at the sense resistor R4 two ends that load variations causes is tangible.In response to the unexpected variation of load, rise from stable state 12V output spike from the voltage output of power converter 326, and to peaking 12.6V.On the contrary, when using current sample and control circuit 330, power converter 326 is standing same load to be reduced step by step, as shown in Figure 7.The same with Fig. 6, in 736 variations that can see load from the voltage at sense resistor R4 two ends.Similarly, the output voltage of power converter 326 rises at 738 spikes from stable state 12V.Yet the peak value of this output voltage is lower than 12.4 volts.Increase step by step in response to load, use current sample and control circuit 330 to make the crest voltage overshoot reduce more than 0.2 volt.
Description to embodiment provided above is for example and illustrative purposes.This is not exhaustively should not be construed as limiting the invention yet.The individual elements of specific embodiment or feature are not limited to these certain embodiments usually,, under applicable situation, be interchangeable and can be used among the embodiment of selection, although do not illustrate especially or describe.Same part also can change in many ways.These variations should not be considered to break away from the present invention, and all such modifications all should be included in protection scope of the present invention.
Claims (19)
1. the method for a power controlling transducer, this power converter has at least one switching device, and this power converter is used for providing output voltage and load current to load, and this method comprises:
The described output voltage of sensing;
The described load current of sensing;
When the rate of change of described load current surpasses threshold level, the duty ratio of controlling described switching device according to the output voltage and the voltage control loop of sensing; And
When the rate of change of described load current surpasses described threshold level, adjust the duty ratio of the switching device of setting by described voltage control loop.
2. the method for claim 1, wherein set-up procedure is included in before the variation of the described output voltage that sensing causes owing to the rate of change of described load current, adjusts the duty ratio of described switching device.
3. method as claimed in claim 2, wherein, set-up procedure comprises when described load current increases, and increases the duty ratio of described switching device, and when described load current reduces, reduces the duty ratio of described switching device.
4. method as claimed in claim 2, wherein, the described output voltage of sensing comprises with first frequency samples to described output voltage, and wherein, the described load current of sensing comprises with second frequency samples to described load current, and described second frequency is greater than described first frequency.
5. the method for claim 1, wherein set-up procedure comprises the duty ratio of adjusting described switching device according to the load current of sensing.
6. the method for claim 1, wherein described power converter is the DC-DC transducer.
7. the method for claim 1, wherein described power converter is the PFC boost converter.
8. the method for claim 1, wherein described power converter is voltage regulator module (VRM).
9. the method for claim 1, wherein described power converter comprises the digitial controller of the duty ratio that is used to control and adjust described switching device.
10. method as claimed in claim 9, wherein, described digitial controller is configured to, by described output voltage being sampled the described output voltage of sensing, and by described load current being sampled the described load current of sensing.
11. power converter, comprise controller and at least one switching device, this controller is configured to, when the rate of change of load current does not surpass threshold level, the duty ratio of controlling described switching device according to the output voltage and the voltage control loop of sensing, and when the rate of change of described load current surpasses described threshold level, adjust the duty ratio of the described switching device of setting by described voltage control loop.
12. power converter as claimed in claim 11, wherein, described power converter is configured to described load current be sampled to described output voltage sampling and with second frequency with first frequency, and described second frequency is greater than described first frequency.
13. power converter as claimed in claim 11, wherein, described controller is configured to described output voltage sampling.
14. power converter as claimed in claim 13, wherein, described controller comprises and is used for sample circuit that described load current is sampled.
15. power converter as claimed in claim 14, wherein, described controller is a digitial controller.
16. power converter as claimed in claim 11 further comprises being used for sample circuit that described load current is sampled.
17. power converter as claimed in claim 11, wherein, described power converter is the DC-DC transducer.
18. power converter as claimed in claim 11, wherein, described power converter is the PFC boost converter.
19. power converter as claimed in claim 11, wherein, described power converter is voltage regulator module (VRM).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US99705107P | 2007-09-28 | 2007-09-28 | |
| US60/997,051 | 2007-09-28 | ||
| US12/236,798 | 2008-09-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101436826A true CN101436826A (en) | 2009-05-20 |
| CN101436826B CN101436826B (en) | 2016-12-14 |
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| CN102738770A (en) * | 2012-06-29 | 2012-10-17 | 中国北车集团大连机车车辆有限公司 | Unloading overvoltage control method for auxiliary power generation system of locomotive |
| CN104025708A (en) * | 2011-12-23 | 2014-09-03 | 赤多尼科两合股份有限公司 | Method and circuit arrangement for operating light-emitting means with a sudden load cariation |
| CN104737432A (en) * | 2012-08-27 | 2015-06-24 | 庞巴迪运输有限公司 | Adaptive soft switching control for power converter |
| CN105846659A (en) * | 2015-02-03 | 2016-08-10 | 通用电气公司 | Methods and systems for improving load transient response in isolated power converters |
| CN110679059A (en) * | 2017-05-26 | 2020-01-10 | 韦特里西提公司 | Multi-mode wireless power receiver control |
| CN112003465A (en) * | 2015-12-02 | 2020-11-27 | 雅达电子国际有限公司 | Power supply with single isolation device for feedback and fault detection |
| CN114896926A (en) * | 2022-07-12 | 2022-08-12 | 沐曦集成电路(上海)有限公司 | System for nanosecond level quick adjustment chip internal load |
| TWI778551B (en) * | 2021-03-23 | 2022-09-21 | 財團法人成大研究發展基金會 | Boost converter |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104025708A (en) * | 2011-12-23 | 2014-09-03 | 赤多尼科两合股份有限公司 | Method and circuit arrangement for operating light-emitting means with a sudden load cariation |
| CN102738770A (en) * | 2012-06-29 | 2012-10-17 | 中国北车集团大连机车车辆有限公司 | Unloading overvoltage control method for auxiliary power generation system of locomotive |
| CN102738770B (en) * | 2012-06-29 | 2014-06-04 | 中国北车集团大连机车车辆有限公司 | Unloading overvoltage control method for auxiliary power generation system of locomotive |
| CN104737432B (en) * | 2012-08-27 | 2018-08-07 | 庞巴迪运输有限公司 | Adaptive soft handover for power converter controls |
| US9698684B2 (en) | 2012-08-27 | 2017-07-04 | Bombardier Transportation Gmbh | Adaptive soft switching control for power converter |
| CN104737432A (en) * | 2012-08-27 | 2015-06-24 | 庞巴迪运输有限公司 | Adaptive soft switching control for power converter |
| CN105846659A (en) * | 2015-02-03 | 2016-08-10 | 通用电气公司 | Methods and systems for improving load transient response in isolated power converters |
| CN105846659B (en) * | 2015-02-03 | 2020-08-18 | Abb瑞士股份有限公司 | Method and system for improving load transient response in power conversion systems |
| CN112003465A (en) * | 2015-12-02 | 2020-11-27 | 雅达电子国际有限公司 | Power supply with single isolation device for feedback and fault detection |
| CN112003465B (en) * | 2015-12-02 | 2023-09-22 | 雅达电子国际有限公司 | Power supply with single isolation device for feedback and fault detection |
| CN110679059A (en) * | 2017-05-26 | 2020-01-10 | 韦特里西提公司 | Multi-mode wireless power receiver control |
| CN110679059B (en) * | 2017-05-26 | 2023-06-06 | 韦特里西提公司 | Multimode wireless power receiver control |
| TWI778551B (en) * | 2021-03-23 | 2022-09-21 | 財團法人成大研究發展基金會 | Boost converter |
| CN114896926A (en) * | 2022-07-12 | 2022-08-12 | 沐曦集成电路(上海)有限公司 | System for nanosecond level quick adjustment chip internal load |
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