CN102739065A - Power supply with high efficiency and high power density - Google Patents
Power supply with high efficiency and high power density Download PDFInfo
- Publication number
- CN102739065A CN102739065A CN2011100808289A CN201110080828A CN102739065A CN 102739065 A CN102739065 A CN 102739065A CN 2011100808289 A CN2011100808289 A CN 2011100808289A CN 201110080828 A CN201110080828 A CN 201110080828A CN 102739065 A CN102739065 A CN 102739065A
- Authority
- CN
- China
- Prior art keywords
- power supply
- circuit
- control signal
- high efficiency
- power density
- 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
Images
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The invention relates to a power supply with high efficiency and high power density. The power supply comprises a pre-level topology circuit and a secondary topology circuit in series, and the power supply with high efficiency and high power density further comprises a switch module connected between the pre-level topology circuit and the secondary topology circuit. The switch module is used for connecting or breaking the pre-level topology circuit to short out or switch on the pre-level topology circuit based on a control signal. Through shorting out or switching on the pre-level topology circuit by the switch module, the power supply with high efficiency and high power density makes the pre-level topology circuit stop operating in some preset conditions to reduce loss and further improve the efficiency. While in some other preset conditions, operation of the pre-level topology circuit achieves the high power density, so that the high power density and the high efficiency are balanced.
Description
Technical field
The present invention relates to field of switch power, more particularly, relate to a kind of high efficiency high power density power supply.
Background technology
Along with the development of switch power technology, high frequencyization, high efficiency, high power density have become the development trend of Switching Power Supply.High frequencyization can effectively reduce the Switching Power Supply volume, yet the too high meeting of frequency brings the problem of switching tube loss increase, is unfavorable for improving the efficient of power supply.The crisscross parallel resonant circuit can satisfy the requirement of high frequencyization as a kind of special circuit topology, can reach higher conversion efficiency again, under the promotion of high efficiency development trend, by industry-wide adoption.
In order to realize high power density, this area usually adopts the buck translation circuit to add the crisscross parallel resonant circuit.This scheme can utilize the buck translation circuit to optimize the design of crisscross parallel resonant circuit, has also solved the problem of crisscross parallel resonant circuit in control.Simultaneously, the crisscross parallel resonant circuit can make that output current frequency doubles, and ripple current greatly reduces, and helps reducing of filter capacitor volume, thereby realizes the miniaturization of power volume, improves power density.But, increase the buck translation circuit and also can bring power loss, therefore the efficient of whole power supply is difficult to further raising.
Summary of the invention
The technical problem that the present invention will solve is that the power supply that comprises buck translation circuit and crisscross parallel resonant circuit to prior art is difficult to take into account simultaneously high power density and high efficiency defective, and a kind of high efficiency high power density power supply is provided.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of high efficiency high power density power supply; The prime topological circuit and the secondary topological circuit that comprise mutual series connection; Said high efficiency high power density power supply further comprises the handover module that is connected between said prime topological circuit and the secondary topological circuit, and said handover module is used for based on the control signal conducting or breaks off with short circuit or connect said prime topological circuit.
In high efficiency high power density power supply of the present invention, said prime topological circuit comprises buck translation circuit or boost type translation circuit; Said back level topological circuit comprises staggered half-bridge resonance circuit, staggered full-bridge resonant circuit or phase whole-bridging circuit.
In high efficiency high power density power supply of the present invention; Said high efficiency high power density power supply comprises the control signal generation module of communicating by letter and being connected with said handover module, and said control signal generation module is used to receive the power supply operating parameter setting and generates said control signal based on said power supply operating parameter setting.
In high efficiency high power density power supply of the present invention, said handover module comprises and the parallelly connected switching device of said prime topological circuit.
In high efficiency high power density power supply of the present invention, said prime topological circuit is the buck translation circuit, and said secondary topological circuit is the crisscross parallel resonant circuit; Said buck translation circuit and crisscross parallel resonant circuit are connected each other; Said handover module is connected between said buck translation circuit and the crisscross parallel resonant circuit, and said handover module is used for based on said control signal conducting or breaks off with short circuit or connect said buck translation circuit.
In high efficiency high power density power supply of the present invention; Said high efficiency high power density power supply comprises the control signal generation module of communicating by letter and being connected with said handover module, and said control signal generation module is used to receive the power supply operating parameter setting and generates said control signal based on said power supply operating parameter setting.
In high efficiency high power density power supply of the present invention, said handover module comprises and the parallelly connected switching device of said buck translation circuit.
In high efficiency high power density power supply of the present invention; Said handover module comprises mos field effect transistor; The grid of said mos field effect transistor is connected to said control signal generation module, and the source electrode of said mos field effect transistor is connected respectively to the input and the output of said buck translation circuit with draining.
In high efficiency high power density power supply of the present invention; Said handover module comprises relay; The control end of said relay is connected to said control signal generation module, and the moving contact of said relay and fixed contact are connected respectively to the input and the output of said buck translation circuit.
In high efficiency high power density power supply of the present invention; Said handover module comprises triode; The base stage of said triode is connected to said control signal generation module, and the emitter and collector of said triode is connected respectively to the input and the output of said buck translation circuit.
The high efficiency high power density power supply of embodiment of the present invention; Through the handover module short circuit or connect said prime topological circuit; Make that the prime topological circuit is not worked to reduce the wastage and further to raise the efficiency under some imposes a condition; And realize high power density, thereby take into account the high power density and the high efficiency of power supply simultaneously in other prime topological circuit work that impose a condition.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the logic diagram of first embodiment of high efficiency high power density power supply of the present invention;
Fig. 2 is the logic diagram of second embodiment of high efficiency high power density power supply of the present invention;
Fig. 3 is the circuit diagram of second embodiment of high efficiency high power density power supply of the present invention;
Fig. 4 is the circuit diagram of handover module of the 3rd embodiment of high efficiency high power density power supply of the present invention;
Fig. 5 is the circuit diagram of handover module of the 4th embodiment of high efficiency high power density power supply of the present invention;
Fig. 6 is the logic diagram of the 5th embodiment of high efficiency high power density power supply of the present invention.
Embodiment
As shown in Figure 1, high efficiency high power density power supply of the present invention comprises buck translation circuit 100, crisscross parallel resonant circuit 200 and handover module 300.Wherein said buck translation circuit 100 is connected with crisscross parallel resonant circuit 200 each other, and said handover module 300 is connected between said buck translation circuit 100 and the crisscross parallel resonant circuit 200.Said handover module 300 receives control signals, and based on this control signal conducting or disconnection, thus short circuit or connect said buck translation circuit 100.
Under power supply need be operated in the situation of nucleus when semi-load, efficient was higher (for example need), send the control signal of its conductings of control for handover module 300.Buck translation circuit 100 is by short circuit, and input voltage is applied directly to the input of crisscross parallel resonant circuit 200, only crisscross parallel resonant circuit 200 work, and can reduce the loss of power supply this moment, further raises the efficiency.When power work need be operated in non-core zone (when for example needing high pressure, low pressure output or underloading, heavy duty), handover module 300 receives the control signal of its disconnection of control, thereby connects buck translation circuit 100.Those skilled in the art know, can adopt special control signal generation module (embodiment shown in Fig. 2) to generate this control signal, generate this control signal thereby also can adopt artificial mode to trigger handover module 300.At this moment, input voltage is applied to the input of buck translation circuit 100, and buck translation circuit 100 is with crisscross parallel resonant circuit 200 co-operation and then satisfy power supply and work under various conditions, realizes high power density.
In the present embodiment, said handover module 300 can be any under the control signal effect, the buck translation circuit is broken off circuit, module or the switching device of perhaps conducting.For example, in a simplified embodiment of the present invention, said handover module 300 even can be a switch.The control signal of controlling said handover module can be generated by other modules inside and outside the power supply automatically, also can trigger from user's active.For example, this handover module 300 is switches parallelly connected with buck translation circuit 100.When the user needs power work at nucleus, close switch, this moment, buck translation circuit 100 was by short circuit.When the user needs power work in non-core zone, cut-off switch, buck translation circuit 100 is connected in circuit at this moment.According to instruction of the present invention; Those skilled in the art can adopt variety of way to generate various control signals, select suitable device to constitute handover module; And use these various control signals to control the conducting or the disconnection of handover modules; Therefore, the present invention does not receive the concrete structure of handover module and the restriction of realization.
Fig. 2 is the logic diagram of second embodiment of high efficiency high power density power supply of the present invention.As shown in Figure 2, high efficiency high power density power supply of the present invention comprises buck translation circuit 100, crisscross parallel resonant circuit 200, handover module 300 and control signal generation module 400.Wherein said buck translation circuit 100 is connected with crisscross parallel resonant circuit 200 each other, and said handover module 300 is parallelly connected with said buck translation circuit 100.Control signal generation module 400 is connected with said handover module 300 communications.Said control signal generation module 400 receives the power supply operating parameter setting and generates control signal based on said power supply operating parameter setting.Said handover module 300 receives control signals, and based on this control signal conducting or disconnection, thus short circuit or connect said buck translation circuit 100.
Those skilled in the art know; Said control signal generation module 400 can directly receive the power supply operating parameter setting of user's input; Also can from memory, receive this power supply operating parameter setting, also can from the administration module that is specifically designed to managing electrical power operation or control module, obtain.This power supply operating parameter setting can comprise about the information of power work in nucleus or non-core zone.Certainly, this power supply operating parameter setting can also comprise other information.At this, the present invention does not receive the source of power supply operating parameter setting and the restriction of particular content.Certainly, those skilled in the art know, in simplified embodiment of the present invention, also can not adopt control signal generation module 400, but directly trigger handover module.
For example, when control signal generation module 400 receives when setting power work to the power supply operating parameter setting of nucleus, generate a control signal.Thereby this control signal is used to control the said buck translation circuit 100 of handover module conducting short circuit.When control signal generation module 400 receives when setting power work to the power supply operating parameter setting in non-core zone, generate another control signal.Thereby breaking off, this control signal control handover module connects said buck translation circuit 100.As previously mentioned, in the present embodiment, said handover module 300 can be any under the control signal effect, the buck translation circuit is broken off circuit, module or the switching device of perhaps conducting.
Fig. 3 is the circuit diagram of second embodiment of high efficiency high power density power supply of the present invention.Fig. 4 illustrates, when handover module 300 is the embodiment of mos field effect transistor.Can know that referring to Fig. 3 and 4 high efficiency high power density power supply of the present invention comprises buck translation circuit 100, crisscross parallel resonant circuit 200, handover module 300 and control signal generation module 400.Wherein this handover module 300 is a mos field effect transistor.In this embodiment; The first input end of buck translation circuit 100 and the second input A are connected respectively to its front stage circuits, and first output of said buck translation circuit 100 and the second output B are connected the first input end and second input of said crisscross parallel resonant circuit 200 respectively.The grid of said mos field effect transistor is connected to said control signal generation module 400 to receive control signal.The source electrode of said mos field effect transistor is connected respectively to the second input A and the second output B of said buck translation circuit with draining.
In the embodiment show in figure 4, when control signal generation module 400 receives when setting power work to the power supply operating parameter setting in non-core zone, generate high-level control signal.The grid of said mos field effect transistor receives said high level signal, and then the said mos field effect transistor of conducting.Then, buck translation circuit 100 is by short circuit, and only crisscross parallel resonant circuit 200 work can reduce the loss of power supply at this moment, further raise the efficiency.Control signal generation module 400 is receiving when setting power work to the power supply operating parameter setting of nucleus; Generate the low level control signal; The grid of said mos field effect transistor receives said low level signal; Said mos field effect transistor ends, and buck translation circuit 100 is with crisscross parallel resonant circuit 200 co-operation and then satisfy power supply and work under various conditions, realizes high power density.In the embodiment show in figure 4, also can the control signal of low level control signal as the said mos field effect transistor of conducting be controlled high level as the control signal by said mos field effect transistor.Those skilled in the art can select according to actual conditions.
Fig. 5 illustrates, and comprises the embodiment of relay when handover module 300.Can know that referring to Fig. 3 and 5 high efficiency high power density power supply of the present invention comprises buck translation circuit 100, crisscross parallel resonant circuit 200, handover module 300 and control signal generation module 400.Wherein this handover module 300 is a relay.In this embodiment; The first input end of buck translation circuit 100 and the second input A are connected respectively to its front stage circuits, and first output of said buck translation circuit 100 and the second output B are connected the first input end and second input of said crisscross parallel resonant circuit 200 respectively.The control end of said relay is connected to said control signal generation module 400, and the moving contact of said relay and fixed contact are connected respectively to the second input A and the second output B of said buck translation circuit.
In the embodiment show in figure 5, when control signal generation module 400 receives when setting power work to the power supply operating parameter setting in non-core zone, generate high-level control signal.The control end of said relay receives said high level signal, relay closes.Then, buck translation circuit 100 is by short circuit, and only crisscross parallel resonant circuit 200 work can reduce the loss of power supply at this moment, further raise the efficiency.When control signal generation module 400 receives when setting power work to the power supply operating parameter setting of nucleus; Generate the low level control signal; The control end of said relay receives said low level signal; Said relay breaks off, and buck translation circuit 100 is with crisscross parallel resonant circuit 200 co-operation and then satisfy power supply and work under various conditions, realizes high power density.In the embodiment shown in Fig. 5 of the present invention, also can be with the control signal of low level control signal, with the control signal of high level control as the said relay of disconnection as the said relay of closure.Those skilled in the art can select according to actual conditions.
In other embodiments of the invention, said handover module 300 can also comprise other switching devices.Such as, it can comprise triode, and the base stage of said triode is connected to said control signal generation module 400, and the emitter and collector of said triode is connected respectively to the second input A and the second output B of said buck translation circuit.Certainly, those skilled in the art can also select other switching device as required, as long as can realize the present invention.
The high efficiency high power density power supply of embodiment of the present invention through increasing a handover module, has remedied the buck translation circuit and the deficiency of crisscross parallel resonant circuit on efficient of two-stage structure, thereby has realized the high efficiency high power density.For example, 3kW is an example with output, though the highest 99.5% efficient when the buck translation circuit is accomplished to be operated in nucleus, so at the rare 7.5W of being lost to of buck translation circuit.Utilize handover module, can reduce this loss, thereby raise the efficiency.Loss reduces 2W, and then efficient improves 0.13%; Loss reduces 4W, and then efficient improves 0.27%; Loss reduces 5W, and then efficient improves 0.33%; Loss reduces 6W, and then efficient improves 0.4%.
Those skilled in the art know, thereby above-mentioned short circuit front stage circuits improves the method for power-efficient, not only is applicable to buck translation circuit and crisscross parallel resonant circuit, and any two-stage circuit can be used the present invention.
Thus, Fig. 6 discloses the 5th embodiment of high efficiency high power density power supply of the present invention.As shown in Figure 6, high efficiency high power density power supply of the present invention comprises prime topological circuit 610, secondary topological circuit 620 and the handover module 630 of mutual series connection.Wherein said prime topological circuit 610 is connected with secondary topological circuit 620 each other, and said handover module 630 is connected between said prime topological circuit 610 and the secondary topological circuit 620.Said handover module 630 receives control signals, and based on this control signal conducting or disconnection, thus short circuit or connect said prime topological circuit 610.
In one embodiment of the invention, said prime topological circuit comprises buck translation circuit or boost type translation circuit; Said back level topological circuit comprises staggered half-bridge resonance circuit, staggered full-bridge resonant circuit or phase whole-bridging circuit.Said handover module comprises and the parallelly connected switching device of said prime topological circuit.Each embodiment of said handover module can be with reference to the embodiment shown in above Fig. 1-5.In the present embodiment, said handover module 630 can be any under the control signal effect, the buck translation circuit is broken off circuit, module or the switching device of perhaps conducting.For example, in a simplified embodiment of the present invention, said handover module 630 even can be a switch.The control signal of controlling said handover module can be generated by other modules inside and outside the power supply automatically, also can trigger from user's active.In a preferred embodiment of the invention, this handover module 630 is a mos field effect transistor.In another preferred embodiment of the present invention, this handover module 630 is a relay.In other embodiments of the invention, said handover module 630 can also comprise other switching devices.Such as, it can comprise triode.Certainly, those skilled in the art can also select other switching device as required, as long as can realize the present invention.
In a preferred embodiment of the invention, said high efficiency high power density power supply also can comprise the control signal generation module, and said control signal generation module is communicated by letter with said handover module and is connected, and is used to receive the power supply operating parameter setting.And the control signal generation module further generates the control signal generation module of said control signal based on said power supply operating parameter setting.Each functions of components of high efficiency high power density power supply shown in Fig. 6 of the present invention and implementation can be with reference to embodiment among Fig. 1-5.
Though the present invention describes through specific embodiment, it will be appreciated by those skilled in the art that, without departing from the present invention, can also carry out various conversion and be equal to alternative the present invention.Therefore, the present invention is not limited to disclosed specific embodiment, and should comprise the whole execution modes that fall in the claim scope of the present invention.
Claims (10)
1. high efficiency high power density power supply; The prime topological circuit and the secondary topological circuit that comprise mutual series connection; It is characterized in that; Said high efficiency high power density power supply further comprises the handover module that is connected between said prime topological circuit and the secondary topological circuit, and said handover module is used for based on the control signal conducting or breaks off with short circuit or connect said prime topological circuit.
2. high efficiency high power density power supply according to claim 1 is characterized in that said prime topological circuit comprises buck translation circuit or boost type translation circuit; Said back level topological circuit comprises staggered half-bridge resonance circuit, staggered full-bridge resonant circuit or phase whole-bridging circuit.
3. high efficiency high power density power supply according to claim 1 and 2; It is characterized in that; Said high efficiency high power density power supply comprises the control signal generation module of communicating by letter and being connected with said handover module, and said control signal generation module is used to receive the power supply operating parameter setting and generates said control signal based on said power supply operating parameter setting.
4. high efficiency high power density power supply according to claim 1 and 2 is characterized in that, said handover module comprises and the parallelly connected switching device of said prime topological circuit.
5. high efficiency high power density power supply according to claim 1 is characterized in that said prime topological circuit is the buck translation circuit, and said secondary topological circuit is the crisscross parallel resonant circuit; Said buck translation circuit and crisscross parallel resonant circuit are connected each other; Said handover module is connected between said buck translation circuit and the crisscross parallel resonant circuit, and said handover module is used for based on said control signal conducting or breaks off with short circuit or connect said buck translation circuit.
6. high efficiency high power density power supply according to claim 5; It is characterized in that; Said high efficiency high power density power supply comprises the control signal generation module of communicating by letter and being connected with said handover module, and said control signal generation module is used to receive the power supply operating parameter setting and generates said control signal based on said power supply operating parameter setting.
7. high efficiency high power density power supply according to claim 5 is characterized in that, said handover module comprises and the parallelly connected switching device of said buck translation circuit.
8. high efficiency high power density power supply according to claim 7; It is characterized in that; Said handover module comprises mos field effect transistor; The grid of said mos field effect transistor is connected to said control signal generation module, and the source electrode of said mos field effect transistor is connected respectively to the input and the output of said buck translation circuit with draining.
9. high efficiency high power density power supply according to claim 7; It is characterized in that; Said handover module comprises relay; The control end of said relay is connected to said control signal generation module, and the moving contact of said relay and fixed contact are connected respectively to the input and the output of said buck translation circuit.
10. high efficiency high power density power supply according to claim 7; It is characterized in that; Said handover module comprises triode; The base stage of said triode is connected to said control signal generation module, and the emitter and collector of said triode is connected respectively to the input and the output of said buck translation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110080828.9A CN102739065B (en) | 2011-03-31 | 2011-03-31 | A kind of high power density power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110080828.9A CN102739065B (en) | 2011-03-31 | 2011-03-31 | A kind of high power density power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102739065A true CN102739065A (en) | 2012-10-17 |
| CN102739065B CN102739065B (en) | 2016-01-06 |
Family
ID=46994010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110080828.9A Active CN102739065B (en) | 2011-03-31 | 2011-03-31 | A kind of high power density power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102739065B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109586572A (en) * | 2017-09-21 | 2019-04-05 | 联发科技股份有限公司 | Converter and power management integrated circuit system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5515257A (en) * | 1993-09-17 | 1996-05-07 | Toko, Inc. | AC-DC converter |
| JP2000050402A (en) * | 1998-08-03 | 2000-02-18 | Denso Corp | Power source unit for hybrid electric automobile |
| CN2554861Y (en) * | 2001-12-05 | 2003-06-04 | 周仕祥 | AC/DC switch converter with high-efficient and low no-loud loss |
| CN101197540A (en) * | 2007-12-11 | 2008-06-11 | 艾默生网络能源有限公司 | Dc converter |
| CN202043042U (en) * | 2011-03-31 | 2011-11-16 | 艾默生网络能源系统北美公司 | Power supply with high efficiency and high-power density |
-
2011
- 2011-03-31 CN CN201110080828.9A patent/CN102739065B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5515257A (en) * | 1993-09-17 | 1996-05-07 | Toko, Inc. | AC-DC converter |
| JP2000050402A (en) * | 1998-08-03 | 2000-02-18 | Denso Corp | Power source unit for hybrid electric automobile |
| CN2554861Y (en) * | 2001-12-05 | 2003-06-04 | 周仕祥 | AC/DC switch converter with high-efficient and low no-loud loss |
| CN101197540A (en) * | 2007-12-11 | 2008-06-11 | 艾默生网络能源有限公司 | Dc converter |
| CN202043042U (en) * | 2011-03-31 | 2011-11-16 | 艾默生网络能源系统北美公司 | Power supply with high efficiency and high-power density |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109586572A (en) * | 2017-09-21 | 2019-04-05 | 联发科技股份有限公司 | Converter and power management integrated circuit system |
| CN109586572B (en) * | 2017-09-21 | 2020-11-13 | 联发科技股份有限公司 | Converter and power management integrated circuit system |
| US11095222B2 (en) | 2017-09-21 | 2021-08-17 | Mediatek Inc. | High efficiency converter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102739065B (en) | 2016-01-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102118909B (en) | Boost circuit for driving light emitting diode | |
| CN103379701B (en) | A kind of LED drive circuit and LED lamp | |
| CN101789700A (en) | Control circuit and method of a resonance type power converter | |
| CN203368326U (en) | Boost circuit and LED driving power supply | |
| CN101976940A (en) | Drive bootstrap circuit for switching tube of switching power supply converter | |
| CN110719035A (en) | Topological structure of single-stage DAB-LLC hybrid bidirectional DC-DC converter | |
| CN110034681B (en) | Staggered parallel ZVZCS high-boost DC/DC converter | |
| CN111786553A (en) | Efficient bidirectional four-pipe BUCK-BOOST converter | |
| CN202043042U (en) | Power supply with high efficiency and high-power density | |
| WO2024099254A1 (en) | Variable-frequency driving circuit and cooking apparatus | |
| CN114123763A (en) | Low-ripple soft switching Cuk converter circuit and modulation method | |
| CN102761257A (en) | Boost converter and control method thereof | |
| CN104300780B (en) | Large power non-isolation DC/DC soft switching circuit | |
| CN103187870B (en) | Buck conversion circuit | |
| CN209497471U (en) | A kind of power supply system | |
| CN105656176A (en) | High-reliability power switching circuit and electronic device | |
| CN102739065B (en) | A kind of high power density power supply | |
| CN104010148A (en) | Power circuit and television | |
| CN101471605B (en) | Power supply circuit | |
| CN201869101U (en) | Isolating drive circuit | |
| CN103187746A (en) | Uninterruptible power supply topology | |
| CN208754200U (en) | A kind of negative pressure open circuit turn-off type CMOS radio frequency rectifier | |
| CN203812128U (en) | High-efficiency voltage-drop-type switch regulator | |
| CN202737742U (en) | DC-DC booster converter | |
| CN105811948A (en) | Switching circuit, switching method and medical equipment |
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 | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 1510, Kansas Avenue, lureen, Ohio, USA Patentee after: Walteff energy systems company Address before: The United States of Ohio city F Lorain Street No. 1122 Patentee before: Emerson Network Power Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211228 Address after: Ohio, USA Patentee after: Dimension Corp. Address before: No. 1510, Kansas Avenue, lureen, Ohio, USA Patentee before: VERTIV ENERGY SYSTEMS, Inc. |