CN107017794B - Isolated non-inductance electric heating source converting system and its method - Google Patents
Isolated non-inductance electric heating source converting system and its method Download PDFInfo
- Publication number
- CN107017794B CN107017794B CN201610059396.6A CN201610059396A CN107017794B CN 107017794 B CN107017794 B CN 107017794B CN 201610059396 A CN201610059396 A CN 201610059396A CN 107017794 B CN107017794 B CN 107017794B
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- Prior art keywords
- isolated
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- circuit
- electric heating
- heating source
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Induction Heating (AREA)
- Inverter Devices (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of isolated non-inductance electric heating source converting system and its methods.The isolated non-inductance electric heating source converting system includes secondary side control bus, is driven by isolated power-supply controller of electric, it includes oscillator and logic circuits, isolated power-supply controller of electric and multiple switch.At least one switching circuit is connected to isolated power bus.Isolated power-supply controller of electric can provide control switching signal at least one switching circuit, to drive isolated power bus.
Description
Technical field
The present invention relates to a kind of power conversion system, there is secondary side center to take out for especially a kind of sync driver and one kind
The equivalent isolated no inductance high bandwidth transformer of head coil.The invention further relates to the power conversion methods of this system.
Background technique
Many power conversion systems include DC/AC and the isolated charge conversion of DC/DC.In direct current filament drive
Using upper, power-switching circuit so is referred to as converter, and in exchange filament drive using upper, then referred to as inverter,
It has the cut-off bias for being connected to secondary side center tap coil.In this application, it is aobvious can to reduce vacuum for this cut-off bias
Show the noise of equipment.
Fig. 1 is an example of traditional power conversion system, in this example, has a transformer to be located at primary side confession
It answers between area and secondary side supply area, to reach voltage conversion and isolation.In a simple conversion circuit for filament drive,
Cut-off bias voltage 104 is connected to transformer by the center tap of second siding ring.At least a switch 102 is in oscillator 101
Control under quickly switch, so that electric current is flowed back to DC source, primary side by one end of transformer 103 by two alternate paths
The secondary side circuit that switches in of coil current alternating direction generates alternating current (AC)；In the application of certain vacuum display devices, Zener
(Zenor) diode is connected to center tap coil to form Dc bias.
Fig. 2 is the direct current output simple version of Fig. 1, in this version, additional a diode bridge 201 and a bulky capacitor
202 are connected to the second siding ring of transformer, to be rectified and be filtered to alternating current.
The shortcomings that present invention can overcome in the prior art and additional surcharge can be provided, the present invention can be to avoid
, the expensive and transformer of low bandwidth big using volume, Schottky (Shottky) diode of low pressure drop and electrolysis electricity not environmentally
Hold.
Summary of the invention
In view of above-mentioned the problems of the prior art, one of purpose of the invention is just to provide a kind of new-type circuit,
It uses multiple transistors, and can avoid the transformer using Schottky diode and large size, can isolate primary side and secondary
Lateral circuit, and by primary side circuit transmission electric power to secondary side circuit, to reduce power loss and component size.
A wherein mesh according to the present invention proposes a kind of isolated non-inductance electric heating source converting system, and being used for will be noninductive
Power supply is converted into the isolated power supply of ac/dc, this system may include isolated power bus, charge Transmission system and comprising more
The integrated circuit of a Metal Oxide Semiconductor Field Effect Transistor, wherein charge Transmission system includes isolated power bus control
Device processed；Oscillator can provide clock signal to isolated power bus controller；Delay time bus can provide delay
Time signal is controlled to isolated power bus controller with postponing multiple secondary side switches by isolated power bus controller
Opening time, wherein after multiple primary sides switch is closed, it is default that the opening time of multiple secondary side switches is delayed by one
Time interval；Bias bus can provide Dc bias and extremely load, the direct current with the center tap coil for being applied to transformer
Bias is equivalent；Primary side control bus can produce primary side control signal to multiple primary sides and switch；Secondary side control is total
Line can produce secondary side and control signal to multiple secondary side switches；An at least switching circuit, can be with isolated power bus
Coupling；An at least switch control bus can control the switching of an at least switching circuit and transmission charge total to isolated power supply
The charge Transmission system of line；And an at least bus switches, it may include an at least level deviator, to adjust control secondary side
The signal of switch.
A wherein purpose according to the present invention reintroduces a kind of isolated non-inductance electric heating source converting system, includes: outer circulation
Upper switch circuit and outer circulation lower switch circuit, the upper switch circuit of outer circulation can be coupled to the upper of isolated power bus
Side, the lower switch circuit of outer circulation can be coupled to the downside of isolated power bus, wherein the upper switch circuit of outer circulation and outer
The lower switch circuit of circulation may include simultaneous switching circuit, can be used for transmitting charge to isolated power bus；Interior circulation
The lower switch circuit of upper switch circuit and interior circulation, power inverter application in interior circulation upper switch circuit can be coupled to it is isolated
The downside of power bus, the lower switch circuit of interior circulation can be coupled to the upside of isolated power bus, wherein interior circulation it is upper
Switching circuit and the lower switch circuit of interior circulation include simultaneous switching circuit, can be used for transmitting charge to isolated power bus；
The upper switch circuit of interior circulation can be coupled to the upper of isolated power bus in power supply conversion and isolated data transmission applications
The lower switch circuit of side, interior circulation can be coupled to isolated power bus in power supply conversion and isolated data transmission applications
Downside, wherein the upper switch circuit of interior circulation and the lower switch circuit of interior circulation may include simultaneous switching circuit, can be used for transmitting
Charge is to isolated power bus；Wherein, when upper switch circuit and lower switch circuit are closed, it is applied to the upper of upper switch circuit
Voltage and the lower voltage for being applied to lower switch circuit be isolation, secondary side control bus circuit for control upper switch circuit and
Lower switch circuit.
Wherein, the upper voltage for being applied to upper switch circuit and the lower voltage for being applied to lower switch circuit are synchronous；This electricity
Road may include at least one bootstrapping level converter, and offset logic level is to secondary side control bus level, to control upper switch
The switching of circuit and lower switch circuit.
A further object according to the present invention reintroduces a kind of isolated non-inductance electric heating source conversion method, can be used for isolated
Non-inductance electric heating source converting system.The method may include the following steps: exchange and direct current charge Transmission system are realized using Two-way Cycle,
Wherein the upper switch circuit of outer circulation can be coupled to the upside of isolated power bus, and the lower switch circuit of outer circulation can be coupled to
The downside of isolated power bus, wherein the upper switch circuit of outer circulation and the lower switch circuit of outer circulation may include synchronizing out
Powered-down road can be used for transmitting charge to isolated power bus；In power inverter application, the upper switch circuit of interior circulation can coupling
It is bonded to the downside of isolated power bus, and the lower switch circuit of interior circulation can be coupled to the upside of isolated power bus,
In, the lower switch circuit of interior circulation and the upper switch circuit of interior circulation may include simultaneous switching circuit, can be used for transmitting charge extremely
Isolated power bus；Simple subprogram then exportable pulsating direct current；In power supply conversion and isolated data transmission applications, inside follow
The upper switch circuit of ring can be coupled to the upside of isolated power bus, and the lower switch circuit of interior circulation can be coupled to it is isolated
The downside of power bus, wherein the lower switch circuit of interior circulation and the upper switch circuit of interior circulation may include simultaneous switching circuit,
It can be used for transmitting charge to isolated power bus；It is applied to the upper voltage of upper switch circuit and is applied under lower switch circuit
Voltage is isolated with primary side；An at least switch control bus is provided, may include level off-centre circuit with total according to offset voltage
Line current potential is come with deviating primary side reference switch control bus to the level of secondary side switches control bus；And provide at least one
Resistor chain is connected to primary side power-cycled, and it includes an at least switch control buses, and the instruction for receiving I2C decoder comes
Change whole partial pressure resistance value, and then changes the voltage value of primary side and secondary side.
Additional feature and advantage can technology through the invention realize, and present invention other embodiments described herein
And viewpoint should all cover in the invention of opinion.
Subsequent narration and relevant schema through the invention, present invention others features and advantage are by the apparent of change
It is illustrated.
Detailed description of the invention
Fig. 1 is the schematic diagram of an embodiment of traditional power supply change-over device；
Fig. 2 is the schematic diagram of another embodiment of traditional power supply change-over device；
Fig. 3 is the schematic diagram of an embodiment of isolated non-inductance electric heating source converting system provided by the invention, be can provide
Exchange output and pulsating direct current output；
Fig. 4 is the mode chart of the circuit of Fig. 6；
Fig. 5 is the schematic diagram of another embodiment of isolated non-inductance electric heating source converting system provided by the invention, can be mentioned
For synchronous direct current output；
Fig. 6 is the digital isolator signal of another embodiment of isolated non-inductance electric heating source converting system provided by the invention
Figure can provide synchronous direct current output and data transmission；
Fig. 7 is the digital isolator signal of another embodiment of isolated non-inductance electric heating source converting system provided by the invention
Figure changes the value of power-cycled as dynamic control compensation output.
Description of symbols: 102- switch；103- transformer；104- cut-off bias voltage；201- diode bridge；202- is big
Capacitor；30,50,60, the isolated non-inductance electric heating source converting system of 70-；301, the isolated power bus of 302-；311,511,611-
Oscillator and logic circuit；312,512, the isolated power bus controller of 612-；321,322,323,324,521,522,
523,524,621,622,623,624- primary side switch；326,327,328,329,526,527,528,529,626,627,
628,629- secondary side switches；351,352,551,552,592,651,652- form-factor control capacitor；371,571- is recycled
Power supply；381,581,681- secondary side control bus；382,582,682- delay time bus；383,583,683- bias is total
Line；384,584,684- primary side control bus；391,591,601- load；The isolated level deviator of 602-；701,702-
Resistance；703-I2C decoder；704- power supply；S- source electrode；D- drain；G- gate；D1, D2- diode.
Specific embodiment
Hereinafter with reference to correlative type, illustrate according to isolated non-inductance electric heating source converting system provided by the invention and its method
Embodiment, to make to be easy to understand, similar elements in following embodiments are illustrated with identical symbology.
The signal of an embodiment of isolated non-inductance electric heating source converting system provided by the invention has been illustrated in Fig. 3
Figure can provide exchange output.This isolated non-inductance electric heating source converting system 30 may include isolated power bus 301 and 302,
Charge Transmission system and integrated circuit comprising multiple Metal Oxide Semiconductor Field Effect Transistor, wherein charge Transmission system
It may include isolated power bus controller 312, oscillator and logic circuit 311, delay time bus 382, bias bus
383, primary side control bus 384, secondary side control bus 381, at least a switching circuit, an at least switch control bus and extremely
Few bus switches.Oscillator and logic circuit 311 can provide clock signal to isolated power bus controller 312.Delay
Time BUS 382 can provide delay time signal to isolated power bus controller 312, to postpone multiple secondary side switches
326,327,328,329 opening time controlled by isolated power bus controller 312, wherein switched in multiple primary sides
321,322,323,324 be closed after, it is default that the opening time of multiple secondary side switches 326,327,328,329 can be delayed by one
Time interval.Bias bus can provide Dc bias to load 391.Primary side control bus 384 can produce primary side control letter
Number to multiple primary side switch 321,322,323,324.Secondary side control bus 381 can produce secondary side control signal and extremely should
Multiple secondary side switches 326,327,328,329.Switch control bus can control switching and the transmission electricity of an at least switching circuit
Lotus to isolated power bus 301,302 charge Transmission system.An at least bus switches may include an at least level deviator,
Its adjustable signal is with the operation of the multiple secondary side switches 326,327,328,329 of benefit.
As shown in figure 3, oscillator and logic circuit 311 generate the phase frequency of two tool delay times, it can reduce and pass through
Distortion is worn, primary side switchs and be biased to equivalent center tap coil.In phase 1, power-cycled 371 generate voltage via
Primary side switch 321,322 is imported into form-factor control capacitor 351, and form-factor control capacitor 352 then directly passes through two
Charge is isolated to output loading 391 in the injection of secondary side switches 329,328 that secondary side control bus 381 controls.
As shown in figure 3, directly being opened in the alternate path that secondary side control bus 381 controls by secondary side in phase 2
Pass 326,327, the form-factor control injection of capacitor 351 isolation Charged Couple to output loading 391, and power-cycled 371 generates
Charge via primary side switch 323,324 be imported into form-factor control capacitor 352.Via interior circulation and outer circulation electric current side
To be alternately produced alternating current to load 391.Output rms voltage be the switch operating period, capacitor, input voltage, load and
The function of the conduction resistance value of transistor.
Isolation charge transmission is that alternately transmission is coupled to load by isolation waveform factor controlling capacitor 351,352, one
It is pile warp holding capacitor in a little embodiments.
In one embodiment, if charge output is minimum, isolated non-inductance electric heating source converting system 30 can use high pressure gold
Oxide-semiconductor 2M integrated circuit manufacture process (HV MOS 2MIC foundry process) is fabricated, isolated non-inductance electric heating source
Converting system 30 includes that form-factor controls capacitor.Maximum isolation output is limited by the maximum junction breakdown voltage of this processing procedure
System.P-type MOS transistor is used for primary side switch 321,323 and secondary side switches 326,328, if utilizing other bootstrappings
Method then can use the substitution of N-type MOS transistor.N-type MOS transistor is for primary side switch 322,324 and secondary
Side switch 327,329.N type buried layer (NBL layer) is for keeping isolation.
It needs in the secondary side switches 326,327,328,329 of the secondary side control bus 381 of isolation by isolated power supply
The control pulse of bus 301,302 drives.The level of the executable ground connection pulse of one isolated power-supply controller of electric 312 is deviated to control
The pulse of secondary side control bus processed.There is no electric current to flow through between primary side unbalanced circuit and secondary side balancing circuitry.
The present embodiment comprises the steps of
Exchange and direct current charge Transmission system are realized using Two-way Cycle, wherein the upper switch circuit of outer circulation can be coupled to
The upside of isolated power bus, the lower switch circuit of outer circulation can be coupled to the downside of isolated power bus, wherein follow outside
The upper switch circuit of ring and the lower switch circuit of outer circulation may include simultaneous switching circuit, can be used for transmitting charge to isolated
Power bus；In power inverter application, the upper switch circuit of interior circulation can be coupled to the downside of isolated power bus, and interior
The lower switch circuit of circulation can be coupled to the upside of isolated power bus, wherein the lower switch circuit of interior circulation and interior circulation
Upper switch circuit may include simultaneous switching circuit, can be used for transmitting charge to isolated power bus；In power supply conversion and
In isolated data transmission applications, the upper switch circuit of interior circulation can be coupled to the upside of isolated power bus, and interior circulation
Lower switch circuit can be coupled to the downside of isolated power bus, wherein the lower switch circuit of interior circulation and interior circulation it is upper
Switching circuit may include simultaneous switching circuit, can be used for transmitting charge to isolated power bus.
The upper voltage for being applied to upper switch circuit is isolated with the lower voltage for being applied to lower switch circuit.
An at least switch control bus is provided, may include level off-centre circuit with according to offset voltage bus potential, with
Deviate the level of the first ground reference switch control bus to second switch control bus.
Fig. 4 is the waveform of the position current potential of the filament load of the circuit of Fig. 3.Current potential and the transformer center of load centre point
The current potential of tapped coil is equal.In order to for example, the voltage waveform and tool of isolated non-inductance electric heating source converting system 30 are central
Tap is simultaneously equivalent with the transformer of bias connection.
Fig. 5 is the schematic diagram of an embodiment of isolated non-inductance electric heating source converting system provided by the invention, is prolonged by Fig. 3
It stretches.As shown in figure 5, form-factor controls capacitor 552 via secondary side switches 528,529 and via secondary in phase 1
The interior circulation coupling injection isolation charge that side control bus 581 controls is to output loading 591, and circuit is switched via primary side
521, charge to the form-factor of 522 generations for drawing power-cycled 571 controls capacitor 551.In phase 2, circuit is via one
Ground connection charge to the form-factor that secondary side switch 523,524 draws the generation of power-cycled 571 controls capacitor 552, and form-factor
The coupling injection isolation charge of secondary side switches 526,527 that control capacitor 552 is controlled via secondary side control bus 581 extremely exports
Load 591.Form-factor control capacitor 592 is for filtering switching noise.By interior circulation and the phase Tongfang of the electric current of outer circulation
To direct current is generated to load 591, it is used to synchronize direct current transducer application.
As shown in fig. 6, it joined additional variation in the embodiment of isolated non-inductance electric heating source converting system 50,
Comprising interrupting the isolation of the formed circulation of power circuit and there is the data transfer path of high impedance relative to other circuit units.
Due to having interrupted circulation, noise voltage is across isolation barrier, rather than in receiving end or more sensitive element.
As shown in fig. 7, it joined additional variation in the embodiment of isolated non-inductance electric heating source converting system 30, in
Such as AMVFD in high-precision power application, determine that charge transmits virtual value by feedback input power 704, and by built-in I2C decoder
The communications protocol such as 703 change power supply feedback resistance 702 to change the value of power-cycled 371, control compensation output as dynamic.
The foregoing is merely illustratives, rather than are restricted.It is other any without departing from spirit and scope of the invention, and it is right
Its equivalent modifications or change for carrying out should be contained in this case scope of the claims.
Claims (7)
1. a kind of isolated non-inductance electric heating source converting system, for noninductive power supply to be converted into the isolated electricity of ac/dc
Source it includes isolated power bus, charge Transmission system and includes multiple Metal Oxide Semiconductor Field Effect Transistor
Integrated circuit, which is characterized in that charge Transmission system includes:
Isolated power bus controller；
Oscillator, for providing clock signal to isolated power bus controller；
Delay time bus, for providing delay time signal to isolated power bus controller, to postpone multiple secondary sides
Switch the opening time controlled by isolated power bus controller, wherein after multiple primary sides switch is closed, multiple two
Secondary side switches on the time and is delayed by a preset time section；
Bias bus extremely loads, the Dc bias with the center tap coil for being applied to transformer for providing Dc bias
It is equivalent；
Primary side control bus is switched for generating primary side control signal to multiple primary sides；
Secondary side control bus controls signal to multiple secondary side switches for generating secondary side；
An at least switching circuit is coupled with isolated power bus；
An at least switch control bus, for controlling the switching of an at least switching circuit and transmitting charge to isolated power bus
Charge Transmission system；And
An at least bus switches include an at least level deviator, to adjust the signal of control secondary side switches.
2. isolated non-inductance electric heating source converting system according to claim 1, which is characterized in that an at least switching circuit packet
Containing an at least transistor type switching circuit, and voltage input includes to be input to the source electrode input of an at least transistor type switching circuit
Or drain input, primary side control signal and secondary side control signal include the lock for being input to an at least transistor type switching circuit
Pole input.
3. isolated non-inductance electric heating source converting system according to claim 2, which is characterized in that an at least switching circuit packet
Circuit containing upper switch and lower switch circuit；Upper switch circuit includes at least a P-type transistor circuit or N-type transistor circuit, under
Switching circuit includes an at least N-type transistor circuit, and upper switch circuit and lower switch circuit constitute charge and transmit loop circuit.
4. isolated non-inductance electric heating source converting system according to claim 1, which is characterized in that an at least switching circuit packet
Deviator containing level, to deviate primary side control bus according to offset voltage bus potential to the position of secondary side control bus
It is quasi-.
5. isolated non-inductance electric heating source converting system according to claim 1, which is characterized in that power conversion system includes
Charge Transmission system and isolated data transmission system, and wherein the charge of device is exported across isolated power bus.
6. isolated non-inductance electric heating source converting system according to claim 1, which is characterized in that charge Transmission system includes
At least one form-factor controls capacitor, which controls capacitor, and alternately directly transmission charge extremely exports.
7. isolated non-inductance electric heating source converting system according to claim 1, which is characterized in that bias bus is via multiple
Switch crosses isolated power bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059396.6A CN107017794B (en) | 2016-01-28 | 2016-01-28 | Isolated non-inductance electric heating source converting system and its method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059396.6A CN107017794B (en) | 2016-01-28 | 2016-01-28 | Isolated non-inductance electric heating source converting system and its method |
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| Publication Number | Publication Date |
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| CN107017794A CN107017794A (en) | 2017-08-04 |
| CN107017794B true CN107017794B (en) | 2019-05-07 |
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| CN201610059396.6A Expired - Fee Related CN107017794B (en) | 2016-01-28 | 2016-01-28 | Isolated non-inductance electric heating source converting system and its method |
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| CN107678999A (en) * | 2017-10-25 | 2018-02-09 | 东莞博力威电池有限公司 | A kind of I2C isolation circuits |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5345376A (en) * | 1993-02-19 | 1994-09-06 | Tescom Corporation | Switching power supply with electronic isolation |
| CN1901341A (en) * | 2005-07-21 | 2007-01-24 | 陈真 | Alternative switch type power isolation circuit |
| GB2469124B (en) * | 2009-04-03 | 2013-10-30 | Thales Holdings Uk Plc | Power supply |
| CN105245121A (en) * | 2015-11-25 | 2016-01-13 | 中国科学院自动化研究所 | Rectifying circuit with bootstrap circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITVA20040026A1 (en) * | 2004-06-25 | 2004-09-25 | St Microelectronics Srl | CONTROL METHOD OF A CHARGE PUMP GENERATOR AND RELATED CHARGE PUMP GENERATOR |
-
2016
- 2016-01-28 CN CN201610059396.6A patent/CN107017794B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5345376A (en) * | 1993-02-19 | 1994-09-06 | Tescom Corporation | Switching power supply with electronic isolation |
| CN1901341A (en) * | 2005-07-21 | 2007-01-24 | 陈真 | Alternative switch type power isolation circuit |
| GB2469124B (en) * | 2009-04-03 | 2013-10-30 | Thales Holdings Uk Plc | Power supply |
| CN105245121A (en) * | 2015-11-25 | 2016-01-13 | 中国科学院自动化研究所 | Rectifying circuit with bootstrap circuit |
Non-Patent Citations (1)
| Title |
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| 新型半导体隔离式高功率因数开关电源;陶岑等;《电力自动化设备》;20070228;第27卷(第2期);第93-96页 * |
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