CN102570816B - Synchronous rectifier bi-directional current sensor - Google Patents
Synchronous rectifier bi-directional current sensor Download PDFInfo
- Publication number
- CN102570816B CN102570816B CN201110408457.2A CN201110408457A CN102570816B CN 102570816 B CN102570816 B CN 102570816B CN 201110408457 A CN201110408457 A CN 201110408457A CN 102570816 B CN102570816 B CN 102570816B
- Authority
- CN
- China
- Prior art keywords
- signal
- synchronous rectifier
- current
- commutation
- terminal
- 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.)
- Active
Links
- 230000001360 synchronised Effects 0.000 title claims abstract description 107
- 230000002457 bidirectional Effects 0.000 claims abstract description 41
- 238000011084 recovery Methods 0.000 claims abstract description 40
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 239000000411 inducer Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 13
- 230000011664 signaling Effects 0.000 claims description 7
- 230000005669 field effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims 2
- 238000000034 method Methods 0.000 description 55
- 238000010586 diagram Methods 0.000 description 21
- 230000005611 electricity Effects 0.000 description 15
- 239000003990 capacitor Substances 0.000 description 8
- 238000004804 winding Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000001808 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000036772 blood pressure Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000670 limiting Effects 0.000 description 2
- 230000002829 reduced Effects 0.000 description 2
- 230000000717 retained Effects 0.000 description 2
- 230000003247 decreasing Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000036961 partial Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
Abstract
The present invention discloses the method and apparatus that a kind of bidirectional current for synchronous rectifier bi-directional converter system senses.Measure the first electric current by the first synchronous rectifier via the first transformer, thus the first signal is provided.Measure the second electric current by the second forced synchronism commutator via the second transformer, thus secondary signal is provided.Respectively the first signal and secondary signal are carried out DC recovery, thus provides a DC to recover signal and the 2nd DC recovery signal.First correcting current adds to a DC and recovers signal, thus produces the first corrected signal, and the second correcting current adds to the 2nd DC and recovers signal, thus produces the second corrected signal.First corrected signal and the second corrected signal are added, thus produce composite signal.
Description
Technical field
Embodiments of the present disclosure relate generally to voltage and current sensor.More specifically, these public affairs
The embodiment opened relates to the voltage and current sensor of bi-directional voltage transducer.
Background technology
In bi-directional voltage transducer, the electric current for each direction generally uses single voltage
Adjustor.Generally, two different current sense amplifier measurements stride across diverter (shunt)
Voltage.At least three significant problems associated with the method.First, with input path
The diverter of series connection introduces the biggest power attenuation.Such as, in 100A system, for
The voltage striding across diverter of 50mV, power dissipation (power dissipation) can be at 5W
Magnitude.Second, when the battery cell is charged, be may be about as electric discharge by the electric current of diverter
The 1/5 of electric current, and the voltage striding across diverter will only be 10mV.Due to switch adjuster
In (switching regulator) (wherein, power level radiation high-frequency noise) the least
Signal, the current sensor manufacturing accurately measurement electric current is extremely difficult.3rd, have non-
The wide-bandwidth amplifier meet Lingao radio-frequency radiation of the highest gain and high degree of accuracy and the spoke of conduction
According to.
Summary of the invention
The invention discloses the bidirectional current sensing side for synchronous rectifier bi-directional converter system
Method.Measure by the first forced commutation synchronous rectification via the first transformer (transformer)
First electric current of device (force commutated synchronous rectifier), thus provide
One signal.The second electricity by the second forced commutation synchronous rectifier is measured via the second transformer
Stream, thus secondary signal is provided.First signal and secondary signal are carried out DC recovery (DC
Resotored), thus provide a DC to recover signal and the 2nd DC and recover signal.First school
Positive current adds to a DC and recovers signal, thus provides the first corrected signal, the second school
Positive current adds to the 2nd DC and recovers signal, thus provides the second corrected signal.First school
The signal just crossed and the second corrected signal are added, thus provide composite signal.
By this way, it is provided that bidirectional current sensing circuit, it is signal processor, this signal
Processor is not sacrificed bandwidth or precision and is generated the copy of inductor current, as feedback signal or
Telemetered signal.Signal relatively large (order of magnitude of 1V) in circuit, therefore the amplifier of circuit increases
Benefit can be low.Therefore, by having the bandwidth of about 1mega-Hz and the input of several millivolts
The standard operational amplifier of offset voltage drift, it is possible to achieve the reasonable accuracy of inductor current is again
Existing.The power dissipation associated with circuit described here can not normally may be used than relatively low and not requirement
Special bias.
In an embodiment, the bidirectional current method for sensing bag of synchronous rectifier bi-directional converter system
Include via the first transformer measurement/sensing electric by the first of the first forced commutation synchronous rectifier
Stream, thus the first signal is provided.Via the second transformer measurement/sensing by the second forced commutation
Second electric current of synchronous rectifier, thus secondary signal is provided.Respectively to the first signal and second
Signal carries out DC recovery, thus provides a DC to recover signal and the 2nd DC recovery signal.
First correcting current adds to a DC and recovers signal, thus produces the first corrected signal,
And second correcting current add to the 2nd DC and recover signal, thus produce the second corrected letter
Number.First corrected signal and the second corrected signal are added, thus produce composite signal.
In another example, synchronous rectifier bi-directional current sensor system includes the first mutual inductance
Device, it may operate to sense the first electric current from the first synchronous rectifier, thus provides first
Signal.System farther includes the second transformer, and it may operate to sensing and synchronizes from second whole
Second electric current of stream device, thus secondary signal is provided；And DC recovers and summing amplifier electricity
Road.DC recovers and summing amplifier circuit includes DC restoring circuit and DC summing amplifier,
This DC restoring circuit may operate to the first signal and secondary signal are carried out DC recovery, thus
There is provided a DC to recover signal and the 2nd DC recovers signal.
DC summing amplifier includes the first add circuit and the second add circuit, the first addition electricity
Road may operate to that the first correcting current adds to a DC and recovers signal, thus produces the first school
The signal just crossed, it is extensive that the second add circuit may operate to that the second correcting current is added to the 2nd DC
Complex signal, thus produce the second corrected signal.DC summing amplifier farther includes to ask
With inverting amplifier and inverting amplifier, summation inverting amplifier may operate to correct first
Signal and the second corrected signal be added and amplify, thus produce composite signal, anti-phase
Amplifier may operate to composite signal anti-phase, thus produces the first correcting current and the second correction
Electric current.
In yet another embodiment, a kind of method of directional current sensor system that operates is by
First signal of the first forced commutation synchronous rectifier of one transformer sensing bidirectional transducer.Should
Method is further by the second forced commutation synchronous rectification of the second transformer sensing bidirectional transducer
Device secondary signal, and respectively the first signal and secondary signal are carried out DC recovery, thus point
You can well imagine and recover signal and the 2nd DC recovery signal for a DC.The method also to the first signal and
Secondary signal carries out feedback compensation, thus provides and become ratio with by the bidirectional current of bidirectional transducer
The two-way signaling of example, and control bidirectional transducer based on two-way signaling.
Present invention for introduce in simplified form described in detail below in further describe
Series of concepts.Present invention is not intended to identify key feature or necessity of claimed subject
Feature, is also not intended to the scope being used as to assist in claimed subject.
Accompanying drawing explanation
In conjunction with accompanying drawing and with reference to describing in detail and claim, can be with the more complete understanding present invention
Embodiment, wherein in a whole set of accompanying drawing, similar label refers to similar element.There is provided attached
Figure contributes to understand the disclosure, is not limiting as the amplitude of the disclosure, scope, ratio or is suitable for
Property.Accompanying drawing is not necessarily drawn to scale.
Fig. 1 is based on the diagram of the exemplary forced commutation synchronous rectifier of disclosure embodiment.
Fig. 2 is based on the example synchronization commutator bidirectional transducer system of disclosure embodiment
Diagram.
Fig. 3 is based on the example synchronization rectification being coupled to current sensor of disclosure embodiment
The diagram of device bidirectional transducer system.
Fig. 4 is based on embodiment of the disclosure, when the bidirectional transducer of Fig. 3 is operated in voltage delivery
Its exemplary current and the diagram of feedback waveform during increasing pattern (voltage step-up mode).
Fig. 5 is based on embodiment of the disclosure, when the bidirectional transducer of Fig. 3 is operated in voltage delivery
Its exemplary current and the diagram of feedback waveform during size reduction mode.
Fig. 6 is based on the exemplary DC of disclosure embodiment and recovers and summing amplifier circuit.
Fig. 7 is based on the exemplary stream showing bidirectional current sensing process of disclosure embodiment
The diagram of journey figure.
Fig. 8 is based on the exemplary stream showing bidirectional current sensing process of disclosure embodiment
The diagram of journey figure.
Fig. 9 is based on showing of disclosure embodiment and uses bi-directional voltage switching current sensor
The diagram of exemplary process diagram of process.
Detailed description of the invention
Further detail below is exemplary in nature, it is not intended to limit the disclosure, or these public affairs
The application of the embodiment opened and purposes.The explanation of concrete device, technology and application is only used as showing
Example provides.It is apparent to the amendment of example described here for those skilled in the art
, General Principle defined herein can apply to other examples and application, without departing from these public affairs
Open spirit and scope.Additionally, be not intended to by technical field before, background technology, summary of the invention
Any expression be given in described further below or the theoretical constraint of hint.The disclosure should be with
The scope of claim is consistent, and is not only restricted to example described herein as and that illustrate.
Can be according to functional block components and/or logical block components and various process step explanation at this
Embodiment of the disclosure.Should be appreciated that this kind of block part can perform specific merit by being configured to
Any number of hardware, software and/or the firmware component of energy realize.For sake of simplicity, have powered-down
The routine techniques of road design and parts, and other function aspects of system (respectively operates with system
Parts) it is not described in detail at this.Additionally, it will be understood by those skilled in the art that the disclosure
Embodiment can be implemented in conjunction with various computing hardware and software, and embodiment described herein is only
The exemplary embodiment of the disclosure.
Embodiment of the disclosure and illustrate under the background of actual unrestricted application, i.e. in boat
Voltage conversion on it device.But, embodiment of the disclosure and be not limited to the application of this kind of spacecraft,
Technology described here can also use in other applications.Such as but not limited to, embodiment can
Be applied to various voltage conversion application and circuit, the vehicles, automobile, aircraft, naval vessel,
Ship, building, electrical equipment, motor, battery operation and strengthen the vehicles and traffic
Tool system etc..
Those skilled in the art after having read this explanation it will be appreciated that below for the example of the disclosure
And embodiment, and it is not limited to according to these exemplary operations.Without departing from the exemplary reality of the disclosure
In the case of executing the scope of example, it is possible to use other embodiments also can make structural change.
Disclosure embodiment provides two forced commutation synchronous rectifiers, and it can be as follows
Use, i.e. transducer can effectively process the power of both direction.Such as, bidirectional transducer can
For use as electric discharge adjustor, with the bus voltage constant in backlight (eclipse) period holding, and
Same transducer can be used to adjust when solar battery array (solar array) is placed under daylight
The whole charging current to battery.
Technology described herein makes extreme efficient bidirectional transducer be possibly realized, and it can be such as
But it is not limited to adjust the charging current of battery under the daylight mode of space station by single transducer, with
And from the bus of battery under the backlight mode of adjustment space station.This single transducer can be used
Rather than individually hardware adjusts charging current and bus in existing system.Synchronized by utilization
Rectification, embodiment of the disclosure can be more more effective than the spacecraft bus of earlier generations adjusts hardware.
Embodiment of the disclosure and include synchronous rectifier bi-directional current sensor, it includes for electricity
Pressure is successively decreased/is incremented by, and (such as, buck/boost) adjustor/transducer (here, open by two power
Close each by synchronous rectification) current sensor.Such as, forced commutation synchronous rectifier is permissible
Allow electric current to flow in either direction, and do not cause associate the recovery time with FET body diode
High switching loss, this FET is the forced commutation synchronous rectifier of commutator for operation.When
Bi-directional synchronization transducer when processing from the power of bus thus charging the battery, bi-directional synchronization
Transducer may be operative to (such as blood pressure lowering) voltage adjuster/transducer that successively decreases, and low-pressure side is opened
Close (low side switch) and may be operative to commutator, and high side switch (high side switch)
Operation switchs for voltage grading (such as blood pressure lowering) converter power.Similarly, carrying when battery
During for power to bus, bi-directional synchronization converters operation is for being incremented by (such as boosting) Voltage Cortrol
Device/transducer, wherein high side switch operation is commutator, and high side switch operation is power
Switch.By this way, the embodiment of synchronous rectifier bi-directional current sensor disclosed herein
The voltage grading pattern (such as decompression mode) of sensing adjustor/transducer and voltage increment mode
The electric current of (such as boost mode).
Fig. 1 is based on the figure of the exemplary forced commutation synchronous rectifier 100 of disclosure embodiment
Show.Fig. 1 shows bidirectional transducer, wherein follows according to the work of power switch (not shown)
Ring, electric current can flow to the second bus 104/ from the first bus 102 (such as from battery) and export
Terminal 104 (such as, to spacecraft 100V bus) or from the second bus 104 to the first bus
102 (input terminals 102).Due to the least cycle of operation change can by the sense of current by from
First bus 102 electric discharge is changed into and is charged the first bus 102, it is therefore desirable for measurement/sensing coupling
Close the inductor current of the inducer of forced commutation synchronous rectifier 100, in order to can add
Feedback circuit thus allow finely control electric current size and Orientation.
Forced commutation synchronous rectifier 100 includes switch block, such as, be electrically coupled to forced commutation
The field-effect transistor (FET) 122 of circuit 140.FET 122 includes source terminal 112, grid
Extreme son 114, drain terminal 116 and intrinsic body 118.Such as but be not limited to, figure
FET 122 shown in 1 includes N-shaped FET, and wherein, the anode of intrinsic body 118 connects
To source terminal 112, the negative electrode of intrinsic body 118 is connected to drain terminal 116.
Although the embodiment use N-shaped FET shown in Fig. 1 is as example, but FET 122
Any switch block can be included, such as but not limited to, N-shaped FET, p-type FET, switch,
Or including can have related reverse recovery time intrinsic body base part.
In the embodiment that FET 122 is p-type FET, the direction of intrinsic body 118 can be anti-
To.In this arrangement, the negative electrode of intrinsic body 118 is connected to the source terminal of p-type FET
Son, and the anode of intrinsic body 118 is connected to the drain terminal of p-type FET.Another
In embodiment, switch block can be the rectifier switch for electric source topology.
Generally, it is given the voltage more than the threshold voltage associated with conducting FET when gate terminal
Time, N-shaped FET allows electric current to flow between source terminal and drain terminal.When being supplied to grid
When the voltage of extreme son decreases below threshold voltage or is completely removed, FET cut-off and
Between source terminal and drain terminal, the electric current of flowing stops flowing.When FET ends, if electric
Stream just flows to drain terminal from source terminal, then owing to electric current is originally in intrinsic body 118
Forward bias direction flowing, therefore the intrinsic body 118 of FET needs a period of time
Recover.
But, when FET ends, if electric current just flows to source terminal from drain terminal, then
Owing to electric current flows up in the reverse bias side of body diode, therefore need not the most extensive
The multiple time.Use the concepts described above, in the procedures of turn-off associated with FET, by inciting somebody to action
Electric current forced commutation is the anode terminal from the cathode terminal of diode to diode, can eliminate
The reverse recovery time of diode.
The gate terminal 114 of FET 122 is electrically coupled to control the driving voltage source of FET 122 switch
110.When this driving voltage source 110 provides threshold voltage for gate terminal 114, FET 122
Conducting.When gate terminal 114 no-voltage of FET 122, FET 122 ends.Electric current is joined
It is set to be flowed into by input terminal 102 source terminal 112 of FET 122, and flows out FET 122
Current direction lead-out terminal 104.
As it has been described above, FET 122 is electrically coupled to forced commutation circuit 140.Forced commutation circuit 140
Including pulse current source 120 (the forced commutation current source that selectivity controls) and commutation diode
108.Pulse current source 120 can be configured to produce the current of commutation, and the current of commutation is configured to
Bigger than the electric current entered by input terminal 102.In one embodiment, the current of commutation is
The pulse current of the very short time provided by forced commutation synchronous rectifier 100.This pulse current
Source 120 is electrically coupled to the anode terminal of commutation diode 108 at terminal 106.
Commutation diode 108 includes anode terminal (not shown), its electric coupling at terminal 106
To pulse current source 120.This commutation diode 108 also includes cathode terminal (not shown), its
FET 122 drain terminal 116 and lead-out terminal 104 it is electrically coupled at node 124.With this
Mode, commutation diode 108 is in parallel with FET 122.Commutation diode 108 should be with such as lower section
Formula is arranged, i.e. its cathode terminal is connected to the cathode terminal of intrinsic body 118.
Forced commutation synchronous rectifier 100 can be operated in four-stage.In the first stage, FET
122 and pulse current source 120 both end, thus pulse current source 120 do not provide commutation electricity
Stream.In this stage, input current enters forced commutation synchronous rectifier at input terminal 102
100, flow through commutation diode 108, and synchronize whole from forced commutation at lead-out terminal 104
Stream device 100 exports.
In second stage, FET 122 turns on and pulse current source 120 still ends.In this stage,
Input current is entered at input terminal 102 and is flowed by FET 122 from source terminal 112
To drain terminal 116, left by lead-out terminal 104.Because striding across the voltage drop of FET 122
Less than the forward voltage of commutation diode 108, so electric current is no longer flow through commutation diode 108.
In the phase III, while FET 122 turns on, pulse current source 120 is also switched on.
In this stage, input current enters forced commutation synchronous rectifier 100 at input terminal 102,
And flow through pulse current source 120 and commutation diode 108.Additionally, pulse current source 120 provides
Flow through the current of commutation of commutation diode 108 and FET 122.At node 124, input current stream
To lead-out terminal 104, and the current of commutation flows through FET 122 to source terminal from drain terminal 116
112。
In fourth stage, it flow to source electrode from drain terminal 116 by FET 122 at the current of commutation
While terminal 112, FET 122 ends.In this stage, the current of commutation stops flowing and defeated
Enter electric current flow through commutation diode 108 and export at lead-out terminal 104.For eliminating and FET
The reverse recovery time of intrinsic body 118 association of 122, when electric current is by FET 122
(the direction phase with intrinsic body 118 when drain terminal 116 flows to source terminal 112
Instead), FET 122 should end.By the event sequence described according to this four-stage, work as commutation
Electric current is by FET 122 when drain terminal 116 flows to source terminal 112, and FET 122 ends.
Therefore, the reverse recovery time associated with FET 122 is eliminated.
Above-mentioned forced commutation synchronous rectifier 100 can serve as the block structure of various application
(building block).Especially, by utilizing above-mentioned forced commutation synchronous rectifier 100,
The switch application utilizing the switch block including body diode can more efficiently carry out.Additionally,
Switch adjuster, such as step-down controller, boost converter and bust-boost converter, it is possible to
To use above-mentioned forced commutation synchronous rectifier 100.
Conventional switch adjuster can use commutator at the shut-in time (off of main FET
Time) period provides current path for inductor current.By modern improvement, take with FET
Having become the most practical for commutator, this is owing to the reverse recovery time of FET has become non-
The shortest, its result is to have considerably less energy dissipation.But, in high voltage applications, instead
Relatively notable to recovery time, cause significant power dissipation and the restriction to FET switch frequency.
In order to eliminate in high-voltage switch gear adjustor application (such as boost converter) as commutator
The reverse recovery time of the FET intrinsic body used, conventional rectifiers or synchro switch
FET can be substituted by the forced commutation synchronous rectifier 100 shown in Fig. 1.Relating to switch
In rectification application, rectification is with above-mentioned four-stage as cycle.These cycles are properly termed as commutator
Switch periods.Fourth stage occurs at the cut-off edge in rectifier switch cycle.At high-voltage rectifying
In device application, the voltage putting on switch (such as FET) can be higher than 60V.
Fig. 2 is based on the example synchronization commutator bidirectional transducer system 200 of disclosure embodiment
Diagram.Synchronous rectifier bi-directional converter system 200 includes that inducer 202, first is forced to change
To synchronous rectifier the 204, second forced commutation synchronous rectifier 206, drive logic 208, liter
Pressure side capacitors (boost side capacitor) 210, battery 212, solar battery array 214
Publicly 216.Fig. 2 shows the synchronous rectification as the operation of cell charging/discharging adjustor
The power stage partial schematic diagram of device bidirectional transducer system 200.
Inducer 202 is coupled to the first forced commutation synchronous rectifier 204 and second through bus 226
Forced commutation synchronous rectifier 206, and be linked 218 and be coupled to battery 212.First forces to change
It is linked 222 to synchronous rectifier 204 and is coupled to drive logic 208, and the second forced commutation
Synchronous rectifier 206 is linked 224 and is coupled to drive logic 208.Step-up side capacitor 210 warp
Bus 220 is coupled to solar battery array 214 and the first forced commutation synchronous rectifier 204.
Battery the 212, second forced commutation synchronous rectifier 206, step-up side capacitor 210 and solar energy
Array 214 is each attached to publicly 216.
In spacecraft is applied, the voltage of bus 220 is higher than the voltage of battery 212.Therefore, when
When the underpower that solar battery array 214 produces is to meet the requirement of spacecraft, synchronize whole
Stream device bidirectional transducer system 200 is drawn power from battery 212 thus provided for bus 220 must
The electric current needed.When the power that solar battery array 214 has excess can use, synchronous rectifier
Bidirectional transducer system 200 becomes voltage grading adjustor thus charges for battery 212.Therefore,
Battery 212 must be flowed out due to electric current thus power is provided for bus 220 and flows into battery 212
Thus charge for battery 212, therefore synchronous rectifier bi-directional converter system 200 is two-way merit
Rate processor.Additionally, due to switching rectifier be in due course between open FET, therefore with
Step commutator bidirectional transducer system 200 is synchronous rectification.
Owing to the voltage drop of FET is generally much lower than the voltage drop of commutator, synchronous rectifier is double
The efficiency more much higher than conventional buck or booster regulator can be realized to converter system 200.
It is to say, when from 80V battery booster to 100V bus, existing booster regulator has
There is the efficiency of about 96.5%.Synchronous rectifier bi-directional converter system 200 is of approximately
The efficiency of 98%.The raising of efficiency is to reduce to close with synchronous rectifier bi-directional converter system 200
The commutator loss of connection and the result of switching loss.
Fig. 3 is based on the example synchronization rectification being coupled to current sensor of disclosure embodiment
The diagram of device bidirectional transducer system 300.Synchronous rectifier bi-directional converter system 300 (is
System 300) include inducer 302 (being shown as 202 in Fig. 2), the first forced commutation synchronous rectification
Device 304 (high side switch 304, Fig. 2 are shown as 204), the second forced commutation synchronous rectifier
306 (low-side switch 306) (Fig. 2 is shown as 206), drive logic 308 (Fig. 2 is shown as
208), step-up side capacitor 310 (Fig. 2 is shown as 210), battery 312 (Fig. 2 is shown as 212),
Solar battery array 314 (Fig. 2 is shown as 214) and publicly 316 (Fig. 2 is shown as 216).
This system 300 farther includes the first current transformer 328 and the second current transformer 330.
This system 300 can have the function of system 100-200 that is similar to, material and a structure, therefore,
Common trait, function and element do not repeat at this.
First current transformer 328 and the second current transformer 330 measurement/sensing respectively first are felt
Survey electric current I (HS) and second sensing electric current I (LS), and generation is similar to through inducer
The signal of the inductor current IL of 302.For making the first current transformer 328 and the second electric current mutual
Sensor 330 is properly functioning, when the first sensing electric current I (HS) and the second sensing electric current I (LS)
When having DC bias (it is for positive bias or for back bias voltage), the first current transformer 328 and the
Two current transformers 330 can not be saturated.
Therefore, it is necessary to use in the first current transformer 328 and the second current transformer 330
Gap transformer iron core (gap transformer cores), in order to they will not be saturated.First electricity
Current transformer 328 and the second current transformer 330 are terminated at resistor 334 and resistor respectively
338, resistor 334 and resistor 338 produce signal voltage, and this signal voltage has and signal
The shape that electric current is essentially identical；But, signal voltage will be AC voltage.By mutual for the first electric current
Sensor 328 and the second current transformer 330 end are connected to resistor 334 and resistor 338 difference
Produce high-pressure side AC Current feedback voltage signal Ifb (HS) and low-pressure side AC current feedback electricity
Pressure signal Ifb (LS).
Fig. 4 is based on disclosure embodiment, is incremented by mould when the bidirectional transducer of Fig. 3 is operated in voltage
Exemplary current during formula (boost mode) and the diagram of feedback waveform 400.This waveform includes
Peak value the inducer 302 electric current IL of Ipk, peak value-Ipk high voltage side current I (HS),
Peak value is at low-pressure side electric current I (LS) of Ipk, high-pressure side AC Current feedback voltage signal Ifb
And low-pressure side AC Current feedback voltage signal Ifb (LS) (HS).
First, inducer 302 electric current IL flows to publicly 316 by low-side switch 306,
Energy is accumulated in inducer 302 simultaneously.Then, low-side switch 306 is ended and electric current
Bus 326 is flowed to by high side switch 304.First current transformer 328 and the second electric current are mutual
Sensor 330 is anti-phase, and wherein signal code is opened at high side switch 304 and low-pressure side respectively
ON time (on-time) period of pass 306 is for high-pressure side AC Current feedback voltage signal
Ifb (HS) and low-pressure side AC Current feedback voltage signal Ifb (LS) are all positive.Although
The shape of low-pressure side electric current I (LS) is retained, but DC information still can be lost.High-pressure side electricity
Stream I (HS) is negative (-Ipk), because it flows to drain electrode from source electrode, and low-pressure side FET has
Positive (Ipk) low-pressure side electric current I (LS), because electric current flows to source electrode from drain electrode.
Fig. 5 is based on disclosure embodiment, when the bidirectional transducer of Fig. 3 is operated in voltage grading mould
Exemplary current during formula (decompression mode) and the diagram of feedback waveform 500.Waveform includes peak
It is worth at the inductor current IL of-Ipk, peak value at high voltage side current I (HS) of-Ipk, peak value
Low-pressure side electric current I (LS), high-pressure side AC Current feedback voltage signal Ifb (HS) at-Ipk
With low-pressure side electric current AC Current feedback voltage signal Ifb (LS).First, inductor current IL
Flowing through low-side switch 306 from publicly 316, energy discharges from inducer 302 simultaneously.Then,
Low-side switch 306 is ended, and electric current flows to electricity by high side switch 304 from bus 326
Sensor 302.
Owing to the first current transformer 328 and the second current transformer 330 are anti-phase, thus electric
Stream signal respectively during the ON time of high side switch 304 and low-side switch 306 for
High-pressure side AC Current feedback voltage signal Ifb (HS) (AC waveform Ifb (HS)) and low
Pressure side AC Current feedback voltage signal Ifb (LS) (AC waveform 1fb (HS)) is all negative.
The shape of low-pressure side electric current I (LS) is retained；But, DC information dropout.Once generate two
They can be carried out DC recovery and be accumulated in together thus rebuild original inductance by individual AC waveform
Device current waveform.
Allow the ultimate principle that carries out as disclosed herein of DC recovery process be inducer not
D/C voltage at steady state can be supported.Therefore, when current impulse transformer primary around
In group (primary side winding) during a direction flowing, magnetizing current increases as follows
Add, i.e. electric current from armature winding deducts magnetizing current.
Such as, if electric current I (LS) flows into the second current transformer 330 (LS current transformer)
Initial terminal (start terminal), stride across the armature winding of the second current transformer 330
Voltage is positive.Therefore, the magnetizing current of the second current transformer 330 is increased up stable shape
State occurs.When flowing during electric current stops at the armature winding of the second current transformer 330, magnetic
Galvanic current is no longer flow into the initial terminal of armature winding.Therefore, electric current continues towards the second electric current
The initial terminal of the secondary windings of transformer 330.This so when closed between period cause negative electricity
Pressure (such as, when low-side switch 306 is ended).
It is said that in general, the average voltage that electric current is increased up in complete cycle is zero.It is to say,
At high-pressure side AC Current feedback voltage signal Ifb (HS) or low-pressure side AC Current feedback voltage
The first area higher than zero line (zero line) on signal Ifb (LS) is necessarily equal to be less than
The second area of zero line.Owing to inductance value is relatively large, in part phase shut-in time in cycle
Between magnetizing current do not significantly change.
Fig. 6 is based on the exemplary DC of disclosure embodiment and recovers and summing amplifier circuit 600
The diagram of (circuit 600).Signal is carried out DC recovery and is added by recovery signal by this circuit 600
Together.The key character of circuit 600 is Synchronization Control DC can to recover switch S1 and S2.
The DC of circuit 600 recover to drive logic 602 be operable to control DC recover switch S1 and
S2.Voltage VL is received from the bus 326 of bidirectional transducer system 300 (Fig. 3), and by it
It is coupled to DC recover to drive logic 602.Voltage VL is synchronizing signal, and it is configured to determine that
When open DC and recover each in switch S1/S2.It is to say, work as high side switch
Open S1 when high voltage side current I (HS) of 304 is zero, be otherwise shut off, when low-pressure side is opened
Open S2 when low-pressure side electric current I (LS) of pass 306 is zero, be otherwise shut off.When S1 opens
Time, node 604 is coupled to publicly 608, eliminates possibly be present on node 604 any
DC biases, and when S2 opens, node 606 is coupled to publicly 608, eliminates and may go out
Any DC bias on node 606 now.
Therefore, respectively capacitor C1 and C2 is charged to relevant voltage (i.e., respectively at node
604 and node 606 on), these voltage correspond to each of which AC Current feedback voltage signal
Zero shape of waveform (i.e., respectively AC waveform Ifb (HS) and AC waveform Ifb (LS))
State (zero condition).Therefore, a DC at node 604 and the 2nd DC at node
606 DC and AC waveform Ifb (LS) reverting to substantially equal to AC waveform Ifb (HS) respectively
DC.Thus rebuild the feedback signal on node 604 thus the height of simulated high-pressure side switch 304
The original waveform of pressure side electric current I (HS).Additionally, the feedback signal rebuild on node 606 thus
The original waveform of low-pressure side electric current I (LS) of simulation low-side switch 306.
At the first amplifier stage, summation inverting amplifier U1 (being coupled to R3) is by node 604
On feedback signal and feedback signal on node 606 be added, in order to structure and inductor current
Voltage signal-the Vi that IL (Fig. 3) is proportionalL1.Trended towards C1 by the electric current of R1 and R2
With the tension discharge on C2.Therefore, next amplifier stage, inverting amplifier U2 (coupling of suing for peace
Close resistor R4 and R5) construct voltage signal+Vi by a relatively large marginL2.Additionally, arrange
Resistor R6 and R7, wherein by first correcting current of resistor R6 equal to the electricity in R1
Stream, and by the second correcting current in resistor R7 equal to the electric current in resistor R2.
Therefore, at steady-state, the electric current to C1 and C2 electric discharge is efficiently reduced is zero.
Fig. 7 is based on disclosure embodiment and shows current sensing process 700 (process 700)
The diagram of exemplary process diagram.Cohesive process 700 perform various tasks can pass through software,
Hardware, firmware or its combination in any mechanically perform.Should be appreciated that process 700 can be wrapped
Including any number of additionally or alternatively task, the task shown in Fig. 7 is not required to hold in the order presented
OK, and process 700 can be integrated into and have the additional function not described at this more fully
Program or during.
For illustrative purpose, description to process 700 below is referred to above in conjunction with figure
The element that 1-6 mentions.Process 700 is further described with specific reference now to Fig. 3 and Fig. 6.In reality
In the embodiment on border, each several part of process 700 can by system 100-300 and 600 not
With element perform, such as: source terminal 112, gate terminal 114, drain terminal 116,
Intrinsic body 118, inducer L1, the first forced commutation synchronous rectifier 304 and second
Forced commutation synchronous rectifier 306 etc..Process 700 can have be similar to shown in Fig. 1-6 real
Execute the function of example, material and structure.Therefore, common trait, function and element do not repeat at this.
Process 700 may begin at: it is mutual that high side switch electric current I (HS) is fed to the first electric current
The armature winding of sensor 328, thus generate and AC electric current I (HS) in high side switch 304
A proportional AC electric current (task 702), and low-side switch electric current I (LS) feedback
Deliver to the armature winding of the second current transformer 330, thus generate and the AC in respective switch
The 2nd AC electric current (task 716) proportional for electric current I (LS).
Process 700 can continue: is received in resistor 334 by an AC current terminal, thus raw
Become AC Current feedback voltage signal Ifb (HS) (task 704), and by the 2nd AC
Current terminal is received in resistor 338, thus generates the 2nd AC Current feedback voltage signal Ifb (LS)
(task 718).
Process 700 can continue: DC recovers and summing amplifier 600 is by anti-for an AC electric current
Feedthrough voltage signal Ifb (HS) carries out DC recovery (task 706), and by the 2nd AC electricity
Stream feedback voltage signal Ifb (LS) carries out DC recovery (task 720).Circuit 600 is two
Individual signal Ifb (HS) and Ifb (LS) are respectively by rebuilding it after capacitor C1 and C2
DC biases.Switch S1 and S2 is recovered to drive logic 602 to drive by DC, thus respectively at joint
Point 604 and node 606 generate and recover D/C voltage.Capacitor C1 and C2 protection circuit 600
Do not affected by DC electric current, thus allowed circuit 600 low-power operation.
Then, process 700 can continue: the first correcting current (that is, is passed through by circuit 600
The electric current of V/I gain resistor R6) it is added to AC Current feedback voltage signal Ifb (HS)
(task 708), and by the second correcting current (that is, by V/I gain resistor R7's
Electric current) it is added to the 2nd AC Current feedback voltage signal Ifb (LS) (task 722).
Process 700 can continue: circuit 600 will by summation inverting amplifier U1 (Fig. 6)
2nd AC Current feedback voltage signal Ifb (LS) adds to an AC Current feedback voltage signal
Ifb (HS), thus produce inverted combinations signal-ViL1(task 712).Inverted combinations signal
-ViL1It is the inductor current IL of inverted version.Inverting amplifier U1 is by node 604 He in summation
The voltage waveform of the reconstruction on 606 is added, thus generates current feedback signal (that is, inverted combinations
Signal-ViL1)。
Process 700 can continue: circuit 600 by summation inverting amplifier U2 by inverted combinations
Signal-ViL1Anti-phase and amplify, thus produce composite signal+ViL2(task 714).Combination letter
Number+ViL2It is inverted combinations signal-ViL1Inverted version, and be the bigger of inductor current IL
The noninverting version of amplitude.
Process 700 can continue: circuit 600 produces the first correcting current and (that is, passes through V/I
The electric current of gain resistor R6) (task 710).In circuit 600, correcting current is by instead
Feedback, in order to the net current flowing out circuit 600 is reduced to zero.
Process 700 can continue: circuit 600 produces the second correcting current and (that is, passes through V/I
The electric current of gain resistor R7) (task 724).
Fig. 8 is based on disclosure embodiment and illustrates bidirectional current sensing process 800 (process 800)
The diagram of exemplary process diagram.Cohesive process 800 perform various tasks can pass through software,
Hardware, firmware or its combination in any mechanically perform.Should be appreciated that process 800 can include
Any number of additionally or alternatively task, the task shown in Fig. 8 is not required to be performed in the order presented,
And process 800 can be integrated into the more fully program with the additional function not described at this
During or.
For illustrative purpose, the description of procedure below 800 is referred to above in conjunction with Fig. 1-6
The element mentioned.In an actual embodiment, each several part of process 800 can be by system
Different element in 100-300 and circuit 600 performs, such as: source terminal 112, grid
Terminal 114, drain terminal 116, intrinsic body 118, inducer L1, the first pressure
Commutation synchronous rectifier 304 and the second forced commutation synchronous rectifier 306 etc..Process 800 can
To have the function of the embodiment being similar to Fig. 1-3 and Fig. 6, material and structure.Therefore, altogether
Same feature, function and element do not repeat at this.
Process 800 may begin at: senses/measures via the first current transformer 328 by
First electric current of one forced commutation synchronous rectifier 304, thus the first signal (task 802) is provided.
Process 800 can continue: senses/measures via the second current transformer 330 by second
Second electric current of forced commutation synchronous rectifier 306, thus secondary signal (task 804) is provided.
Then, process 800 can continue: the first signal and secondary signal are carried out DC recovery,
Thus provide a DC to recover signal and the 2nd DC recovery signal (task 806).
Process 800 can continue: recovers signal by the first correcting current adds to a DC
Produce the first corrected signal (task 808).
Process 800 can continue: recovers signal by the second correcting current adds to the 2nd DC
Produce the second corrected signal (task 810).
Then, process 800 can continue: by the first corrected signal and second being corrected
Signal phase Calais produce composite signal (task 812).
Process 800 can continue: forms the first correcting current and the second correction electricity based on composite signal
Stream (task 814).
Fig. 9 is based on embodiment of the disclosure and shows use bi-directional voltage switching current sensor
The diagram of the exemplary process diagram of process 900.The various tasks that cohesive process 900 performs can be led to
Cross software, hardware, firmware or its combination in any mechanically to perform.Should be appreciated that process 900
Can include any number of additionally or alternatively task, the task shown in Fig. 9 is not required to suitable by illustrate
Sequence performs, and process 900 can be integrated into and have the additional function not described at this more comprehensively
Program or during.
For illustrative purpose, the description of procedure below 900 is referred to above in conjunction with Fig. 1-6
The element mentioned.In an actual embodiment, each several part of process 900 can be by system
Elements different in 100-300 and circuit 600 performs, such as: source terminal 112, gate terminal
Son 114, drain terminal 116, intrinsic body 118, inducer L1, the first pressure are changed
To synchronous rectifier 304 and the second forced commutation synchronous rectifier 306 etc..Process 900 is permissible
There is the function of the embodiment being similar to Fig. 1-3 and Fig. 6, material and structure.Therefore, jointly
Feature, function and element do not repeat at this.
Process 900 may begin at: by means of the of the first current transformer sensing bidirectional transducer
First signal (task 902) of one forced commutation synchronous rectifier 304.
Process 900 can continue: sensing bidirectional transducer by means of the second current transformer 330 (is
System 300) the secondary signal (task 904) of the second forced commutation synchronous rectifier 306.
Process 900 can continue: the first signal and secondary signal are carried out DC recovery, thus carries
Recover signal for a DC and the 2nd DC recovers signal (task 906).
Process 900 can continue: the first signal and secondary signal are carried out feedback compensation, thus carries
For two-way signaling, its to by the bidirectional current of bidirectional transducer (system 300) proportional (times
Business 908).
Process 900 can continue: controls bidirectional transducer (task 910) based on two-way signaling.
In this way, embodiment of the disclosure and provide bidirectional current sensing circuit, this bidirectional current
Sensing circuit is a kind of signal processor, and it is not sacrificed bandwidth or precision and generates inductor current
The copy of IL, as feedback signal or telemetered signal.Signal in circuit is (such as, at node
604 and 606) relatively large (1V magnitude), therefore the amplifier gain of circuit can be low.
Therefore, it can the input off-set voltage drift by the bandwidth and several millivolts with about 1mega-Hz
Standard operational amplifier realize inductor current IL reasonable accuracy reproduce.Be described herein
The power dissipation of method association relatively low, and do not require usual no special bias voltage.
Can dissipate a great deal of including the existing operation amplifier circuit of the diverter connected with inducer
Power.Owing to signal is low, amplifier will have high-gain and wide bandwidth thus accurately reproduce electricity
Sensor current waveform.Additionally, due to operation amplifier circuit will have the least input voltage,
The input off-set voltage of amplifier (operational amplifier) is by the precision of appreciable impact circuit.As a result,
Floating bias is needed to power for circuit, because amplifier is by the electromotive force of reference battery.This may
Cause the worst performance and higher costs.
Existing magamp (magamp circuit) uses AC source to encourage two to lean against
The transformer of the back of the body, in order at any given time, transformer is saturated and another transformer
As current transformer.These circuit are more much bigger than above-described embodiment and are generally of limited band
Wide.Therefore, the dither (ripple) of inductor current can be lost from reproduce, and this can show
Write the performance limiting current feedback loop.Magamp circuit also can introduce noise and pulsation electricity
Stream, low frequency pulsating is eventually incorporated in the electric current being fed to 100V bus by this.Due to from
In 100V bus, filtering low noise is extremely difficult, so this is the most less desirable.
Described above refer to element or node feature " connects " or " coupling " together.As
Here used, unless otherwise expressly stated, otherwise " connect " mean an element/node/
Feature is bonded directly to another element/node/feature (or directly communicating with), without machine
Carry out tool.Similarly, unless otherwise expressly stated, otherwise " couple " and mean one
Element/node/feature be bonded directly or indirectly to another element/node/feature (directly or
Connect and communicate with), without mechanically carrying out.Therefore, although described in Fig. 1-3 and Fig. 6
The exemplary arrangement of element, but extra intervening element, device, feature or parts can go out
In embodiment of the disclosure now.
In term used in this document and phrase and its change, unless otherwise expressly stated, no
Then it is interpreted as open and nonrestrictive.As aforesaid example: term " includes "
It is interpreted as " including, but are not limited to " etc.；Term " example " is for providing showing of discussion item
Example example rather than limit or restrictive list；And such as " routine ", " biography
System ", " normally ", " standard ", the adjective of " known " and similar anticipate
Time period that justice term should not be construed as described item is limited to give or be limited in preset time
Interior available item, and it is understood to include that can use in present and any time in the future or known
Conventional, traditional, the normal or technology of standard.
Same, by conjunction " with " one group of item connecting should not be construed as requiring in these each
It is present in this group with each item, and is interpreted as "and/or", unless otherwise expressly stated.Class
As, conjunction "or" the one group of item connected should not be understood and requires mutual exclusion in this set, but should
It is interpreted as "and/or", unless otherwise expressly stated.Although additionally, disclosure middle term, element or
Parts describe in the singular or declare, but plural form is also contemplated within the scope of it, unless right
Singulative explicitly points out restriction.In some instances, broadening word or expression such as " one or
Multiple ", " at least ", the existence of " but being not limited to " or other similar phrases can not be read as meaning
Taste and is had a mind in the example without this kind of broadening phrase or require narrower situation.
Claims (12)
1. the method sensed for the bidirectional current of synchronous rectifier bi-directional converter system, described method includes:
Via the first transformer sensing the first electric current by the first synchronous rectifier, thus provide the first signal；
Via the second transformer sensing the second electric current by the second synchronous rectifier, thus provide secondary signal；
By removing DC bias from described first signal and described secondary signal, described first signal and described secondary signal are carried out DC recovery, thus provide a DC to recover signal and the 2nd DC recovery signal respectively, wherein said DC recovers to include: receive the voltage of about zero current at least one indicated in described first synchronous rectifier and described second synchronous rectifier, and open at least one in two DC recovery switches based on described voltage, thus by least one ground connection in described first signal and secondary signal；
The first corrected signal is produced by the first correcting current being added to a described DC recovery signal；
The second corrected signal is produced by the second correcting current being added to described 2nd DC recovery signal；
By described first corrected signal and described second corrected signal phase Calais are produced composite signal.
Method the most according to claim 1, farther includes:
Described first correcting current and described second correcting current is formed based on described composite signal；And
Synchronous rectifier bi-directional converter system is controlled based on described composite signal.
Method the most according to claim 1, farther includes to control to be coupled to described first synchronous rectifier and the driving logic of described second synchronous rectifier based on described composite signal.
Method the most according to claim 1, farther includes:
By forming inverted combinations signal by anti-phase for described composite signal；And
Control to be coupled to described first synchronous rectifier and the driving logic of described second synchronous rectifier based on described inverted combinations signal.
Method the most according to claim 3, one of wherein said first synchronous rectifier and described second synchronous rectifier include forced commutation synchronous rectifier, and described forced commutation synchronous rectifier includes:
Field-effect transistor FET switch, it includes that gate terminal, drain terminal, source terminal and intrinsic body, described intrinsic body include cathode terminal and anode terminal；
Commutation diode, its parallel connection is electrically coupled to described FET switch, and the negative electrode of wherein said commutation diode is electrically coupled to the cathode terminal of described intrinsic body；And
The forced commutation current source that selectivity controls, it is electrically coupled to described commutation diode, and may operate to when described FET switch turns on, from described commutation diode, the current of commutation is transferred to described FET switch, and the most described current of commutation transmits the anode terminal to described intrinsic body from the cathode terminal of described intrinsic body.
6. a synchronous rectifier bi-directional current sensor system, comprising:
First transformer, it may operate to sense the first electric current from the first synchronous rectifier, thus provides the first signal；
Second transformer, it may operate to sense the second electric current from the second synchronous rectifier, thus provides secondary signal；And
DC recovers and summing amplifier circuit, and it is coupled to described first synchronous rectifier and the second synchronous rectifier, and described DC recovers and summing amplifier circuit includes:
DC restoring circuit, its may operate to by from described first signal and described secondary signal remove DC bias described first signal and described secondary signal are carried out DC recovery, thus provide a DC to recover signal and the 2nd DC recovery signal, wherein said DC recovers to include: receive the voltage of about zero current at least one indicated in described first synchronous rectifier and described second synchronous rectifier, and open at least one in two DC recovery switches based on described voltage, thus by least one ground connection in described first signal and secondary signal；And
DC summing amplifier, comprising:
First add circuit, it may operate to by the first correcting current adds to a described DC recovery signal, thus produces the first corrected signal；
Second add circuit, it may operate to by the second correcting current adds to described 2nd DC recovery signal, thus produces the second corrected signal；
Summation inverting amplifier, it may operate to by described first corrected signal and described second corrected signal are added and are amplified, thus produces composite signal；And
Inverting amplifier, it may operate to by by anti-phase for described composite signal, thus produces described first correcting current and described second correcting current.
Synchronous rectifier bi-directional current sensor system the most according to claim 6, one of wherein said first synchronous rectifier and described second synchronous rectifier include forced commutation synchronous rectifier, and wherein said forced commutation synchronous rectifier includes:
Field-effect transistor FET switch, it includes that gate terminal, drain terminal, source terminal and intrinsic body, described intrinsic body include cathode terminal and anode terminal；
Commutation diode, its parallel connection is electrically coupled to described FET switch, and the negative electrode of wherein said commutation diode is electrically coupled to the cathode terminal of described intrinsic body；And
The forced commutation current source that selectivity controls, it is electrically coupled to described commutation diode, and may operate to when described FET switch turns on, the current of commutation is transmitted the anode terminal to described intrinsic body from described commutation diode transmission to described FET switch, the most described current of commutation from the cathode terminal of described intrinsic body.
Synchronous rectifier bi-directional current sensor system the most according to claim 6, farther includes:
Inducer；
First forced commutation synchronous rectifier, it is coupled to described inducer and may operate to when the element that cut-off associates with diode, by being the anode terminal from the cathode terminal of described diode to described diode by current of commutation forced commutation, thus eliminate the reverse recovery time of described diode；And
Second forced commutation synchronous rectifier, it is coupled to described inducer and described first forced commutation synchronous rectifier, and it may operate to when the element that cut-off associates with diode, by being the anode terminal from the cathode terminal of described diode to described diode by current of commutation forced commutation, thus eliminate the reverse recovery time of described diode.
9. the method operating directional current sensor system, described method includes:
The first signal with the first synchronous rectifier of the first transformer sensing bidirectional transducer；
Secondary signal with the second synchronous rectifier of the second transformer sensing bidirectional transducer；
By removing DC bias from described first signal and described secondary signal, described first signal and described secondary signal are carried out DC recovery, thus obtain a DC and recover signal and the 2nd DC recovery signal, wherein said DC recovers to include: receive the voltage of about zero current at least one indicated in described first synchronous rectifier and described second synchronous rectifier, and open at least one in two DC recovery switches based on described voltage, thus by least one ground connection in described first signal and secondary signal；
Described first signal and described secondary signal are carried out feedback compensation, thus the two-way signaling proportional to the bidirectional current by described bidirectional transducer is provided；And
Bidirectional transducer is controlled based on described two-way signaling.
Method the most according to claim 9, farther includes:
Control to be coupled to described first synchronous rectifier and the driving logic of described second synchronous rectifier based on described two-way signaling；And
Described first signal and described secondary signal are combined, thus composite signal is provided, and control to be coupled to described first synchronous rectifier and the driving logic of described second synchronous rectifier based on described composite signal.
11. methods according to claim 10, farther include:
By forming inverted combinations signal by anti-phase for described composite signal；And
Control to be coupled to described first synchronous rectifier and the driving logic of described second synchronous rectifier based on described inverted combinations signal.
12. methods according to claim 9, one of wherein said first synchronous rectifier and described second synchronous rectifier include forced commutation synchronous rectifier, and wherein said forced commutation synchronous rectifier includes:
Field-effect transistor FET switch, it includes that gate terminal, drain terminal, source terminal and intrinsic body, described intrinsic body include cathode terminal and anode terminal；
Commutation diode, its parallel connection is electrically coupled to described FET, and the negative electrode of wherein said commutation diode is electrically coupled to the cathode terminal of described intrinsic body；And
The forced commutation current source that selectivity controls, it is electrically coupled to described commutation diode, and may operate to when described FET switch turns on, the current of commutation is transmitted the anode terminal to described intrinsic body from described commutation diode transmission to described FET switch, the most described current of commutation from the cathode terminal of described intrinsic body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/961,452 US8687386B2 (en) | 2010-12-06 | 2010-12-06 | Synchronous rectifier bi-directional current sensor |
| US12/961,452 | 2010-12-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102570816A CN102570816A (en) | 2012-07-11 |
| CN102570816B true CN102570816B (en) | 2016-12-14 |
Family
ID=
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0679049A1 (en) * | 1994-04-18 | 1995-10-25 | General Electric Company | Gas discharge lamp ballast circuit |
| CN1864319A (en) * | 2003-10-01 | 2006-11-15 | 国际整流器公司 | Bridgeless boost converter with pfc circuit |
| CN101090233A (en) * | 2006-06-13 | 2007-12-19 | 三美电机株式会社 | Multi-output type dc/dc converter |
| CN101567636A (en) * | 2009-06-08 | 2009-10-28 | 英飞特电子（杭州）有限公司 | Current controlled synchronous rectification drive circuit |
| CN101667783A (en) * | 2008-09-05 | 2010-03-10 | 艾默生网络能源系统北美公司 | Synchronous rectification drive device and method for converter |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0679049A1 (en) * | 1994-04-18 | 1995-10-25 | General Electric Company | Gas discharge lamp ballast circuit |
| CN1864319A (en) * | 2003-10-01 | 2006-11-15 | 国际整流器公司 | Bridgeless boost converter with pfc circuit |
| CN101090233A (en) * | 2006-06-13 | 2007-12-19 | 三美电机株式会社 | Multi-output type dc/dc converter |
| CN101667783A (en) * | 2008-09-05 | 2010-03-10 | 艾默生网络能源系统北美公司 | Synchronous rectification drive device and method for converter |
| CN101567636A (en) * | 2009-06-08 | 2009-10-28 | 英飞特电子（杭州）有限公司 | Current controlled synchronous rectification drive circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhao et al. | Single-phase improved active clamp coupled-inductor-based converter with extended voltage doubler cell | |
| Agamy et al. | An efficient partial power processing DC/DC converter for distributed PV architectures | |
| US8391038B2 (en) | Inverter for feeding electric energy into a power supply system | |
| JP5303648B2 (en) | Separation circuit for DC / AC converter | |
| CN106169872A (en) | Bidirectional, dc is to DC converter | |
| CN104837669A (en) | Device and method for charging an electrical energy store from a three-phase ac voltage source | |
| CN111869069B (en) | Power control capacitor circuit and control method thereof | |
| US11065968B2 (en) | Integrated multi-source IPT system | |
| CN109088542A (en) | A kind of combined bidirectional DC transfer circuit | |
| CN105958816A (en) | Multi-unit diode capacitor network and coupling inductor high-gain DC converter | |
| CN103187864A (en) | Buck active power factor correction device | |
| CN103825457A (en) | Quasi-Z-source DC-DC boost converter circuit | |
| EP2461470B1 (en) | Synchronous rectifier bi-directional current sensor | |
| CN103904760A (en) | Electric vehicle vehicle-mounted charge control system and control method thereof | |
| CN106712523A (en) | Boost three-level full-bridge inverter and control method thereof | |
| CN114583952A (en) | Bidirectional direct current converter for energy storage system and control method thereof | |
| Saravanan et al. | Distinguished DC-DC Converter for an Electric Vehicle | |
| Ramanathan et al. | Design of mono stage bridgeless converter for light electric vehicles charging | |
| Gokul et al. | Design and control of non-isolated bidirectional DC-DC converter for energy storage application | |
| CN1941589B (en) | Electric power converter circuit | |
| CN102570816B (en) | Synchronous rectifier bi-directional current sensor | |
| CN205847086U (en) | A kind of switching capacity type high-gain quasi-Z source DC DC changer | |
| CN205847090U (en) | A kind of mixed type quasi-boost switching DC DC changer | |
| Li et al. | Improved quadratic boost converter using cross coupled-inductor | |
| Georgious et al. | Series-parallel connection of low-voltage sources for integration of galvanically isolated energy storage systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |