CN109194131A - A kind of the adaptive synchronous commutating control system and control method of time-sharing multiplex hardware - Google Patents
A kind of the adaptive synchronous commutating control system and control method of time-sharing multiplex hardware Download PDFInfo
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- CN109194131A CN109194131A CN201810702479.1A CN201810702479A CN109194131A CN 109194131 A CN109194131 A CN 109194131A CN 201810702479 A CN201810702479 A CN 201810702479A CN 109194131 A CN109194131 A CN 109194131A
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33592—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The invention discloses a kind of adaptive synchronous commutating control system of time-sharing multiplex hardware and control methods, are suitable for high voltage, high-frequency controlled resonant converter.The synchronous rectifier switch of controlled resonant converter secondary uses GaN power tube, with its reversed drooping characteristic, it is proposed a kind of adaptive synchronous commutating control system and control method, realize the direct detection of shutdown " too early " state, shutdown " too late " state and " shutdown just " state of synchronous rectifier switch, after several modulation periods, so that power tube turns off just and enters stable state control model.The present invention is more easily detected off state, and realization more accurately controls, and saves chip processing resource, improves the efficiency of controlled resonant converter；It proposes time-sharing multiplex hardware simultaneously, further increases the utilization rate of hardware resource, reduce hardware cost.
Description
Technical field
The present invention relates to adaptive synchronous commutating control methods, more particularly to a kind of the adaptive same of time-sharing multiplex hardware
Step rectification control method.
Background technique
In the prior art, Si (silicon) and GaN (gallium nitride) is two kinds of different materials used by synchronous rectification power tube.
GaN has low hot generation rate and high breakdown electric field, popular power tube material is increasingly becoming in recent years, with GaN material system
It is standby gone out metal field effect transistor (MESFET), heterojunction field effect transistor (HFET), modulation-doped FET
(MODFET) new devices such as.Compared to Si power tube, GaN power tube possesses smaller junction capacity, more under same conducting resistance
Big pressure-resistant, smaller area, therefore it is more suitable for high voltage, high-frequency and high-temperature applications.According to Fig. 1, bearing together
Etc. in the case where reverse withstand voltages and forward current, when the reverse current for flowing through Si power tube and GaN power tube increases, Si power
The reversed pressure drop of pipe becomes -0.8V from 0V immediately, but subsequently reverse direction characteristic curve remains essentially as straight line；GaN power tube it is anti-
Become -1.25V from 0V immediately to pressure drop, and the reversed pressure drop is with IsdIncrease constantly increase.
Controlled resonant converter is a kind of power converter, and switching loss is small, has high frequency efficient rate characteristic, at present in low pressure
It is widely used in large-current electric source domain.In the prior art, the synchronous rectifier switch of controlled resonant converter secondary uses
MOSFET (Metal Oxide Semiconductor Field Effect Transistor) constitutes rectification and opens up to substitute individual diode and filter capacitor
It flutters.The junction voltage of the more individual diode of the voltage of MOSFET is low when because of forward conduction, therefore loss is relatively low, to be promoted whole
Flow efficiency.When using MOSFET, voltage signal is controlled by special chip to drive the shutdown or conducting of MOSFET, ideal feelings
Under condition, when flowing through the electric current of MOSFET greater than 0, power tube is opened；Flow through MOSFET electric current be 0 or it is reversed when, switch-off power
Pipe.
In existing adaptive synchronous commutating technology, synchronous rectifier switch off state is detected simultaneously by hardware topology
It is actually turned on the time using the control of turn-on time timer, is detected wherein being divided into the detection of synchronous rectifier switch off state
It turns off " too early " and shutdown " too early " two states is not detected；When detecting that shutdown " too early " then increases the conducting in next period
Between to realize that synchronous rectifier switch postpones shutdown, shutdown " too early " is not detected and is then considered as shutdown " too late ", then reduces next
The turn-on time in period, and realize that synchronous rectifier switch turns off in advance.But it is " too early " comprising two that shutdown is actually not detected
Kind off state, i.e. shutdown " too late " state and " shutdown just " state, in the prior art can not be straight to the progress of both states
Detection is connect, is alternately switched under two kinds of drive modes so that synchronous rectifier switch is chronically to postpone shutdown and turn off in advance, electricity
Source system cannot be introduced into steady state operating conditions, therefore occupy a large amount of chip processing resource, increase application cost and debugging
Workload reduces whole efficiency.
Summary of the invention
The technical problems to be solved by the present invention are: the synchronous rectifier switch of controlled resonant converter secondary uses GaN power
Pipe, with the reversed drooping characteristic of GaN power tube, realizes shutdown " too early " state, the shutdown " too late " of synchronous rectifier switch
The direct detection of state and " just shutdown " state proposes a kind of adaptive synchronous commutating control system and control method, passes through
After several modulation periods, so that power tube turns off just and enter stable state control model, chip processing resource is saved, improves resonance
The efficiency of converter.It proposes time-sharing multiplex hardware simultaneously, to further increase the utilization rate of hardware resource, reduces hardware cost.
The present invention uses following technical scheme to solve above-mentioned technical problem:
The present invention proposes a kind of adaptive synchronous commutating control system (1) of time-sharing multiplex hardware, comprising: sampling processing electricity
Road (2), with microcontroller (3) be core control circuit and driver (10)；It take microcontroller (3) as the control circuit of core
Including first comparator (5), the second comparator (6), PWM module (9), gating network (4), latch (7) and control logic
(8)；Wherein, first comparator (5), the second comparator (6) and PWM module (9) actually integrate hard for microcontroller (3) inside
Part functional module, gating network (4), latch (7) and control logic (8) are the function of microcontroller (3) internal software realization
It can module.
The input terminal of the sampling processing circuit (2) is separately connected the first synchronous rectification switch of controlled resonant converter secondary
SR1Drain electrode and the second synchronous rectification switch SR2Drain electrode, the output end connection controlled resonant converter of driver (10) it is secondary the
One synchronous rectification switch SR1Grid and the second synchronous rectification switch SR2Grid；
The output end of the sampling processing circuit (2) is respectively connected to the input negative terminal of first comparator (5) and second and compares
The input negative terminal of device (6), the threshold voltage that gating network (4) provides are respectively connected to the input anode and the of first comparator (5)
The input anode of two comparators (6)；The output end of first comparator (5) and the second comparator (6) is connected to latch (7), lock
The output of storage (7) is connected to control logic (8), and the output of control logic (8) is connected to PWM module (9), PWM module it is defeated
It is connected to driver (10) out；
First synchronous rectifier switch SR of controlled resonant converter secondary1With the second synchronous rectifier switch SR2It is GaN function
Rate pipe, GaN power tube can realize that ZCS is turned off.
The present invention proposes that a kind of adaptive synchronous commutating control method of time-sharing multiplex hardware, working principle are as follows: in shape
In state detection time, drain-source voltage V of the sampling processing circuit to the synchronous rectifier switch of controlled resonant converter secondarydsIt carries out
Become sensing voltage V after acquisition and processingSR, it is the control circuit of core to sensing voltage V using microcontrollerSRBe compared and
Logic judgment provides the testing result of synchronous rectification switch off state, and next cycle synchronisation is controlled according to the testing result
The turn-on time of rectifier switch.
It is the control circuit of core to the sensing voltage V of synchronous rectifier switch using microcontrollerSRWith threshold voltage VthInto
Row relatively and after logic judgment determines the first synchronous rectification switch off state, and controls next the first synchronous rectifier of period and open
The turn-on time of pass, specific as follows:
The shutdown of (1) first synchronous rectifier switch state too late, in response to the first synchronous rectification in the state-detection time
Sensing voltage V on device switchSR1It is always more than first threshold voltage Vth1, and the second synchronous rectifier in the state-detection time
Sensing voltage V on switchSR2Occur being less than second threshold voltage Vth2；Reduce leading for next the first synchronous rectifier switch of period
The logical time；
The too early state of shutdown of (2) first synchronous rectifier switch, in response to the first synchronous rectification in the state-detection time
Sensing voltage V on device switchSR1Occur being less than first threshold voltage Vth1, and the second synchronous rectifier in the state-detection time
Sensing voltage V on switchSR2It is always more than second threshold voltage Vth2；Increase leading for next the first synchronous rectifier switch of period
The logical time；
The lucky off state of (3) first synchronous rectifier switch, in response to the first synchronous rectification in the state-detection time
Sensing voltage V on device switchSR1It is always more than first threshold voltage Vth1, and the second synchronous rectifier in the state-detection time
Sensing voltage V on switchSR2It is always more than second threshold voltage Vth2；Keep leading for next the first synchronous rectifier switch of period
The logical time is constant；
It is the control circuit of core to the sensing voltage V of synchronous rectifier switch using microcontrollerSRWith threshold voltage VthInto
Row relatively and after logic judgment determines the second synchronous rectification switch off state, specific as follows:
(1) shutdown of second synchronous rectifier switch state too late, it is synchronous in response in the state-detection time second
Sensing voltage V on rectifier switchSR1It is always more than first threshold voltage Vth1, and in the state-detection time first synchronize it is whole
Flow the sensing voltage V on device switchSR2Occur being less than second threshold voltage Vth2；Reduce next the second synchronous rectifier switch of period
Turn-on time；
(2) the too early state of shutdown of second synchronous rectifier switch, it is synchronous in response in the state-detection time second
Sensing voltage V on rectifier switchSR1Occur being less than first threshold voltage Vth1, and in the state-detection time first synchronize it is whole
Flow the sensing voltage V on device switchSR2It is always more than second threshold voltage Vth2；Increase next the second synchronous rectifier switch of period
Turn-on time；
(3) the lucky off state of second synchronous rectifier switch, it is synchronous in response in the state-detection time second
Sensing voltage V on rectifier switchSR1It is always more than first threshold voltage Vth1, and in the state-detection time first synchronize it is whole
Flow the sensing voltage V on device switchSR2It is always more than second threshold voltage Vth2；Keep next the first synchronous rectifier switch of period
Turn-on time it is constant；
After several modulation periods, so that synchronous rectification switch turns off just and enters stable state control model, closing is adopted
Sample processing circuit and using microprocessor as the control circuit of core saves chip processing resource, improves the efficiency of controlled resonant converter.
The present invention proposes a kind of adaptive synchronous commutating control method, also can detecte the abnormal shape of synchronous rectification switch
State, specific as follows: the abnormality of the first synchronous rectifier switch is opened in response to the first synchronous rectifier in the state-detection time
The sensing voltage V shutSR1Occur being less than first threshold voltage Vth1, and the second synchronous rectifier switch in the state-detection time
On sensing voltage VSR2Occur being less than second threshold voltage Vth2；The abnormality of second synchronous rectifier switch, in response to shape
Sensing voltage V in state detection time in the second synchronous rectifier switchSR2Occur being less than first threshold voltage Vth1, and state
Sensing voltage V in detection time in the first synchronous rectifier switchSR1Occur being less than second threshold voltage Vth2；It is described synchronize it is whole
Stream device controller reports an error and closes all synchronous rectifier switch, into protected mode.
The sampling and control of the off state of first synchronous rectification switch and the second synchronous rectification switch, belong to two simultaneously
Identical hardware and control logic can be used in capable circulation, and only there are phase differences in timing.Therefore, it is proposed by the present invention from
It adapts to only be arranged two groups of comparators in the control circuit using microcontroller as core in synchronous rectification control system, i.e., first
Comparator and the second comparator.Modulating the first synchronous rectifier switch SR1When, it is synchronous that first is compared using first comparator
Sensing voltage V on rectifier switchSR1With first threshold voltage Vth1Relationship, while it is same to compare using the second comparator second
Walk the sensing voltage V on rectifier switchSR2With second threshold voltage Vth2Relationship；Modulating the second synchronous rectifier switch SR2
When, the sensing voltage V on the first synchronous rectification switch is compared using first comparatorSR1With second threshold voltage Vth2Pass
It is, while compares the sensing voltage V on the second synchronous rectification switch using the second comparatorSR2With first threshold voltage Vth1's
Relationship.The present invention, according to different rectifier switch modulation periods, is used in the case where the input negative terminal of comparator is remained unchanged
Gating network switches the input anode that different threshold voltages is input to comparator, to realize first comparator and first comparator
Hardware time-sharing multiplex, improve the utilization rate of hardware resource, reduce hardware cost.
The invention adopts the above technical scheme compared with prior art, has following technical effect that
1, suitable for the controlled resonant converter switched using GaN power tube as secondary synchronous rectifier, GaN is sufficiently used
The reversed drooping characteristic of power tube, is more easily detected off state compared with prior art, and realization more accurately controls.Resonance becomes
Parallel operation does not increase circuit devcie, does not change circuit structure, and to the circuit devcie performance of controlled resonant converter without particular/special requirement, because
This present invention is suitable for the controlled resonant converter of different topology structure.
2, shutdown " too early " state in this period of synchronous rectifier switch, shutdown " too late " state are realized and " is closed just
It is disconnected " the direct detection of state, and corresponding control is taken to synchronous rectifier switch turn-on time in next period.Compared to existing
Technology, the present invention can shutdown " too late " state to synchronous rectifier switch and " shutdown just " state provide accurately sentence respectively
It is disconnected, avoid the frequent switching of synchronous rectifier switch.
3, using the present invention, after several modulation periods, so that synchronous rectification switch turns off just and enters stable state control
Molding formula, sampling processing circuit is closed under stable state and using microprocessor as the control circuit of core, therefore the present invention improves together
The adaptive ability of step rectification control, saves microcontroller resource and reduces power consumption, improve controlled resonant converter power conversion efficiency,
It, can effectively save electric energy loss especially in low-voltage high-current power source in electrical domain.
4, time-sharing multiplex comparator improves microcontroller hardware resource utilization, reduces hardware cost.
5, using control method proposed by the present invention, the present invention is not related to numerical control using comparator analog detection and control
Timing problem, therefore service precision is higher, detects speed faster in high frequency occasion.
Detailed description of the invention
Fig. 1 is the reverse characteristic curve figure of GaN power tube and Si power tube；
Fig. 2 is to be proposed using GaN power tube as the controlled resonant converter sub-section of synchronous rectifier switch and the present invention
A kind of time-sharing multiplex hardware adaptive synchronous commutating control system topological structure block diagram；
Fig. 3 is the flow chart of synchronous rectification control method in the prior art；
Fig. 4 is a kind of flow chart (of the adaptive synchronous commutating control method of time-sharing multiplex hardware proposed by the present invention
One synchronous rectification switch)；
Fig. 5 is a kind of flow chart (of the adaptive synchronous commutating control method of time-sharing multiplex hardware proposed by the present invention
Two synchronous rectification switch), and reflect the first synchronous rectification switch brew cycle and the second synchronous rectification switch brew cycle it
Between time cooperation relationship；
Fig. 6 is a kind of wave of the adaptive synchronous commutating control method embodiment of time-sharing multiplex hardware proposed by the present invention
Shape figure (the first synchronous rectification switch)；
Fig. 7 is the timing of the first and second synchronous rectification switch brew cycle and state-detection time proposed by the present invention
Figure；
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing:
As shown in Fig. 2, as the controlled resonant converter sub-section of synchronous rectifier switch including: band using GaN power tube
Centre tapped transformer TrSecondary windings, the synchronous rectifier for being coupled to the secondary windings with centre tapped transformer opens
Pass and filter capacitor Co；The synchronous rectifier switch includes the first synchronous rectifier switch SR1It is opened with the second synchronous rectifier
Close SR2；First synchronous rectifier switch SR1Drain electrode connects the centre tapped transformer T of bandrSecondary windings first end
Head, the first synchronous rectifier switch SR1Source electrode connects the filter capacitor CoGround terminal；Second synchronous rectifier switch SR2Leakage
Pole connects the centre tapped transformer T of bandrSecondary windings the second end, the second synchronous rectifier switch SR2Source electrode connects
Meet the filter capacitor CoGround terminal；The filter capacitor CoOne end ground connection, the other end connect the centre tapped transformation of band
Device TrSecondary windings centre cap.
As shown in Fig. 2, the first synchronous rectifier switch SR of the controlled resonant converter secondary1It is opened with the second synchronous rectifier
Close SR2It is GaN power tube, GaN power tube can realize that ZCS is turned off.
The present invention proposes a kind of adaptive synchronous commutating control system (1) of time-sharing multiplex hardware, topological structure block diagram
As shown in Figure 2.Adaptive synchronous commutating control system (1) include: sampling processing circuit (2), with microcontroller (3) be core
Control circuit and driver (10)；Include first comparator (5), second compare with the control circuit that microcontroller (3) are core
Device (6), PWM module (9), gating network (4), latch (7) and control logic (8)；Wherein, first comparator (5), the second ratio
It is microcontroller (3) internal hardware function actually integrated, gating network (4), latch compared with device (6) and PWM module (9)
(7) and control logic (8) be microcontroller (3) internal software realization functional module.
The input terminal of the sampling processing circuit (2) is separately connected the first synchronous rectification switch of controlled resonant converter secondary
SR1Drain electrode and the second synchronous rectification switch SR2Drain electrode, the output end connection controlled resonant converter of driver (10) it is secondary the
One synchronous rectification switch SR1Grid and the second synchronous rectification switch SR2Grid.
The output end of the sampling processing circuit (2) is respectively connected to the input negative terminal of first comparator (5) and second and compares
The input negative terminal of device (6), the threshold voltage that gating network (4) provides are respectively connected to the input anode and the of first comparator (5)
The input anode of two comparators (6)；The output end of first comparator (5) and the second comparator (6) is connected to latch (7), lock
The output of storage (7) is connected to control logic (8), and the output of control logic (8) is connected to PWM module (9), PWM module it is defeated
It is connected to driver (10) out.
First synchronous rectifier switch SR1With the second synchronous rectifier switch SR2Off state sampling and control, point
Belong to two parallel circulations, identical hardware and control logic can be used, only there are phase differences in timing.Therefore, this hair
In the adaptive synchronous commutating control system of bright proposition, with microcontroller (1) be core control circuit in be only arranged two groups
Comparator, i.e. first comparator (5) and the second comparator (6).Modulating the first synchronous rectifier switch SR1When, use first
Comparator (5) compares the sensing voltage V on the first synchronous rectification switchSR1With first threshold voltage Vth1Relationship, make simultaneously
Compare the sensing voltage V on the second synchronous rectification switch with the second comparator (6)SR2With second threshold voltage Vth2Relationship；
Modulating the second synchronous rectifier switch SR2When, compare the sensing on the first synchronous rectification switch using first comparator (5)
Voltage VSR1With second threshold voltage Vth2Relationship, while being compared on the second synchronous rectification switch using the second comparator (6)
Sensing voltage VSR2With first threshold voltage Vth1Relationship.The present invention is the case where the input negative terminal of comparator remains unchanged
Under, according to different rectifier switch modulation periods, switches different threshold voltages with gating network (4) and be input to comparator
It inputs anode and improves making for hardware resource to realize the hardware time-sharing multiplex of first comparator (5) and the second comparator (6)
With rate, hardware cost is reduced.
Fig. 3 is the flow chart of the synchronous rectification control method of the first synchronous rectification switch in the prior art, and Fig. 4 is the present invention
It is proposed the first synchronous rectification switch adaptive synchronous commutating control method flow chart, by comparing Fig. 3 and Fig. 4 as it can be seen that
Control method proposed by the present invention compared with prior art, to shutdown " too early " state of synchronous rectifier switch, shutdown " too late "
State and " shutdown just " state can be detected directly, especially can more accurately be detected to shutdown " too late " state, and
And different control strategies is proposed according to different states, so that system enters stable state after several modulation periods.
Fig. 5 is the flow chart of the adaptive synchronous commutating control method of the second synchronous rectification switch proposed by the present invention, figure
In also reflect that time cooperation between the first synchronous rectification switch brew cycle and the second synchronous rectification switch brew cycle closes
System.From fig. 5, it can be seen that at the beginning of the second synchronous rectification switch brew cycle be at the beginning of process 113 in Fig. 4
Synchronization point.The state-detection of first synchronous rectification switch terminates when process 114 in Fig. 5, and control system is by first at this time
Comparator and the second comparator are converted to from the comparison detecting state to the first synchronous rectification switch to the second synchronous rectification switch
Compare detection, avoid first comparator and idle state occurs in the second comparator, realize the time-sharing multiplex of hardware, improves hard
Part resource utilization.
Fig. 6 is a kind of adaptive synchronous commutating control of time-sharing multiplex hardware of the first synchronous rectification switch proposed by the present invention
The waveform diagram of method embodiment processed；As shown in Figure 4 and Figure 6, first with the first synchronous rectifier switch SR1For, to this hair
A kind of specific steps of the adaptive synchronous commutating control method of time-sharing multiplex hardware of bright proposition are described as follows:
Step A-1: start time, this period the first synchronous rectifier switch SR1In opening state, the second synchronous rectification
Device switch SR2It is in an off state, the first synchronous rectifier switch SR1Duration timer start timing.
Step A-2: process 110, the first synchronous rectifier switch SR1Drain-source voltage Vds1With the second synchronous rectifier
Switch SR2Drain-source voltage Vds2After sampled processing circuit (2), become sensing voltage signal VSR1And VSR2, sensing voltage
Range of signal be 0~3.3V, corresponding to realistic simulation signal range be -5~11.5V, can accurately reflect first synchronize it is whole
Flow device switch SR1With the second synchronous rectifier switch SR2Current state；Sensing voltage signal VSR1And VSR2It is separately input to
The input negative terminal of one comparator (5) and the input negative terminal of the second comparator (6)；
According to being currently in the first synchronous rectifier switch period of modulation, gating network (4) is by first threshold voltage Vth1
It is input to the input anode of first comparator (5), by second threshold voltage Vth2It is input to the input anode of the second comparator (6)；
First threshold voltage V in this optimal enforcement exampleth1For 0.2V, second threshold voltage Vth2For the 1V, -4V of corresponding realistic simulation signal
And 0V.
Step A-3: process 111, the state-detection time of the first synchronous rectifier switch, start time ts1In advance
Moment point t is turned off in the first synchronous rectifier switchoff1, time △ t in advance is slightly larger than the first synchronous rectifier as shown in Figure 7
Switch gate driving signal is converted into the time t of power flow by driver1；In this optimal enforcement example, time △ t in advance is arranged
For 20ns.
Step A-4: process 112, the first synchronous rectifier switch SR1Duration timer when reach a period calculating
The first obtained synchronous rectifier switch SR1Open duration Tx, trigger the first synchronous rectifier switch SR1Cut-off signals.
Step A-5: process 113, this period the second synchronous rectifier switch SR2In opening state, the first synchronous rectification
Device switch SR1It is in an off state, the second synchronous rectifier switch SR2Duration timer start timing.
Step A-6: the state-detection time of process 114, the first synchronous rectifier switch terminates, finish time te1Lag
Moment point t is opened in the second synchronous rectifier switchon2, lag time △ t as shown in Figure 7 opens slightly larger than the second synchronous rectifier
Close the time t that grid driving signal is converted into power flow by driver2；In this optimal enforcement example, lag time △, t was set as
20ns。
Step A-7: process 115 handles the state-detection of the first synchronous rectifier switch from process 111 to process 114
Information in time, that is, the output valve A and B of latch (7)；
Compare the sensing voltage V on the first synchronous rectification switch using first comparator (5)SR1With first threshold voltage
Vth1Relationship, while comparing using the second comparator (6) the sensing voltage V on the second synchronous rectification switchSR2With the second threshold
Threshold voltage Vth2Relationship；If the output of first comparator (5) or the second comparator (6) is 1, the value of corresponding A or B are 1,
If the output of first comparator (5) or the second comparator (6) is 0, the value of corresponding A or B are 0.
Step A-8: according to the value of different A and B, control logic (8) exports different control strategies, illustrates respectively such as
Under:
(1) when latch (7) output A=0, B=1, into control strategy 1, the specific steps are as follows:
Step A1-1: process 116, the first synchronous rectifier switch SR1Shutdown too late, shorten next period first synchronize it is whole
Flow device switch SR1Open duration；
Step A1-2: process 119, next period open duration Tx_p=Tx- △ T, △ T is fine tuning step-length；
Step A1-3: process 122, start time, next the first synchronous rectifier switch of period SR1In opening state,
Second synchronous rectifier switch SR2It is in an off state, the first synchronous rectifier switch SR1Duration timer start timing；
Step A1-4: step A-2 is repeated to step A-3；A-4 is entered step, as the first synchronous rectifier switch SR1Duration
Reach when timer and opens duration Tx_pWhen, trigger the first synchronous rectifier switch SR1Cut-off signals continue step A-5 to step
Rapid A-8.
(2) latch (7) exports A=1, B=0, into control strategy 2, the specific steps are as follows:
Step A2-1: process 117, the first synchronous rectifier switch SR1Shutdown too early, increase next period first synchronize it is whole
Flow device switch SR1Open duration；
Step A2-2: process 120, the opening time T in next periodx_p=Tx+ △ T, △ T is fine tuning step-length；
Step A2-3: process 122, start time, next the first synchronous rectifier switch of period SR1In opening state,
Second synchronous rectifier switch SR2It is in an off state, the first synchronous rectifier switch SR1Duration timer start timing；
Step A2-4: step A-2 is repeated to step A-3；A-4 is entered step, as the first synchronous rectifier switch SR1Duration
Reach when timer and opens duration Tx_pWhen, trigger the first synchronous rectifier switch SR1Cut-off signals continue step A-5 to step
Rapid A-8.
(3) latch (7) exports A=0, B=0, into control strategy 3, the specific steps are as follows:
Step A3-1: process 118, the first synchronous rectifier switch SR1Just shutdown, next the first synchronous rectifier of period
Switch SR1Opening time remain unchanged；
Step A3-2: process 121, the opening time T in next periodx_p=Tx；
Step A3-3: process 123, start time, next the first synchronous rectifier switch of period SR1In opening state,
Second synchronous rectifier switch SR2It is in an off state, the first synchronous rectifier switch SR1Duration timer start timing；
Step A3-4: process 124, as the first synchronous rectifier switch SR1Reach when duration timer and opens duration Tx_p
When, trigger the first synchronous rectifier switch SR1Cut-off signals continue step A3-3.
(4) latch (7) exports A=1, B=1, into control strategy 4, the exception of the first synchronous rectifier switch at this time
State, into protected mode.
A kind of adaptive synchronous commutating control method of time-sharing multiplex hardware proposed by the present invention, opens the first synchronous rectification
Close SR1With the second synchronous rectification switch SR2Modulation be to belong to two cardiopulmonary bypass in beating heart, between the operation of execution is consistent and two circulations
There are a regular time is poor, first comparator and second compares time-sharing multiplex, as shown in connection with fig. 5, to the second synchronous rectification
Device switch SR2The process step of adaptive synchronous commutating control method be described as follows:
Step B-1: start time, this period the second synchronous rectifier switch SR2In opening state, the first synchronous rectification
Device switch SR1It is in an off state, the second synchronous rectifier switch SR2Duration timer start timing, the start time is corresponding
At the beginning of process 113 in Fig. 4.
Step B-2: process 210, the first synchronous rectifier switch SR1Drain-source voltage Vds1With the second synchronous rectifier
Switch SR2Drain-source voltage Vds2After sampled processing circuit (2), become sensing voltage signal VSR1And VSR2, sensing voltage
Range of signal be 0~3.3V, corresponding to realistic simulation signal range be -5~11.5V, can accurately reflect first synchronize it is whole
Flow device switch SR1With the second synchronous rectifier switch SR2Current state；Sensing voltage signal VSR1And VSR2It is separately input to
The input negative terminal of one comparator (5) and the input negative terminal of the second comparator (6)；
According to being currently in the second synchronous rectifier switch period of modulation, gating network (4) is by first threshold voltage Vth1
It is input to the input anode of the second comparator (6), by second threshold voltage Vth2It is input to the input anode of first comparator (5)；
First threshold voltage V in this optimal enforcement exampleth1For 0.2V, second threshold voltage Vth2For the 1V, -4V of corresponding realistic simulation signal
And 0V.
Step B-3: process 211, the state-detection time of the second synchronous rectifier switch, start time ts2In advance
Moment point t is turned off in the second synchronous rectifier switchoff2, time △ t in advance is slightly larger than the second synchronous rectifier as shown in Figure 7
Switch gate driving signal is converted into the time t of power flow by driver2；In this optimal enforcement example, time △ t in advance is arranged
For 20ns.
Step B-4: process 212, the second synchronous rectifier switch SR2Duration timer when reach a period calculating
The second obtained synchronous rectifier switch SR2Open duration Tx, trigger the second synchronous rectifier switch SR2Cut-off signals.
Step B-5: process 213, this period the first synchronous rectifier switch SR1In opening state, the second synchronous rectification
Device switch SR2It is in an off state, the first synchronous rectifier switch SR1Duration timer start timing.
Step B-6: the state-detection time of process 214, the second synchronous rectifier switch terminates, finish time te2Lag
Moment point t is opened in the first synchronous rectifier switchon2, lag time △ t as shown in Figure 7 opens slightly larger than the first synchronous rectifier
Close the time t that grid driving signal is converted into power flow by driver1；In this optimal enforcement example, lag time △, t was set as
20ns。
Step B-7: process 215 handles the state-detection of the second synchronous rectifier switch from process 211 to process 214
Information in time, that is, the output valve A and B of latch (7).
Step B-8: according to the value of different A and B, control logic (8) exports different control strategies, illustrates respectively such as
Under:
(1) when latch (7) output A=1, B=0, into control strategy 1, the specific steps are as follows:
Step B1-1: process 216, the first synchronous rectifier switch SR1Shutdown too late, shorten next period first synchronize it is whole
Flow device switch SR2Open duration；
Step B1-2: process 219, next period open duration Tx_p=Tx- △ T, △ T is fine tuning step-length；
Step B1-3: process 222, start time, next the second synchronous rectifier switch of period SR2In opening state,
First synchronous rectifier switch SR1It is in an off state, the second synchronous rectifier switch SR2Duration timer start timing；
Step B1-4: step B-2 is repeated to step B-3；B-4 is entered step, as the second synchronous rectifier switch SR2Duration
Reach when timer and opens duration Tx_pWhen, trigger the second synchronous rectifier switch SR2Cut-off signals continue step B-5 to step
Rapid B-8.
(2) latch (7) exports A=0, B=1, into control strategy 2, the specific steps are as follows:
Step B2-1: process 217, the second synchronous rectifier switch SR2Shutdown too early, increase next period second synchronize it is whole
Flow device switch SR2Open duration；
Step B2-2: process 220, the opening time T in next periodx_p=Tx+ △ T, △ T is fine tuning step-length；
Step B2-3: process 222, start time, next the second synchronous rectifier switch of period SR2In opening state,
First synchronous rectifier switch SR1It is in an off state, the second synchronous rectifier switch SR2Duration timer start timing；
Step B2-4: step B-2 is repeated to step B-3；B-4 is entered step, as the second synchronous rectifier switch SR2Duration
Reach when timer and opens duration Tx_pWhen, trigger the second synchronous rectifier switch SR2Cut-off signals continue step B-5 to step
Rapid B-8.
(3) latch (7) exports A=0, B=0, into control strategy 3, the specific steps are as follows:
Step B3-1: process 218, the second synchronous rectifier switch SR2Just shutdown, next the second synchronous rectifier of period
Switch SR2Opening time remain unchanged；
Step B3-2: process 221, the opening time T in next periodx_p=Tx；
Step B3-3: process 223, start time, next the second synchronous rectifier switch of period SR2In opening state,
First synchronous rectifier switch SR1It is in an off state, the second synchronous rectifier switch SR2Duration timer start timing；
Step B3-4: process 224, as the second synchronous rectifier switch SR2Reach when duration timer and opens duration Tx_p
When, trigger the second synchronous rectifier switch SR2Cut-off signals continue step B3-3.
(4) latch (7) exports A=1, B=1, into control strategy 4, the exception of the second synchronous rectifier switch at this time
State, into protected mode.
In this optimal enforcement example, after 50 synchronous rectification modulation periods, the first synchronous rectification switch and second synchronous
Rectifier switch enters lucky off state, enters systematic steady state mode at this time, closes the control with microcontroller (3) for core
First comparator (5), the second comparator (6), gating network (4), latch (7) and control logic (8) in circuit, microcontroller
Device (3) power consumption significantly reduces.
The above is only some embodiments of the invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of adaptive synchronous commutating control system of time-sharing multiplex hardware, it is characterised in that: including sampling processing circuit, with
Microcontroller is the control circuit and driver of core；
It include first comparator and the second comparator, PWM module, gating network, lock by the control circuit of core of microcontroller
Storage and control logic；Wherein, the first comparator, the second comparator and PWM module are that microcontroller is practical integrated
Hardware function, the gating network, control logic and latch be microcontroller software realization function mould
Block；
The sampling processing circuit input terminal connection controlled resonant converter secondary synchronous rectification switch drain electrode, driver it is defeated
Outlet connects the grid of the synchronous rectification switch of controlled resonant converter secondary；
The output end of the sampling processing circuit is respectively connected to the input negative terminal of first comparator and the input of the second comparator is born
End, the threshold voltage that gating network provides are respectively connected to the input anode of the input anode and the second comparator of first comparator；
The output end of first comparator and the second comparator is connected to latch, and the output of latch is connected to control logic, and control is patrolled
The output collected is connected to PWM module, and the output of PWM module is connected to driver.
2. synchronous rectification control system according to claim 1, it is characterised in that: using microcontroller as the control of core
Two groups of comparators, i.e. first comparator and the second comparator are only set in circuit, in the defeated of first comparator and the second comparator
Enter in the case that negative terminal remains unchanged, according to rectifier switch modulation period, switches different threshold voltages with gating network
It is separately input to the input anode of first comparator and the second comparator, to realize the time-sharing multiplex of two groups of comparator hardwares；
The sampling and control of the off state of first synchronous rectification switch and the second synchronous rectification switch, belong to two it is parallel
Identical hardware and control logic can be used there are a regular time is poor between the operation of execution is consistent and two circulations in circulation,
Only there are phase differences in timing；Therefore, synchronous in modulation first in adaptive synchronous commutating control system proposed by the present invention
Rectifier switch SR1When, the sensing voltage V on the first synchronous rectification switch is compared using first comparatorSR1With first threshold
Voltage Vth1Relationship, while comparing using the second comparator the sensing voltage V on the second synchronous rectification switchSR2With the second threshold
Threshold voltage Vth2Relationship；Modulating the second synchronous rectifier switch SR2When, compared using first comparator first synchronize it is whole
Sensing voltage V on stream switchSR1With second threshold voltage Vth2Relationship, while it is synchronous to compare using the second comparator second
Sensing voltage V on rectifier switchSR2With first threshold voltage Vth1Relationship；The present invention improves the utilization rate of hardware resource,
Reduce hardware cost.
3. synchronous rectification control system according to claim 1, it is characterised in that: within the state-detection time, at sampling
Circuit is managed to the drain-source voltage V of the synchronous rectifier switch of controlled resonant converter secondarydsIt is acquired, and is processed into sensing electricity
Press VSR, drain-source voltage VdsFor the substantially threshold voltage containing negative pressure, sensing voltage VSRFor range 0~3.3V positive electricity
Pressure.
4. control system according to claim 1, it is characterised in that: the wherein synchronous rectification of the controlled resonant converter secondary
Device switch is GaN power tube.
5. a kind of adaptive synchronous commutating control method of time-sharing multiplex hardware, it is characterised in that: within the state-detection time, adopt
Drain-source voltage V of the sample processing circuit to the synchronous rectifier switch of controlled resonant converter secondarydsIt is acquired and becomes after handling
Sensing voltage VSR, it is the control circuit of core to sensing voltage V using microcontrollerSRIt is compared and logic judgment, provides synchronization
The testing result of rectifier switch off state, when controlling the conducting of next cycle synchronisation rectifier switch according to the testing result
Between.
6. control method according to claim 5, it is characterised in that: using microcontroller be the control circuit of core to synchronization
The sensing voltage V of rectifier switchSRWith threshold voltage VthIt is compared and determines that the first synchronous rectification switch closes after logic judgment
Disconnected state, and the turn-on time of next the first synchronous rectifier switch of period is controlled, it is specific as follows:
The shutdown of (1) first synchronous rectifier switch state too late, is opened in response to the first synchronous rectifier in the state-detection time
The sensing voltage V shutSR1It is always more than first threshold voltage Vth1, and the second synchronous rectifier switch in the state-detection time
On sensing voltage VSR2Occur being less than second threshold voltage Vth2；When reducing the conducting of next the first synchronous rectifier switch of period
Between；
The too early state of shutdown of (2) first synchronous rectifier switch, is opened in response to the first synchronous rectifier in the state-detection time
The sensing voltage V shutSR1Occur being less than first threshold voltage Vth1, and the second synchronous rectifier switch in the state-detection time
On sensing voltage VSR2It is always more than second threshold voltage Vth2；When increasing the conducting of next the first synchronous rectifier switch of period
Between；
The lucky off state of (3) first synchronous rectifier switch is opened in response to the first synchronous rectifier in the state-detection time
The sensing voltage V shutSR1It is always more than first threshold voltage Vth1, and the second synchronous rectifier switch in the state-detection time
On sensing voltage VSR2It is always more than second threshold voltage Vth2；When keeping the conducting of next the first synchronous rectifier switch of period
Between it is constant.
7. control method according to claim 5, it is characterised in that: using microcontroller be the control circuit of core to synchronization
The sensing voltage V of rectifier switchSRWith threshold voltage VthIt is compared and determines that the second synchronous rectification switch closes after logic judgment
Disconnected state, specific as follows:
(1) shutdown of second synchronous rectifier switch state too late, in response to the second synchronous rectification in the state-detection time
Sensing voltage V on device switchSR1It is always more than first threshold voltage Vth1, and the first synchronous rectifier in the state-detection time
Sensing voltage V on switchSR2Occur being less than second threshold voltage Vth2；Reduce leading for next the second synchronous rectifier switch of period
The logical time；
(2) the too early state of shutdown of second synchronous rectifier switch, in response to the second synchronous rectification in the state-detection time
Sensing voltage V on device switchSR1Occur being less than first threshold voltage Vth1, and the first synchronous rectifier in the state-detection time
Sensing voltage V on switchSR2It is always more than second threshold voltage Vth2；Increase leading for next the second synchronous rectifier switch of period
The logical time；
(3) the lucky off state of second synchronous rectifier switch, in response to the second synchronous rectification in the state-detection time
Sensing voltage V on device switchSR1It is always more than first threshold voltage Vth1, and the first synchronous rectifier in the state-detection time
Sensing voltage V on switchSR2It is always more than second threshold voltage Vth2；Keep leading for next the first synchronous rectifier switch of period
The logical time is constant.
8. according to the method described in claim 5, it is characterized by: the abnormality of the first synchronous rectifier switch, in response to
Sensing voltage V in the state-detection time in the first synchronous rectifier switchSR1Occur being less than first threshold voltage Vth1, and shape
Sensing voltage V in state detection time in the second synchronous rectifier switchSR2Occur being less than second threshold voltage Vth2；Second is synchronous
The abnormality of rectifier switch, in response to the sensing voltage V in the second synchronous rectifier switch in the state-detection timeSR2Out
Now it is less than first threshold voltage Vth1, and the sensing voltage V in the state-detection time in the first synchronous rectifier switchSR1Occur
Less than second threshold voltage Vth2；The synchronous rectifier controller reports an error and closes all synchronous rectifier switch, into protection
Mode.
9. according to the method described in claim 5, it is characterized by: the state-detection time, closes for synchronous rectifier switch
The disconnected state-detection period；
In the detection of the first synchronous rectifier switch off state, state-detection time start time ts1It is synchronized in advance in first whole
Flow device switch OFF moment point toff1, time in advance need to be greater than the first synchronous rectifier switch grid driving signal and pass through driver
It is converted into the time t of power flow1, finish time te1Lag behind the second synchronous rectifier switch start-up time point ton2, when lag
Between need to be greater than the second synchronous rectifier switch grid driving signal and be converted into the time t of power flow by driver2；
In the detection of the second synchronous rectifier switch off state, state-detection time start time ts2It is synchronized in advance in second whole
Flow device switch OFF moment point toff2, time in advance need to be greater than the second synchronous rectifier switch grid driving signal and pass through driver
It is converted into the time t of power flow2, finish time te2Lag behind the first synchronous rectifier switch start-up time point ton1, when lag
Between need to be greater than the first synchronous rectifier switch grid driving signal and be converted into the time t of power flow by driver1。
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| CN110868215A (en) * | 2019-12-10 | 2020-03-06 | 中国电子科技集团公司第四十三研究所 | Self-adaptive control high-precision current/frequency conversion circuit |
| CN112260524A (en) * | 2020-09-30 | 2021-01-22 | 中国航空工业集团公司雷华电子技术研究所 | Digital power supply and synchronous rectification control method thereof |
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| US20150214850A1 (en) * | 2014-01-27 | 2015-07-30 | Leadtrend Technology Corporation | Synchronous Rectification Controller and Relevant Control Method |
| CN107425728A (en) * | 2017-02-28 | 2017-12-01 | 东南大学 | The digital optimal control method and its system of a kind of LLC full-bridge converters synchronous rectification |
-
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| US20150214850A1 (en) * | 2014-01-27 | 2015-07-30 | Leadtrend Technology Corporation | Synchronous Rectification Controller and Relevant Control Method |
| CN107425728A (en) * | 2017-02-28 | 2017-12-01 | 东南大学 | The digital optimal control method and its system of a kind of LLC full-bridge converters synchronous rectification |
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| CN110868215A (en) * | 2019-12-10 | 2020-03-06 | 中国电子科技集团公司第四十三研究所 | Self-adaptive control high-precision current/frequency conversion circuit |
| CN110868215B (en) * | 2019-12-10 | 2024-02-09 | 中国电子科技集团公司第四十三研究所 | Self-adaptive control high-precision current/frequency conversion circuit |
| CN112260524A (en) * | 2020-09-30 | 2021-01-22 | 中国航空工业集团公司雷华电子技术研究所 | Digital power supply and synchronous rectification control method thereof |
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