CN110299837A - A kind of high pressure BOOST circuit and its control method - Google Patents
A kind of high pressure BOOST circuit and its control method Download PDFInfo
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- CN110299837A CN110299837A CN201910549740.3A CN201910549740A CN110299837A CN 110299837 A CN110299837 A CN 110299837A CN 201910549740 A CN201910549740 A CN 201910549740A CN 110299837 A CN110299837 A CN 110299837A
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- switch
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- capacitor device
- high pressure
- controllable switch
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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
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
Abstract
The invention discloses a kind of high pressure BOOST circuit and its control method, which includes: the first inductor, first switch tube, second switch, first diode, the second diode, first capacitor device, the first controllable switch and charging circuit；Wherein, charging circuit is connect with first capacitor device, for first capacitor device to be charged to charging complete state；The present invention passes through the setting of the first controllable switch and charging circuit, it can be before carrying out control starting to first switch tube and second switch, in the case where the first controllable switch disconnects, first capacitor device is charged to charging complete state using circuit is plugged in, so as to pass through the type selecting of component and first capacitor device in charging circuit, guarantee that the voltage of first capacitor device can charge to the above stationary value of secure threshold, the system of avoiding needs the process of the voltage of quick sampling first capacitor device, reduces system control difficulty.
Description
Technical field
The present invention relates to electronic circuit technology field, in particular to a kind of high pressure BOOST circuit and high pressure BOOST circuit
Control method.
Background technique
Currently, the topological structure of common high pressure (such as 1500V) BOOST circuit is as shown in Figure 1, have stresses of parts small,
The features such as inductance frequency height, but in initial start, capacitor CflyVoltage be 0, in order to avoid switching tube Q1And Q2Equal devices
Voltage stress it is excessively high, need to capacitor CflyIt is pre-charged, by capacitor CflyVoltage charge to secure threshold or more.
In the prior art, system is to capacitor CflyDuring being pre-charged, quick sampling capacitor C is generally requiredfly
Voltage controlled, to guarantee capacitor CflyVoltage charge to secure threshold or more so that system control difficulty it is higher.
Therefore, how to guarantee capacitor CflyCan voltage charge on the basis of secure threshold or more, avoid be
Unite quick sampling capacitor CflyVoltage process, reduce system and control difficulty, be urgent problem now.
Summary of the invention
The object of the present invention is to provide a kind of high pressure BOOST circuit and its control methods, to guarantee capacitor CflyCan
Voltage charges on the basis of secure threshold or more, avoids system quick sampling capacitor CflyThe process that is controlled of voltage, drop
Low system controls difficulty.
In order to solve the above technical problems, the present invention provides a kind of high pressure BOOST circuit, comprising: the first inductor, first open
Guan Guan, second switch, first diode, the second diode, first capacitor device, the first controllable switch and charging circuit；
Wherein, the first end of first inductor is connected its common end and described the with the anode of the first diode
The first end of one switching tube is connected, the cathode of the first diode be connected with the anode of second diode its common end and
The first end of the first capacitor device is connected, and the second end of the first capacitor device passes through first controllable switch and described the
The second end of one switching tube is connected, and the second end of the first switch tube is connected with the first end of the second switch, described
The second end of the second end of first inductor and the second switch is for connecting input power, the yin of second diode
The second end of pole and the second switch is for connecting load；
The charging circuit is connect with the first capacitor device, is used for when first controllable switch disconnects, will be described
First capacitor device is charged to charging complete state, and the voltage of the first capacitor device is made to reach stationary value.
Optionally, the charging circuit includes: the second capacitor and the second controllable switch；
Wherein, the first end of second capacitor is connected with the second end of the first capacitor device, second capacitor
The second end of device is connected by second controllable switch with the second end of the second switch, the stationary value and described the
The voltage value of the capacity and the input power of one capacitor and second capacitor is corresponding.
Optionally, the charging circuit further include: the second inductor；
Wherein, the second end with the first end of the second inductor of the first capacitor device are connected its common end by described the
One controllable switch is connected with the second end of the first switch tube, the second end of second inductor and second capacitor
First end be connected.
Optionally, the charging circuit further include: resistor；
Wherein, the second end with the first end of resistor of the first capacitor device are connected its common end by described first can
Control switch is connected with the second end of the first switch tube, the first end of the second end of the resistor and second capacitor
It is connected.
Optionally, the first switch tube and the second switch are IGBT pipe；
Wherein, the first end and the first diode of the collector of the first switch tube and first inductor
Anode is connected, and the emitter of the first switch tube is connected with the collector of the second switch, the second switch
Emitter is connected by second controllable switch with the second end of second capacitor, the first switch tube and described
The grid of two switching tubes is respectively used to connect corresponding driving pulse output end.
Optionally, the capacitor of the first capacitor device and second capacitor is equal；
Corresponding, the stationary value is the half of the voltage value of the input power.
Optionally, high pressure BOOST circuit further include: the control with first controllable switch and second controllable switch
The connected processor in end processed, for according to the voltage value of the input power and/or the voltage value of the first capacitor device, control
The open and close of first controllable switch and second controllable switch.
In addition, being applied to as described in any of the above-described the present invention also provides a kind of control method of high pressure BOOST circuit
High pressure BOOST circuit, comprising:
It obtains in the voltage value and/or the high pressure BOOST circuit of the input power of the high pressure BOOST circuit connection
The charging situation of first capacitor device；Wherein, the charging situation includes uncharged state, charged state and charging complete state；
According to the voltage value of the input power and/or the charging situation, in the high pressure BOOST circuit is controlled
The open and close of one controllable switch and the second controllable switch, to be charged to the first capacitor device using the input power
The charging complete state completes the precharge of the first capacitor device.
Optionally, described according to the voltage value of the input power and/or the voltage value of the first capacitor device, control institute
State the turn-on and turn-off of the first controllable switch and the second controllable switch in high pressure BOOST circuit, comprising:
Judge whether the voltage value of the input power is greater than first threshold；
If so, the closure of control second controllable switch；
Judge whether the charging situation is the charging complete state；
If the charging complete state, then the disconnection of second controllable switch is controlled, first controllable switch closes
It closes.
Optionally, the disconnection of control second controllable switch is also wrapped after first controllable switch is closed
It includes:
To the first switch tube and second switch progress PWM control in the high pressure BOOST circuit.
A kind of high pressure BOOST circuit provided by the present invention, comprising: the first inductor, first switch tube, second switch
Pipe, first diode, the second diode, first capacitor device, the first controllable switch and charging circuit；Wherein, first inductor
First end its common end that is connected with the anode of first diode is connected with the first end of first switch tube, the cathode of first diode
Its common end that is connected with the anode of the second diode is connected with the first end of first capacitor device, and the second end of first capacitor device passes through
First controllable switch is connected with the second end of first switch tube, the first end phase of the second end and second switch of first switch tube
Even, the second end of the second end of the first inductor and second switch is for connecting input power, the cathode of the second diode and
The second end of second switch is for connecting load；Charging circuit is connect with first capacitor device, for disconnected in the first controllable switch
When opening, first capacitor device is charged to charging complete state, the voltage of first capacitor device is made to reach stationary value；
As it can be seen that the present invention passes through the setting of the first controllable switch and charging circuit, it can be to first switch tube and second
Before switching tube carries out control starting, in the case where the first controllable switch disconnects, using plugging in circuit for first capacitor device
It is charged to charging complete state, so as to guarantee first by the type selecting of component and first capacitor device in charging circuit
The voltage of capacitor can charge to the above stationary value of secure threshold, and the system of avoiding needs the electricity of quick sampling first capacitor device
The process of pressure reduces system control difficulty.In addition, the present invention also provides a kind of control methods of high pressure BOOST circuit, together
Sample has above-mentioned beneficial effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structural schematic diagram of high pressure BOOST circuit in the prior art；
Fig. 2 is a kind of structural schematic diagram of high pressure BOOST circuit provided by the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of another kind high pressure BOOST circuit provided by the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of another kind high pressure BOOST circuit provided by the embodiment of the present invention；
Fig. 5 is a kind of flow chart of the control method of high pressure BOOST circuit provided by the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Referring to FIG. 2, Fig. 2 is a kind of structural schematic diagram of high pressure BOOST circuit provided by the embodiment of the present invention.The height
Pressing BOOST circuit may include: the first inductor 10 (L), 11 (Q of first switch tube1), 12 (Q of second switch2), the one or two pole
13 (D of pipe1), 14 (D of the second diode2), 15 (C of first capacitor devicefly), 16 (S of the first controllable switch1) and charging circuit 20；
Wherein, the first end of the first inductor 10 is connected its common end and first switch tube with the anode of first diode 13
11 first end is connected, and the cathode of first diode 13 is connected its common end and first capacitor device with the anode of the second diode 14
15 first end is connected, and the second end of first capacitor device 15 passes through the second end phase of the first controllable switch 16 and first switch tube 11
Even, the second end of first switch tube 11 is connected with the first end of second switch 12, the second end and second of the first inductor 10
For connecting input power, the cathode of the second diode 14 and the second end of second switch 12 are used for the second end of switching tube 12
Connection load (C2)；
Charging circuit 20 is connect with first capacitor device 15, is used for when the first controllable switch 16 disconnects, by first capacitor device
15 are charged to charging complete state, and the voltage of first capacitor device 15 is made to reach stationary value.
It is understood that the purpose of the present embodiment can be to pass through 16 He of the first controllable switch in high pressure BOOST circuit
The setting of charging circuit 20 makes to be controlled (such as pulse width modulation (PWM) control to first switch tube 11 and second switch 12
System) before, it can be charged using charging circuit 20 to first capacitor device 15 in the case where the first controllable switch 16 is turned off
(precharge) allows the charging situation of first capacitor device 15 to be charged to charging complete state, i.e. first capacitor device 15 is equivalent to
Open circuit, the voltage value of first capacitor device 15 can achieve relatively-stationary numerical value (stationary value), to guarantee the first controllable switch
When controlling after 16 closures first switch tube 11 and second switch 12, the voltage of first capacitor device 15 has promoted safety
Stationary value (the corresponding numerical value of charging complete state) more than threshold value not only reduces first switch tube 11 and second switch 12 etc.
The voltage stress of device particular avoids the case where second switch 12 is subjected to entire input voltage, reduces second and opens
Close the voltage stress of pipe 12；And the type selecting and correspondence of circuit element and first capacitor device 15 in charging circuit 20 can be passed through
Charge power supply setting, the stationary value after determining 15 charging complete state of first capacitor device, avoid system needs quickly adopt
The case where voltage of sample first capacitor device is controlled reduces system control difficulty.
That is, the precharge that charging circuit 20 carries out first capacitor device 15 in the present embodiment, it can be by the first electricity
The voltage of container 15 is charged to stationary value (the corresponding voltage value of charging complete state), and the stationary value can be greater than or equal to peace
Full threshold value (guaranteeing that first switch tube 11 and second switch 12 use safe threshold value), and it is less than or equal to first capacitor device 15
Voltage rating.
It is corresponding, it, can be by designer according to reality to the particular circuit configurations of charging circuit 20 in this present embodiment
With scene and user demand self-setting, can use other power supplys as charge power supply is the charging of first capacitor device 15, is such as filled
Circuit 20 may include the other power supplys and corresponding controllable switch for being connected to 15 both ends of first capacitor device, to utilize other electricity
First capacitor device 15 is charged to charging complete state by source, i.e., is charged to the voltage value of first capacitor device 15 and other power supplys
The equal stationary value of voltage value.It can also be directly the charging of first capacitor device 15 using out-put supply as charge power supply, such as fill
Circuit 20 may include being connected to controllably opening between the second end of first capacitor device 15 and the second end of second switch 12
Pass and partial pressure device (such as derided capacitors), i.e. controllable switch and partial pressure device are connected on the second end and second of first capacitor device 15
Between the second end of switching tube 12, first capacitor device 15 is charged to charging complete state using out-put supply, i.e., by first
The voltage value of capacitor 15 is charged to stationary value corresponding with the voltage value of out-put supply.As long as charging circuit 20 can for
When controllable switch in itself circuit is connected, first capacitor device 15 is charged to charging complete state, i.e., by first capacitor device 15
Voltage value be charged to stationary value, the present embodiment does not do any restrictions to this.
Specifically, as shown in Fig. 2, charging circuit 20 may include: the second capacitor (C2) and the second controllable switch (S2)；
Wherein, the first end of the second capacitor is connected with the second end of first capacitor device 15, and the second end of the second capacitor passes through second
Controllable switch is connected with the second end of second switch 12.Output can be utilized by the second controllable switch of closure before opening machine
First capacitor device 15 is charged to charging complete state by power supply, makes the voltage value of first capacitor device 15 and the voltage value of out-put supply
It is corresponding, then by the first controllable switch of closure 16 and the second controllable switch is disconnected, it realizes to existing high pressure BOOST circuit
Optimization；And the voltage that can not need system quick sampling first capacitor device 15 is controlled, due to charging complete state
The voltage value phase of the stationary value of first capacitor device 15 and the capacity and input power of first capacitor device 15 and second capacitor
It is corresponding, it is only necessary to type selecting be carried out to the capacitance of first capacitor device 15 and the second capacitor, the voltage value pair of input power can be obtained
The stationary value of the first capacitor device 15 for the charging complete state answered reduces system control difficulty.Such as optional and first capacitor
Second capacitor of the identical capacitance of device 15 makes the voltage value (stationary value) of the first capacitor device 15 of charging complete state for input electricity
The voltage value of source half.
Further, as shown in figure 3, charging circuit 20 can also include: the second inductor (L2)；Wherein, first capacitor
15 (C of devicefly) second end be connected its common end with the first end of the second inductor by 16 (S of the first controllable switch1) and first
The second end of switching tube 11 is connected, the second end of the second inductor and the second capacitor (C2) first end be connected.Such as Fig. 4 institute
Show, charging circuit 20 can also include: resistor (R)；Wherein, 15 (C of first capacitor devicefly) second end and resistor
One end is connected its common end by 16 (S of the first controllable switch1) be connected with the second end of first switch tube 11, the second of resistor
End and the second capacitor (C2) first end be connected.The present embodiment is unrestricted to this.
It should be noted that for the particular type of each circuit components in high pressure BOOST circuit provided by the present embodiment
Number and type, can be by designer according to practical scene and user demand self-setting, as shown in Fig. 2, first switch tube 11
Can IGBT be selected to manage with second switch 12, i.e., the first end of the collector of first switch tube 11 and the first inductor 10 and
The anode of first diode 13 is connected, and the emitter of first switch tube 11 is connected with the collector of second switch 12, and second opens
The emitter for closing pipe 12 is connected by the second controllable switch with the second end of the second capacitor, first switch tube 11 and second switch
The grid of pipe 12 is respectively used to connect corresponding driving pulse output end；First switch tube 11 and second switch 12 can also
To be set as other switching tubes such as metal-oxide-semiconductor.Likewise, the first controllable switch 16 and the second controllable switch in Fig. 2 can also be with
Select metal-oxide-semiconductor or other controllable switches.The present embodiment does not do any restrictions to this.
It is corresponding, for the concrete specification of each circuit components in high pressure BOOST circuit, can voluntarily be set by designer
It sets, such as controls for convenience, it can be by the 15 (C of first capacitor device in Fig. 2fly) and the second capacitor be set as same capacitance (hold
Value), make the half of the voltage input power after the completion of being pre-charged on first capacitor device 15, i.e. the first electricity of charging complete state
The voltage value of container 15 and the second capacitor is equal and is the voltage value half of input power.The present embodiment does not do this any
Limitation.
It is understood that this implementation passes through the setting of the first controllable switch 16 and charging circuit 20, make such as single-chip microcontroller
Processor can control 16 He of the first controllable switch according to the voltage value of input power and/or the voltage value of first capacitor device 15
The open and close of controllable switch in charging circuit 20 realizes the precharge to first capacitor device 15.As shown in Fig. 2, high pressure
BOOST circuit can also include: the processor being connected with the control terminal of the first controllable switch 16 and the second controllable switch, be used for root
According to the voltage value of input power and/or the voltage value of first capacitor device 15, the first controllable switch 16 and the second controllable switch are controlled
Open and close.
Specifically, for the specific control method of high pressure BOOST circuit, it can be by designer's self-setting, such as Fig. 2 institute
Show, when the voltage of input power is greater than first threshold, can control the second controllable switch closure, input power passes through the first electricity
Sensor 10, first diode 13, the second controllable switch charge to first capacitor device 15 and the second capacitor, so that the first electricity
After the voltage of container 15 reaches stationary value, the disconnection of the second controllable switch can control, the first controllable switch 16 closure completes first
The pre-charge operation of capacitor 15.PWM control can be carried out to first switch tube 11 and second switch 12 again at this time, make first
Switching tube 11 and the voltage stress of second switch 12 reduce, especially the voltage stress of second switch 12.As long as can be real
Now to the precharge of the first capacitor device 15 in high pressure BOOST circuit, the present embodiment does not do any restrictions to this.
In the present embodiment, the embodiment of the present invention passes through the setting of the first controllable switch 16 and charging circuit 20, can be right
Before first switch tube 11 and second switch 12 carry out control starting, in the case where the first controllable switch 16 disconnects, using straight
It connects charging circuit 20 and first capacitor device 15 is charged to charging complete state, so as to pass through the component in charging circuit 20
With the type selecting of first capacitor device 15, guarantees that the voltage of first capacitor device 15 can charge to the above stationary value of secure threshold, avoid
System needs the process of the voltage of quick sampling first capacitor device 15, reduces system control difficulty.
Based on the above embodiment, the second controllable switch and the second capacitor are arranged into charging circuit shown in Fig. 4 for Fig. 2
High pressure BOOST circuit, the present embodiment can by the control to the first controllable switch and the second controllable switch, realize to first
The precharge of capacitor.Specifically, referring to FIG. 5, Fig. 5 is a kind of high pressure BOOST circuit provided by the embodiment of the present invention
The flow chart of control method.This method may include:
Step 101: in the voltage value and/or high pressure BOOST circuit for obtaining the input power of high pressure BOOST circuit connection
The charging situation of first capacitor device；Wherein, charging situation includes uncharged state, charged state and charging complete state；
It is understood that the purpose of this step can be to be controlled (such as PWM to first switch tube and second switch
Control) before, if the processor of single-chip microcontroller is by obtaining the voltage value of input power and/or the charging situation of first capacitor device,
With according to the charging situation of the voltage value of input power and/or first capacitor device to the first controllable switch and the second controllable switch into
Row control, thus the charging (precharge) using input power to first capacitor device.
Specifically, obtaining the voltage value of input power and/or the charging feelings of first capacitor device for processor in this step
The concrete mode of condition can such as use and existing skill by designer according to practical scene and user demand self-setting
The same or similar mode of voltage acquiring method in art obtains the voltage value of input power, can use first capacitor device and
The time of the capacitance of two capacitors, the voltage value of input power and the shutdown of the first controllable switch and the conducting of the second controllable switch determines
The charging situation of first capacitor device, the present embodiment do not do any restrictions to this.
Step 102: according to the voltage value of input power and/or the charging situation of first capacitor device, controlling high pressure BOOST electricity
The open and close of the first controllable switch and the second controllable switch in road, to be charged to first capacitor device using input power
Charging complete state completes the precharge of first capacitor device.
It should be noted that the purpose of this step can for processor using obtain input power voltage value and/or
The charging situation of first capacitor device controls the open and close of the first controllable switch and the second controllable switch, in first switch
Before pipe and second switch are controlled, the precharge to first capacitor device is realized.
It is corresponding, for controlling high pressure according to the voltage value of input power and/or the charging situation of first capacitor device
The detailed process of the open and close of the first controllable switch and the second controllable switch in BOOST circuit, can be by designer
Self-setting such as can first judge whether the voltage value of input power is greater than first threshold；If so, the second controllable switch of control
Closure, charged using input power to first capacitor device；Whether the charging situation for judging first capacitor device again is charging
Completion status；If charging complete state, then the disconnection of the second controllable switch is controlled, the first controllable switch closure is completed to the
The precharge of one capacitor.That is, the of charging complete state can be made by the type selecting of the capacitance to the second capacitor
The voltage value (stationary value) of one capacitor is greater than or equal to secure threshold and (it is safe to guarantee that first switch tube and second switch use
Threshold value), so as to by the charging situation of first capacitor device whether be charging complete state judgement, determine first capacitor
Whether the voltage value of device is greater than second threshold, avoids the real-time sampling of the voltage value to first capacitor device.Can also directly it judge
Whether the voltage value of input power is greater than first threshold, if so, the closure of the second controllable switch of control, utilizes input power pair
First capacitor device charges, and after the corresponding predetermined time, that is, determines that first capacitor device is charged to charging complete shape
After state, the disconnection of the second controllable switch is controlled, the first controllable switch closure completes the precharge to first capacitor device.This implementation
Example does not do any restrictions to this.
Specifically, controlling the open and close of the first controllable switch and the second controllable switch for processor in this step
Concrete mode, can be using realizing, as processor can lead to existing the same or similar mode of controllable switch control mode
It crosses to the control terminal of the first controllable switch and the second controllable switch and sends low and high level signal, control the first controllable switch and second
The open and close of controllable switch.The present embodiment does not do any restrictions to this.
It is understood that the present embodiment can also include after completing the precharge of first capacitor device, to high pressure BOOST circuit
In first switch tube and second switch the step of being controlled, if processor is in the disconnection for controlling the second controllable switch, the
After one controllable switch closure, PWM control can also be carried out to first switch tube and second switch.Specifically, for processor
To the concrete mode that first switch tube and second switch are controlled, can use in the prior art as PWM is controlled
The same or similar mode of control method realizes that the present embodiment is unrestricted to this.
In the present embodiment, the embodiment of the present invention passes through according to the voltage value of input power and/or the voltage of first capacitor device
Value controls the open and close of the first controllable switch and the second controllable switch in high pressure BOOST circuit, can open to first
Before pass pipe and second switch carry out control starting, first capacitor device is charged into charging complete state using input power, it is real
The precharge of existing first capacitor, reduces the voltage stress of first switch tube and second switch, particular avoids second switch
Pipe is subjected to the case where entire input voltage, reduces the voltage stress of second switch, improves making for high pressure BOOST circuit
Use the service life；And the case where system of can avoid needs the voltage of quick sampling first capacitor device to be controlled, reduces system control
Difficulty processed.
Each embodiment is described in a progressive manner in specification, the highlights of each of the examples are with other realities
The difference of example is applied, the same or similar parts in each embodiment may refer to each other.For method disclosed in embodiment
Speech, since it is corresponding with circuit disclosed in embodiment, so being described relatively simple, related place illustrates referring to circuit part
?.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method or equipment for including the element.
The control method of a kind of high pressure BOOST circuit provided by the present invention and high pressure BOOST circuit is carried out above
It is discussed in detail.Used herein a specific example illustrates the principle and implementation of the invention, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention.It should be pointed out that for the common skill of the art
, without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for art personnel, these change
It is also fallen within the protection scope of the claims of the present invention into modification.
Claims (10)
1. a kind of high pressure BOOST circuit characterized by comprising the first inductor, first switch tube, second switch, first
Diode, the second diode, first capacitor device, the first controllable switch and charging circuit；
Wherein, the first end of first inductor its common end that is connected with the anode of the first diode is opened with described first
Close pipe first end be connected, the cathode of the first diode be connected with the anode of second diode its common end with it is described
The first end of first capacitor device is connected, and the second end of the first capacitor device is opened by first controllable switch with described first
The second end for closing pipe is connected, and the second end of the first switch tube is connected with the first end of the second switch, and described first
The second end of the second end of inductor and the second switch for connecting input power, the cathode of second diode and
The second end of the second switch is for connecting load；
The charging circuit is connect with the first capacitor device, is used for when first controllable switch disconnects, by described first
Capacitor is charged to charging complete state, and the voltage of the first capacitor device is made to reach stationary value.
2. high pressure BOOST circuit according to claim 1, which is characterized in that the charging circuit includes: the second capacitor
With the second controllable switch；
Wherein, the first end of second capacitor is connected with the second end of the first capacitor device, second capacitor
Second end is connected by second controllable switch with the second end of the second switch, the stationary value and first electricity
The voltage value of the capacity and the input power of container and second capacitor is corresponding.
3. high pressure BOOST circuit according to claim 2, which is characterized in that the charging circuit further include: the second inductance
Device；
Wherein, the second end with the first end of the second inductor of the first capacitor device are connected its common end by described first can
Control switch is connected with the second end of the first switch tube, and the of the second end of second inductor and second capacitor
One end is connected.
4. high pressure BOOST circuit according to claim 2, which is characterized in that the charging circuit further include: resistor；
Wherein, the second end with the first end of resistor of the first capacitor device its common end that is connected controllably are opened by described first
Pass is connected with the second end of the first switch tube, the first end phase of the second end of the resistor and second capacitor
Even.
5. high pressure BOOST circuit according to claim 2, which is characterized in that the first switch tube and described second is opened
Closing pipe is IGBT pipe；
Wherein, the collector of the first switch tube and the first end of first inductor and the anode of the first diode
It is connected, the emitter of the first switch tube is connected with the collector of the second switch, the transmitting of the second switch
Pole is connected by second controllable switch with the second end of second capacitor, and the first switch tube and described second is opened
The grid for closing pipe is respectively used to connect corresponding driving pulse output end.
6. high pressure BOOST circuit according to claim 2, which is characterized in that the first capacitor device and second electricity
The capacitor of container is equal；
Corresponding, the stationary value is the half of the voltage value of the input power.
7. according to the described in any item high pressure BOOST circuits of claim 2 to 6, which is characterized in that further include: with described first
The processor that controllable switch is connected with the control terminal of second controllable switch, for the voltage value according to the input power
And/or the voltage value of the first capacitor device, it controls the closure of first controllable switch and second controllable switch and breaks
It opens.
8. a kind of control method of high pressure BOOST circuit, which is characterized in that be applied to as claim 2 to 7 is described in any item
High pressure BOOST circuit, comprising:
Obtain first in the voltage value and/or the high pressure BOOST circuit of the input power of the high pressure BOOST circuit connection
The charging situation of capacitor；Wherein, the charging situation includes uncharged state, charged state and charging complete state；
According to the voltage value of the input power and/or the charging situation, first controlled in the high pressure BOOST circuit can
The open and close of control switch and the second controllable switch, it is described to be charged to the first capacitor device using the input power
Charging complete state completes the precharge of the first capacitor device.
9. the control method of high pressure BOOST circuit according to claim 8, which is characterized in that described according to the input
The voltage value of the voltage value of power supply and/or the first capacitor device controls the first controllable switch in the high pressure BOOST circuit
With the turn-on and turn-off of the second controllable switch, comprising:
Judge whether the voltage value of the input power is greater than first threshold；
If so, the closure of control second controllable switch；
Judge whether the charging situation is the charging complete state；
If the charging complete state, then the disconnection of second controllable switch, the first controllable switch closure are controlled.
10. the control method of high pressure BOOST circuit according to claim 9, which is characterized in that the control described second
The disconnection of controllable switch, after first controllable switch is closed, further includes:
To the first switch tube and second switch progress PWM control in the high pressure BOOST circuit.
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| CN201910549740.3A CN110299837A (en) | 2019-06-24 | 2019-06-24 | A kind of high pressure BOOST circuit and its control method |
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| CN201910549740.3A CN110299837A (en) | 2019-06-24 | 2019-06-24 | A kind of high pressure BOOST circuit and its control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707911A (en) * | 2019-10-16 | 2020-01-17 | 科华恒盛股份有限公司 | Boost circuit and control method thereof |
| WO2021115032A1 (en) | 2019-12-13 | 2021-06-17 | 科华恒盛股份有限公司 | Multi-level boost circuit, and apparatus and system thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070096795A1 (en) * | 2005-11-01 | 2007-05-03 | Catalyst Semiconductor, Inc. | LED bias current control using adaptive fractional charge pump |
| CN206506339U (en) * | 2017-03-15 | 2017-09-19 | 漳州科华技术有限责任公司 | A kind of BUCK charging devices |
| CN108847769A (en) * | 2018-06-22 | 2018-11-20 | 阳光电源股份有限公司 | Three level BOOST devices of one kind and its control method |
| CN108900078A (en) * | 2018-08-03 | 2018-11-27 | 阳光电源股份有限公司 | A kind of striding capacitance type three-level converter and its control method |
| CN109039061A (en) * | 2018-08-29 | 2018-12-18 | 阳光电源股份有限公司 | A kind of more level BOOST devices |
| TW201931747A (en) * | 2017-12-28 | 2019-08-01 | 愛爾蘭商伊頓智慧動力有限公司 | A charge and discharge balance converter for UPS |
-
2019
- 2019-06-24 CN CN201910549740.3A patent/CN110299837A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070096795A1 (en) * | 2005-11-01 | 2007-05-03 | Catalyst Semiconductor, Inc. | LED bias current control using adaptive fractional charge pump |
| CN206506339U (en) * | 2017-03-15 | 2017-09-19 | 漳州科华技术有限责任公司 | A kind of BUCK charging devices |
| TW201931747A (en) * | 2017-12-28 | 2019-08-01 | 愛爾蘭商伊頓智慧動力有限公司 | A charge and discharge balance converter for UPS |
| CN108847769A (en) * | 2018-06-22 | 2018-11-20 | 阳光电源股份有限公司 | Three level BOOST devices of one kind and its control method |
| CN108900078A (en) * | 2018-08-03 | 2018-11-27 | 阳光电源股份有限公司 | A kind of striding capacitance type three-level converter and its control method |
| CN109039061A (en) * | 2018-08-29 | 2018-12-18 | 阳光电源股份有限公司 | A kind of more level BOOST devices |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707911A (en) * | 2019-10-16 | 2020-01-17 | 科华恒盛股份有限公司 | Boost circuit and control method thereof |
| WO2021115032A1 (en) | 2019-12-13 | 2021-06-17 | 科华恒盛股份有限公司 | Multi-level boost circuit, and apparatus and system thereof |
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