CN105871232A - Power source control device capable of dynamically adjusting driving ability - Google Patents
Power source control device capable of dynamically adjusting driving ability Download PDFInfo
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- CN105871232A CN105871232A CN201510033887.9A CN201510033887A CN105871232A CN 105871232 A CN105871232 A CN 105871232A CN 201510033887 A CN201510033887 A CN 201510033887A CN 105871232 A CN105871232 A CN 105871232A
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Abstract
The invention relates to a power source control device capable of dynamically adjusting driving ability. The power source control device comprises a rectifying unit, a power factor correction unit, a power source conversion unit and a feedback unit; the rectifying unit receives an alternating current input power source, rectifies the alternating current input power source to obtain a direct current power source, and transmits the direct current power source to the power factor correction unit for performing power factor correction processing on the direct current power source; a generated power factor corrected power source is transmitted to the power source conversion unit; the feedback unit is electrically connected with the power source conversion unit, so that a control loop can be formed; and the pulse width modulation driving controller of the power source conversion unit carries out adjustment processing according to the feedback signals of the feedback unit so as to control a switching transistor, so that the power factor corrected power source can be converted into an output power source which is provided for an external load. With the power source control device of the invention adopted, the optimal on current of the switching transistor can be realized, and electromagnetic interference margin can be increased, and switching loss can be reduced.
Description
Technical field
The invention relates to the power control of a kind of dynamic driving capacity adjustment, in particular for just
To (Forward) framework, full-bridge Power convert framework, half bridge power converting structure, boosting (Boost) power supply
Converting structure, the power conversion unit of blood pressure lowering (Buck) Power convert framework, utilize and perform regulation process,
According to the state of switching electric crystal, and consider electromagnetic interference (EMI) and switch cost simultaneously, and dynamic is adjusted
The produced pulse width modulation of joint drives signal, reaches dynamically to regulate the driving force of switching electric crystal
Purpose also improves electric quality and overall source conversion efficiency.
Background technology
Power converter topology is the most important for the most flourish electronic industry, because different electronics
Product needed difference voltage or the power supply of electric current and operate.Such as, IC (IC) needs 5V or 3V,
Electro-motor needs 12V unidirectional current, and the fluorescent tube in liquid crystal display needs the power supply of more high pressure, as
1150V.Accordingly, it would be desirable to different electrical power transducer is required to meet.
In the prior art, suitching type (switch type) power converter topology is the power supply that current electronics industry is conventional
One of switch technology, mainly by high-frequency pulse width modulation (PWM) signal to drive switching electricity
The conducting of crystal (or claim drive electric crystal), and then control inductance that crystalline substance electric with switching be connected in series (or transformation
Device) electric current, due to inductance itself have keep electric current effect, prevent moment from changing, thus when switch
When electric crystal was closed by moment, the most original electric current will not change immediately, but relatively slow change,
Inductance is charged or discharged, reaches to change the purpose of output voltage.
With reference to Fig. 1, the schematic diagram of the driving force of prior art regulation switching electric crystal, wherein provide and drive
The driving force of the pre-driver (pre-driver) of dynamic signal VD1 is fixing for induced current/remove electric current
(source current/sink current) framework.As it is shown in figure 1, switch the driving of electric crystal M1 for regulation
Ability, configurable first gate resistance RG1, the second gate resistance RG2, switching diode D1 and
Earth resistance (or claiming pull down resistor) RGG, wherein the first gate resistance RG1 and the second gate resistance RG2
Being to connect and be connected to switch the gate G of electric crystal M1, switching diode D1 is and the second gate resistance
RG2 is connected in parallel, and earth resistance RGG is connected to switch gate G and the ground connection of electric crystal M1
GND.Therefore, when opening switching electric crystal M1, drive signal VD1 can control to drive electric current IG1
The gate of switching electric crystal M1 is arrived via the first gate resistance RG1 and the second gate resistance RG2
G, wherein switching diode D1 closes because of reverse-biased, and then improves the voltage of gate G and make switching electricity brilliant
Body M1 turns on.It addition, when closing switching electric crystal M1, it is possible to decrease drive signal VD1 so that
The voltage of gate G reduces because closing electric current IG2, and then closes switching electric crystal M1, wherein switches
Diode D1 is because of along partially turning on, so closedown electric current IG2 can be via switching diode D1 and the second lock
Electrode resistance RG2, without flowing through the first gate resistance RG1, meanwhile, closes electric current IG2 mat ground connection electricity
Hinder RGG and guide ground connection GND.
Therefore, utilize and suitably set the first gate resistance RG1, the second gate resistance RG2, earth resistance
The resistance value of RGG, and the electric parameter of switching diode D1, i.e. can reach regulation switching electric crystal
The purpose of the driving force of M1.
For example, for the shutoff operation of switching electric crystal M1, when the first gate resistance RG1 sets
It is 0 ohm and the second gate resistance RG2 when being set as 22 ohm, source of the drawing electricity of switching electric crystal M1
The fall time of pressure is 80ns, and the Miller platform of the lock source voltage of switching electric crystal M1 is about 200ns,
And when the first gate resistance RG1 is set as that the total resistance value of 100 ohm and the second gate resistance RG2 sets
When being set to 22 ohm, can elongate fall time as 104ns, simultaneously the lock source voltage of switching electric crystal M1
Miller platform elongate about 300ns.Therefore, it is possible to decrease the first gate resistance RG1 and the second gate electricity
The resistance of resistance RG2, changes with raising conversion effect, but cannot improve EMI.But, increase by the first gate
Resistance RG1 and the resistance of the second gate resistance RG2, though fall time can be elongated and improve EMI, but
It is when Miller platform is long, the conducting resistance switching electric crystal M1 can be caused cannot to reduce rapidly, no
It is beneficial to conversion efficiency.
It will be apparent that it is that mat adjusts the first gate resistance RG1 that the driving of above-mentioned prior art can regulate the practice
And control to switch the conducting speed of electric crystal M1, utilize the second gate resistance RG2 to adjust switching electricity simultaneously
The closing velocity of crystal M1.But, the shortcoming of prior art is the first gate that can only be differently configured
Resistance RG1 and the second gate resistance RG2 and change driving signal VD1 to switching electric crystal M1 beat
ETAD expected time of arrival and departure and shut-in time, although can moderate reduction switch cost, but electromagnetic interference cannot be reduced simultaneously.
That is, when needs conducting switching electric crystal, the conducting electric current under original closed mode is 0 or levels off to
0, if during so driving voltage now rises very fast, the help to reducing switch cost is little, on the contrary
The harmful effect of EMI can be increased.On the other hand, when switching electric crystal and being the most partially ON or fully on,
Conducting electric current is the biggest, if the now rising of driving voltage is relatively slow or declines relatively slow, and all can be whole
Handoff procedure causes no small power consumption.
Hence it is highly desirable to a kind of power control, utilize and there is the function dynamically regulating driving force,
Increase elasticity during reality application, use expansion application, operate especially with analogy or numerical digit
Pulse width modulation drives controller, and mat feedback signal is adjusted processing, the driving to switching electric crystal
Ability is controlled, and then reaches dynamically to regulate driving, can examine for the state of switching electric crystal simultaneously
Considering electromagnetic interference (EMI) and switch cost, dynamically regulation pulse width modulation drives signal, promotes electric product
Matter, uses the above-mentioned problem of the prior art of solution.
Summary of the invention
Present invention is primarily targeted at the power control that a kind of dynamic driving capacity adjustment is provided, bag
Include rectification unit, power factor correction unit, power conversion unit and feedback unit, wherein rectification list
Unit receives alternating current input power supplying, and is rectified into DC source and is sent to power factor correction unit, to enter
Row PFC processes, and produces power factor correcting power supply and be sent to power conversion unit, this
Outward, feedback unit electrical power source converting unit and form control loop, and depended on by power conversion unit
According to the feedback signal from feedback unit, power factor correcting power supply is converted into out-put supply, with for
Answer external loading.
Specifically, power conversion unit include transformator, pulse width modulation (PWM) drive controller,
Switching electric crystal, output diode and output capacitance, wherein transformator comprises first siding ring and secondary
Lateral coil, switching electric crystal is connected to one end of first siding ring, and PWM drive controller is adjusted
Process with control switching electric crystal, and the second siding ring of transformator be connected to concatenation output diode with
And output capacitance, and output capacitance be connected in parallel to load, so being produced out-put supply by output capacitance
And it is supplied to load.
Feedback unit include the first resistance, the second resistance, the 3rd resistance, thyristor (Thyristor) and
Photo-coupler, wherein the first resistance, the second resistance, the 3rd resistance are for sequentially to concatenate, and the first resistance and
The concatenation point of the second resistance is connected to export diode and the concatenation point of output capacitance, in order to receive output electricity
The gate terminal being connected to thyristor is put in concatenating of source, the second resistance and the 3rd resistance, and the positive pole of thyristor
End connects output capacitance, and photo-coupler is attached between negative pole end and first resistance of thyristor.
Additionally, photo-coupler produces feedback signal and is back to power conversion unit.
The PWM drive controller of power conversion unit can be adjusted processing and producing according to feedback signal
Raw PWM drive signal, turns on and off operation in order to control, drive switching electric crystal.
The switching electric crystal of power conversion unit can be that N-type switching device, such as N channel gold oxygen half electricity is brilliant
Body (N-channel Metal-Oxide Semiconductor, NMOS) or NPN two-carrier electric crystal
(Bipolar Transistor), and PWM drive controller can be hard by the combined one-tenth of multiple individual electronic components
Body circuit and realize, or by central processing unit (CPU) or microcontroller (MCU) mat perform software formula or
Firmware formula and realize, i.e. the PWM drive controller of the present invention may utilize analogical pattern operation, or
Operate in numerical digit mode completely.Especially, in power conversion unit at the regulation of PWM drive controller
Reason comprises the following steps:
At the beginning time, because the initial current under continuous conduction mode (CCM) is less or discontinuous conducting mould
Under formula (DCM), initial current is 0, so EMI factor need to be paid the utmost attention to so that PWM drives control
The first rise time that the driving voltage of device is risen to about 5V by 0V can suitably be elongated；
Then, because the voltage and current switching of switching electric crystal is complete, for reducing conduction loss, need
Quickly to draw high driving voltage to more than 8V, to guarantee that switching electric crystal enters saturation conduction so that lead
Energising resistance reduces as far as possible, i.e. shortens driving voltage and is risen above second rise time of about 8V by 5V；
Then, when to close switching electric crystal, conducting can be increased because the fall time of driving voltage is long
Loss, so needing to shorten the fall time of driving voltage, i.e. shortening driving voltage and being declined by more than 8V
The first fall time to about 5V；And
Suitably shorten driving voltage and be reduced to second fall time of 0V by about 5V.
Another object of the present invention is to provide the power control of a kind of dynamic driving capacity adjustment, bag
Including rectification unit, power factor correction unit, power conversion unit and feedback unit, wherein power supply turns
Change unit and comprise full-bridge Power convert framework, half bridge power converting structure, booster power converting structure and fall
One of them of voltage source converting structure, especially, the same mat of PWM drive controller carries out above-mentioned tune
Joint processes to control switching electric crystal, thus can reach the purpose dynamically regulating driving force.
Therefore, the PWM drive controller of power conversion unit can produce PWM according to feedback signal
Drive signal, in order to drive and control to switch electric crystal turn on and off operation, and then reach dynamically to adjust
The purpose of the driving force of joint switching electric crystal.Generally speaking, the present invention is that mat elongated for the first rise time,
And improve EMI effect, and utilize the second rise time of shortening, the first fall time and the second fall time,
And then minimizing switch cost, and promote the efficiency of overall Power convert operation, be well suited for being applied to into
Row Power convert also need to take into account the field of EMI and conversion efficiency simultaneously.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of the driving force of prior art regulation switching electric crystal.
Fig. 2 shows showing of the power control according to first embodiment of the invention dynamic driving capacity adjustment
It is intended to.
Fig. 3 show the first rise time of driving voltage in first embodiment of the invention, the second rise time,
The operation waveform schematic diagram of the first fall time and the second fall time.
Fig. 4 shows the oscillogram of the conducting operation of driving voltage in first embodiment of the invention.
Fig. 5 shows the oscillogram of the shutoff operation of driving voltage in first embodiment of the invention.
Fig. 6 shows the signal of the power control of second embodiment of the invention dynamic driving capacity adjustment
Figure.
Fig. 7 shows the schematic diagram of third embodiment of the invention.
Fig. 8 shows the schematic diagram of fourth embodiment of the invention.
Fig. 9 shows the schematic diagram of fifth embodiment of the invention.
Figure 10 show first rise time of PMOS in fifth embodiment of the invention, the second rise time,
The operation waveform schematic diagram of the first fall time and the second fall time.
Figure 11 shows the schematic diagram of sixth embodiment of the invention.
Figure 12 shows the schematic diagram of seventh embodiment of the invention.
Figure 13 shows the schematic diagram of eighth embodiment of the invention.
Figure 14 shows the schematic diagram of ninth embodiment of the invention.
Figure 15 shows the schematic diagram of tenth embodiment of the invention.
Wherein, description of reference numerals is as follows:
10 rectification units
20 power factor correction units
21 power factor correctors
22 inductance
23 diodes
24 electric capacity
25 electric crystals
30 power conversion units
31 pulse width modulations (PWM) drive controller
32 switching electric crystals
32A first switches electric crystal
32B second switches electric crystal
40 feedback unit
60 boost resistors
70 dropping resistors
80 first external power source unit
90 first external loading devices
C1 electric capacity
Co output capacitance
D1 switches diode
DD thyristor (Thyristor)
Do exports diode
DX assists diode
G gate
GND ground connection
IG1 drives electric current
IG2 closes electric current
Ion turns on electric current
L1 inductance
Lo outputting inductance
M1 switches electric crystal
MP Miller platform
P concatenates point
PH photo-coupler
Q1, Q2, Q3, Q4 switch electric crystal
R1 the first resistance
R2 the second resistance
R3 the 3rd resistance
RL loads
RG1 the first gate resistance
RG2 the second gate resistance
RGG earth resistance
T1, T1 ' first rise time
T2, T2 ' second rise time
T3, T3 ' first fall time
T4, T4 ' second fall time
TR1 transformator
Tf draws source voltage falling time
Tr draws source voltage rising time
TR1 transformator
TR2 transformator
V1 the first voltage
V2 the second voltage
VD1 drives signal
VD PWM drives signal
Vds draws source voltage
VH ceiling voltage
Vin input voltage
VL minimum voltage
Vo output voltage
Detailed description of the invention
Hereinafter coordinate graphic and reference that embodiments of the present invention are done more detailed description, make to be familiar with
Those skilled in the art can implement after studying this specification carefully according to this.
Refering to Fig. 2, the signal of the power control of first embodiment of the invention dynamic driving capacity adjustment
Figure.As in figure 2 it is shown, the power control of first embodiment dynamic driving capacity adjustment substantially wraps
Include rectification unit 10, power factor correction unit 20, power conversion unit 30 and feedback unit 40,
In order to the alternating current input power supplying with input voltage vin to be converted into the output electricity with output voltage Vo
Source, and provide output to outside load RL.
Specifically, rectification unit 10 receives alternating current input power supplying, and is rectified into DC source and is sent to
Power factor correction unit 20, and then utilize PFC to process and produce power factor correcting power supply,
Received by power conversion unit 30 again, and process through Power convert and produce out-put supply to supply load
RL.Feedback unit 40 is electrically connected to power conversion unit 40, in order to by the output voltage of out-put supply
Vo is converted into feedback signal FB, and is back to power conversion unit 30 so that power conversion unit 30 energy
Obtain the state of load, and the most dynamically regulate driving force, to improve overall power supply conversion efficiency.
Above-mentioned rectification unit 10, power factor correction unit 20 and feedback unit 40 can be by existing skills
Art realizes, and therefore the not emphasis of the technology of the present invention, is the most only briefly described.
Bridge rectifier that rectification unit 10 can be made up of four shown in figure and complete, and power because of
Number correction unit 20 typically mainly uses power factor corrector 21, and coordinates inductance 22, diode
23, electric capacity 24, electric crystal 25, to reach the function of correcting power factors.
Power conversion unit 30 include transformator TR1, pulse width modulation (PWM) drive controller 31,
Switch electric crystal 32, output diode Do and output capacitance Co, and transformator TR1 comprises primary side
Coil and second siding ring, and exporting diode Do is to concatenate to output capacitance Co, switches electric crystal 32
Being connected to one end of first siding ring, PWM drive controller 31 is adjusted processing and producing PWM
Drive signal VD, with control switching electric crystal 32 turn on and off operation.Additionally, second siding ring
It is concatenation extremely output diode Do and output capacitance Co, and output capacitance Co is to be connected in parallel to load
RL, and produced by output capacitance Co, and then out-put supply is to be supplied to load RL.
It is also preferred that the left PWM drive controller 10 can include microcontroller (MCU) or central processing unit (CPU)
Single wafer, or the circuit can being made up of multiple individual electronic components.Therefore, PWM drives and controls
Device 10 is to realize in numerical digit mode, and switching electric crystal 32 can be N-type switching device, comprises N channel
Gold oxygen half electric crystal (N-channel Metal-Oxide Semiconductor, NMOS) or NPN two-carrier
Electric crystal (Bipolar Transistor).
Furthermore, feedback unit 40 can include the first resistance R1, the second resistance R2, the 3rd resistance R3,
Thyristor (Thyristor) DD and photo-coupler PH, wherein the first resistance R1, the second resistance R2,
3rd resistance R3 is sequentially to concatenate, and the concatenation point of the first resistance R1 and the second resistance R2 is coupled to
Output diode Do and the concatenation point of output capacitance Co, in order to receive out-put supply, and the second resistance
The concatenation point of R2 and the 3rd resistance R3 is coupled to the gate terminal (G end) of thyristor DD, thyristor DD
Positive terminal (A end) be coupled to output capacitance Co, and photo-coupler PH is connected to thyristor DD
Negative pole end (K end) and the first resistance R1 between so that photo-coupler PH produce feedback signal FB,
And it is back to PWM drive controller 31.Especially, PWM drive controller 31 can be by feedback signal
FB and obtain load RL load condition, such as underloading or heavy duty, so via regulation process and produce
Having the PWM drive signal VD of suitable waveform, that uses control switching electric crystal 32 turns on and off behaviour
Make, and reduce EMI and switch cost.
For reducing the purpose of EMI and switch cost, the waveform with reference to Fig. 3 please be coordinate, with reference to
The conducting operation of Fig. 4 and Fig. 5 and the oscillogram of shutoff operation.More specifically, PWM drives and controls
The regulation of device 31 processes and can comprise the following steps that
In the first rise time T1, by the PWM drive signal VD of PWM drive controller 31
Driving voltage risen to the first voltage V1 by the minimum voltage VL of 0V；
In the second rise time T2, driving voltage is risen above more than first by the first voltage V1
The second voltage V2 of voltage V1 and reach ceiling voltage VH, wherein in order to begin to turn on switching electric crystal
32 and make source of the drawing voltage of switching electric crystal 32 to decline；
Maintain one section of Preset Time；
In the first fall time T3, by driving voltage by the ceiling voltage VH more than the second voltage V2
Drop to the first voltage V1；And
In the second fall time T4, driving voltage is reduced to by the first voltage V1 the minimum electricity of 0V
Pressure VL.
It is also preferred that the left the first above-mentioned voltage V1 can be 3V to 6V, and the second voltage V2 can be 7V extremely
9V.Additionally, switch source of the drawing voltage falling time of electric crystal 32 and draw source voltage rising time in output
It is less than about 200ns and about 100ns when power is 36W respectively, and the source voltage falling time of drawing refers to switching
Electric crystal 32 draw in turn on process source voltage by the highest draw source voltage drop to minimum draw source voltage time
Between, and this draws source voltage rising time and refers to that switching electric crystal 32 draws source voltage by minimum in closing process
The source voltage of drawing rises to the highest time drawing source voltage.Furthermore, when the first rise time T1, the second rising
Between T2, first fall time T3 and second fall time T4 be utilize mat strengthen or reduce PWM drive
The driving force of controller 31 and the most dynamically adjust, control.
Additionally, above-mentioned minimum voltage VL and ceiling voltage VH is dynamically adapted, use collocation difference
MOS or electric crystal, reduce effect of conducting/switch cost, promotes conversion efficiency.
For the practical operation feature of the present invention is the most clearly described, by the switching electric crystal 32 with NMOS
As example.
Specifically, the first voltage V1 is to begin to turn on switching electric crystal 32 so that switching electricity is brilliant
Source of the drawing voltage Vds of body 32 declines.Additionally, the first voltage V1 is about the Miller switching electric crystal 32
Platform, wherein Miller platform refers to that switching electric crystal 32 can maintain certain in the handoff procedure closing extremely conducting
The lock source voltage Vgs of certain value, and when the drain current Id switching electric crystal 32 is zero, the can be elongated
One rise time T1, to reduce electromagnetic interference (EMI), because during this period, drain current Id is zero,
Do not interfere with switch cost.That is, PWM can be reduced as far as possible and drives in the claimed range meeting EMI
The driving voltage of dynamic signal VD is risen to the rate of climb of the first voltage V1 by 0V.Meanwhile, as far as possible
Shorten the second rise time T2, first fall time T3 and second fall time T4 to reduce switch cost
And conduction losses is to a minimum, because drain current Id during this period is not zero, so speed is the slowest
Power consumption can be caused to increase, reduce overall transformation efficiency.Therefore, can strengthen or reduce PWM driving control by mat
The driving force of device 31 processed and the most dynamically adjusting control the first rise time T1, the second rise time T2,
First fall time T3 and second fall time T4.
Will be detailed below concrete effect that above-mentioned regulation processes.
First, less (the such as Power convert of initial turn-on electric current Ion under continuous conduction mode (CCM)
Time at the beginning), or under discontinuous conduction mode (DCM), initial turn-on electric current Ion is 0, so can be not required to
Consider switch cost, and only consider EMI factor, i.e. as far as possible the effect of compacting EMI, now, can be suitable
The first rise time T1 in elongation figure and reach.
PWM drive signal VD is risen to the second rise time T2 of about 8V by 5V, now,
The voltage and current switching of switching electric crystal 32 is complete, and conducting electric current Ion rises, therefore to subtract
Little conduction loss, needs quickly to draw high driving voltage to more than 8V, quick to guarantee to switch electric crystal 32
Enter saturation conduction, reduce conducting resistance as far as possible, reduce switch cost and conduction losses.
Driving voltage first fall time T3 substantially the second rise time T2 inverse process, this
Time, the voltage and current of switching electric crystal 32 not yet switches over, so PWM drive signal VD fall
If the low time is oversize, conduction loss will be increased, therefore, need to shorten first fall time T3, make to lead
Galvanization Ion quickly reduces.
Driving voltage second fall time T4 substantially the first rise time T1 inverse process, this
Time conducting electric current Ion relatively big, efficiency factor should be paid the utmost attention to, i.e. need suitably to shorten for the second fall time
T4, quick closedown switching electric crystal 32, make conducting electric current Ion drop to 0 or about 0.
Therefore, the present invention can be adjusted processing according to feedback signal, regulates optimized pulse width and adjusts
Become and drive signal, change the driving force of switching electric crystal (driving electric crystal), reach reduction EMI simultaneously
And the dual-use function of conduction losses, not only improve electric operation quality, and improve overall power supply conversion efficiency.
It addition, with further reference to Fig. 6, the power supply control of second embodiment of the invention dynamic driving capacity adjustment
The schematic diagram of device processed.It should be noted that the second embodiment power control of Fig. 6 is analogous to figure
The power control of 2 first embodiments, Main Differences electricity therein is transformator in the second embodiment
The polarity of the second siding ring of T1 is in contrast to first embodiment, and the Power convert in the second embodiment
Unit 30 is except including that transformator T1, pulse width modulation (PWM) drive controller 31, switching electricity brilliant
Body 32, output diode Do and output capacitance Co beyond, the most additionally include assist diode DX and
Outputting inductance Lo, and remaining element is the most identical, therefore, will be described below assisting diode DX and defeated
Go out the technical characteristic of inductance Lo, and repeat no more the technology of similar elements.
As shown in Figure 6, the anode of output diode Do is connected to one end of secondary side, assist diode
The anode of DX is connected to the other end of secondary side, and exports negative terminal and the auxiliary diode of diode Do
The negative terminal of DX is connected to one end of outputting inductance Lo, and the other end of outputting inductance Lo is connected to output
One end of electric capacity Co, the other end of output capacitance Co is connected to this other end of secondary side.Same,
Output capacitance Co is to be connected in parallel to load RL, and is produced by output capacitance Co, and then out-put supply
To be supplied to load RL.
Furthermore, the design architecture of Fig. 6 is belonging to forward (Forward) framework, and the design of Fig. 2
Framework is belonging to flyback (Flyback) framework, is two kinds of frameworks conventional in general Power convert control field.
The technology that the regulation of the invention described above processes also apply be applicable to other Power convert frameworks, such as full-bridge
Framework, half bridge architecture, or in order to control boosting (Boost) framework or the fall of the charging operations of rechargeable battery
Pressure (Buck) framework.Hereinafter by proposing this kind of circuit framework, to further illustrate the feature of the present invention,
Wherein Fig. 7, Fig. 8, Fig. 9 show the power supply control according to the present invention the three, the four, the 5th embodiment respectively
The schematic diagram of device processed, mainly makes the power conversion unit 30 of apparatus full bridge structure, and Figure 11, figure
12, Figure 13 shows showing of the power control according to the present invention the six, the seven, the 8th embodiment respectively
Being intended to, mainly power conversion unit 30 has half bridge architecture.
As it is shown in fig. 7, the present embodiment is in addition to the structure of PWM drive controller 31, remaining element
All being same as the embodiment of Fig. 2, therefore, the operation of similar elements will not be described in great detail.PWM drives control
Device 31 belongs to full-bridge Power convert framework, and comprises transformator T2, PWM drive controller 31, four
Individual switching electric crystal Q1, Q2, Q3 and Q4, auxiliary diode DX, outputting inductance Lo, export two poles
Body Do and output capacitance Co, wherein transformator TR2 comprises first siding ring and has centre tap
Second siding ring, and one end of second siding ring be connected to export diode Do anode, secondary side
The other end of coil is connected to assist the anode of diode DX, and the negative terminal of output diode Do is connected to auxiliary
Helping negative terminal and one end of outputting inductance Lo of diode DX, the other end of outputting inductance Lo is connected to
One end of output capacitance Co, the other end of output capacitance Co is connected to the centre tap of second siding ring,
And output capacitance Co is to be connected in parallel to load RL, and output capacitance Co produces out-put supply with supply
Give load RL.
Additionally, this PWM drive controller 31 is according to feedback signal FB from feedback unit 40, enter
Row regulation process to produce four PWM drive signal, in order to control respectively switch electric crystal Q1, Q2,
Q3 and Q4 turns on and off operation, and needed for different switching electric crystal Q1, Q2, Q3 and Q4
PWM drive signal has specific waveform relationship, and this is known prior art, retouches the most in detail at this
State.Noting however that, each PWM drive signal is the characteristic with above-mentioned Fig. 3 to Fig. 5,
Process in order to clearly to limit the regulation of PWM drive controller 31.
Four switchings electric crystal Q1, Q2, Q3 and Q4 in Fig. 7 are to utilize NPN two-carrier electricity brilliant
Body and realize, and in the example of Fig. 8, four switchings electric crystal Q1, Q2, Q3 and Q4 are NMOS,
Additionally, the example of Fig. 9 is to use two PMOS and two NMOS, its electric operation is as aforementioned
Embodiment, thus repeat no more.
With reference to Figure 10, the operation waveform of the voltage of the PWM drive signal of the 5th embodiment in display Fig. 9
Schematic diagram, and indicate PWM drive signal VD ' needed for the switching electric crystal of corresponding PMOS respectively
The first rise time T1 ', the second rise time T2 ', first fall time T3 ' and second decline
The waveform of time T4 '.It will be further appreciated that, use PMOS as switching electric crystal 32 time, be with
The driving voltage of corresponding NMOS is the most anti-phase, and the operation rising and declining also is reciprocal, just uses
Really control the action turned on and off of PMOS.
As shown in Figure 11 of sixth embodiment, PWM drive controller 31 belongs to half bridge power converting structure,
And comprise transformator T2, PWM drive controller 31, two switching electric crystal Q1 and Q2, auxiliary two
Polar body DX, outputting inductance Lo, output diode Do and output capacitance Co, wherein two switching electricity
Crystal Q1 and Q2 is NPN two-carrier electric crystal, and assist diode DX, outputting inductance Lo,
The connected mode of output diode Do and output capacitance Co is the same as Fig. 7, so repeating no more.
Additionally, the mode of two switching electric crystal Q1 and Q2 connections also belongs on the first siding ring of transformator T2
In prior art, repeat no more.It should be noted that at regulation performed by PWM drive controller 31
Reason is also the same as previous embodiment.
With further reference to the 7th embodiment schematic diagram and the 8th embodiment schematic diagram of Figure 13 of Figure 12, its
In in addition to switching electric crystal Q1 and Q2 of used different types, remaining element is identical.Figure 12's
Two switching electric crystal Q1 and Q2 are NMOS, and in fig. 13, use a NMOS and
Individual PMOS.7th embodiment and the 8th embodiment can reach the electric function of sixth embodiment equally.
Additionally, with reference to Figure 14, the schematic diagram of ninth embodiment of the invention, represent that having boosting (boost) turns
Change and the power control of dynamic driving capability adjustment function.Specifically, the power supply of the 9th embodiment
Control device and comprise PWM drive controller the 31, first switching electric crystal 32A, the second switching electric crystal
32B, boost resistor 60, dropping resistor 70, inductance L1 and electric capacity C1, drive mainly by PWM
Movement controller 31 is adjusted processing, defeated in order to by the relatively low pressure from the first external power source unit 80
Entering Power convert becomes the out-put supply of higher pressure to be supplied to the first external loading device 90, uses and reaches liter
Pressure (boost) function.Owing to the Power convert of boosting framework is general prior art, do not make specifically at this
Bright, but it is brilliant to the first switching electric crystal 32A and the second switching electricity to be absorbed in PWM drive controller 31
The individual electrical of body 32B controls operation, uses and reaches dynamic driving capacity adjustment, reduces electromagnetism simultaneously and does
Disturb and switch cost.
As shown in figure 14, the first external loading device 90 is the first switching electric crystal 32A through mutually concatenation
And second switching electric crystal 32B and be connected to ground connection, and first switching electric crystal 32A can be NMOS
Or PMOS, the second switching electric crystal 32B are alternatively diode, it figure is display the first switching electric crystal
32A be NMOS to facilitate explanation, and second switching electric crystal 32B be NMOS, wherein first switching
The gate of electric crystal 32A and second switching electric crystal 32B is to be controlled by PWM drive controller 31.
First external power source unit 80 is connected to the first switching electric crystal 32A and second switching electricity through inductance L1
The concatenation point P of crystal 32B, and the magnitude of voltage of concatenation point P is sensed by PWM drive controller 31, use
To control the first switching electric crystal 32A and the second switching electric crystal 32B.PWM drive controller 31 warp
Boost resistor 60 and be connected to the first external power source unit 80, and be connected to first through dropping resistor 70
External loading device 90.Additionally, one end of electric capacity C1 connects the first external loading device 90, and electric capacity
The other end of C1 is ground connection.
The regulation of PWM drive controller 31 processes the embodiment being analogous to above-mentioned Fig. 2, thus similar
As technical characteristic will not be described in great detail.It should be noted that the difference between the present embodiment and Fig. 2 embodiment
Mainly it is that the PWM drive controller 31 of Fig. 2 embodiment controls single switching electric crystal 32
, but the PWM drive controller of the present embodiment 31 can control the first switching electric crystal 32A simultaneously
And second switching electric crystal 32B.Therefore, when the first switching electric crystal 32A is NMOS, PWM
The operation driving controller 31 refers to the waveform of Fig. 3, Fig. 4 and Fig. 5, uses control each first and cuts
Change electric crystal 32A and second switching electric crystal 32B, and when the first switching electric crystal 32A is PMOS,
The operation of PWM drive controller 31 can the waveform of additional reference Figure 10.
Additionally, for avoiding result in the first switching electric crystal 32A and second switching electric crystal 32B because of big electric current
Flow through and damage, so when the waveform of reference Fig. 3, Fig. 4, Fig. 5, Figure 10, it is necessary to prevent first
Switching electric crystal 32A and second switching electric crystal 32B simultaneously turns on.That is, electric crystal 32A is switched when first
During closedown, the second switching electric crystal 32B just can turn on, in like manner, when the second switching electric crystal 32B closes
Time, just can turn on the first switching electric crystal 32A.
Figure 15 is the schematic diagram of tenth embodiment of the invention, is similar to the 9th embodiment of above-mentioned Figure 14,
Its main discrepancy is the first external power source unit 80 and connection position of the first external loading device 90
Putting exchange, therefore, the power control of the tenth embodiment can be by from the first external power source unit 80
Higher pressure Power convert becomes relatively low-tension supply to be supplied to the first external loading device 90, uses and reaches blood pressure lowering
(buck) function, realizes dynamic driving capacity adjustment simultaneously, reduces electromagnetic interference and switch cost.
Same, the PWM drive controller 31 of the 9th embodiment and the tenth embodiment can be by multiple independences
Electronic component combined one-tenth hardware circuit and realize, or by a central processing unit (CPU) or a microcontroller
(MCU) mat performs a software formula or a firmware formula and realizes, and it is also preferred that the left PWM drive controller
31 is central processing unit or the microcontroller realization of the IC operated by numerical digit.
In sum, the feature of the present invention essentially consists in the regulation utilizing pulse width modulation to drive controller
Process, and when the initial turn-on electric current switching electric crystal under DCM is 0, reduce switching electricity as far as possible
Crystal open speed, thus reduce the switching slope of voltage, reach to increase the purpose in EMI limit, fall
Low EMI.Additionally, when the initial turn-on electric current under switching electric crystal is at CCM is not 0, can accelerate
Switching electric crystal open speed, reduce switch cost, and then promote conversion efficiency, guarantee electrically simultaneously
Quality.Especially, the present invention regulation of degree of driving ability is processed be applicable to different forward, flyback,
Full-bridge, half-bridge, boosting, the circuit framework of blood pressure lowering, can expand application, quite has industry and utilizes
Property.
Furthermore, the voltage that disclosed herein dynamically available adjustment utilizes different MOS or different electric crystal to work as
Make the type of drive of switching electric crystal, specifically reach reduction conducting and effect of switch cost, thus promote
Overall power supply turns ten thousand efficiency.
The foregoing is only to explain presently preferred embodiments of the present invention, be not intended to according to this present invention be done
Any pro forma restriction, therefore, all have made under identical spirit for the present invention any
Modify or change, all must be included in the category that the invention is intended to protection.
Claims (21)
1. a power control for dynamic driving capacity adjustment, in order to will have a friendship of an input voltage
Stream input power is converted into an out-put supply of tool one output voltage and provides an output to outside one
Load, this power control includes:
One rectification unit, in order to receive this alternating current input power supplying, and is rectified into one by this alternating current input power supplying
DC source；
One power factor correction unit, in order to receive this DC source, and is carried out at a PFC
Manage and produce a power factor correcting power supply；
One power conversion unit, in order to receive this power factor correcting power supply and to carry out a Power convert process
And produce this out-put supply, for loading；And
One feedback unit, is electrically connected to this power conversion unit, in order to by the output electricity of this out-put supply
Pressure is converted into a feedback signal, and is back to this power conversion unit,
It is characterized in that, this power conversion unit includes that a transformator, a pulse width modulation drive and controls
Device, one switching electric crystal, one output diode and an output capacitance, and this transformator comprise primary side
Coil and second siding ring, and this output diode concatenates to this output capacitance, this switching electric crystal connects
To one end of this first siding ring, this pulse width modulation drives controller to carry out a regulation process and produce
One pulse width modulation drives signal, turns on and off operation in order to control this switching electric crystal, and these are two years old
Secondary lateral coil is to concatenate to this output diode and this output capacitance, and this output capacitance is to be connected in parallel to
This load, and this output capacitance produces this out-put supply to be supplied to this load, this switching electric crystal is one
N-type switching device, comprises a N channel gold oxygen half electric crystal or a NPN two-carrier electric crystal, and this arteries and veins
Rush width modulation drive controller pulse width modulation drive signal be coupled to this NMOS gate or
The base stage of this NPN two-carrier electric crystal, this pulse width modulation drive controller regulation process include with
Lower step:
Within one first rise time, the pulse width modulation that this pulse width modulation drives controller is driven
One driving voltage of dynamic signal is risen to one first voltage by a minimum voltage of 0V, wherein in order to start
Turn on this switching electric crystal and make source of the drawing voltage of this switching electric crystal to decline；
Within one second rise time, by this driving voltage by this first voltage rise above more than this
One second voltage of one voltage and reach a ceiling voltage；
Maintain a Preset Time；
Within one first fall time, this driving voltage is declined by the ceiling voltage exceeding this second voltage
To this first voltage；And
Within one second fall time, this driving voltage is reduced to by this first voltage the minimum electricity of 0V
Pressure,
Wherein this first voltage is about the Miller platform of this switching electric crystal, and this Miller platform refers to that this is cut
Change electric crystal and close the lock source voltage maintaining certain certain value to the handoff procedure of conducting, and when this switching
When the drain current of electric crystal is zero, elongates this first rise time to reduce electromagnetic interference, shorten simultaneously
This second rise time, this first fall time and this second fall time are to reduce switch cost and conducting
Loss.
2. a power control for dynamic driving capacity adjustment, in order to will have a friendship of an input voltage
Stream input power is converted into an out-put supply of tool one output voltage and provides an output to outside one
Load, this power control includes:
One rectification unit, in order to receive this alternating current input power supplying, and is rectified into one by this alternating current input power supplying
DC source；
One power factor correction unit, in order to receive this DC source, and is carried out at a PFC
Manage and produce a power factor correcting power supply；
One power conversion unit, in order to receive this power factor correcting power supply and to carry out a Power convert process
And produce this out-put supply, for loading；And
One feedback unit, is electrically connected to this power conversion unit, in order to by the output electricity of this out-put supply
Pressure is converted into a feedback signal, and is back to this power conversion unit,
It is characterized in that, this power conversion unit includes that a transformator, a pulse width modulation drive and controls
Device, a switching electric crystal, an auxiliary diode, an outputting inductance, an output diode and an output
Electric capacity, and this transformator comprises first siding ring and second siding ring, and an anode of this output diode
Being connected to one end of this secondary side, an anode of this auxiliary diode is connected to an other end of this secondary side,
One negative terminal of this output diode and a negative terminal of this auxiliary diode are connected to one end of this outputting inductance,
One other end of this outputting inductance is connected to one end of this output capacitance, and an other end of this output capacitance
Being connected to this other end of this secondary side, and this load is connected in parallel to this output capacitance, this switching electricity is brilliant
Body is connected to one end of this first siding ring, and this pulse width modulation drives controller to carry out a regulation process
And produce a pulse width modulation and drive signal, in order to control the operation that turns on and off of this switching electric crystal,
And this output capacitance produces this out-put supply to be supplied to this load, this switching electric crystal is a N-type switching
Element, comprises a NMOS or a NPN two-carrier electric crystal, and this pulse width modulation drives and controls
The pulse width modulation of device drives signal to be coupled to gate or this NPN two-carrier electricity crystalline substance of this NMOS
The base stage of body, this pulse width modulation drives the regulation of controller to process and comprises the following steps:
Within one first rise time, the pulse width modulation that this pulse width modulation drives controller is driven
One driving voltage of dynamic signal is risen to one first voltage by 0V, wherein in order to begin to turn on this switching electricity
Crystal and make source of the drawing voltage of this switching electric crystal to decline；
Within one second rise time, by this driving voltage by this first voltage rise above more than this
One second voltage of one voltage；
Maintain a Preset Time；
Within one first fall time, this driving voltage is dropped to this first electricity by exceeding this second voltage
Pressure；And
Within one second fall time, this driving voltage is reduced to 0V by this first voltage,
Wherein this first voltage is about the Miller platform of this switching electric crystal, and this Miller platform refers to that this is cut
Change electric crystal and close the lock source voltage maintaining certain certain value to the handoff procedure of conducting, and when this switching
When the drain current of electric crystal is zero, elongates this first rise time to reduce electromagnetic interference, shorten simultaneously
This second rise time, this first fall time and this second fall time are to reduce switch cost and conducting
Loss.
The power control of dynamic driving capacity adjustment the most according to claim 1 and 2, it is special
Levying and be, this feedback unit includes one first resistance, one second resistance, one the 3rd resistance, a thyristor
And a photo-coupler, this first resistance, this second resistance, the 3rd resistance, and should for sequentially to concatenate
A string contact of the first resistance and this second resistance is coupled to the one of this output diode and this output capacitance
Concatenation point, in order to receive this out-put supply, and a string contact of this second resistance and the 3rd resistance is even
Be connected to a gate terminal (G end) of this thyristor, and a positive terminal of this thyristor (A end) to be coupled to this defeated
Go out electric capacity, and this photo-coupler be connected to the negative pole end (K end) of this thyristor and this first resistance it
Between, so that this photo-coupler produces this feedback signal.
The power control of dynamic driving capacity adjustment the most according to claim 1 and 2, it is special
Levying and be, this first voltage is 3V to 6V, and this second voltage is 7V to 9V.
The power control of dynamic driving capacity adjustment the most according to claim 1 and 2, it is special
Levying and be, this pulse width modulation drives controller to be by multiple individual electronic components combined one-tenth hardware electricity
Road and realize, or performed a software formula or a firmware journey by a central processing unit or a microcontroller mat
Formula and realize.
The power control of dynamic driving capacity adjustment the most according to claim 1 and 2, it is special
Levying and be, the one of this switching electric crystal draws source voltage falling time and, and to draw source voltage rising time defeated at this
Go out and when power is 36W, be less than about 200ns and about 100ns respectively, and this draws source voltage falling time and refers to
This switching electric crystal drawing source voltage and dropped to minimum drawn by the highest source voltage that draws in turn on process
The time of source voltage, and this draws source voltage rising time and refers to that this draws this switching electric crystal in closing process
Source voltage is risen to the highest time drawing source voltage by the minimum source voltage that draws.
The power control of dynamic driving capacity adjustment the most according to claim 1 and 2, it is special
Levy and be, this first rise time, this second rise time, this first fall time and this second decline
Time is that mat strengthens or reduces the driving force of this pulse width modulation driving controller and the most dynamically adjust
Control.
8. a power control for dynamic driving capacity adjustment, in order to will have a friendship of an input voltage
Stream input power is converted into an out-put supply of tool one output voltage and provides an output to outside one
Load, this power control includes:
One rectification unit, in order to receive this alternating current input power supplying, and is rectified into one by this alternating current input power supplying
DC source；
One power factor correction unit, in order to receive this DC source, and is carried out at a PFC
Manage and produce a power factor correcting power supply；
One power conversion unit, in order to receive this power factor correcting power supply and to carry out a Power convert process
And produce this out-put supply, for loading；And
One feedback unit, is electrically connected to this power conversion unit, in order to by the output electricity of this out-put supply
Pressure is converted into a feedback signal, and is back to this power conversion unit,
It is characterized in that, this power conversion unit comprises a full-bridge Power convert framework or a half bridge power turns
Change framework, and this full-bridge Power convert framework each and this half bridge power converting structure comprise a transformator,
One pulse width modulation drives controller, at least one switching electric crystal, an auxiliary diode, an output electricity
Sense, output diode and an output capacitance, and this transformator comprise in first siding ring and tool one
Between the second siding ring of tap, and one end of this second siding ring is connected to an anode of this output diode,
One other end of this second siding ring is connected to an anode of this auxiliary diode, the one of this output diode
Negative terminal is connected to a negative terminal and one end of this outputting inductance of this auxiliary diode, the one of this outputting inductance
The other end is connected to one end of this output capacitance, and an other end of this output capacitance is connected to this secondary side line
The centre tap of circle, and this output capacitance is to be connected in parallel to this load, and this output capacitance to produce this defeated
Going out power supply to be supplied to this load, this pulse width modulation drives controller according to this feedback signal to carry out
One regulation process and produce at least one pulse width modulation drive signal, in order to control respectively this at least all
Change the operation that turns on and off of electric crystal, and this pulse width modulation drives the regulation process of controller to include
Following steps:
Within one first rise time, the pulse width modulation that this pulse width modulation drives controller is driven
One driving voltage of dynamic signal is risen to one first voltage by 0V, wherein in order to begin to turn on this switching electricity
Crystal and make source of the drawing voltage of this switching electric crystal to decline；
Within one second rise time, by this driving voltage by this first voltage rise above more than this
One second voltage of one voltage；
Maintain a Preset Time；
Within one first fall time, this driving voltage is dropped to this first electricity by exceeding this second voltage
Pressure；And
Within one second fall time, this driving voltage is reduced to 0V by this first voltage,
Wherein this first voltage is about the Miller platform of this switching electric crystal, and this Miller platform refers to that this is cut
Change electric crystal and close the lock source voltage maintaining certain certain value to the handoff procedure of conducting, and when this switching
When the drain current of electric crystal is zero, elongates this first rise time to reduce electromagnetic interference, shorten simultaneously
This second rise time, this first fall time and this second fall time are to reduce switch cost and conducting
Loss.
The power control of dynamic driving capacity adjustment the most according to claim 8, its feature exists
In, this full-bridge Power convert framework comprise one first switching electric crystal, one second switching electric crystal, one the
Three switching electric crystals and one the 4th switching electric crystal, and this first switching electric crystal, this second switching electricity
Crystal, the 3rd switching electric crystal and the 4th switching electric crystal be by NPN two-carrier electric crystal,
NMOS or PMOS is constituted.
The power control of dynamic driving capacity adjustment the most according to claim 8, its feature exists
In, this half bridge power converting structure comprises one first switching electric crystal and one second switching electric crystal, and should
First switching electric crystal and this second switching electric crystal be by NPN two-carrier electric crystal, NMOS or
PMOS is constituted.
The power control of 11. dynamic driving capacity adjustment according to claim 8, its feature exists
In, this feedback unit include one first resistance, one second resistance, one the 3rd resistance, a thyristor and
One photo-coupler, this first resistance, this second resistance, the 3rd resistance for sequentially to concatenate, and this first
A string contact of resistance and this second resistance is coupled to a concatenation of this output diode and this output capacitance
Point, in order to receive this out-put supply, and a string contact of this second resistance and the 3rd resistance is coupled to
One gate terminal (G end) of this thyristor, and a positive terminal of this thyristor (A end) is coupled to this output electricity
Hold, and this photo-coupler be connected between a negative pole end (K end) and this first resistance of this thyristor,
So that this photo-coupler produces this feedback signal.
The power control of 12. dynamic driving capacity adjustment according to claim 8, its feature exists
In, this first voltage is 3V to 6V, and this second voltage is 7V to 9V.
The power control of 13. dynamic driving capacity adjustment according to claim 8, its feature exists
In, this pulse width modulation drives controller to be by multiple individual electronic components combined one-tenth hardware circuit
Realize, or performed a software formula or a firmware formula by a central processing unit or a microcontroller mat and
Realize.
The power control of 14. dynamic driving capacity adjustment according to claim 8, its feature exists
In, the one of this switching electric crystal draws source voltage falling time and and draws source voltage rising time in this output work
It is less than about 200ns and about 100ns when rate is 36W respectively, and this draws source voltage falling time and refers to that this is cut
Change electric crystal one in turn on process draw source voltage by one the highest draw source voltage drop to one minimum draw source electricity
The time of pressure, and this draws source voltage rising time and refers to that this draws source electricity to this switching electric crystal in closing process
Pressure is risen to the highest time drawing source voltage by the minimum source voltage that draws.
The power control of 15. dynamic driving capacity adjustment according to claim 8, its feature exists
In, this first rise time, this second rise time, this first fall time and this second fall time
It is that mat strengthens or reduces the driving force of this pulse width modulation driving controller and the most dynamically adjust control
System.
The power control of 16. 1 kinds of dynamic driving capacity adjustment, in order to will be from one first external power source
One input power of unit tool low voltage is converted into an out-put supply of tool one high voltage and is supplied to one
First external loading device, uses and reaches boost function, and this power control includes that a pulse width is adjusted
Become and drive controller, one first switching electric crystal, one second switching electric crystal, a boost resistor, a fall
Piezoresistance, an inductance and an electric capacity, wherein this first external loading device be through mutually concatenation this first
Switch electric crystal and this second switching electric crystal and be connected to ground connection, and this first switching electric crystal is
NMOS or PMOS, and this second switching electric crystal is NMOS, this first switching electric crystal and this
The gate of two switching electric crystals is to be driven controller to be controlled by this pulse width modulation, this first external electrical
Source unit is to be connected to this first switching electric crystal and a concatenation of this second switching electric crystal through this inductance
Point, this pulse width modulation drives controller mat to sense this concatenation point P to control this first switching electric crystal
And this second switching electric crystal, this pulse width modulation drives controller to be connected to this through this boost resistor
First external power source unit, and it is connected to this first external loading device through this dropping resistor, this electric capacity
One end be connected to this first external power source unit, and an other end of this electric capacity is ground connection, and its feature exists
In, this pulse width modulation drives the regulation of controller to process and comprises the following steps:
Within one first rise time, by order to drive logical this first or this second switching electric crystal pulse
Width modulation drives a driving voltage of signal to be risen to one first voltage by 0V, uses and begins to turn on this
First or this second switching electric crystal, and make this first or this second switching electric crystal source of drawing voltage under
Fall；
Within one second rise time, by this driving voltage by this first voltage rise above more than this
One second voltage of one voltage；
Maintain a Preset Time；
Within one first fall time, this driving voltage is dropped to this first electricity by exceeding this second voltage
Pressure；And
Within one second fall time, this driving voltage is reduced to 0V by this first voltage,
Wherein this first voltage is about the Miller platform of this switching electric crystal, and this Miller platform refer to this
One or this second switching electric crystal close to conducting handoff procedure in maintain certain certain value lock source electricity
Pressure, and when this first or this second switching electric crystal drain current be zero time, elongate this first rise time
Between to reduce electromagnetic interference, shorten this second rise time, this first fall time and this second time simultaneously
The fall time is to reduce switch cost and conduction losses.
The power control of 17. 1 kinds of dynamic driving capacity adjustment, in order to will be from one first external power source
One input power of unit tool high voltage is converted into an out-put supply of tool one low voltage and is supplied to one
First external loading device, uses and reaches buck functionality, and this power control includes that a pulse width is adjusted
Become and drive controller, one first switching electric crystal, one second switching electric crystal, a boost resistor, a fall
Piezoresistance, an inductance and an electric capacity, wherein this first external electrical apparatus be through mutually concatenation this first
Switch electric crystal and this second switching electric crystal and be connected to ground connection, and this first switching electric crystal is
NMOS or PMOS, and this second switching electric crystal is NMOS, this first switching electric crystal and this
The gate of two switching electric crystals is to be driven controller to be controlled by this pulse width modulation, and this first outside is negative
Carrier unit is to be connected to this first switching electric crystal and a concatenation of this second switching electric crystal through this inductance
Point, this pulse width modulation drives controller mat to sense this concatenation point P to control this first switching electric crystal
And this second switching electric crystal, this pulse width modulation drives controller to be connected to this through this boost resistor
First external loading unit, and it is connected to this first external electrical apparatus through this dropping resistor, this electric capacity
One end be connected to this first external loading unit, and an other end of this electric capacity is ground connection, and its feature exists
In, this pulse width modulation drives the regulation of controller to process and comprises the following steps:
Within one first rise time, by order to drive logical this first or this second switching electric crystal pulse
Width modulation drives a driving voltage of signal to be risen to one first voltage by 0V, uses and begins to turn on this
First or this second switching electric crystal, and make this first or this second switching electric crystal source of drawing voltage under
Fall；
Within one second rise time, by this driving voltage by this first voltage rise above more than this
One second voltage of one voltage；
Maintain a Preset Time；
Within one first fall time, this driving voltage is dropped to this first electricity by exceeding this second voltage
Pressure；And
Within one second fall time, this driving voltage is reduced to 0V by this first voltage,
Wherein this first voltage is about the Miller platform of this switching electric crystal, and this Miller platform refer to this
One or this second switching electric crystal close to conducting handoff procedure in maintain certain certain value lock source electricity
Pressure, and when this first or this second switching electric crystal drain current be zero time, elongate this first rise time
Between to reduce electromagnetic interference, shorten this second rise time, this first fall time and this second time simultaneously
The fall time is to reduce switch cost and conduction losses.
18. according to the power control of the dynamic driving capacity adjustment described in claim 16 or 17, its
Being characterised by, this first voltage is 3V to 6V, and this second voltage is 7V to 9V.
19. according to the power control of the dynamic driving capacity adjustment described in claim 16 or 17, its
Being characterised by, this pulse width modulation drives controller to be by multiple individual electronic components combined one-tenth hardware
Circuit and realize, or performed a software formula or a firmware by a central processing unit or a microcontroller mat
Formula and realize.
20. according to the power control of the dynamic driving capacity adjustment described in claim 16 or 17, its
Being characterised by, this is first or drawing source voltage falling time and and draw source voltage of this second switching electric crystal years old
Rise time is less than about 200ns and about 100ns respectively when this output is 36W, and this draws source electricity
The drops time refer to this first or this second switching electric crystal in turn on process, one draw source voltage by one
The highest source voltage that draws drops to the minimum time drawing source voltage, and this draws source voltage rising time and refers to this
First or this second switching electric crystal in closing process, this draws source voltage and is risen to by the minimum source voltage that draws
The one the highest time drawing source voltage.
21. according to the power control of the dynamic driving capacity adjustment described in claim 16 or 17, its
It is characterised by, this first rise time, this second rise time, this first fall time and this second time
The fall time is that mat strengthens or reduces the driving force of this pulse width modulation driving controller and the most dynamically adjust
Whole control.
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| CN201510033887.9A CN105871232A (en) | 2015-01-23 | 2015-01-23 | Power source control device capable of dynamically adjusting driving ability |
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| CN201510033887.9A CN105871232A (en) | 2015-01-23 | 2015-01-23 | Power source control device capable of dynamically adjusting driving ability |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI631875B (en) * | 2016-09-20 | 2018-08-01 | 日商松下知識產權經營股份有限公司 | Protection circuit of dimming device and dimming device |
| CN112953262A (en) * | 2019-12-10 | 2021-06-11 | 产晶积体电路股份有限公司 | Dynamic regulating power controller |
| CN113419220A (en) * | 2021-06-17 | 2021-09-21 | 上海航天电子通讯设备研究所 | High-voltage type phased array radar exciter with multiple protection functions |
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| TWI631875B (en) * | 2016-09-20 | 2018-08-01 | 日商松下知識產權經營股份有限公司 | Protection circuit of dimming device and dimming device |
| US10708989B2 (en) | 2016-09-20 | 2020-07-07 | Panasonic Intellectual Property Management Co., Ltd. | Protection circuit for dimmer, and dimmer |
| CN112953262A (en) * | 2019-12-10 | 2021-06-11 | 产晶积体电路股份有限公司 | Dynamic regulating power controller |
| CN112953262B (en) * | 2019-12-10 | 2022-06-28 | 产晶积体电路股份有限公司 | Dynamic regulating power supply controller |
| CN113419220A (en) * | 2021-06-17 | 2021-09-21 | 上海航天电子通讯设备研究所 | High-voltage type phased array radar exciter with multiple protection functions |
| CN113419220B (en) * | 2021-06-17 | 2022-04-01 | 上海航天电子通讯设备研究所 | High-voltage type phased array radar exciter with multiple protection functions |
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