CN108880270A - Electric power converter control circuit - Google Patents
Electric power converter control circuit Download PDFInfo
- Publication number
- CN108880270A CN108880270A CN201811091968.4A CN201811091968A CN108880270A CN 108880270 A CN108880270 A CN 108880270A CN 201811091968 A CN201811091968 A CN 201811091968A CN 108880270 A CN108880270 A CN 108880270A
- Authority
- CN
- China
- Prior art keywords
- secondary side
- transformer
- connect
- electric power
- power converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 56
- 238000001514 detection method Methods 0.000 claims abstract description 32
- 238000004146 energy storage Methods 0.000 claims abstract description 28
- 238000005070 sampling Methods 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 description 15
- 101100489717 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GND2 gene Proteins 0.000 description 8
- 230000006870 function Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000002955 isolation Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000717 retained effect Effects 0.000 description 4
- 230000003071 parasitic effect Effects 0.000 description 3
- 101100489713 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GND1 gene Proteins 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 101710170230 Antimicrobial peptide 1 Proteins 0.000 description 1
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33515—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with digital control
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
Abstract
Electric power converter provided by the embodiments of the present application and its control circuit, including：Transformer, transformer driver, secondary controller, secondary side diode, output capacitance and load；One end of transformer primary coil is connect with supply voltage, and the other end of transformer primary coil and one end of transformer driver connect, and the other end of transformer driver is connect with main side earth potential；Secondary side diode, load are sequentially connected in series between the both ends of the secondary coil of transformer, output capacitance is in parallel with load；Secondary controller includes secondary side signal detection circuit and energy capacitance set, the input terminal of secondary side signal detection circuit is connect with any place of secondary circuit, the output end of secondary side signal detection circuit and the control terminal of storage capacitor connect, there are three energy storage ends for energy capacitance set, first energy storage end is connected to the tie point of the secondary coil of secondary side diode and transformer, second energy storage end is connect with output voltage, and third energy storage end is connect with secondary side earth potential.
Description
Technical field
This application involves electrical component fields, in particular to a kind of electric power converter control circuit.
Background technique
In Medical Devices, communication network, electric car and robot, there are a large amount of signal isolators and isolated electricity
Force transducer control circuit, to protect the safety of user and equipment.Isolated electric power converter is because its reliability is high, anti-interference energy
Power is widely used in by force every field.
In the communication bus such as RS-232, RS-485, CAN usually using isolated electric power converter come protect system from
High voltage transient impact, and reduce distorted signals.In Medical Devices, to ensure personal safety, it is also necessary to use isolated electric power
Converter.But due to having electrical isolation between the output end and input terminal of isolated electric power converter, control method is usual
It is more complicated than non-isolated electric power converter.
Apply for content
In view of this, the embodiment of the present application provides a kind of electric power converter control circuit.
The embodiment of the present application provides a kind of electric power converter control circuit, and the electric power converter control circuit includes：
Transformer, transformer driver, secondary controller, secondary side diode, output capacitance and load；The secondary sideline of the transformer
The secondary side diode, the load are sequentially connected in series between the both ends of circle, the output capacitance is parallel to defeated with the load
Out between voltage and secondary side earth potential；The secondary controller includes secondary side signal detection circuit and energy capacitance set, described
The input terminal of secondary side signal detection circuit is connect with any place of secondary circuit, the output end of the secondary side signal detection circuit and institute
The control terminal connection of storage capacitor is stated, for the energy capacitance set there are three energy storage end, the first energy storage end is connected to the secondary side two
The tie point of the secondary coil of pole pipe and the transformer, the second energy storage end are connect with the output voltage, third energy storage end and
The pair side earth potential connection.Wherein, the secondary circuit is the circuit being connected to the secondary coil of the transformer.
Electric power converter control circuit provided by the embodiments of the present application has the beneficial effect that：
The embodiment of the present application provides a kind of electric power converter control circuit, and the electric power converter control circuit includes：
Transformer, transformer driver, secondary controller, secondary side diode, output capacitance and load；The secondary sideline of the transformer
The secondary side diode, the load are sequentially connected in series between the both ends of circle, the output capacitance is parallel to defeated with the load
Out between voltage and secondary side earth potential；The secondary controller includes secondary side signal detection circuit and energy capacitance set, described
The input terminal of secondary side signal detection circuit is connect with any place of secondary circuit, the output end of the secondary side signal detection circuit and institute
The control terminal connection of storage capacitor is stated, there are three energy storage ends for the energy capacitance set, and the first energy storage end is connected to secondary side diode
With the tie point of the secondary coil of transformer, the second energy storage end is connect with output voltage, and third energy storage end and secondary side earth potential connect
It connects, wherein the secondary circuit is the circuit being connected to the secondary coil of the transformer.
The embodiment of the present application provides secondary side signal detection circuit to obtain the electrical signal of secondary circuit, to judge electric power
The working condition of converter, and carried out accordingly according to capacitance size of the working condition of electric power converter to energy capacitance set
Adjustment, to control the energy for being transferred to output end.The embodiment of the present application can become without using additional optocoupler, signal
Depressor, isolation capacitance in the case where also not reducing electric power converter efficiency, realize the accurate tune to electric power converter output voltage
Section.
Above objects, features, and advantages to enable the embodiment of the present application to be realized are clearer and more comprehensible, be cited below particularly compared with
Good embodiment, and cooperate appended attached drawing, it is described in detail below.
Detailed description of the invention
Illustrate the technical solutions in the embodiments of the present application or in the prior art in order to clearer, 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
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is electric power converter control circuit in the prior art；
Fig. 2 is another electric power converter control circuit in the prior art；
Fig. 3 shows electric power converter control circuit provided by the embodiments of the present application；
Fig. 4 shows the electric power converter control circuit of the application first embodiment offer；
Fig. 5 shows a kind of specific embodiment of the electric power converter control circuit of the application first embodiment offer；
Fig. 6 shows the electric power converter control circuit of the application second embodiment offer；
Fig. 7 shows a kind of specific embodiment of the electric power converter control circuit of the application second embodiment offer；
Fig. 8 shows the waveform diagram of the working principle of electric power converter control circuit provided by the embodiments of the present application；
Fig. 9 shows another circuit diagram of electric power converter control circuit provided by the embodiments of the present application.
Specific embodiment
There are many types, such as positive activation type converter, flyback converter, push-pull type to convert for isolated electric power converter
Device is illustrated problems of the prior art below by taking flyback converter as an example.
Referring to Figure 1, Fig. 1 shows electric power converter control circuit in the prior art.Transformer X1 by input terminal with
Output end has carried out electrical isolation, and for accurate control output voltage, secondary side feedback transmit circuit obtains output voltage, and uses light
The elements such as coupling, transformer, isolation capacitance pass the information of output voltage back main side feedback reception circuit, main side feedback reception electricity
The connection of the side Lu Yuzhu controller, main side controller realize the purpose for adjusting output voltage by control first switch tube Q1.So
And such control method increases additional component, such as optocoupler, transformer, isolation capacitance, these isolation components are logical
Constant volume is larger and expensive, increases the volume and cost of electric power converter.
Fig. 2 shows another electric power converter control circuits in the prior art.The prior art increases in output end
Voltage order one converter accurately controls output voltage to realize.The electric pressure converter can be linear regulator LR1, and work is former
Reason is that amplifier AMP1 controls the grid of Qs1 according to the difference of output voltage VO 2S and the first reference voltage VREF1 after sampling
Pole, to control the conducting resistance of power tube Qs1.When VO2 is higher than predeterminated voltage, the conducting resistance of Qs1 is turned up, VO2 is worked as
When lower than predeterminated voltage, the conducting resistance of Qs1 is turned down, to realize the accurate control to output voltage.Entire electrical power conversion
The efficiency of device is the product of former flyback converter efficiency and linear regulator LR1, and the theoretical efficiency of LR1 is not higher than VO2/
VO1 (VO2 is less than VO1), therefore the efficiency of electric power converter is caused to reduce.
In order to solve the above technical problems, the embodiment of the present application provides following electric power converter control circuit, below will
In conjunction with attached drawing, describe in detail to the electric power converter control circuit in the embodiment of the present application.
Embodiment
Fig. 3 specifically is referred to, Fig. 3 shows electric power converter control circuit provided by the embodiments of the present application, the electric power
Converter control circuit includes：Transformer X1, transformer driver 210, secondary controller 110, secondary side diode Ds1, output
Capacitor Co and load.
In a kind of specific embodiment of electric power converter provided by the embodiments of the present application and its control circuit, the change
The Same Name of Ends of the main sideline circle L11 of depressor is connect with supply voltage, and the different name end of L11 and one end of transformer driver 210 connect
It connects, 210 other end is connect with main side earth potential GND1；The different name end of the secondary coil L22 of the transformer and the secondary side
The anode connection of diode Ds1, the Same Name of Ends of L22 are connect with pair side earth potential GND2, and the cathode and output voltage VO 1 of Ds1 connects
It connects, the output capacitance Co and the load are parallel between VO1 and GND2.
The secondary controller 110 includes secondary side signal detection circuit 111 and energy capacitance set 112, pair side letter
The input terminal of number detection circuit 111 is connect with any place of secondary circuit, the output end of the secondary side signal detection circuit 111 and institute
State the control terminal connection of energy capacitance set 112, the energy capacitance set there are three energy storage end, the first energy storage end be connected to Ds1 with
The tie point of L22, the second energy storage end are connect with VO1, and third energy storage end is connect with GND2, wherein the secondary circuit is and L22
The circuit of connection.
The energy capacitance set 112 includes integrated Metal-Insulator-Metal (MIM) capacitor and Metal-
Oxide-Metal (MOM) capacitor.
The embodiment of the present application provides secondary side signal detection circuit to obtain the electrical signal of secondary circuit, to judge electric power
The working condition of converter, and phase is carried out according to capacitance size of the working condition of electric power converter to the energy capacitance set
The adjustment answered, to control the energy for being transferred to output end.
Refer to Fig. 4, the secondary side signal detection circuit 111 include the first sampling resistor Rs1, the second sampling resistor Rs2,
Comparator COMP1 and digitial controller 1121；Rs1 and Rs2 series connection, the concatenated Rs1 and Rs2 are in parallel with load；COMP1
Electrode input end be connected between Rs1 and Rs2, the negative input of COMP1 is connect with the first reference voltage VREF1, described
The output end VCCTRL of comparator is connect with the input terminal of the digitial controller 1121.
The energy capacitance set includes that one end of first capacitor element Cs1, Cs1 are connected to the tie point of Ds1 and L22, Cs1
The other end connect with GND2, the control terminal of 1121 output end and Cs1 connect.Cs1 may include multiple capacitors and multiple
Control terminal, 1121 may include multiple output ends.
Refer to Fig. 5, the first capacitor element Cs1 includes multiple first capacitor device Cs1k (k=1,2 ... N) and more
A first switch S1k (k=1,2 ... N), the quantity of the first capacitor device Cs1k are identical as the quantity of the first switch S1k；
Each of the multiple first capacitor device Cs1k is in series with corresponding first switch S1k, the multiple concatenated first electricity
Container Cs1k and corresponding first switch S1k are parallel between the anode and ground of the secondary side diode Ds1, and the multiple first
Control terminal in each of switch S1k is connect with the output end of the digitial controller 1121.
Fig. 6 is referred to, the energy capacitance set includes that one end of the second capacity cell Cs2, Cs2 is connected to Ds1's and L22
The other end of tie point, Cs2 is connect with VO1, and 1121 output end and the control terminal of Cs1 connect.Cs2 may include multiple capacitors
Device and multiple control terminals, 1121 may include multiple output ends.
Fig. 7 is referred to, second capacity cell includes multiple second capacitor Cs2k (k=1,2 ... N) and multiple
Two switch S2k (k=1,2 ... N), the quantity of the second capacitor Cs2k are identical as the quantity of the second switch S2k；It is described
Each of multiple second capacitor Cs2k are in series with corresponding second switch S2k, the multiple concatenated second capacitor
Cs2k and second switch S2k are parallel between the tie point and VO1 of Ds1 and L22, every in the multiple second switch S2k
A control terminal is connect with the output end of the digitial controller 1121.
The transformer driver 210 includes main side switching tube Q1, it is main in capacitor C1 and it is main while controller 2101.One end of Q1
It is connect with L11 different name end, the other end of Q1 is connect with main side earth potential, and Q1 specifically can be NMOS；C1 is in parallel with Q1, and C1 is at least
Capacitor parasitics including Q1, C1 may include the capacitor parasitics and auxiliary capacitor of Q1, the capacitor parasitics and institute
State auxiliary capacitor parallel connection；The input terminal of main side controller 2101 is connect with L11 different name end, 2101 output end and Q1 control terminal
Connection.
The working principle of electric power converter control circuit provided by the embodiments of the present application is：
Alternately, when Q1 conducting, the electric current of main sideline circle L11 rises, energy for main side switching tube Q1 conducting and disconnection
It is stored on L11.At this moment secondary side diode Ds1 is disconnected, without energy transmission to output end.
When Q1 is disconnected, the energy transmission of L11 is stored in pair side.Energy in the leakage inductance of X1 is not transmitted to pair
Side, in order to allow the energy in leakage inductance not to be dissipated to the greatest extent, the leakage inductance of X1 and main side capacitor C1 resonance.The energy for being transferred to secondary side is divided into
Two parts, part energy are retained and are stored by energy capacitance set 112, and another part is transferred to output end by Ds1.Secondary side letter
Number detection circuit 111 can the secondary side electrical signal according to detected by it adjust the energy that energy capacitance set 112 retains.When being examined
When the secondary side electrical signal measured is lower than predeterminated voltage, energy capacitance set 112 retains less energy, and more energy can be passed
It is defeated to arrive output end；When detected secondary side electrical signal is higher than predeterminated voltage, storage capacitor retains more energy, less
Energy can be transferred to output end, be transferred to the energy of output end by controlling, so that it may adjust output voltage.
Fig. 5 is referred to, the first sampling resistor Rs1, the second sampling resistor Rs2 constitute the sample circuit of output voltage, to defeated
Voltage VO1 is sampled to obtain VO1S out.VO1S is compared with the first reference voltage VREF1 by comparator COMP1.
COMP1 output regulation voltage VCCTRL simultaneously controls digitial controller 1121, and digitial controller 1121 is coupled to first capacitor element
Cs1 and the size for controlling Cs1.
When first capacitor element Cs1 is smaller, shown in work wave such as Fig. 8 (a).One duty cycle point of electric power converter
For 3 stages.T1 to t2 is the first stage, and in this stage, the grid voltage VG1 of first switch Q1 is height, Q1 conducting.Q1 grid
Pole tension VD1 is 0, and secondary side diode Ds1 cathode voltage VS1 is clamped at negative voltage, and Ds1 is disconnected, and no electric current flows through Ds1.
T2 to t3 be second stage, t2 moment Q1 disconnect, VD1 voltage rise, energy from main when passing to secondary, since Cs1 is smaller,
VS1 is quickly increased, until Ds1 cathode voltage VS1 reaches the sum of output voltage and diode turn-on voltage.T3 to T is third rank
Section, in this stage, energy is transferred to output end by Ds1.Ds1 electric current be reduced to after 0 the leakage inductance of secondary coil L22 with
Cs1 resonance.It is connected again in T moment Q1.When the first storage capacitor Cs1 is larger, shown in work wave such as Fig. 8 (b).Second
Stage, Q1 are disconnected, and VD1 voltage increases, and energy is from main when passing to secondary, and since Cs1 is larger, takeing a long time can just make
VS1 is increased to the sum of output voltage and Ds1 conducting voltage.In the process more output end should be transferred to by Ds1
Energy retained by Cs1, therefore compared to the lesser situation of Cs1, less energy has been transferred to output end, and output voltage is more
It is low.
When output voltage is higher than predeterminated voltage, i.e. when VO1S is higher than VREF1, the regulation voltage of comparator COMP1 output
VCCTRL is height, and Cs1 is caused to increase.Cs1 retention is more transferred to the energy of output end, and output voltage is caused to decline.Similarly,
When output voltage is lower than predeterminated voltage, i.e. when VO1S is lower than VREF1, the regulation voltage VCCTRL of comparator COMP1 output is
It is low, cause Cs1 to reduce.Cs1 retains the less energy for being transferred to output end, and output voltage is caused to rise.Therefore output voltage
It is fluctuated up and down around predeterminated voltage, using the filter action of output capacitance Co, can reduce the ripple of output voltage, obtain essence
True and stable output voltage.
Fig. 5 is referred to, first capacitor element Cs1 includes one end and the Ds1 of multiple first capacitor device Cs1k (k=1,2 ... N)
One end of anode connection, the other end and first switch S1k (k=1,2 ... N) connects, the other end of S1k (k=1,2 ... N) with
GND2 connection.Specifically, S1k (k=1,2 ... N) can be MOS, and S1k (k=1,2 ... N) can be NMOS.Digitial controller
1121 control being turned on or off for S1k (k=1,2 ... N) according to the comparison result of comparator COMP1, thus adjustable reality
The size of the storage capacitor value of circuit is accessed on border.When output voltage is higher than predeterminated voltage, i.e. VO1S is higher than VREF1, VCCTRL
Control digitial controller 1121 makes more switch conductions, increases storage capacitor value, retains more energy to reduce output electricity
Pressure.When output voltage is lower than predeterminated voltage, i.e. VO1S is lower than VREF1, VCCTRL control digitial controller 1121 makes more
Switch disconnects, and reduces storage capacitor value, retains less energy to increase output voltage.
Fig. 6 is referred to, second one end capacity cell Cs2 is connect with Ds1 anode, and the other end is connect with Ds1 cathode.Comparator
COMP1 compares the size of VO1S and VREF1 and exports regulation voltage VCCTRL to control digitial controller 1121, digitial controller
1121 are coupled to Cs2 and control the size of Cs2., the principle phase of the principle and the embodiment shown in Fig. 4 of the embodiment shown in Fig. 6
Seemingly, Q1 just when, Cs2 both end voltage is negative, and for Ds1 is connected, needs first to charge to Cs2 the conducting voltage of Ds1, therefore
The energy that a part is transferred to output end is retained by Cs2.The energy of the adjustable Cs2 retention of size by adjusting Cs2, when defeated
Increase Cs2 when voltage is higher than predeterminated voltage out, reduces Cs2 when output voltage is less than predeterminated voltage, thus can control defeated
The size of voltage out.
Fig. 7 is referred to, the second capacity cell includes multiple second capacitor Cs2k (k=1,2 ... N), the second capacitor
The one end Cs2k (k=1,2 ... N) is connect with Ds1 anode, and one end of the other end and second switch S2k (k=1,2 ... N) connect,
The other end of S2k (k=1,2 ... N) is connect with Ds1 cathode.Specifically, S2k (k=1,2 ... N) can be MOS, S2k (k=
1,2 ... N) it specifically can be PMOS.Digitial controller 1121 according to the comparison result of comparator COMP1 control S2k (k=1,
2 ... N) be turned on or off, the thus size of the storage capacitor value of adjustable practical access circuit.When output voltage height
In predeterminated voltage, i.e. when VO1S is higher than VREF1, VCCTRL control digitial controller 1121 makes more switch conductions, increases storage
Energy capacitance, retains more energy to reduce output voltage.When output voltage is lower than predeterminated voltage, i.e. VO1S is lower than VREF1
When, VCCTRL control digitial controller 1121, which makes more to switch, to be disconnected, and is reduced storage capacitor value, is retained less energy to increase
Big output voltage.
Fig. 9 is referred to, Fig. 9 shows the another kind electricity of electric power converter provided by the embodiments of the present application and its control circuit
Lu Tu, the electric power converter and its control circuit include：Transformer X1, transformer driver 210, secondary controller 110, pair
Side diode Ds1, output capacitance Co and load.The Same Name of Ends of the main sideline circle L11 of the transformer is connect with supply voltage,
The different name end of L11 is connect with one end of transformer driver 210, and 210 other end is connect with main side earth potential GND1；The change
The Same Name of Ends of the secondary coil L22 of depressor is connect with the cathode of the secondary side diode Ds1, the different name end of L22 and output voltage
The anode of VO1 connection, the secondary side diode Ds1 is connect with pair side earth potential GND2, the output capacitance Co and the load
It is parallel between output voltage VO 1 and GND2.
The secondary controller 110 includes secondary side signal detection circuit 111 and energy capacitance set 112, pair side letter
The input terminal of number detection circuit 111 is connect with any place of secondary circuit, the output end of the secondary side signal detection circuit 111 and institute
The control terminal connection of storage capacitor 112 is stated, there are three energy storage ends for the energy capacitance set, and the first energy storage end is connected to Ds1 and L22
Tie point, the second energy storage end connect with VO1, and third energy storage end is connect with GND2, wherein the secondary circuit is and the change
The circuit of the secondary coil L22 connection of depressor X1.
The embodiment of the present application provides a kind of electric power converter control circuit, and the electric power converter control circuit includes：
Transformer, transformer driver, secondary controller, secondary side diode, output capacitance and load；The secondary sideline of the transformer
The secondary side diode, the load are sequentially connected in series between the both ends of circle, the output capacitance is in parallel with the load；It is described
Secondary controller includes secondary side signal detection circuit and energy capacitance set, the input terminal and pair of the secondary side signal detection circuit
Any place's connection of side circuit, the output end of the secondary side signal detection circuit is connect with the control terminal of the storage capacitor, described
For energy capacitance set there are three energy storage end, the first energy storage end is connected to the secondary coil of the secondary side diode and the transformer
Tie point, the second energy storage end are connect with the output voltage, and third energy storage end is connect with the secondary side earth potential.Wherein, described
Secondary circuit is the circuit being connected to the secondary coil of the transformer.The embodiment of the present application provides secondary side signal detection circuit and comes
The electrical signal for obtaining secondary circuit, to judge the working condition of electric power converter, and according to the work shape of electric power converter
State is adjusted correspondingly the capacitance size of storage capacitor, to control the energy for being transferred to output end.
It should be noted that all the embodiments in this specification are described in a progressive manner, each embodiment weight
Point explanation is the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other.
For device class embodiment, since it is basically similar to the method embodiment, so being described relatively simple, related place ginseng
See the part explanation of embodiment of the method.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through it
Its mode is realized.The apparatus embodiments described above are merely exemplary, for example, the flow chart and block diagram in attached drawing are aobvious
The device of multiple embodiments according to the application, architectural framework in the cards, the function of method and computer program product are shown
It can and operate.In this regard, each box in flowchart or block diagram can represent one of a module, section or code
Point, a part of the module, section or code includes one or more for implementing the specified logical function executable
Instruction.It should also be noted that function marked in the box can also be attached to be different from some implementations as replacement
The sequence marked in figure occurs.For example, two continuous boxes can actually be basically executed in parallel, they sometimes may be used
To execute in the opposite order, this depends on the function involved.It is also noted that each of block diagram and or flow chart
The combination of box in box and block diagram and or flow chart can be based on the defined function of execution or the dedicated of movement
The system of hardware is realized, or can be realized using a combination of dedicated hardware and computer instructions.
In addition, each functional module in each embodiment of the application can integrate one independent portion of formation together
Point, it is also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module
It is stored in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) execute each embodiment the method for the application all or part of the steps.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.It needs
Illustrate, herein, relational terms such as first and second and the like be used merely to by an entity or operation with
Another entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this realities
The relationship or sequence on border.Moreover, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.It should be noted that：Similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and explained.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain
Lid is within the scope of protection of this application.Therefore, the protection scope of the application shall be subject to the protection scope of the claim.
Claims (10)
1. a kind of electric power converter control circuit, which is characterized in that the electric power converter control circuit includes：Transformer, change
Depressor driver, secondary controller, secondary side diode, output capacitance and load；
One end of the main sideline circle of the transformer is connect with supply voltage, the other end of the main sideline circle of the transformer and change
One end of depressor driver connects, and the other end of the transformer driver is connect with main side earth potential；The pair of the transformer
It is sequentially connected in series the secondary side diode, the load between the both ends of sideline circle, the output capacitance is in parallel with the load
Between output voltage and secondary side earth potential；
The secondary controller includes secondary side signal detection circuit and energy capacitance set, the secondary side signal detection circuit it is defeated
Enter end to connect with any place of secondary circuit, the secondary circuit is the circuit being connected to the secondary coil of the transformer；It is described
The output end of secondary side signal detection circuit is connect with the control terminal of the energy capacitance set, and there are three energy storage for the energy capacitance set
End, the first energy storage end are connected to the tie point of the secondary coil of the secondary side diode and the transformer, the second energy storage end with
The output voltage connection, third energy storage end are connect with the secondary side earth potential.
2. electric power converter control circuit according to claim 1, which is characterized in that the energy capacitance set includes first
Capacity cell；One end of the first capacitor element is connected to the company of the secondary coil of the secondary side diode and the transformer
Contact, the other end of the first capacitor element are connect with the secondary side earth potential；The control terminal of the first capacitor element with
The output end of the secondary side signal detection circuit connects.
3. electric power converter control circuit according to claim 2, which is characterized in that the first capacitor element includes more
The quantity of a first capacitor device and multiple first switches, the first capacitor device is identical as the quantity of the first switch；
Each of the multiple first capacitor device is in series with corresponding first switch, the multiple concatenated first capacitor device
With corresponding first switch be parallel to the secondary coil of the secondary side diode and the transformer tie point and the pair
Between the earth potential of side, output end of the control terminal in each of the multiple first switch with the secondary side signal detection circuit
Connection.
4. electric power converter control circuit according to claim 3, which is characterized in that first switch is NMOS.
5. electric power converter control circuit according to claim 1, which is characterized in that the energy capacitance set includes second
Capacity cell；One end of second capacity cell is connected to the company of the secondary coil of the secondary side diode and the transformer
The other end of contact, second capacity cell is connect with the output voltage；The control terminal of second capacity cell and institute
State the output end connection of secondary side signal detection circuit.
6. electric power converter control circuit according to claim 5, which is characterized in that second capacity cell includes more
The quantity of a second capacitor and multiple second switches, second capacitor is identical as the quantity of the second switch；
Each of the multiple second capacitor is in series with corresponding second switch, the multiple concatenated second capacitor
With corresponding second switch be parallel to the tie point of the secondary coil of the secondary side diode and the transformer with it is described defeated
Out between voltage, control terminal in each of the multiple second switch connects with the output end of the secondary side signal detection circuit
It connects.
7. electric power converter control circuit according to claim 6, which is characterized in that second switch is PMOS.
8. electric power converter control circuit according to claim 1, which is characterized in that the secondary side signal detection circuit packet
The first sampling resistor, the second sampling resistor, comparator and digitial controller are included,
First sampling resistor and the series connection of the second sampling resistor, concatenated first sampling resistor and the second sampling resistor with
Load is in parallel；The positive input terminal of the comparator is connected between first sampling resistor and the second sampling resistor, the ratio
Negative input end compared with device is connect with the first reference voltage, and the input terminal of the output end of the comparator and the digitial controller connects
It connects；The output end of the digitial controller is the output end of the secondary side signal detection circuit, and the digitial controller includes more
A output end.
9. electric power converter control circuit according to claim 1, which is characterized in that the energy capacitance set includes integrated
Metal-Insulator-Metal (MIM) capacitor and Metal-Oxide-Metal (MOM) capacitor.
10. electric power converter control circuit according to claim 1, which is characterized in that the transformer driver includes
It is main in controller, it is main while switching tube and main side capacitor；
The main output end in controller with it is described main while switching tube control terminal connect, one end of the main side switching tube with
One end connection of the main sideline of the input terminal of the main side controller and transformer circle, the main side switching tube it is another
End is connect with main side earth potential；It is described it is main while capacitor and it is described main while paralleled power switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091968.4A CN108880270A (en) | 2018-09-19 | 2018-09-19 | Electric power converter control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091968.4A CN108880270A (en) | 2018-09-19 | 2018-09-19 | Electric power converter control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108880270A true CN108880270A (en) | 2018-11-23 |
Family
ID=64324354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811091968.4A Pending CN108880270A (en) | 2018-09-19 | 2018-09-19 | Electric power converter control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108880270A (en) |
Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5386359A (en) * | 1992-06-03 | 1995-01-31 | Nec Corporation | Multi-output DC-DC converter using a resonance circuit |
| WO2001084698A1 (en) * | 2000-05-03 | 2001-11-08 | Raytheon Company | Fixed frequency regulation circuit employing a voltage variable dielectric capacitor |
| US20010054881A1 (en) * | 2000-06-27 | 2001-12-27 | Origin Electric Company, Limited | Capacitor charging method and charging apparatus |
| CN101297465A (en) * | 2005-10-25 | 2008-10-29 | 皇家飞利浦电子股份有限公司 | Power converter |
| CN101471600A (en) * | 2007-11-29 | 2009-07-01 | 意法半导体股份有限公司 | Isolated voltage converter with feedback on the primary winding, and corresponding method for controlling the output voltage |
| CN101686008A (en) * | 2008-09-26 | 2010-03-31 | 光宝科技股份有限公司 | DC circuit having adjustable output voltage |
| CN101771353A (en) * | 2010-02-24 | 2010-07-07 | 英飞特电子（杭州）有限公司 | Auxiliary source circuit for switch power supply |
| CN201656780U (en) * | 2010-02-24 | 2010-11-24 | 英飞特电子（杭州）有限公司 | Auxiliary source circuit applicable to switch power supply |
| CN102201742A (en) * | 2010-03-26 | 2011-09-28 | 德昌电机(深圳)有限公司 | Power supply circuit, motor device and fan |
| CN102201666A (en) * | 2010-03-26 | 2011-09-28 | 德昌电机(深圳)有限公司 | Control circuit and motor device using control circuit |
| CN102364848A (en) * | 2011-02-01 | 2012-02-29 | 杭州士兰微电子股份有限公司 | Primary side-controlled constant current switch power supply controller and primary side-controlled constant current switch power supply control method |
| US20120147631A1 (en) * | 2010-12-14 | 2012-06-14 | Rohm Co., Ltd. | Dc/dc converter, and power supply and electronic device using the same |
| CN102664530A (en) * | 2012-04-27 | 2012-09-12 | 南京航空航天大学 | Soft-switching isolation type switch capacitor regulator |
| US20120250370A1 (en) * | 2011-03-30 | 2012-10-04 | Daihen Corporation | High frequency power supply device |
| CN104485758A (en) * | 2008-08-29 | 2015-04-01 | 迪睿合电子材料有限公司 | Contactless receiver, resonant circuit, and variable capacitance element |
| CN105207483A (en) * | 2014-05-30 | 2015-12-30 | 纬创资通股份有限公司 | Llc resonant power converter |
| CN206250994U (en) * | 2016-12-16 | 2017-06-13 | 深圳市群芯科创电子有限公司 | A kind of AC DC power supply circuits |
| CN107370384A (en) * | 2017-07-26 | 2017-11-21 | 广州金升阳科技有限公司 | The Switching Power Supply of secondary side feedback control circuit and the application circuit |
| CN207098946U (en) * | 2017-07-25 | 2018-03-13 | 杭州士兰微电子股份有限公司 | Mode of resonance switch converters |
| CN207098932U (en) * | 2017-07-10 | 2018-03-13 | 西安亚润微光电科技有限公司 | A kind of switching power source control circuit, switching power circuit |
| US20180083530A1 (en) * | 2016-09-16 | 2018-03-22 | Kabushiki Kaisha Toshiba | Power supply circuit and power supply device |
| CN108173434A (en) * | 2018-01-15 | 2018-06-15 | 昂宝电子（上海）有限公司 | Switching power circuit |
| CN208608900U (en) * | 2018-09-19 | 2019-03-15 | 重庆线易电子科技有限责任公司 | Electric power converter control circuit |
-
2018
- 2018-09-19 CN CN201811091968.4A patent/CN108880270A/en active Pending
Patent Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5386359A (en) * | 1992-06-03 | 1995-01-31 | Nec Corporation | Multi-output DC-DC converter using a resonance circuit |
| WO2001084698A1 (en) * | 2000-05-03 | 2001-11-08 | Raytheon Company | Fixed frequency regulation circuit employing a voltage variable dielectric capacitor |
| US20010054881A1 (en) * | 2000-06-27 | 2001-12-27 | Origin Electric Company, Limited | Capacitor charging method and charging apparatus |
| CN101297465A (en) * | 2005-10-25 | 2008-10-29 | 皇家飞利浦电子股份有限公司 | Power converter |
| CN101471600A (en) * | 2007-11-29 | 2009-07-01 | 意法半导体股份有限公司 | Isolated voltage converter with feedback on the primary winding, and corresponding method for controlling the output voltage |
| CN104485758A (en) * | 2008-08-29 | 2015-04-01 | 迪睿合电子材料有限公司 | Contactless receiver, resonant circuit, and variable capacitance element |
| CN101686008A (en) * | 2008-09-26 | 2010-03-31 | 光宝科技股份有限公司 | DC circuit having adjustable output voltage |
| CN101771353A (en) * | 2010-02-24 | 2010-07-07 | 英飞特电子（杭州）有限公司 | Auxiliary source circuit for switch power supply |
| CN201656780U (en) * | 2010-02-24 | 2010-11-24 | 英飞特电子（杭州）有限公司 | Auxiliary source circuit applicable to switch power supply |
| CN102201742A (en) * | 2010-03-26 | 2011-09-28 | 德昌电机(深圳)有限公司 | Power supply circuit, motor device and fan |
| CN102201666A (en) * | 2010-03-26 | 2011-09-28 | 德昌电机(深圳)有限公司 | Control circuit and motor device using control circuit |
| US20120147631A1 (en) * | 2010-12-14 | 2012-06-14 | Rohm Co., Ltd. | Dc/dc converter, and power supply and electronic device using the same |
| CN102364848A (en) * | 2011-02-01 | 2012-02-29 | 杭州士兰微电子股份有限公司 | Primary side-controlled constant current switch power supply controller and primary side-controlled constant current switch power supply control method |
| US20120250370A1 (en) * | 2011-03-30 | 2012-10-04 | Daihen Corporation | High frequency power supply device |
| CN102664530A (en) * | 2012-04-27 | 2012-09-12 | 南京航空航天大学 | Soft-switching isolation type switch capacitor regulator |
| CN105207483A (en) * | 2014-05-30 | 2015-12-30 | 纬创资通股份有限公司 | Llc resonant power converter |
| US20180083530A1 (en) * | 2016-09-16 | 2018-03-22 | Kabushiki Kaisha Toshiba | Power supply circuit and power supply device |
| CN206250994U (en) * | 2016-12-16 | 2017-06-13 | 深圳市群芯科创电子有限公司 | A kind of AC DC power supply circuits |
| CN207098932U (en) * | 2017-07-10 | 2018-03-13 | 西安亚润微光电科技有限公司 | A kind of switching power source control circuit, switching power circuit |
| CN207098946U (en) * | 2017-07-25 | 2018-03-13 | 杭州士兰微电子股份有限公司 | Mode of resonance switch converters |
| CN107370384A (en) * | 2017-07-26 | 2017-11-21 | 广州金升阳科技有限公司 | The Switching Power Supply of secondary side feedback control circuit and the application circuit |
| CN108173434A (en) * | 2018-01-15 | 2018-06-15 | 昂宝电子（上海）有限公司 | Switching power circuit |
| CN208608900U (en) * | 2018-09-19 | 2019-03-15 | 重庆线易电子科技有限责任公司 | Electric power converter control circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101860206B (en) | Three-level buck convertor | |
| CN110545040A (en) | three-level Buck circuit and control method thereof | |
| US11349404B2 (en) | Power conversion circuit and power conversion apparatus with same | |
| US8400789B2 (en) | Power supply with input filter-controlled switch clamp circuit | |
| US8300432B2 (en) | Power converter utilizing a RC circuit to conduct during the rising edge of the transformer voltage | |
| CN103166450A (en) | Voltage transmission loss compensation circuit, compensation method, control chip and switching power supply | |
| CN102882359B (en) | Bias voltage generation circuit and switching power supply using same | |
| CN208608900U (en) | Electric power converter control circuit | |
| CN102959845A (en) | Lossless commutation during operation of power converter | |
| CN104503526B (en) | Based on feedback compensating circuit and the method for mixed signal | |
| CN202261028U (en) | Multiphase and misphase parallel two-stage converter | |
| CN103647448A (en) | Integrated step-down-flyback type high power factor constant current circuit and device | |
| CN112910220B (en) | Power supply device and electronic apparatus | |
| CN214154342U (en) | Magnetic isolation wide-range input voltage stabilizing circuit | |
| CN114865917A (en) | Power conversion circuit | |
| CN208608901U (en) | Push-pull type electric power converter control circuit | |
| CN110350799B (en) | Topological structure circuit of DC-DC power supply converter | |
| CN102497102A (en) | Synchronous buck-boost DC-DC conversion circuit with wide output range | |
| CN103248246B (en) | Off-line AC-DC (alternating current-direct current) control circuit and switching circuit comprising control circuit | |
| CN108880270A (en) | Electric power converter control circuit | |
| US20220352738A1 (en) | Charging control method of power supply equipment and power supply equipment | |
| CN102368667A (en) | Offline type AC-DC (Alternating Current-Direct Current) control circuit and converting circuit comprising same | |
| CN106655761A (en) | High-gain boost DC converter | |
| CN108880273B (en) | Push-pull type power converter control circuit | |
| CN111463889A (en) | Double-direct-current power supply switching system with self-locking function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20231222 Address after: Room 803, Building D, Jinxiu Phase III, No. 85 Hudipi, Songxuan Community, Guanhu Street, Longhua District, Shenzhen City, Guangdong Province, 518110 Applicant after: Shenzhen Line Easy Microelectronics Co.,Ltd. Address before: 401120 data of Xiantao street, Yubei District, Chongqing 19 Applicant before: CHONGQING XIANYI ELECTRONIC TECHNOLOGY Co.,Ltd. |
|
| TA01 | Transfer of patent application right |