CN108390565A - Auto-excitation type DC-DC converter of the switch positioned at input side - Google Patents
Auto-excitation type DC-DC converter of the switch positioned at input side Download PDFInfo
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- CN108390565A CN108390565A CN201810281021.3A CN201810281021A CN108390565A CN 108390565 A CN108390565 A CN 108390565A CN 201810281021 A CN201810281021 A CN 201810281021A CN 108390565 A CN108390565 A CN 108390565A
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping 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
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
A kind of switch is located at the auto-excitation type DC DC converters of input side, including an autonomous units and an afterflow unit, the autonomous units include resistance Rs1 to resistance Rs3, resistance Rp1, resistance Rp2, capacitance Cs1, capacitance Cp1, diode Ds1, diode Dp1, inductance L1, positive-negative-positive BJT pipes Qs1 and positive-negative-positive BJT pipes Qp1, the effect of the afterflow unit is to provide current path when positive-negative-positive BJT pipes Qp1 ends for inductance L1, and the resistance Rs1 and resistance Rp1 are start-up resistors.The present invention constitutes auto-excitation type DC DC converter of the switch positioned at input side using self excitation module, has the characteristics that be easy to starting of oscillation, various informative, can meet diversified power conversion demand.
Description
Technical field
The present invention relates to switches positioned at the DC-DC converter of input side, is suitble to low power workplace, applicable field
Such as：Collection of energy, LED drivings, accessory power supply etc..
Background technology
Common switch includes positioned at the DC-DC converter of input side：One Buck-Boost converter body, Zeta converters,
Flyback converters etc..Compared with separated exciting DC-DC converter, auto-excitation type DC-DC converter has the excellent of the ratio of performance to price
Gesture.As shown in Figure 1, a kind of existing auto-excitation type One Buck-Boost converter body is by resistance R1 to R3, positive-negative-positive BJT pipes Q1 and Q2, electricity
Feel L, diode D and capacitance Co compositions.The converter circuit is simple in structure, but entire converter can smoothly starting of oscillation and R2 and
The value of R3 is directly related.When R2 and R3 is designed not at that time, entire converter will be caused to can not be successfully starting of oscillation in turn can not be normal
The consequence of work.
Invention content
In order to overcome the problems, such as that the starting of oscillation of existing auto-excitation type One Buck-Boost converter body, the present invention provide a kind of switch positioned at defeated
Enter the auto-excitation type DC-DC converter of side, not only starting of oscillation is easy for it, and various informative --- Buck-Boost transformation can be formed
Device, Zeta converters, Flyback converters etc..
The technical solution adopted by the present invention to solve the technical problems is：
A kind of switch is located at the auto-excitation type DC-DC converter of input side, including an autonomous units and an afterflow unit,
The autonomous units include resistance Rs1 to resistance Rs3, resistance Rp1, resistance Rp2, capacitance Cs1, capacitance Cp1, diode Ds1, two
Pole pipe Dp1, inductance L1, positive-negative-positive BJT pipes Qs1 and positive-negative-positive BJT pipes Qp1, the afterflow unit have port c_1, port c_2,
Port c_3 and port c_4, the effect of the afterflow unit are to provide electric current when positive-negative-positive BJT pipes Qp1 ends for inductance L1 to lead to
Road；
The emitter of the positive-negative-positive BJT pipes Qs1 simultaneously with the anode of DC power supply Vi, the cathode of diode Ds1, two poles
The cathode of pipe Dp1 is connected with the emitter of positive-negative-positive BJT pipes Qp1, the base stage of positive-negative-positive BJT pipes Qs1 while the sun with diode Ds1
Pole, resistance Rs1 one end be connected with one end of resistance Rs2, the collector of positive-negative-positive BJT pipes Qs1 one end with resistance Rs3 simultaneously
Be connected with one end of capacitance Cs1, the base stage of positive-negative-positive BJT pipes Qp1 simultaneously with the anode of diode Dp1, one end of resistance Rp1 and
One end of resistance Rp2 is connected, and the other end of resistance Rp2 is connected with the other end of capacitance Cs1, the collector of positive-negative-positive BJT pipes Qp1
Simultaneously be connected with one end of the port c_1 of the afterflow unit, one end of inductance L1 and capacitance Cp1, the other end of capacitance Cp1 and
The other end of resistance Rs2 is connected, and the port c_3 of the afterflow unit is connected with one end of load Z, loads the other end and the institute of Z
The port c_4 for stating afterflow unit is connected, the port c_2 of the afterflow unit simultaneously with the other end of inductance L1, resistance Rs3 it is another
One end is connected with the negative terminal of DC power supply Vi；
The other end of resistance Rs1 is connected with the collector of positive-negative-positive BJT pipes Qs1, the other end and the positive-negative-positive BJT of resistance Rp1
The collector of pipe Qp1 is connected；Either：The other end of the resistance Rs1 and the other end of resistance Rp1 are connected to DC power supply
The negative terminal of Vi；Again either：The other end of the resistance Rs1 and the other end of resistance Rp1 are connected to one end of load Z.
Further, the port c_2 of the afterflow unit is connected with port c_4.
About the first preferred embodiment of the afterflow unit, the afterflow unit includes diode Da1 and capacitance Cao,
The cathode of the diode Da1 is connected with the port c_1 of the afterflow unit, the anode of diode Da1 simultaneously with the capacitance
One end of Cao is connected with the port c_3 of the afterflow unit, the other end of capacitance Cao while the port with the afterflow unit
C_2 is connected with port c_4.When the first preferred embodiment of the above-mentioned afterflow unit of use, the switch is located at oneself of input side
Swashing formula DC-DC converter will be as the One Buck-Boost converter body of an auto-excitation type.
About second of preferred embodiment of the afterflow unit, the afterflow unit includes capacitance Cb1, capacitance Cbo, two poles
Pipe Db1, diode Db2 and inductance Lb1, one end of the capacitance Cb1 are connected with the port c_1 of the afterflow unit, capacitance Cb1
The other end be connected simultaneously with the anode of the cathode of diode Db1 and diode Db2, the cathode of diode Db2 and inductance Lb1's
One end is connected, and the other end of inductance Lb1 is connected with one end of the port c_3 of the afterflow unit and capacitance Cbo, capacitance Cbo's
The other end is connected with the port c_2 and port c_4 of the anode of diode Db1 and the afterflow unit simultaneously.When using above-mentioned
When second of preferred embodiment of afterflow unit, the switch will become one certainly positioned at the auto-excitation type DC-DC converter of input side
Swash the Zetat converters of formula.
About the third preferred embodiment of the afterflow unit, the afterflow unit include inductance Lc1, diode Dc1 and
Capacitance Cco, one end of the inductance Lc1 are connected with the anode of diode Dc1, and the cathode of diode Dc1 is simultaneously with capacitance Cco's
One end is connected with the port c_3 of the afterflow unit, the other end of capacitance Cco simultaneously with the other end of inductance Lc1 and described continuous
The port c_4 for flowing unit is connected, and inductance Lc1 and inductance L1 are in coupled relation, and the other end of inductance Lc1 and one end of inductance L1 are
Same Name of Ends.When using the third preferred embodiment of above-mentioned afterflow unit, the switch becomes positioned at the auto-excitation type DC-DC of input side
Parallel operation will be as the Flyback converters of an auto-excitation type.
The present invention technical concept be：First structure is easy to the autonomous units (part for not including afterflow unit) of starting of oscillation,
It uses autonomous units to constitute again and switchs the auto-excitation type DC-DC converter positioned at input side to solve starting problem, reduce it to portion
Divide the dependency degree of component.
Beneficial effects of the present invention are mainly manifested in：It is easy to the autonomous units of starting of oscillation by structure, switch can be enabled to be located at defeated
The auto-excitation type DC-DC converter for entering side is easy to starting of oscillation, reduces the requirement of the component to participating in self-excitation；The switch that may make up is located at
Various informative (including One Buck-Boost converter body, Zeta converters, the Flyback transformation of the auto-excitation type DC-DC converter of input side
Device etc.), diversified power conversion demand can be met.
Description of the drawings
Fig. 1 is a kind of existing auto-excitation type One Buck-Boost converter body.
Fig. 2 is the circuit diagram of the embodiment of the present invention 1.
Fig. 3 is the circuit diagram of the embodiment of the present invention 2.
Fig. 4 is the circuit diagram of the embodiment of the present invention 3.
Fig. 5 is the afterflow element circuit figure for being suitable for the invention the first afterflow unit preferred embodiment.
Fig. 6 is the afterflow element circuit figure for being suitable for the invention second of afterflow unit preferred embodiment.
Fig. 7 is the afterflow element circuit figure for being suitable for the invention the third afterflow unit preferred embodiment.
Fig. 8 is the simulation waveform when embodiment of the present invention 1 uses second of afterflow unit preferred embodiment.
Fig. 9 is the simulation waveform when embodiment of the present invention 2 uses the third afterflow unit preferred embodiment.
Figure 10 is the simulation waveform when embodiment of the present invention 3 uses the first afterflow unit preferred embodiment.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
Embodiment 1
With reference to Fig. 2, a kind of switch is located at the auto-excitation type DC-DC converter of input side, including an autonomous units and one
Afterflow unit, the autonomous units include resistance Rs1 to resistance Rs3, resistance Rp1, resistance Rp2, capacitance Cs1, capacitance Cp1, two
Pole pipe Ds1, diode Dp1, inductance L1, positive-negative-positive BJT pipes Qs1 and positive-negative-positive BJT pipes Qp1, the afterflow unit have port c_
1, port c_2, port c_3 and port c_4, it is inductance L1 that the effect of the afterflow unit, which is when positive-negative-positive BJT pipes Qp1 ends,
Current path is provided.
The emitter of the positive-negative-positive BJT pipes Qs1 simultaneously with the anode of DC power supply Vi, the cathode of diode Ds1, two poles
The cathode of pipe Dp1 is connected with the emitter of positive-negative-positive BJT pipes Qp1, the base stage of positive-negative-positive BJT pipes Qs1 while the sun with diode Ds1
Pole, resistance Rs1 one end be connected with one end of resistance Rs2, the collector of positive-negative-positive BJT pipes Qs1 simultaneously with one end of resistance Rs3,
The other end of resistance Rs1 is connected with one end of capacitance Cs1, the base stage of positive-negative-positive BJT pipes Qp1 simultaneously with the anode of diode Dp1,
One end of resistance Rp1 is connected with one end of resistance Rp2, and the other end of resistance Rp2 is connected with the other end of capacitance Cs1, positive-negative-positive
The collector of BJT pipes Qp1 simultaneously with the port c_1 of the afterflow unit, one end of inductance L1, resistance Rp1 the other end and electricity
Hold Cp1 one end be connected, the other end of capacitance Cp1 is connected with the other end of resistance Rs2, the port c_3 of the afterflow unit and
The one end for loading Z is connected, and the other end for loading Z is connected with the port c_4 of the afterflow unit, the port c_ of the afterflow unit
2 are connected with the negative terminal of the other end of inductance L1, the other end of resistance Rs3 and DC power supply Vi simultaneously.
Embodiment 1 generates required oscillation using the inconsistency inside autonomous units.Assuming that positive-negative-positive BJT pipe Qp1 rates
It is first connected, inductance L1 magnetizes, and electric current iL1 is gradually increased, and DC power supply Vi is filled by resistance Rp2 and resistance Rs3 to capacitance Cs1
Electricity.In the charging process of Cs1, the base current of Qp1 is gradually reduced, and the collector current of Qp1 gradually increases, and Qp1 is gradually
It exits saturation state and enters cut-off state.After Qp1 ends, afterflow unit provides current channel for L1, and L1 puts magnetic, and iL1 is gradual
Reduce.Meanwhile the Qs1 conductings of positive-negative-positive BJT pipes, Vi are charged by resistance Rs2 to capacitance Cp1, Cs1 passes through Rp2 and diode Dp1
And resistance Rp1 electric discharges.When L1 puts magnetic knot beam, iL1 becomes zero.Because of the effect of Cp1, Qs1 cut-offs, Cp1 passes through Rs2 and diode
Ds1 and resistance Rs1 electric discharges.After Qs1 cut-offs, Qp1 is connected again.In cycles.The effect of Ds1 and Dp1 be protection Qs1 and
Qp1 simultaneously participates in vibrating.Rs1 and Rp1 is start-up resistor.
With reference to Fig. 6, when using second of afterflow unit preferred embodiment, embodiment 1 substantially just becomes a self-excitation
The Zeta converters of formula.The afterflow unit includes capacitance Cb1, capacitance Cbo, diode Db1, diode Db2 and inductance Lb1,
One end of the capacitance Cb1 is connected with the port c_1 of the afterflow unit, and the other end of capacitance Cb1 is simultaneously with diode Db1's
Cathode is connected with the anode of diode Db2, and the cathode of diode Db2 is connected with one end of inductance Lb1, the other end of inductance Lb1
It is connected with one end of the port c_3 of the afterflow unit and capacitance Cbo, the other end of capacitance Cbo while the sun with diode Db1
The port c_2 of pole and the afterflow unit is connected with port c_4.When stable state, using the embodiment 1 of second of afterflow unit
Output voltage Vo meets one：Vo>Vi, Vo=Vi or Vo<Vi.The effect of Db2 is to prevent the electric current of Lb1 reversed, can be accelerated
Start-up course.
Fig. 8 is simulation waveform when embodiment 1 uses second of afterflow unit preferred embodiment.Its one as shown in Figure 8
Kind self-excitation working condition, L1 are in critical conduction mode, and Lb1 is in discontinuous conduction mode, and output voltage Vo is less than Vi.
Embodiment 2
With reference to Fig. 3, the other end of resistance Rs1 is connected with the negative terminal of DC power supply Vi in embodiment 2, and resistance Rp1's is another
End is connected with the negative terminal of DC power supply Vi.Remaining structure of embodiment 2 is same as Example 1, the course of work also with embodiment 1
It is similar.
With reference to Fig. 7, when using the third afterflow unit preferred embodiment, embodiment 2 substantially just becomes a self-excitation
The Flyback converters of formula.The afterflow unit includes inductance Lc1, diode Dc1 and capacitance Cco, and the one of the inductance Lc1
End is connected with the anode of diode Dc1, the cathode of diode Dc1 while the end with one end and the afterflow unit of capacitance Cco
Mouth c_3 is connected, and the other end of capacitance Cco is connected with the port c_4 of the other end of inductance Lc1 and the afterflow unit simultaneously, electricity
It is in coupled relation to feel Lc1 and inductance L1, and the other end of inductance Lc1 and one end of inductance L1 are Same Name of Ends.When stable state, using third
The output voltage Vo of the embodiment 2 of kind afterflow unit meets one：Vo>Vi, Vo=Vi or Vo<Vi.
Fig. 9 is simulation waveform when embodiment 2 uses the third afterflow unit preferred embodiment.Its one as shown in Figure 9
Kind self-excitation working condition, coupling inductance L1 and Lc1 are in critical conduction mode, and output voltage Vo is less than Vi.
Embodiment 3
With reference to Fig. 4, the port c_2 of afterflow unit described in embodiment 3 is connected with port c_4, the other end of resistance Rs1 and
The one end for loading Z is connected, and the other end of resistance Rp1 is connected with one end of load Z.Remaining structure of embodiment 3 and 2 phase of embodiment
Together, the course of work is also similar to Example 2.
With reference to Fig. 5, when using the first afterflow unit preferred embodiment, embodiment 3 substantially just becomes a self-excitation
The One Buck-Boost converter body of formula.The afterflow unit includes diode Da1 and capacitance Cao, the cathode of the diode Da1 with
The port c_1 of the afterflow unit is connected, the anode of diode Da1 one end with the capacitance Cao and the afterflow list simultaneously
The port c_3 of member is connected, and the other end of capacitance Cao is connected with the port c_2 of the afterflow unit and port c_4 simultaneously.Stable state
When, using the polarity and Vi of the output voltage Vo of the embodiment 3 of the first afterflow unit on the contrary, the size of Vo meets one：|Vo
|>Vi, | Vo |=Vi or | Vo |<Vi.
Figure 10 is simulation waveform when embodiment 3 uses the first afterflow unit preferred embodiment.As shown in Figure 10 its
A kind of self-excitation working condition, L1 are in critical conduction mode, the polarity of output voltage Vo with Vi on the contrary, | Vo |<Vi.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
The concrete form for being not construed as being only limitted to embodiment and being stated of range, protection scope of the present invention is also and in this field skill
Art personnel according to present inventive concept it is conceivable that equivalent technologies mean.
Claims (5)
1. a kind of switch is positioned at the auto-excitation type DC-DC converter of input side, it is characterised in that：The switch is located at oneself of input side
It includes an autonomous units and an afterflow unit to swash formula DC-DC converter, and the autonomous units include resistance Rs1 to resistance
Rs3, resistance Rp1, resistance Rp2, capacitance Cs1, capacitance Cp1, diode Ds1, diode Dp1, inductance L1, positive-negative-positive BJT pipes Qs1
With positive-negative-positive BJT pipes Qp1, the afterflow unit has port c_1, port c_2, port c_3 and port c_4, the afterflow unit
Effect be to provide current path when positive-negative-positive BJT pipes Qp1 ends for inductance L1,
The emitter of the positive-negative-positive BJT pipes Qs1 simultaneously with the anode of DC power supply Vi, the cathode of diode Ds1, diode Dp1
Cathode be connected with the emitter of positive-negative-positive BJT pipes Qp1, the base stage of positive-negative-positive BJT pipes Qs1 anode, the electricity with diode Ds1 simultaneously
One end of resistance Rs1 is connected with one end of resistance Rs2, the collector of positive-negative-positive BJT pipes Qs1 while one end with resistance Rs3 and capacitance
One end of Cs1 is connected, the base stage of positive-negative-positive BJT pipes Qp1 simultaneously with the anode of diode Dp1, one end of resistance Rp1 and resistance Rp2
One end be connected, the other end of resistance Rp2 is connected with the other end of capacitance Cs1, the collector of positive-negative-positive BJT pipes Qp1 and meanwhile with institute
One end of the port c_1, inductance L1 that state afterflow unit are connected with one end of capacitance Cp1, the other end and the resistance Rs2 of capacitance Cp1
The other end be connected, the port c_3 of the afterflow unit is connected with one end of load Z, loads the other end of Z and the afterflow list
The port c_4 of member is connected, the port c_2 of the afterflow unit simultaneously with the other end of inductance L1, the other end of resistance Rs3 and straight
The negative terminal of galvanic electricity source Vi is connected；
The other end of resistance Rs1 is connected with the collector of positive-negative-positive BJT pipes Qs1, the other end and the positive-negative-positive BJT pipes Qp1 of resistance Rp1
Collector be connected；Either：The other end of the resistance Rs1 and the other end of resistance Rp1 are connected to DC power supply Vi's
Negative terminal；Again either：The other end of the resistance Rs1 and the other end of resistance Rp1 are connected to one end of load Z.
2. switch as described in claim 1 is positioned at the auto-excitation type DC-DC converter of input side, it is characterised in that：The afterflow
The port c_2 of unit is connected with port c_4.
3. switch as claimed in claim 2 is positioned at the auto-excitation type DC-DC converter of input side, it is characterised in that：The afterflow
Unit includes diode Da1 and capacitance Cao, and the cathode of the diode Da1 is connected with the port c_1 of the afterflow unit, and two
The anode of pole pipe Da1 is connected with the port c_3 of one end of the capacitance Cao and the afterflow unit simultaneously, and capacitance Cao's is another
End is connected with the port c_2 of the afterflow unit and port c_4 simultaneously.
4. switch as claimed in claim 2 is positioned at the auto-excitation type DC-DC converter of input side, it is characterised in that：The afterflow
Unit includes capacitance Cb1, capacitance Cbo, diode Db1, diode Db2 and inductance Lb1, one end of the capacitance Cb1 with it is described
The port c_1 of afterflow unit is connected, the other end of capacitance Cb1 simultaneously with the cathode of diode Db1 and the anode phase of diode Db2
Even, the cathode of diode Db2 is connected with one end of inductance Lb1, the port c_3 of the other end of inductance Lb1 and the afterflow unit
Be connected with one end of capacitance Cbo, the other end of capacitance Cbo simultaneously with the anode of diode Db1 and the end of the afterflow unit
Mouth c_2 is connected with port c_4.
5. switch as described in claim 1 is positioned at the auto-excitation type DC-DC converter of input side, it is characterised in that：The afterflow
Unit includes inductance Lc1, diode Dc1 and capacitance Cco, and one end of the inductance Lc1 is connected with the anode of diode Dc1, and two
The cathode of pole pipe Dc1 is connected with the port c_3 of one end of capacitance Cco and the afterflow unit simultaneously, and the other end of capacitance Cco is same
When be connected with the port c_4 of the other end of inductance Lc1 and the afterflow unit, inductance Lc1 and inductance L1 are in coupled relation, inductance
The other end of Lc1 and one end of inductance L1 are Same Name of Ends.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810281021.3A CN108390565A (en) | 2018-04-02 | 2018-04-02 | Auto-excitation type DC-DC converter of the switch positioned at input side |
| CN201910246465.8A CN109787477B (en) | 2018-04-02 | 2019-03-29 | Self-excited DC-DC converter with switch on input side and staggered parallel connection mode thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810281021.3A CN108390565A (en) | 2018-04-02 | 2018-04-02 | Auto-excitation type DC-DC converter of the switch positioned at input side |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108390565A true CN108390565A (en) | 2018-08-10 |
Family
ID=63072946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810281021.3A Withdrawn CN108390565A (en) | 2018-04-02 | 2018-04-02 | Auto-excitation type DC-DC converter of the switch positioned at input side |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108390565A (en) |
-
2018
- 2018-04-02 CN CN201810281021.3A patent/CN108390565A/en not_active Withdrawn
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Application publication date: 20180810 |