CN203911750U - Active unidirectional conduction apparatus - Google Patents
Active unidirectional conduction apparatus Download PDFInfo
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- CN203911750U CN203911750U CN201420267924.3U CN201420267924U CN203911750U CN 203911750 U CN203911750 U CN 203911750U CN 201420267924 U CN201420267924 U CN 201420267924U CN 203911750 U CN203911750 U CN 203911750U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
Provided is an active unidirectional conduction apparatus which is used for conducting a first path between a first terminal and a second terminal. The active unidirectional conduction apparatus includes a first switch circuit, a control circuit, an energy storage circuit, a second switch circuit, and a unidirectional conduction circuit, the first switch circuit controls the conduction or cut off of the first path based on a first switch control signal, the control circuit outputs the first switch control signal based on the voltage difference between the first terminal and the second terminal, the energy storage circuit receives charging power and stores work power, the second switch circuit controls the conduction or cut off of a second path between the energy storage circuit and the control circuit to enable the control circuit to receive the work power when the second path is conducted, and the unidirectional conduction circuit is conducted or cut off based on the voltage difference between the first terminal and the second terminal, and charges the energy storage circuit with the charging power. The active unidirectional conduction apparatus solves the problems that a conventional self-powering unidirectional conduction apparatus is high in energy consumption and low during the standby state and is less in standby time.
Description
Technical field
The utility model relates to a kind of device in one-way on state, relates in particular to a kind of active device in one-way on state.
Background technology
There is single-phase and three-phase in the source of common alternating current, it is required that this AC signal normally cannot offer the power supply of complicated control circuit, therefore need AC/DC changeover switch to convert required specific voltage direct current to, and the first order circuit of transducer is exactly rectifier.The structure that rectifier the most often uses is full-wave rectification bridge (full bridge rectifier), and wherein required element is the single-phase breakover element of both-end.Recently awareness of saving energy strengthens, the rectifier that adopts conventional diode to form, there is the too large problem of minimum forward conduction voltage drop, while causing large electric current to pass through, produce power consumption and fever phenomenon, be not inconsistent energy-conservation demand, and bring heat radiation cost that high temperature causes to promote and the doubt of durability, therefore active rectifier gradually becomes main flow.Active rectifier adopts active power component to produce extremely low forward conduction voltage drop, thereby reduces conversion power consumption and heating, significantly promotes AC-DC conversion efficiency.
Please refer to Figure 1A, 1B and 1C, Figure 1A is the circuit diagram of conventional diode device.More than the end points P of diode 1 voltage is higher than the about 0.7V of end points N, produce forward On current; Otherwise when the end points N of diode 1 voltage is higher than the conducting of P no current, yet the forward voltage drop of 0.7V just can produce power consumption when On current is large, thereby heat producing losses's energy, this is its disadvantage.Figure 1B is the circuit diagram of the three-phase full wave rectifier circuit that forms of conventional diode device, and Fig. 1 C is the oscillogram of the three-phase full wave rectifier circuit that forms of conventional diode device.PH1, PH2, PH3 are three-phase alternating-current supplies, and Vbat is the voltage waveform after rectification, and from Fig. 1 C, Vbat voltage and alternating current input exist voltage differences, and this is consumed energy.Therefore,, for reducing power consumption raising efficiency, need change active element into and carry out rectification.Again in order to lower circuit complexity, therefore adopt self-power supply one-way conduction element to realize this both-end one-way conduction element.
Next, please refer to Fig. 2 A, Fig. 2 A is the main element circuit diagram of traditional self-power supply device in one-way on state.By means of adopting power component to replace diode to reduce forward conduction voltage drop, reach high efficiency demand.Tradition self-power supply device in one-way on state 2 comprises power component 20, one-way conduction element 21, energy-storage travelling wave tube 22 and control circuit unit 24.AC input endpoint P and N are respectively in order to replace the positive pole (Anode) and negative pole (Cathode) input of conventional diode rectifier.BD is the parasitic diode (Body Diode) of the internal memory of power component own.When end points N voltage is higher than end points P voltage and be enough to conducting one-way conduction element 21, just flow through one-way conduction element 21 and be stored in energy-storage travelling wave tube 22 of electric charge, this electric charge is in order to provide the power supply of control circuit unit 24.The positive input terminal of control circuit unit 24 is electrically coupled to P end points, and the negative input end of control circuit unit 24 is coupled to N end points.The output of control circuit unit 24 couples grid (Gate) input of power component 20 to control its unlatching or to close.Simply say, when end points N voltage is during higher than end points P, energy-storage travelling wave tube 22 is in charged state, and now the end points Gate of power component 20 is low-voltage, so power component 20 cuts out.And when end points N voltage is during lower than end points P, energy-storage travelling wave tube 22 is in discharge condition, now the end points Gate of power component 20 is high voltage, so power component 20 opens, and making between end points P and end points N is Low ESR, reaches the object of high efficiency conducting.
Please refer to Fig. 2 B, Fig. 2 B is end points P to the stored voltage V (VC) of the input voltage phase signal (V (P)-V (N)) of end points N string wave-amplitude and energy-storage travelling wave tube 22 and the oscillogram of the electric current (IC) beyond the power component 20 of flowing through.The waveform of Fig. 2 B left side represents the contrary phase signal connecing of P-N, now can see and have current drain (general approximately 1～10uA).The waveform of Fig. 2 B right-hand part represents that P-N, along the phase signal connecing, now can see and not have current drain (providing electric current to comparator by electric capacity).
Please refer to Fig. 2 C and Fig. 2 D, Fig. 2 C is for adopting traditional self-power supply device in one-way on state 2 of Fig. 2 A to replace the active rectifier of self-power supply that Figure 1B diode forms, and shown in Fig. 2 D is the main element oscillogram of traditional self-power supply device in one-way on state.By the waveform of Vbat shown in Fig. 2 D, can find out the alternating voltage no-voltage difference almost with input.
Yet, the device of Fig. 2 A is when rectifier holding state, end points N voltage is higher than end points P voltage, and control circuit unit 24 is still in power consumption state, has one-way conduction element 21 and control circuit unit 24 leakage current to end points P of flowing through from end points N while causing system not operate.This back voltage power consumption is by the significant drawback causing in application when load is battery, and battery can be always in power consumption state when standby, and stand-by time can reduce.And one-way conduction element 21 when power component 20 reverse blas by charge storage at energy-storage travelling wave tube 22 and be directly supplied to control circuit unit 24, so control circuit unit 24 is always in power consumption state.For this power consumption is reduced, control circuit unit 24 operating currents must be dwindled, result causes the slack-off shortcoming of power component 20 switching speeds.And in response to control circuit unit 24 power consumption always, energy-storage travelling wave tube 22 certainly will also will strengthen, and also causes the increase of cost.
Utility model content
Technical problem to be solved in the utility model is, for the deficiencies in the prior art, provides a kind of active device in one-way on state, by adopting complementary conducting to control, effectively to reduce the generation of leakage current.
Technical problem to be solved in the utility model is achieved by the following technical solution:
The utility model provides a kind of active device in one-way on state, in order to the first via warp between conducting the first end points and the second end points, active device in one-way on state comprises the first switching circuit, control circuit, accumulator, second switch circuit and one-way conduction circuit.The first switching circuit is coupled between the first end points and the second end points, and described the first switching circuit is controlled by the first switch controlling signal, take and determines that the first path is as conducting or cut-off state; Control circuit is coupled to the first end points, the second end points and the first switching circuit, and described control circuit is given the first switching circuit according to the voltage difference between the first end points and the second end points to export the first switch controlling signal; Accumulator is coupled to the second end points, and described accumulator stores working power according to charge power supply; Second switch circuit is coupled to the first end points, control circuit and accumulator, described second switch circuit is in order to control conducting or the cut-off state in the second path between accumulator and control circuit, so that control circuit receives working power when the second path conducting; One-way conduction circuit is coupled to the first end points, accumulator and second switch circuit, described one-way conduction circuit according to the voltage difference between the first end points and the second end points to determine conducting or cut-off state, and when one-way conduction circuit is during in conducting state, can provide charge power supply to charge to accumulator; When second switch circuit is when one-way conduction circuit is conducting state, can control the second path is cut-off state; When second switch circuit is when one-way conduction circuit is cut-off state, can control the second path is conducting state.
Based on above-mentioned, the active device in one-way on state that the utility model proposes, when one-way conduction circuit is conducting state, can provide charge power supply to charge to accumulator, and it is cut-off state that second switch circuit can be controlled the second path, stop control circuit output power supply, to block the generation of leakage current.When one-way conduction circuit is cut-off state, accumulator can discharge working power, and it is conducting state that second switch circuit can be controlled the second path, so that control circuit receives working power when the second path conducting.Active device in one-way on state provided by the utility model adopts complementary conducting and cut-off to control, to stop the generation of leakage current, solve thus the power consumption of traditional self-power supply device in one-way on state when holding state, the problem that cost increases, stand-by time reduces.
Technology, method and the effect in order further to understand the utility model, taked; refer to following about detailed description of the present utility model and accompanying drawing; believe feature of the present utility model and feature; when being goed deep into thus and concrete understanding; yet these explanations provide reference and are used for illustrating the utility model with accompanying drawing, but not the utility model claim protection range is limited.
Accompanying drawing explanation
Figure 1A is the circuit diagram of conventional diode device;
Figure 1B is the circuit diagram of the three-phase full wave rectifier circuit that forms of conventional diode device;
Fig. 1 C is the oscillogram of the three-phase full wave rectifier circuit that forms of conventional diode device;
Fig. 2 A is the main element circuit diagram of traditional self-power supply device in one-way on state;
Fig. 2 B is the main element oscillogram of traditional self-power supply device in one-way on state;
Fig. 2 C is the circuit diagram of the active rectifier of self-power supply that forms of traditional self-power supply device in one-way on state;
Fig. 2 D is the oscillogram of the active rectifier of self-power supply that forms of traditional self-power supply device in one-way on state;
Fig. 3 is the block schematic diagram of active device in one-way on state of the present utility model;
Fig. 4 is the main element circuit diagram of active device in one-way on state of the present utility model;
Fig. 5 is operating voltage and the current waveform figure of active device in one-way on state of the present utility model.
[description of reference numerals]
1: diode
2: traditional self-power supply device in one-way on state
20: power component
21: one-way conduction element
22: energy-storage travelling wave tube
24: control circuit unit
3: active device in one-way on state
4: active device in one-way on state
30,40: the first switching circuits
31,41: one-way conduction circuit
32,42: accumulator
33,43: second switch circuit
34,44: control circuit
N: the first end points
P: the second end points
Gate: power component grid
IC: electric current
BD: parasitic diode
PH1, PH2, PH3: three-dimensional AC power
Vbat: the voltage after rectification
Battery: battery
VC: energy-storage travelling wave tube voltage
Embodiment
Please also refer to Fig. 3, the block schematic diagram that Fig. 3 is active device in one-way on state of the present utility model.As shown in Figure 3, active device in one-way on state 3 refers to the device in one-way on state that can carry out conducting between the two ends of the first end points N and the second end points P.Specifically, active device in one-way on state comprises one first switching circuit 30, an one-way conduction circuit 31, an accumulator 32, a second switch circuit 33 and a control circuit 34.It is noted that, described switching circuit (switch circuit) can any type of switching circuit, this disclosure is not that the form with switching circuit is used as restriction, and in one embodiment, accumulator 32 can be electric capacity (capacitance) or other can reach the circuit element of energy-storage function.Below illustrate respectively active device in one-way on state 3 in relativeness and the function of each element.
The first switching circuit 30 is coupled between the first end points N, the second end points P and control circuit 34, in order to control conducting or the cut-off in the first path between the first end points N and the second end points P.The control end of the first switching circuit 30 connects control circuit 34, in order to the first switch controlling signal of reception control circuit 34 to control conducting or the cut-off state in the first path between the first end points N and the second end points P.Specifically, the conducting of the first switching circuit 30 or cut-off are to be controlled by the first switch controlling signal, and the conducting in the first path or cut-off are to be controlled by the first switching circuit 30.That is to say, when the first also conducting of the first path of switching circuit 30 conductings, otherwise also end when the first switching circuit 30 ends the first path.
One end of one-way conduction circuit 31 connects the first end points N, and the other end of one-way conduction circuit 31 connects accumulator 32.At this, one-way conduction circuit 31 can provide charge power supply to charge to accumulator 32 when conducting.In practice, one-way conduction circuit 31 is controlled by the voltage difference of the voltage level of the first end points N and the voltage level of the second end points P to determine itself conducting or cut-off state.When the voltage level of the first end points N is greater than the voltage level of the second end points P, one-way conduction circuit 31 is conducting state, and the voltage difference of usining between the first end points N and the second end points P is charged to accumulator 32 as charge power supply.
Accumulator 32 is coupled between one-way conduction circuit 31, second switch circuit 33 and the second end points P.When one-way conduction circuit 31 is conducting state (voltage level of the first end points N is greater than the voltage level of the second end points P), the charge power supply that accumulator 32 receives the first end points N by one-way conduction circuit 31 is charged, and makes accumulator 32 to store working power according to this charge power supply.When one-way conduction circuit 31 is cut-off state (voltage level of the first end points N is less than the voltage level of the second end points P), accumulator 32 can discharge to control circuit 34 via second switch circuit 33, that is to say that accumulator 32 can provide working power to use to control circuit 34.
Second switch circuit 33 is coupled between one-way conduction circuit 31, the first end points N, control circuit 34 and accumulator 32, in order to control conducting or the cut-off state in the second path between accumulator 32 and control circuit 34.The control end of second switch circuit 33 connects the first end points N, and when the voltage level of the first end points N is greater than the voltage level of the second end points P, the second path that second switch circuit 33 is controlled between accumulator 32 and control circuit 34 is cut-off state.Otherwise, when the voltage level of the first end points N is less than the voltage level of the second end points P, the second path that second switch circuit 32 is controlled between accumulators 32 and control circuit 34 is conducting state, so that control circuit 34 receives working power when the second path conducting.In more detail, it is cut-off state that second switch circuit 33 is controlled the second path when one-way conduction circuit 31 conducting, and when one-way conduction circuit 31 cut-off, to control the second path be conducting state.
Control circuit 34 is coupled to the first end points N, the second end points P, the first switching circuit 30 and second switch circuit 33.Control circuit 34 is the first switch controlling signal to the first switching circuit 30 with output conducting or cut-off according to the voltage level of the first end points N and the second end points P.In the present embodiment, when the voltage level of the first end points N is less than the voltage level of the second end points P, the first switch controlling signal to the first switching circuit 30 of control circuit 34 output conductings, so that the first path conducting.When the voltage level of the first end points N is greater than the voltage level of the second end points P, the first switch controlling signal to the first switching circuit 30 of control circuit 34 output cut-offs, so that the first path cut-off.
Accordingly, active device in one-way on state 3 described in the present embodiment is by arranging second switch circuit 33 between control circuit 34 and accumulator 32, and it is conducting that one-way conduction circuit 31 adopts complementary conducting to control and only have one of them in the same time with second switch circuit 33, that is to say when one-way conduction circuit 31 conducting, second switch circuit 33 will end, the leakage current that so can effectively avoid the electric current when one-way conduction circuit 31 conducting to produce because circulating in control circuit 34.
Next, each circuit implementation detail of active device in one-way on state 3 will be further illustrated, please refer to Fig. 4 and Fig. 5, Fig. 4 is the main element circuit diagram of active device in one-way on state of the present utility model, the operating voltage that Fig. 5 is active device in one-way on state of the present utility model and current waveform figure.As shown in Figure 4, active device in one-way on state 4 comprises one first switching circuit 40, an one-way conduction circuit 41, an accumulator 42, a second switch circuit 43 and a control circuit 44.Annexation between each circuit of active device in one-way on state 4 in Fig. 4 is same as circuit described in Fig. 3, and the element that in active device in one-way on state 4, each circuit comprises is exposed in following explanation.
The first switching circuit 40 comprises the first transistor, and the first transistor has parasitic diode BD, and the cathode terminal of parasitic diode BD is coupled to the first end points N, and the anode tap of parasitic diode BD is coupled to the second end points P.One-way conduction circuit 41 comprises diode.Accumulator 42 comprises electric capacity.Second switch circuit 43 comprises transistor seconds.Control circuit 44 comprises comparator.
The gate terminal of the first transistor of the first switching circuit 40 connects the comparator of control circuit 44, in order to receive the first switch controlling signal to control conducting or the cut-off state in the first path.The cathode terminal of the drain electrode end of the first transistor of the first switching circuit 40 and parasitic diode BD is coupled to the first end points N.The source terminal of the first transistor of the first switching circuit 40 and the anode tap of parasitic diode are coupled to the second end points P.It is worth mentioning that, the first switching circuit 40 can be for example metal-oxide half field effect transistor (MOSFET) or igbt (IGBT), and the first switching circuit is not limited with transistorized execution mode.
The anode tap of the diode of one-way conduction circuit 41 couples the first end points N, and the cathode terminal of diode couples one end of the electric capacity of accumulator 42.The diode of one-way conduction circuit 41 according to the voltage level between anode tap and cathode terminal (voltage level of the voltage level of the first end points N and the second end points P) to determine itself conducting or cut-off state.When the anode tap voltage level of diode is greater than cathode terminal voltage level, the diode of one-way conduction circuit 41 is conducting state, therefore the charge power supply being provided by the first end points N can store working power to the electric capacity of accumulator 42.For convenience of description, the one-way conduction circuit 41 of the present embodiment be take diode as example, but the utility model is not limited with diode, and one-way conduction circuit 41 can be for example voltage stabilizing didoe (Zener diode) or other possible elements.
The electric capacity of accumulator 42, one end is coupled between the cathode terminal of diode and the transistor seconds of second switch circuit 43 of one-way conduction circuit 41, and the other end is coupled to the second end points P.When the diode of one-way conduction circuit 41 is conducting state (voltage level of anode tap is greater than the voltage level of cathode terminal), the charge power supply that the diode of the electric capacity of accumulator 42 by one-way conduction circuit 41 receives the first end points N stores working power.When the diode of one-way conduction circuit 41 is cut-off state (voltage level of anode tap is less than the voltage level of cathode terminal), the electric capacity of accumulator 42 provides working power via the conducting of the transistor seconds of second switch circuit 43 to control circuit.For convenience of description, the accumulator 42 of the present embodiment be take electric capacity as example, but not to be limited.
The first end of the transistor seconds of second switch circuit 43 (gate terminal) connects the first end points N, in order to control conducting or the cut-off state in the second path between accumulator 42 and control circuit 44.Second end (source terminal) of the two-transistor of second switch circuit 43 is coupled to one end of electric capacity and the cathode terminal of diode of accumulator 42, in order to receive working power.Second switch circuit 43 the 3rd end (drain electrode end) of transistor seconds be coupled to control circuit 44, the comparator in order to output power supply to control circuit 44.When the voltage level of the first end points N is greater than the voltage level of the second end points P, the second path that the transistor seconds of second switch circuit 43 is controlled between accumulator 42 and control circuit 44 is cut-off state.Otherwise, when the voltage level of the first end points N is less than the voltage level of the second end points P, transistor controls accumulator 42 and second path between control circuit 44 of second switch circuit 43 are conducting state, so that the comparator of control circuit 44 receives working power when the second path conducting.In more detail, it is cut-off state that the transistor seconds of second switch circuit 43 is controlled the second path in the diode of one-way conduction circuit 41 during in conducting, and in the diode of one-way conduction circuit 41, to control the second path during in cut-off be conducting state.In practice, the transistor of second switch circuit 43 can be P channel transistor, but second switch circuit of the present utility model is not limited with transistor.
Control circuit 44 can be comparator, and meeting is the gate terminal with the first transistor of the first switch controlling signal to the first switching circuit 40 of output conducting or cut-off according to the voltage level of the first end points N and the second end points P.In the present embodiment, the negative input end of comparator connects the first end points N, and the positive input terminal of comparator connects the second end points P.That is to say, comparator is in order to compare the voltage level of the first end points N and the voltage level of the second end points P.Therefore after comparator receives the operating voltage that accumulator 42 provides, comparator starts the voltage level of comparison the first end points N and the voltage level of the second end points P, when the voltage level of the first end points N is less than the voltage level of the second end points P, comparator is exported high logical voltage level (being the first switch controlling signal of conducting), makes the first path conducting; And when the voltage level of the first end points N is greater than the voltage level of the second end points P, comparator is exported low logical voltage level (i.e. the first switch controlling signal of cut-off), makes the first path cut-off.
Next, please also refer to Fig. 4 and Fig. 5.As shown in the figure, when the voltage level of the first end points N is greater than the voltage level (V (P)-V (N) <0V) of the second end points P, the diode of one-way conduction circuit 41 is conducting state, and the first end points N output charge power supply to the electric capacity of accumulator 42 charges and stores working power.In addition, the transistor of second switch circuit 43 is cut-off state, and close by this second path and provide working power to the comparator of controlling power supply 44 to stop accumulator 42, and make the first transistor gate terminal of the first switching circuit 40 receive the first switch controlling signal of cut-off, and then make the first path for cut-off.That is to say, the comparator of control circuit 44 does not receive working power in closed condition because of the second path cut-off, therefore can avoid the electric current I C of conducting diode to flow through leakage current that comparator additionally produces.
On the other hand, when the voltage level of the first end points N is less than the voltage level (V (P)-V (N) >0V) of the second end points P, the diode of one-way conduction circuit 41 is cut-off state, the transistor seconds conducting of second switch circuit 43, therefore the second path being connected between control circuit 44 and accumulator 42 is conducting, make the electric capacity of accumulator 42 discharge working power to the comparator of control circuit 44.Therefore after comparator receives working power, in order to compare the voltage level of the first end points N and the voltage level of the second end points P.And in the present embodiment, the voltage that the comparator of control circuit 44 is only less than the second end points P at the voltage level of the first end points N could receive working power smoothly, therefore be less than the voltage of the second end points P due to the voltage level of the first end points N after comparator is received working power, the comparator of control circuit 44 is to export the first switch controlling signal of conducting to the first transistor in the first switching circuit 40.
In sum, the active device in one-way on state that the utility model provides, becoming the same time to only have one of them one-way conduction circuit and second switch circuit design is conducting state, this design can during higher than the reverse blas of the second end points P, make control circuit can not produce leakage current because working at the voltage of the first end points N.That is to say, the utility model produces because not having extra leakage current, therefore can avoid unnecessary power loss, approaches a kind of active device in one-way on state that leakage current produces by this to reach.
The above; it is only better possible embodiments of the present utility model; not in order to limit to claim protection range of the present utility model, therefore the equivalence techniques that all utilization the utility model specifications and accompanying drawing content are done changes, be all contained in claim protection range of the present utility model.
Claims (9)
1. an active device in one-way on state, is characterized in that, the first via warp in order between conducting one first end points and one second end points, comprising:
One first switching circuit, is coupled between this first end points and this second end points, and it is conducting or cut-off that this first switching circuit is controlled this first path according to one first switch controlling signal;
One control circuit, is coupled to this first end points, this second end points and this first switching circuit, and this control circuit is exported this first switch controlling signal according to the voltage difference between this first end points and this second end points;
One accumulator, couples this second end points, and this accumulator stores a working power according to a charge power supply;
One second switch circuit, be coupled to this first end points, this control circuit and this accumulator, this second switch circuit is controlled conducting or the cut-off in one second path between this accumulator and this control circuit, so that this control circuit receives this working power when the conducting of this second path; And
One one-way conduction circuit, be coupled to this first end points, this accumulator and this second switch circuit, this one-way conduction circuit is according to the voltage difference between this first end points and this second end points and conducting or cut-off, and this one-way conduction circuit provides this charge power supply to this accumulator charging when conducting;
Wherein this second switch circuit is controlled this second path cut-off when this one-way conduction circuit conducting, and controls this second path conducting when this one-way conduction circuit cut-off.
2. active device in one-way on state as claimed in claim 1, it is characterized in that, wherein this first switching circuit is the first transistor, and this first transistor has a parasitic diode, the cathode terminal of this parasitic diode is coupled to this first end points, and the anode tap of this parasitic diode is coupled to this second end points.
3. active device in one-way on state as claimed in claim 2, is characterized in that, wherein this first transistor is metal-oxide half field effect transistor or igbt.
4. active device in one-way on state as claimed in claim 1, it is characterized in that, wherein this control circuit has a comparator, the negative input end of this comparator couples this first end points, the positive input terminal of this comparator couples this second end points, and the output of this comparator couples the control end of this first switching circuit.
5. active device in one-way on state as claimed in claim 1, is characterized in that, wherein this accumulator is electric capacity.
6. active device in one-way on state as claimed in claim 1, is characterized in that, wherein this one-way conduction circuit is diode, and the anode tap of this diode is coupled to this first end points, and the cathode terminal of this diode is coupled to this second switch circuit and this accumulator.
7. active device in one-way on state as claimed in claim 6, is characterized in that, wherein this diode is voltage stabilizing didoe.
8. active device in one-way on state as claimed in claim 6, it is characterized in that, wherein this second switch circuit is transistor seconds, one first end of this transistor seconds is coupled to this first end points, one second end of this transistor seconds is coupled to the cathode terminal of this diode, and one the 3rd end of this transistor seconds is coupled to the power input of this control circuit.
9. active device in one-way on state as claimed in claim 8, it is characterized in that, wherein this transistor seconds is P channel transistor, and this first end of this transistor seconds is gate terminal, this of this transistor seconds the second end is source terminal, and the 3rd end of this transistor seconds is drain electrode end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420267924.3U CN203911750U (en) | 2014-05-23 | 2014-05-23 | Active unidirectional conduction apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420267924.3U CN203911750U (en) | 2014-05-23 | 2014-05-23 | Active unidirectional conduction apparatus |
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| Publication Number | Publication Date |
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| CN203911750U true CN203911750U (en) | 2014-10-29 |
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| CN201420267924.3U Active CN203911750U (en) | 2014-05-23 | 2014-05-23 | Active unidirectional conduction apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI589107B (en) * | 2016-08-19 | 2017-06-21 | 廣達電腦股份有限公司 | One-direction conduct device |
| CN112311023A (en) * | 2019-07-25 | 2021-02-02 | 宏碁股份有限公司 | Power supply control circuit and power supply control method |
-
2014
- 2014-05-23 CN CN201420267924.3U patent/CN203911750U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI589107B (en) * | 2016-08-19 | 2017-06-21 | 廣達電腦股份有限公司 | One-direction conduct device |
| CN112311023A (en) * | 2019-07-25 | 2021-02-02 | 宏碁股份有限公司 | Power supply control circuit and power supply control method |
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