CN207039474U - A kind of rectification circuit for energy harvesting - Google Patents
A kind of rectification circuit for energy harvesting Download PDFInfo
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- CN207039474U CN207039474U CN201720959247.5U CN201720959247U CN207039474U CN 207039474 U CN207039474 U CN 207039474U CN 201720959247 U CN201720959247 U CN 201720959247U CN 207039474 U CN207039474 U CN 207039474U
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Abstract
A kind of rectification circuit for energy harvesting disclosed in the utility model, including the first PMOS, second PMOS, first active diode, second active diode and storage capacitor, output end as rectification circuit after the source electrode of first PMOS is connected with the source electrode of the second PMOS, the grid of second PMOS, first input end after the drain electrode of first PMOS and the negative pole interconnection of the first active diode as rectification circuit, the grid of first PMOS, the second input after the drain electrode of second PMOS and the negative pole interconnection of the second active diode as rectification circuit, one end of storage capacitor and the output end of rectification circuit connect, the positive pole of first active diode, the positive pole of second active diode and the other end of storage capacitor are grounded.The conduction voltage drop of rectifying tube can be greatly reduced in the rectification circuit, reduce the own loss of rectification circuit, expand rectification scope, improve rectification efficiency.
Description
Technical field
It the utility model is related to integrated circuit fields, specifically a kind of rectification circuit for energy harvesting.
Background technology
With small-sized, lightweight electronic equipment the popularization such as portable, wearable, and Internet of Things, wireless sensor network
（Wireless Sensor Networks, WSN）The development and application of technology, power issue gradually protrude.On the one hand, at present
The power supply of electronic equipment is still based on battery, it is contemplated that continuation of the journey problem, battery volume are difficult to reduce, and limit electronic equipment
Small-sized, lightness development；On the other hand, it is not easy to charge and changes the environment of battery some, battery directly determines electronics
In the life-span of equipment, once battery exhausts, equipment is paralysed at once.Therefore, the energy conversion obtained in environment is electric energy as tradition
The replacement or supplement of power supply, have caused the extensive concern of academia and industrial quarters.
The electric energy that environmental energy is converted into is mostly AC signal, such as vibrational energy, electromagnetic energy, and Fig. 1 is common full-bridge rectification
The schematic diagram of circuit, its energy harvesting generally comprise following process, first by energy collecting device, by the energy in environment
Be converted to electric energy；Then electric energy is extracted and rectification, be temporarily stored into the energy storage components such as bulky capacitor or battery；Finally lead to
Cross DC-DC change-over circuits and improve power quality, suitable voltage or electric current are provided for load.Common full bridge rectifier is with four
Diode has higher conduction voltage drop as rectifying tube, diode so that the threshold value of rectification circuit is higher, and rectification circuit is led
Current flow angle is small, directly affects the scope from energy collecting device extraction electric energy, and the conduction voltage drop size of rectifying tube, determines rectification circuit
Oneself power consumption, therefore the rectification efficiency of common full bridge rectifier is low.However, due to that can be obtained in environment in most cases
Energy there was only that several microwatts are even less, common full bridge rectifier, which is difficult to extract enough energy from energy collecting device, to be maintained
The work of late-class circuit, or even in faint energy harvesting, can not work at all.The conduction voltage drop of rectifying tube is reduced, both can be with
Reduce the oneself power consumption of rectification circuit, moreover it is possible to further increase the angle of flow, expand the scope from energy collecting device extraction electric energy.
Active rectifying circuit uses active diode, due to the clamping action of comparator, can make rectifying tube as rectifying tube
Conduction voltage drop significantly reduce, but need to configure extra biasing circuit and power supply；In addition because amplifier power consumption itself
Problem, the overall power for effectively reducing rectification circuit may be led to not.
Utility model content
Technical problem to be solved in the utility model is, in view of the shortcomings of the prior art, there is provided one kind obtains for energy
The rectification circuit taken, the conduction voltage drop of rectifying tube can be greatly reduced, reduce the own loss of rectification circuit, expand rectification scope,
Improve rectification efficiency.
Technical scheme is used by the utility model solves above-mentioned technical problem：A kind of rectified current for energy harvesting
Road, including the first PMOS, the second PMOS, the first active diode, the second active diode and storage capacitor, described
The substrate and source shorted of one PMOS, the substrate and source shorted of the second described PMOS, the first described PMOS
Output end as rectification circuit after source electrode is connected with the source electrode of the second described PMOS, the grid of the second described PMOS
As rectification circuit after the negative pole interconnection of pole, the drain electrode of the first described PMOS and the first described active diode
First input end, the grid of the first described PMOS, the drain electrode of the second described PMOS and the described second active two pole
The second input after the negative pole interconnection of pipe as rectification circuit, one end of described storage capacitor and described rectified current
The output end connection on road, the positive pole of the first described active diode, the positive pole of the second described active diode and described
The other end of storage capacitor is grounded.
Disclosed in the utility model during a kind of rectification circuit concrete application for energy harvesting, by first input end and
Two inputs are connected with two output ends of energy collecting device respectively, by the output end of rectification circuit and DC-DC change-over circuits
Input is connected, and the output end of DC-DC change-over circuits is connected with the one end loaded, while being total to DC-DC change-over circuits
Ground terminal is connected and is grounded with the other end loaded.In the course of work, AC energy that the rectification circuit exports energy collecting device
Direct current energy is rectified into, is temporarily stored into storage capacitor CLIn, it is supplied to after rear class DC-DC change-over circuits do further conversion process
Load.In the above-mentioned course of work, the first active diode and the second active diode take turns to operate, the active diode of conducting
Using voltage the higher person in first input end and the second input as power supply, the self-powered of the utility model rectification circuit is realized
And self-starting；The power consumption of the active diode of cut-off is zero, reduce further the utility model rectification circuit at work
Oneself power consumption.
The first described active diode includes the first NMOS tube and first comparator, and described first comparator includes the
Two NMOS tubes, the 3rd NMOS tube, the 3rd PMOS and the 4th PMOS, the source electrode of the 3rd described PMOS and the described the 4th
Power end as described first comparator after the source electrode connection of PMOS, the power end of described first comparator with it is described
The connection of the second input, the substrate of the substrate of the 3rd described PMOS and the 4th described PMOS with described rectification
After the output end connection of circuit, the grid of the 3rd described PMOS and the short circuit that drains with the grid of the 4th described PMOS and
The drain electrode connection of the second described NMOS tube, the source electrode of the 3rd described NMOS tube input for the positive of described first comparator
End, the positive input ground connection of described first comparator, the source electrode of the second described NMOS tube is described first comparator
Reverse input end, the reverse input end of described first comparator is connected with described first input end, the described the 4th
PMOS drains, is used as institute after the connection of the grid of the drain and gate of the 3rd described NMOS tube, the second described NMOS tube
The output end for the first comparator stated, the output end of described first comparator are connected with the grid of the first described NMOS tube,
The substrate of the source electrode and substrate of the first described NMOS tube, the substrate of the second described NMOS tube and the 3rd described NMOS tube is equal
Ground connection, the drain electrode of the first described NMOS tube are connected with the source electrode of the second described NMOS tube and are used as described first active two
The negative pole of pole pipe, the source electrode of the first described NMOS tube are connected with the source electrode of the 3rd described NMOS tube and are used as described first
The positive pole of active diode.After use, when the voltage of the second input is higher than the voltage of first input end, the second input is made
It is first comparator power supply for power supply；When the voltage of first input end is less than zero potential, the output voltage of first comparator is high
In the threshold voltage of the first NMOS tube, the conducting of the first NMOS tube, now the first active diode forward conduction, its conduction voltage drop are remote
Less than general-purpose diode.Conversely, when the voltage of the second input is less than the voltage of first input end, the power supply of first comparator
Voltage is negative, and the voltage of the reverse input end of first comparator is just, due to the substrate and the 4th PMOS of the 3rd PMOS
Substrate is connected with the output end of rectification circuit, it can be ensured that the 3rd PMOS and the 4th PMOS will not be because of the bodies two of parasitism
Pole pipe and reverse-conducting, therefore, the output of first comparator is close to zero level, the shut-off of the first NMOS tube, i.e., the first active two pole
Pipe reversely cut-off, now, the overall power of the first active diode is zero.
The second described active diode includes the 4th NMOS tube and the second comparator, and the second described comparator includes the
Five NMOS tubes, the 6th NMOS tube, the 5th PMOS and the 6th PMOS, the source electrode of the 5th described PMOS and the described the 6th
Power end as the second described comparator after the source electrode connection of PMOS, the power end of the second described comparator with it is described
First input end connection, the substrate of the substrate of the 5th described PMOS and the 6th described PMOS with described rectification
After the output end connection of circuit, the grid of the 6th described PMOS and the short circuit that drains with the grid of the 5th described PMOS and
The drain electrode connection of the 6th described NMOS tube, the source electrode of the 5th described NMOS tube input for the positive of the second described comparator
End, the positive input ground connection of the second described comparator, the source electrode of the 6th described NMOS tube is the second described comparator
Reverse input end, the reverse input end of the second described comparator is connected with the second described input, the described the 5th
PMOS drains, is used as institute after the connection of the grid of the drain and gate of the 5th described NMOS tube, the 6th described NMOS tube
The output end for the second comparator stated, the output end of the second described comparator are connected with the grid of the 4th described NMOS tube,
The source electrode of the 4th described NMOS tube and the substrate of substrate, the substrate of the 5th described NMOS tube and the 6th described NMOS tube are equal
Ground connection, the drain electrode of the 4th described NMOS tube are connected with the source electrode of the 6th described NMOS tube and are used as described second active two
The negative pole of pole pipe, the source electrode of the 4th described NMOS tube are connected with the source electrode of the 5th described NMOS tube and are used as described second
The positive pole of active diode.After use, when the voltage of first input end is higher than the voltage of the second input, first input end is made
It is the power supply of the second comparator for power supply；When the voltage of the second input is less than zero potential, the output voltage of the second comparator is high
In the threshold voltage of the 4th NMOS tube, the conducting of the 4th NMOS tube, now the second active diode forward conduction, its conduction voltage drop are remote
Less than general-purpose diode.Conversely, when the voltage of first input end is less than the voltage of the second input, the power supply of the second comparator
Voltage is negative, and the voltage of the reverse input end of the second comparator is just, due to the substrate and the 5th PMOS of the 6th PMOS
Substrate is connected with the output end of rectification circuit, it can be ensured that the 6th PMOS and the 5th PMOS will not be because of the bodies two of parasitism
Pole pipe and reverse-conducting, therefore, the output of the second comparator is close to zero level, the shut-off of the second NMOS tube, i.e., the second active two pole
Pipe reversely cut-off, now, the overall power of the second active diode is zero.
Compared with prior art, the utility model has the advantage of：
1st, a kind of rectification circuit for energy harvesting disclosed in the utility model, it is active using two PMOSs and two
The common commutation diode of diode in place, the conduction voltage drop of rectifying tube can be greatly reduced, reduce the own loss of rectification circuit, open up
Rectification scope is opened up, improves rectification efficiency.
2nd, further, the second comparator in the first comparator and the second active diode in the first active diode
Power supply is provided by the second input and first input end of rectification circuit respectively, self-powered and self-starting can be achieved, when input is handed over
First active diode and the second active diode alternation when flowing signal, half power consumption can be reduced, and when rectification circuit
When input is zero, the first active diode and the second active diode idle；First active diode and the second active two pole
First comparator and the second comparator in pipe can control the first NMOS tube and the 4th NMOS tube respectively without bias current
It is switched on and off, realizes the zero offset of active rectifying circuit, biasing circuit can be omitted, be simplified circuit；Biased electrical simultaneously
The omission on road, the zero quiescent dissipation of active rectifying circuit is also set really to be realized；In addition, the rectification circuit is with full MOS structure
Realize, be easily integrated.
Brief description of the drawings
Fig. 1 is the structural representation of the common full bridge rectifier for energy harvesting；
Fig. 2 is a kind of application signal of the rectification circuit for energy harvesting of the utility model in energy capturing systems
Figure；
Fig. 3 is the circuit that a kind of rectification circuit for energy harvesting of the utility model is applied in energy capturing systems
Figure.
Embodiment
The utility model is described in further detail with reference to embodiments.
A kind of rectification circuit for energy harvesting of embodiment, including the first PMOS MP1, the second PMOS MP2,
One active diode D1, the second active diode D2 and storage capacitor CL, the first PMOS MP1 substrate and source shorted, the
Two PMOS MP2 substrate and source shorted, the first PMOS MP1 source electrode are made after being connected with the second PMOS MP2 source electrode
For the output end OUT of rectification circuit, the second PMOS MP2 grid, the first PMOS MP1 drain electrode and the first active diode
First input end IN1 after D1 negative pole interconnection as rectification circuit, the first PMOS MP1 grid, the second PMOS
The second input IN2 after MP2 drain electrode and the second active diode D2 negative pole interconnection as rectification circuit, energy storage electricity
Hold CLOne end and rectification circuit output end OUT connections, the first active diode D1 positive pole, the second active diode D2
Positive pole and storage capacitor CLThe other end be grounded.
First active diode D1 includes the first NMOS tube MN1 and first comparator COMP1, first comparator COMP1 bags
Include the second NMOS tube MN2, the 3rd NMOS tube MN3, the 3rd PMOS MP3 and the 4th PMOS MP4, the 3rd PMOS MP3 source
Power end as first comparator COMP1 after pole is connected with the 4th PMOS MP4 source electrode, first comparator COMP1 electricity
Source is connected with the second input IN2, to realize first comparator COMP1 self-powered, the 3rd PMOS MP3 substrate and
Four PMOS MP4 substrate is connected with the output end OUT of rectification circuit, after the 3rd PMOS MP3 grid and drain electrode short circuit
Drain electrode with the 4th PMOS MP4 grid and the second NMOS tube MN2 is connected, and the 3rd NMOS tube MN3 source electrode compares for first
Device COMP1 positive input, first comparator COMP1 positive input ground connection, the second NMOS tube MN2 source electrode is first
Comparator COMP1 reverse input end, first comparator COMP1 reverse input end are connected with first input end IN1, and the 4th
PMOS MP4 drain electrode, the 3rd NMOS tube MN3 drain and gate, the second NMOS tube MN2 grid compare after connecting as first
Compared with device COMP1 output end, first comparator COMP1 output end is connected with the first NMOS tube MN1 grid, control first
NMOS tube MN1 turn-on and turn-off, the first NMOS tube MN1 source electrode and substrate, the second NMOS tube MN2 substrate and the 3rd NMOS
Pipe MN3 substrate is grounded, and the first NMOS tube MN1 drain electrode is connected with the second NMOS tube MN2 source electrode and is used as first active
Diode D1 negative pole, the first NMOS tube MN1 source electrode are connected with the 3rd NMOS tube MN3 source electrode and are used as the first active two pole
Pipe D1 positive pole.
Second active diode D2 includes the 4th NMOS tube MN4 and the second comparator COMP2, the second comparator COMP2 bags
Include the 5th NMOS tube MN5, the 6th NMOS tube MN6, the 5th PMOS MP5 and the 6th PMOS MP6, the 5th PMOS MP5 source
Power end as the second comparator COMP2 after pole is connected with the 6th PMOS MP6 source electrode, the second comparator COMP2 electricity
Source is connected with first input end IN1, to realize the second comparator COMP2 self-powered, the 5th PMOS MP5 substrate and
Six PMOS MP6 substrate is connected with the output end OUT of rectification circuit, after the 6th PMOS MP6 grid and drain electrode short circuit
Drain electrode with the 5th PMOS MP5 grid and the 6th NMOS tube MN6 is connected, and the 5th NMOS tube MN5 source electrode compares for second
Device COMP2 positive input, the second comparator COMP2 positive input ground connection, the 6th NMOS tube MN6 source electrode are the
Two comparator COMP2 reverse input end, the second comparator COMP2 reverse input end are connected with the second input IN2, and the 5th
PMOS MP5 drain electrode, the 5th NMOS tube MN5 drain and gate, the 6th NMOS tube MN6 grid compare after connecting as second
Compared with device COMP2 output end, the second comparator COMP2 output end is connected with the 4th NMOS tube MN4 grid, control the 4th
NMOS tube MN4 turn-on and turn-off, the 4th NMOS tube MN4 source electrode and substrate, the 5th NMOS tube MN5 substrate and the 6th NMOS
Pipe MN6 substrate is grounded, and the 4th NMOS tube MN4 drain electrode is connected with the 6th NMOS tube MN6 source electrode and is used as second active
Diode D2 negative pole, the 4th NMOS tube MN4 source electrode are connected with the 5th NMOS tube MN5 source electrode and are used as the second active two pole
Pipe D2 positive pole.
When above-mentioned rectification circuit is applied particularly to energy harvesting, by first input end IN1 and the second input IN2 respectively with
The output terminals A of energy collecting device, output end B connections, by the output end OUT of rectification circuit and the input of DC-DC change-over circuits
Connection, and the output end of DC-DC change-over circuits is connected with one end of load, at the same by the holding altogether of DC-DC change-over circuits and
The other end of load is connected and is grounded.
When the energy conversion in environment is electric energy by energy collecting device, rectification circuit input exchange signal.When first defeated
When entering to hold IN1 voltage to be higher than the second input IN2 voltage, the first PMOS MP1 and the second active diode D2 conductings, the
Two PMOS MP2 and the first active diode D1 end, and the current trend in rectification circuit is：Electric current is by first input end IN1
Flow into, successively pass through the first PMOS MP1, storage capacitor CL, the second active diode D2, from the second input IN2 flow out.Instead
It, is when first input end IN1 voltage is less than the second input IN2 voltage, the first PMOS MP1 and the second PMOS
MP2 ends, the second PMOS MP2 and the first active diode D1 conductings, and the current trend in rectification circuit is：Electric current is by second
Input IN2 is flowed into, and successively passes through the second PMOS MP2, storage capacitor CL, the first active diode D1, from first input end
IN1 flows out.In this way, the AC signal that energy collecting device in energy capturing systems exports is transformed into individual event pulsation by rectification circuit
Direct current signal, its ripple and storage capacitor CLSize it is related, storage capacitor CLBigger, ripple is smaller.
In Fig. 1, as the general-purpose diode of rectifying tube, conduction voltage drop is big and device technology characteristic is poor, selects sometimes
The metal-oxide-semiconductor of diode connection is substituted.The metal-oxide-semiconductor performance of diode connection is better than general-purpose diode, but its conduction voltage drop is
Threshold voltage VTH, no small loss is still, particularly in energy harvesting, will also influence Energy extraction scope.And this reality
With in novel rectifying circuit, by being connected as the first PMOS MP1 and the second PMOS MP2 of chi structure, instead of in Fig. 1
Commutation diode D1 and D2, this structure not only improve the performance of rectifying tube, and conduction voltage drop is changed into the conducting of PMOS
Voltage VDS, much smaller than the conduction voltage drop V of the metal-oxide-semiconductor of diode connectionTH, in addition, the conduction voltage drop of this structure is close to active two
Pole pipe, circuit structure are but more simply too much than common full bridge rectifier.
In the utility model, the first active diode D1 and the second active diode D2 are self-powered, zero offset, zero static state
The active diode of power consumption, commutation diode D3 and D4 in Fig. 1 can be replaced, further reduces conduction voltage drop, improve rectification effect
Rate, coordinate with the first PMOS MP1 and the second PMOS MP2, realize rectification function.It can be seen from figure 3 that rectification of the present utility model
Circuit is powered by input signal, realizes self-powered, meanwhile, rectification circuit of the present utility model, without bias voltage or biasing
Electric current, the zero offset of circuit is realized, not only eliminates biasing circuit, it is thus also avoided that quiescent dissipation caused by biasing circuit, very
Zero quiescent dissipation of the present utility model is just being realized, in addition, what its integrated circuit was realized with full MOS structure, it is easily integrated.
The operation principle of the utility model rectification circuit is further elaborated below.
When the energy conversion in environment is electric energy by energy collecting device, rectification circuit input exchange signal.
When voltage of the first input end IN1 voltage higher than the second input IN2, and pressure difference is more than the output of rectification circuit
Hold OUT voltage VOUT（That is storage capacitor CLOn voltage）When, the first PMOS MP1 grid voltage is less than source electrode and drain electrode,
As gate source voltage VGS, P1Reach threshold voltage VTH,P1When, the first PMOS MP1 conductings, conduction voltage drop is drain-source voltage VDS,P1；With
First input end IN1 exports electricity as power supply, the second input IN2 as the second comparator COMP2 of reverse input end
The flat threshold voltage V higher than the second NMOS tube MN2TH,N2, the second NMOS tube MN2 conductings, now the second active diode D2 is positive
Conducting, conduction voltage drop are the second NMOS tube MN2 source-drain voltage VSD,N2；Meanwhile second PMOS MP2 grid voltage be higher than source
Pole and drain electrode, the second PMOS MP2 cut-offs, its body diode also reversely end；Using the second input IN2 as power supply,
First input end IN1 as reverse input end first comparator COMP1 output levels close to zero level, the first NMOS tube MN1
Shut-off, the cut-off of its body diode reverse, now the first active diode D1 reversely ends, power consumption zero.Now, first input end
IN1, the first PMOS MP1, storage capacitor CL, the second active diode D2, the second input IN2 formed current path, realize
Give storage capacitor CLCharging, forward voltage V is produced in the output end OUT of rectification circuitOUT。
Similarly, when voltage of the first input end IN1 voltage less than the second input IN2, and pressure difference is more than rectification circuit
Output end OUT voltage VOUT（That is storage capacitor CLOn voltage）When, the second PMOS MP2 grid voltage is less than source electrode
And drain electrode, as gate source voltage VGS, P2Reach threshold voltage VTH,P2When, the second PMOS MP2 conductings, conduction voltage drop is drain-source voltage
VDS,P2；Using the second input IN2 as power supply, first comparator COMP1s of the first input end IN1 as reverse input end
Output level is higher than the first NMOS tube MN1 threshold voltage VTH,N1, the first NMOS tube MN1 conductings, now the first active diode
D1 forward conductions, conduction voltage drop are the first NMOS tube MN1 source-drain voltage VSD,N1；Meanwhile first PMOS MP1 grid voltage
Higher than source electrode and drain electrode, the first PMOS MP1 cut-offs, its body diode also reversely ends；Power supply is used as using first input end IN1
Power supply, the second input IN2 as reverse input end the second comparator COMP2 output levels close to zero level, the 2nd NMOS
Pipe MN2 is turned off, and its body diode also reversely ends, and now the second active diode D2 reversely ends, power consumption zero.Now,
Two input IN2, the second PMOS MP2, storage capacitor CL, the first active diode D1, first input end IN1 formed electric current lead to
Road, realize and give storage capacitor CLCharging, forward voltage V is produced in the output end OUT of rectification circuitOUT。
So circulation, the AC energy that energy collecting device exports is rectified into direct current energy, is temporarily stored into storage capacitor CLIn,
Load is supplied to after rear class DC-DC change-over circuits do further conversion process.In the above-mentioned course of work, the first active two pole
Pipe D1 and the second active diode D2 take turns to operate, and the active diode of conducting is with first input end IN1 and the second input IN2
Middle voltage the higher person realizes self-powered and the self-starting of the utility model rectification circuit as power supply；Active two pole of cut-off
The power consumption of pipe is zero, reduce further the oneself power consumption of the utility model rectification circuit at work.
When there is no energy in environment, when energy collecting device output is zero, first input end IN1 and the second input IN2 it
Between voltage be zero, the voltage between first comparator COMP1 and the second comparator COMP2 supply voltage and reverse input end
It is zero, electric current is zero in circuit, therefore both output end voltages are also zero, and the first NMOS tube MN1 and the second NMOS tube MN2 are equal
Shut-off, the first active diode D1 and its body diode and the second active diode D2 and its body diode are turned off, overall
Quiescent dissipation is zero.Now, the first PMOS MP1 and the second PMOS MP2 body diode are turned off；And the first PMOS
MP1 drain-to-gate voltage VGD,P1With the second PMOS MP2 drain-to-gate voltage VGD,P2It is zero, when output end voltage is higher than first
When PMOS MP1 and the second PMOS MP2 threshold voltage, turned between the first PMOS MP1 and the second PMOS MP2 source and drain,
But because the first active diode D1 and the second active diode D2 are turned off, no current path, therefore be not in energy storage
Electric capacity CLThe situation that electric energy flows backwards.Now, without quiescent current in whole circuit.
The above-mentioned rectification circuit for energy harvesting, using the full MOS structure circuit implementation being easily integrated, realize
The circuit performances such as the self-powered of the rectification circuit, zero offset, zero quiescent dissipation, low dynamic power consumption, the conduction voltage drop of rectifying tube is low,
The angle of flow is big, has expanded the scope from energy collecting device extraction electric energy, finally realizes the high efficiency of rectification.
Claims (3)
1. a kind of rectification circuit for energy harvesting, including the first PMOS, the second PMOS, the first active diode,
Two active diodes and storage capacitor, the substrate and source shorted of the first described PMOS, the lining of the second described PMOS
Bottom and source shorted, the source electrode of the first described PMOS are used as rectification circuit after being connected with the source electrode of the second described PMOS
Output end, the grid of the second described PMOS, the drain electrode of the first described PMOS and the first described active diode
Negative pole be connected with each other after first input end as rectification circuit, the grid of the first described PMOS, described second
The second input after the drain electrode of PMOS and the negative pole interconnection of the second described active diode as rectification circuit, institute
The one end for the storage capacitor stated is connected with the output end of described rectification circuit, the positive pole of the first described active diode, institute
The positive pole for the second active diode stated and the other end of described storage capacitor are grounded.
2. a kind of rectification circuit for energy harvesting according to claim 1, it is characterised in that described first is active
Diode includes the first NMOS tube and first comparator, and described first comparator includes the second NMOS tube, the 3rd NMOS tube, the
Three PMOSs and the 4th PMOS, conduct after the source electrode of the 3rd described PMOS is connected with the source electrode of the 4th described PMOS
The power end of described first comparator, the power end of described first comparator is connected with the second described input, described
The substrate of the 3rd PMOS be connected with output end of the substrate of the 4th described PMOS with described rectification circuit, it is described
The 3rd PMOS grid and drain electrode short circuit after with the grid of the 4th described PMOS and the leakage of the second described NMOS tube
Pole connects, and the source electrode of the 3rd described NMOS tube is the positive input of described first comparator, described first comparator
Positive input ground connection, the source electrode of the second described NMOS tube is the reverse input end of described first comparator, described
The reverse input end of first comparator is connected with described first input end, the draining of the 4th described PMOS, described
The drain and gate of three NMOS tubes, the second described NMOS tube grid connection after output as described first comparator
End, the output end of described first comparator are connected with the grid of the first described NMOS tube, the source of the first described NMOS tube
The substrate of pole and substrate, the substrate of the second described NMOS tube and the 3rd described NMOS tube is grounded, the first described NMOS
The drain electrode of pipe is connected with the source electrode of the second described NMOS tube and is used as the negative pole of the first described active diode, and described
The source electrode of one NMOS tube is connected with the source electrode of the 3rd described NMOS tube and is used as the positive pole of the first described active diode.
3. a kind of rectification circuit for energy harvesting according to claim 1, it is characterised in that described second is active
Diode includes the 4th NMOS tube and the second comparator, and the second described comparator includes the 5th NMOS tube, the 6th NMOS tube, the
Five PMOSs and the 6th PMOS, conduct after the source electrode of the 5th described PMOS is connected with the source electrode of the 6th described PMOS
The power end of the second described comparator, the power end of the second described comparator is connected with described first input end, described
The substrate of the 5th PMOS be connected with output end of the substrate of the 6th described PMOS with described rectification circuit, it is described
The 6th PMOS grid and drain electrode short circuit after with the grid of the 5th described PMOS and the leakage of the 6th described NMOS tube
Pole connects, and the source electrode of the 5th described NMOS tube is the positive input of the second described comparator, the second described comparator
Positive input ground connection, the source electrode of the 6th described NMOS tube is the reverse input end of the second described comparator, described
The reverse input end of second comparator is connected with the second described input, the draining of the 5th described PMOS, described
The drain and gate of five NMOS tubes, the 6th described NMOS tube grid connection after output as the second described comparator
End, the output end of the second described comparator are connected with the grid of the 4th described NMOS tube, the source of the 4th described NMOS tube
The substrate of pole and substrate, the substrate of the 5th described NMOS tube and the 6th described NMOS tube is grounded, the 4th described NMOS
The drain electrode of pipe is connected with the source electrode of the 6th described NMOS tube and is used as the negative pole of the second described active diode, and described
The source electrode of four NMOS tubes is connected with the source electrode of the 5th described NMOS tube and is used as the positive pole of the second described active diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720959247.5U CN207039474U (en) | 2017-08-02 | 2017-08-02 | A kind of rectification circuit for energy harvesting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115473426A (en) * | 2022-08-19 | 2022-12-13 | 中山大学 | Circuit for preventing output crosstalk for rectifier bridge multiplexing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115473426A (en) * | 2022-08-19 | 2022-12-13 | 中山大学 | Circuit for preventing output crosstalk for rectifier bridge multiplexing |
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