CN208539785U - A kind of negative voltage regulator circuit - Google Patents
A kind of negative voltage regulator circuit Download PDFInfo
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- CN208539785U CN208539785U CN201821199352.4U CN201821199352U CN208539785U CN 208539785 U CN208539785 U CN 208539785U CN 201821199352 U CN201821199352 U CN 201821199352U CN 208539785 U CN208539785 U CN 208539785U
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Abstract
The utility model discloses the negative voltage regulator circuits in one of voltage source switch technology field, the circuit includes charging circuit and discharge circuit, charging circuit includes first capacitor and zener diode group, zener diode group includes at least two series connection zener diodes, one end of first capacitor is electrically connected with the cathode of first zener diode in zener diode group, the anode of the last one zener diode is electrically connected with the input terminal of discharge circuit in zener diode group, the output end of discharge circuit is for being electrically connected the electronic equipment for needing negative voltage, the other end of first capacitor is for being electrically connected external voltage source, zener diode is for controlling external voltage source to first capacitor and discharge circuit charge and discharge, and the quantity by changing zener diode, it is embodied as electronic equipment and different negative voltages is provided, and circuit is simple, structure Clearly, cost is relatively low, is easily achieved.
Description
Technical field
The utility model relates to voltage source switch technology field more particularly to a kind of negative voltage regulator circuits.
Background technique
Negative pressure circuit, which is commonly used in, provides negative pressure for electronic equipment.External voltage is usually positive voltage, and negative pressure circuit connects
By external positive pressure source, external positive supply is converted into the circuit of negative supply, then be output to electronic equipment.
Negative pressure generates and the basic principle of output circuit is as shown in Figure 1, wherein capacitor Cfly is pump capacitor, capacitor Cload
For load capacitance, Sl, S2, S3, S4 are four switches, respectively by the clock control of independent four tunnel, the letter of switch Sl and old times clock
It is number identical, it is denoted asThe clock signal of switch S3 and S2 isComplementary clock signal, be denoted asCircuit shown in Fig. 1 generates negative
The process of pressure includes: firstly, switch Sl and S4 are closed, and pump capacitor Cfly is charged by positive voltage source, pumps capacitor Cfly voltage direction
To be upper just lower negative, then, after switch Sl and S4 are disconnected, switch S2 and S3 closure, pump capacitor Cfly transfer charge to load electricity
The lower end for holding Cload, since the upper end load capacitance Cload is grounded, the lower end load capacitance Cload is negative potential, to produce
The role that play charge porter of raw negative pressure Nvg, pump capacitor Cfly in cycles, in this way, load capacitance Cload
Negative pressure is provided.
However, producing and exporting for negative pressure circuit negative pressure cannot neatly be adjusted in the prior art, can only exponentially export,
And circuit is complicated, at high cost.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of negative voltage regulator circuits, for solving in the prior art
Negative pressure circuit negative pressure produces and exports the problem of cannot neatly adjusting.
In order to solve the above-mentioned technical problem, the utility model provides a kind of negative voltage regulator circuit, which includes charging electricity
Road and discharge circuit, the charging circuit include first capacitor and zener diode group, and the zener diode group includes extremely
Few two series connection zener diodes, in which:
One end of the first capacitor and the cathode of first zener diode in the zener diode group are electrically connected
It connects, the input terminal of the anode and the discharge circuit of the last one zener diode is electrically connected in the zener diode group
It connects, the output end of the discharge circuit is used for being electrically connected the electronic equipment for needing negative voltage, the other end of the first capacitor
In electrical connection external voltage source；
The zener diode charges to the first capacitor for controlling the external voltage source, makes the charging electricity
Rood is to stable positive voltage；And the control first capacitor electric discharge charges to the discharge circuit；The discharge circuit is used
In the positive voltage of the charging circuit is converted to stable negative voltage, and the negative voltage is supplied to the electronics and is set
It is standby；Wherein, the quantity for the zener diode for including in the zener diode group is different, and the discharge circuit is the electricity
The negative voltage that sub- equipment provides is different.
As an alternative embodiment, the charging circuit further includes the one or two in the utility model embodiment
Pole pipe, in which:
The anode of the last one zener diode in the zener diode group and the first diode are just
Pole electrical connection, the cathode of the first diode is for being grounded.
As an alternative embodiment, the discharge circuit includes the two or two pole in the utility model embodiment
Pipe and the second capacitor, in which:
The last one described zener diode in the cathode of second diode and the zener diode group is just
The anode of pole electrical connection, second diode is electrically connected with one end of second capacitor, the other end of second capacitor
For being grounded, the anode of second diode is for being electrically connected the electronic equipment.
As an alternative embodiment, in the utility model embodiment, when the electricity of external voltage source output
When pressure is high level, the high level charges to the first capacitor by the zener diode group, the first diode；
When the voltage of external voltage source output is low level, the first capacitor passes through the zener diode group, described the
The electric discharge of second capacitor described in two diode pairs.
As an alternative embodiment, in the utility model embodiment, when the electricity of external voltage source output
It is pressed in when constantly being converted between the high level and the low level, the zener diode group controls the first capacitor and institute
The second capacitor charge and discharge is stated, stable negative voltage is provided for the electronic equipment.
As an alternative embodiment, further including driving circuit in the utility model embodiment, in which:
The output end of the driving circuit is electrically connected with the other end of the first capacitor, the input terminal of the driving circuit
For being electrically connected with the external voltage source.
Implement the utility model, has the following beneficial effects:
A kind of negative voltage regulator circuit provided by the utility model, the circuit include charging circuit and discharge circuit, charging electricity
Road includes first capacitor and zener diode group, and zener diode group includes at least two series connection zener diodes, is put
Circuit includes the second diode and the second capacitor；First capacitor and the second capacitor charge and discharge are controlled by zener diode group,
Stable negative voltage, and the quantity by changing zener diode are provided for electronic equipment, is embodied as electronic equipment and provides not
Same negative voltage, and circuit is simple, clear in structure, cost is relatively low, is easily achieved.
Detailed description of the invention
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is the basic schematic diagram that prior art negative pressure circuit generates；
Fig. 2 is a kind of structural schematic diagram of negative voltage regulator circuit disclosed in the utility model embodiment；
Fig. 3 is the structural schematic diagram of the negative voltage regulator circuit of another kind disclosed in the utility model embodiment；
Fig. 4 is the structural schematic diagram of another negative voltage regulator circuit disclosed in the utility model embodiment.
Specific embodiment
In order to better understand and implement, the following will be combined with the drawings in the embodiments of the present invention, to the utility model
Implement
Technical solution in example is clearly and completely described, it is clear that described embodiment is only the utility model
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, is fallen within the protection scope of the utility model.
It should be noted that unless otherwise clearly defined and limited, the specification and claims of the utility model
And the term " electrical connection " in above-mentioned attached drawing shall be understood in a broad sense, for example, it may be fixed electrical connection, is also possible to detachable electricity
Connection, or be integrally electrically connected；It can be mechanical electrical connection, be also possible to electricity electrical connection or can mutually communicate；It can be straight
It connects connected, the connection inside two elements or the phase interaction of two elements can also be can be indirectly connected through an intermediary
With relationship.In addition, the specification and claims of the utility model and term " first " in above-mentioned attached drawing, " second " etc. are
For distinguishing different objects, it is not use to describe a particular order, term " includes " and " having " and their any deformations, meaning
Figure, which is to cover, non-exclusive includes.For the ordinary skill in the art, can understand as the case may be above-mentioned
The concrete meaning of term in the present invention.
Embodiment one
Referring to Fig. 2, Fig. 2 is a kind of structural schematic diagram of negative voltage regulator circuit disclosed in the utility model embodiment, use
In by the positive voltage of input be converted to can flexible modulation, stable different negative voltages, be applied to as liquid crystal display (LCD,
LED), computer (palm PC, tablet computer, desktop computer, portable computer etc.), television set, smart phone (Android hand
Machine, iOS mobile phone etc.), smart phone smartwatch, projector, camera and mobile internet device (Mobile
Internet Devices, MID) etc. in electronic equipments, the utility model embodiment is without limitation.As shown in Fig. 2, the negative pressure tune
Economize on electricity road 200 includes charging circuit 201 and discharge circuit 202, and charging circuit includes first capacitor C1 and zener diode group
ZD, zener diode group W include at least two series connection zener diode ZD, in which:
One end of first capacitor C1 is electrically connected with the cathode of first zener diode ZD1 in zener diode group W, pressure stabilizing
The anode of the last one zener diode ZDn is electrically connected with the input terminal of discharge circuit 202 in diode group W, discharge circuit 202
Output end for be electrically connected the electronic equipment Q for needing negative voltage, the other end of first capacitor C1 is used to be electrically connected external voltage
Source I；
Zener diode ZD charges to first capacitor C1 for controlling external voltage source I, stablizes charging circuit 201
Positive voltage；And control first capacitor C1 electric discharge charges to discharge circuit 202；Discharge circuit 202 is used for charging circuit 201
Positive voltage be converted to stable negative voltage, and negative voltage is supplied to electronic equipment；Wherein, include in zener diode group W
Zener diode ZD quantity it is different, discharge circuit 202 is that the negative voltage that electronic equipment Q is provided is different.
As an alternative embodiment, in the utility model embodiment, referring to Fig. 2, charging circuit 202 also wraps
Include first diode D1, in which:
The anode of the anode and first diode D1 of the last one zener diode ZD in zener diode group W is electrically connected
It connects, the cathode of first diode D1 is for being grounded G.
As an alternative embodiment, in the utility model embodiment, referring to Fig. 2, discharge circuit 202 includes
Second diode D2 and the second capacitor C2, in which:
The cathode of second diode D2 and the anode of the last one zener diode ZDn in zener diode group W are electrically connected
It connecing, the anode of the second diode D2 is electrically connected with one end of the second capacitor C2, and the other end of the second capacitor C2 is used to be grounded G, the
The anode of two diode D2 is for being electrically connected electronic equipment Q.
It should be noted that zener diode group w can also only include a zener diode ZD.
The working principle of negative voltage regulator circuit 200 in the utility model embodiment is as follows:
In the utility model embodiment, when the voltage of external voltage source I output is high level VDD, first diode D1
State in forward voltage, the second diode D2 are in the state of backward voltage, according to the one-way conduction characteristic of diode, this
When first diode D1 it is in the conductive state, the second diode D2 is in off state, i.e. branch where first diode D1 is led
Logical, the branch where the second diode D2 disconnects, and zener diode group W is in the state of backward voltage, according to two pole of pressure stabilizing
The backward voltage principle of pipe, branch where zener diode group W is in the conductive state at this time, i.e. external voltage source I, first capacitor
C1, zener diode group W, first diode D1 and ground G constitute circuit, then high level VDD passes through zener diode group W, first
Diode D1 charges to first capacitor C1, and the flow direction of electric current is external voltage source I high level VDD to first capacitor C1 to pressure stabilizing two
Pole pipe group W to first diode D1 to ground G, and according to the backward voltage principle of zener diode, when passing through zener diode two
When the backward voltage at end is not more than the burning voltage of zener diode, the electric current of branch is stablized where zener diode, so that with
The voltage stabilization at the concatenated component both ends of zener diode, i.e., with the both ends zener diode group W concatenated first capacitor C1
Voltage stabilization, at this time the potential right low left high of first capacitor C1；When the voltage of external voltage source I output is low level VSS, the
The potential right low left high at one both ends capacitor C1, the second diode D2 are in the state of forward voltage, and first diode D1 is in anti-
To the state of voltage, similarly according to the one-way conduction characteristic of diode, the second diode D2 is in the conductive state at this time, and the one or two
Pole pipe D1 is in off state, i.e., branch conducting where the second diode D2, the branch where first diode D1 disconnects, and steady
Pressure diode group W is in the state of forward voltage, according to the forward voltage principle of zener diode, zener diode group W at this time
Function as a common diode, i.e. branch where zener diode group W is similarly on state, so external
Voltage source I, first capacitor C1, zener diode group W, the second diode D2 and ground G constitute circuit, then first capacitor C1 passes through steady
Pressure diode group W, the second diode D2 discharge to the second capacitor C2, i.e. first capacitor C1 charges to the second capacitor C2, electric current
Flow direction is that ground G to the second capacitor C2 is low to first capacitor C1 to external voltage source I to the second diode D2 to zener diode group W
Level VSS, height is upper low under the potential of the second capacitor C2 at this time, i.e. the electricity of the second capacitor C2 and the one end being electrically connected electronic equipment Q
Important and influential persons is low than the other end that the second capacitor C2 is electrically connected with ground (potential zero), and stable negative voltage is provided for electronic equipment Q；
When the voltage of external voltage source I output constantly converts between high level VDD and low level VSS, zener diode group W control
First capacitor C1 and the second capacitor C2 charge and discharge provide stable negative voltage for electronic equipment Q, and by changing two pole of pressure stabilizing
The quantity of pipe ZD is embodied as electronic equipment Q and provides different negative voltages.Wherein, first diode and the second diode can be by
The other electronic components that can play the role of same one-way conduction replace, such as: metal-oxide-semiconductor etc.；Zener diode can be by energy
The other electronic components for enough playing the role of same conducting and pressure stabilization function replace, such as pressure stabilizing triode；External voltage source can
It is replaced with that can be played the role of providing voltage source or the voltage source circuit of same voltage, is not made in the utility model embodiment
It limits.As it can be seen that implementing the utility model embodiment, first capacitor and the second capacitor charge and discharge are controlled by zener diode group,
Stable negative voltage, and the quantity by changing zener diode are provided for electronic equipment, is embodied as electronic equipment and provides not
Same negative voltage, and circuit is simple, clear in structure, cost is relatively low, is easily achieved.
It is further preferred that on the basis of the above embodiments, referring to Fig. 3, Fig. 3 is that the utility model embodiment discloses
The negative voltage regulator circuit of another kind structural schematic diagram, as shown in figure 3, for each zener diode ZD controller in parallel
K by the conducting of controller K or is not turned on and controls zener diode ZD's in running order in zener diode group W
Quantity, so that negative pressure adjusts more flexible.For example, zener diode group W mono- shares 10 zener diode ZD,
In a kind of situation, 5 controller K for conveying preceding 5 zener diodes ZD parallel connection are connected, in parallel with rear 5 zener diode ZD
5 controller K be not turned on, then preceding 5 zener diode ZD are in off position, then at 5 zener diode ZD
In working condition；In another case, 1 controller K conducting of preceding 1 zener diode ZD parallel connection is conveyed, it is steady with latter 9
9 controller K of pressure diode ZD parallel connection are not turned on, then preceding 1 zener diode ZD is in off position, then 9
Zener diode ZD is in running order, adjusts negative pressure more flexible.Wherein, wherein controller K conducting is equivalent to
Short circuit, controller K, which is not turned on, is equivalent to open circuit；The electronic component that control device can be played on-off action replaces,
Such as: switch S, triode etc..As it can be seen that can be adjusted by being switched for each zener diode one in parallel more flexiblely
Negative pressure is saved, keeps the negative pressure of output finer, more acurrate.
Embodiment two
It is further preferred that referring to Fig. 4, Fig. 4 is another negative voltage regulator circuit disclosed in the utility model embodiment
Structural schematic diagram.For by the positive voltage of input be converted to can flexible modulation, stable different negative voltages, while increasing negative
The load capacity of voltage regulator circuit is applied to as liquid crystal display (LCD, LED), computer are (palm PC, tablet computer, desk-top
Computer, portable computer etc.), television set, smart phone (Android phone, iOS mobile phone etc.), smart phone, smartwatch,
In the electronic equipments such as projector, camera and mobile internet device (Mobile Internet Devices, MID), this reality
Without limitation with new embodiment.As shown in figure 4, negative pressure adjusts electricity in the structure basis of negative voltage regulator circuit shown in Fig. 2
Road 200 can also include driving circuit 203, the electricity between the charging circuit 201 and discharge circuit 202 of negative voltage regulator circuit 200
Connection relationship looks at the explanation of embodiment a pair of Fig. 2, and details are not described herein.One end of first capacitor C1 and the transmitting of triode V1
The emitter e electrical connection of pole e, triode V2, the current collection grade c of triode V2 is for G, the emitting stage e of triode V1 electrically
It is electrically connected with the emitter e of triode V2, the collector c of triode V1 is used to be electrically connected external voltage source I, second resistance R2's
One end is electrically connected with the base stage b of triode V1, the other end of second resistance R2 respectively with one end of first resistor R1, third capacitor
One end of C3 is electrically connected, and one end of the 4th resistance R4 is electrically connected with the base stage b of triode V2, the other end difference of the 4th resistance R4
It is electrically connected with one end of one end of 3rd resistor R3, the 4th capacitor C4, pulse-modulator PWM is another with first resistor R1 respectively
The other end electrical connection at end, the other end of 3rd resistor R3, the other end of third capacitor C3, the 4th capacitor C4.Wherein, triode
V2 is PNP type triode, and working condition is common collector, and triode V1 is NPN type triode, and working condition is cascode grade.Its
In, the working principle of negative voltage regulator circuit 200 described in Fig. 4 is specific as follows:
In the utility model embodiment, when external voltage source I and pulse-modulator PWM is high level VDD, high level
Triode V1 is connected by first resistor R1, second resistance R2 in VDD, triode V2 cut-off, at this point, pulse-modulator PWM is logical
The high level VDD for crossing the collector c external voltage source I of first resistor R1, second resistance R2, third capacitor C3 and triode V1 is logical
The emitting stage e and collector c (ce knot) of triode V1, first capacitor C1, zener diode group W, first diode D1 are crossed to
One capacitor C1 charges, and charging process please refers to embodiment one, and details are not described herein.When external voltage source I and impulse modulation
When device PWM is low level VSS, low level VSS makes triode V2 conducting, triode by 3rd resistor R3, the 4th resistance R4
V1 cut-off, at this point, since the level of the one end connecting with the emitter e of triode V1 and triode V2 first capacitor C1 is low electricity
Flat VSS, so first capacitor C1 discharges to the second capacitor C2 by zener diode group W, the second diode D2, i.e., first
Capacitor C1 charges to the second capacitor C2, and discharge process please refers to embodiment one, and details are not described herein.When external voltage source I is exported
Voltage and the voltage of pulse-modulator PWM when constantly being converted between high level VDD and low level VDD, zener diode group W
First capacitor C1 and the second capacitor C2 charge and discharge are controlled, stable negative voltage are provided for electronic equipment Q, and by changing pressure stabilizing
The quantity of diode ZD is embodied as electronic equipment Q and provides different negative voltages.Wherein, first diode and the second diode can
It is replaced so that other electronic components of same one-way conduction can be played the role of, such as: metal-oxide-semiconductor etc.；Zener diode can be with
The other electronic components that can be played the role of same conducting and pressure stabilization function replace, such as pressure stabilizing triode；External voltage
Source can be played the role of providing the voltage source of same voltage or voltage source circuit replaces, in the utility model embodiment
It is not construed as limiting.As it can be seen that implementing the utility model embodiment, by increasing driving circuit, so that the band of negative voltage regulator circuit carries energy
Power is reinforced, and the transfer efficiency and reliability of negative voltage regulator circuit are improved, and passes through the first electricity of zener diode group control
Hold with the second capacitor charge and discharge, stable negative voltage is provided for electronic equipment, and by the quantity of change zener diode, it is real
Different negative voltages is now provided for electronic equipment, and circuit is simple, clear in structure, cost is relatively low, is easily achieved.
Detailed Jie has been carried out to the negative voltage regulator circuit in a kind of electronic equipment disclosed in the utility model embodiment above
It continues, specific embodiment used herein is expounded the principles of the present invention and embodiment, but above-mentioned preferred reality
Example is applied not to limit the utility model, the method for the above embodiments are only used to help understand the utility model and
Its core concept；At the same time, for those skilled in the art, it is based on the idea of the present invention, practical not departing from
In novel spirit and scope, there will be changes in the specific implementation manner and application range, therefore the utility model
Protection scope is with the range that claim defines.
Claims (6)
1. a kind of negative voltage regulator circuit, which is characterized in that the negative voltage regulator circuit includes charging circuit and discharge circuit, described
Charging circuit includes first capacitor and zener diode group, and the zener diode group includes at least two series connection pressure stabilizings
Diode, in which:
One end of the first capacitor is electrically connected with the cathode of first zener diode in the zener diode group, institute
The anode for stating the zener diode of the last one in zener diode group is electrically connected with the input terminal of the discharge circuit, described
The output end of discharge circuit is for being electrically connected the electronic equipment for needing negative voltage, and the other end of the first capacitor is for being electrically connected
External voltage source；
The zener diode charges to the first capacitor for controlling the external voltage source, obtains the charging circuit
To stable positive voltage；And the control first capacitor electric discharge charges to the discharge circuit；The discharge circuit, being used for will
The positive voltage of the charging circuit is converted to stable negative voltage, and the negative voltage is supplied to the electronic equipment；
Wherein, the quantity for the zener diode for including in the zener diode group is different, and the discharge circuit is the electronics
The negative voltage that equipment provides is different.
2. negative voltage regulator circuit according to claim 1, which is characterized in that the charging circuit further includes the one or two pole
Pipe, in which:
The anode electricity of the anode of the last one zener diode in the zener diode group and the first diode
Connection, the cathode of the first diode is for being grounded.
3. negative voltage regulator circuit according to claim 2, which is characterized in that the discharge circuit include the second diode and
Second capacitor, in which:
The anode electricity of the last one zener diode in the cathode of second diode and the zener diode group
The anode of connection, second diode is electrically connected with one end of second capacitor, and the other end of second capacitor is used for
Ground connection, the anode of second diode is for being electrically connected the electronic equipment.
4. negative voltage regulator circuit according to claim 3, which is characterized in that when the voltage of external voltage source output is
When high level, the high level charges to the first capacitor by the zener diode group, the first diode；Work as institute
When the voltage for stating the output of external voltage source is low level, the first capacitor passes through the zener diode group, the described 2nd 2
Pole pipe discharges to second capacitor.
5. negative voltage regulator circuit according to claim 4, which is characterized in that when the voltage of external voltage source output exists
When constantly converting between the high level and the low level, the zener diode group controls the first capacitor and described the
Two capacitor charge and discharges provide stable negative voltage for the electronic equipment.
6. negative voltage regulator circuit according to claim 1, which is characterized in that further include driving circuit, in which:
The output end of the driving circuit is electrically connected with the other end of the first capacitor, and the input terminal of the driving circuit is used for
It is electrically connected with the external voltage source.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821199352.4U CN208539785U (en) | 2018-07-26 | 2018-07-26 | A kind of negative voltage regulator circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821199352.4U CN208539785U (en) | 2018-07-26 | 2018-07-26 | A kind of negative voltage regulator circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247546A (en) * | 2019-06-04 | 2019-09-17 | 苏州汇川联合动力系统有限公司 | Non-isolation type biswitch reduction voltage circuit and DC-DC converter |
| CN113394969A (en) * | 2020-12-22 | 2021-09-14 | 青岛鼎信通讯股份有限公司 | Negative voltage generation circuit applied to acquisition terminal |
| CN114342237A (en) * | 2021-11-11 | 2022-04-12 | 武文静 | Negative bootstrap circuit, micro-energy device and control method thereof |
| CN116317545A (en) * | 2023-05-11 | 2023-06-23 | 上海泰矽微电子有限公司 | Negative-pressure charge transfer circuit and capacitive touch detection circuit |
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2018
- 2018-07-26 CN CN201821199352.4U patent/CN208539785U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247546A (en) * | 2019-06-04 | 2019-09-17 | 苏州汇川联合动力系统有限公司 | Non-isolation type biswitch reduction voltage circuit and DC-DC converter |
| CN113394969A (en) * | 2020-12-22 | 2021-09-14 | 青岛鼎信通讯股份有限公司 | Negative voltage generation circuit applied to acquisition terminal |
| CN114342237A (en) * | 2021-11-11 | 2022-04-12 | 武文静 | Negative bootstrap circuit, micro-energy device and control method thereof |
| CN114342237B (en) * | 2021-11-11 | 2023-01-24 | 武文静 | Negative bootstrap circuit, micro energy equipment and control method thereof |
| WO2023082135A1 (en) * | 2021-11-11 | 2023-05-19 | 武文静 | Negative bootstrap circuit, micro-energy device, and control method for negative bootstrap circuit |
| CN116317545A (en) * | 2023-05-11 | 2023-06-23 | 上海泰矽微电子有限公司 | Negative-pressure charge transfer circuit and capacitive touch detection circuit |
| CN116317545B (en) * | 2023-05-11 | 2023-08-08 | 上海泰矽微电子有限公司 | Negative-pressure charge transfer circuit and capacitive touch detection circuit |
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