CN110401334A - Timesharing electrical control circuit and high-voltage drive - Google Patents
Timesharing electrical control circuit and high-voltage drive Download PDFInfo
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- CN110401334A CN110401334A CN201910809052.6A CN201910809052A CN110401334A CN 110401334 A CN110401334 A CN 110401334A CN 201910809052 A CN201910809052 A CN 201910809052A CN 110401334 A CN110401334 A CN 110401334A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
Abstract
The present invention is suitable for technical field of circuit design, provides a kind of timesharing electrical control circuit and high-voltage drive.The timesharing electrical control circuit includes under-voltage latch module, timesharing drive module and discharge tube；Under-voltage latch module receives the driving signal of external drive signal source, exports the first driving signal according to the enable signal in external enable signal source and gives timesharing drive module, exports the second driving signal to discharge tube；Timesharing drive module controls the charge or discharge of external high pressure power tube according to the first driving signal；In external high-voltage power tube discharge, discharge tube is released according to voltage of second driving signal to the drain electrode of external high-voltage power pipe.The configuration of the present invention is simple, small in size, low in energy consumption and adaptability are good, while meeting the cut-in voltage of high-voltage power pipe, have cut traditional peripheral storage capacitor, have reduced the complexity of high-voltage drive, high reliablity.
Description
Technical field
The invention belongs to technical field of circuit design more particularly to a kind of timesharing electrical control circuits and high-voltage drive.
Background technique
High-voltage drive is mainly used in the power modulation system of power amplifier, drives high-voltage power pipe, output modulation
Voltage.The grid source breakdown voltage of high-voltage power pipe product is about 20V at this stage, so high-voltage drive need to introduce medium voltage production
Raw unit provides suitable voltage for high-voltage power pipe.But conventional high-tension driver generates the circuit of medium voltage, and that there are reliabilities is low
The problem of.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of timesharing electrical control circuit and high-voltage drive, it is high to solve tradition
Pressure driver leads to the problem of the circuit of medium voltage, and that there are reliabilities is low.
First aspect of the embodiment of the present invention provides a kind of timesharing electrical control circuit, comprising: under-voltage latch module, timesharing driving
Module and discharge tube；
The input terminal of the under-voltage latch module is suitable for connecting with external drive signal source, and enable end is suitable for enabled with outside
Signal source connection, the first output end are connect with the input terminal of the timesharing drive module, second output terminal and the discharge tube
First end connection；The output end of the timesharing drive module is suitable for connecting with the grid of external high pressure power tube；The discharge tube
Second end be suitable for connect with the drain electrode of external high pressure power tube；
The under-voltage latch module receives the driving signal of external drive signal source, according to the enabled of external enable signal source
Signal exports the first driving signal to the timesharing drive module, exports the second driving signal to the discharge tube；The timesharing
Drive module controls the external high pressure power tube charge or discharge according to first driving signal；In external high-voltage power pipe
When electric discharge, the discharge tube is released according to voltage of second driving signal to the drain electrode of external high-voltage power pipe.
Optionally, the timesharing drive module includes: logic unit, the first current source, the second current source, third electric current
Source, the 4th current source, first switching element, second switch element, third switch element and the 4th switch element；
The input terminal of the logic unit is connect with the first output end of the under-voltage latch module, the logic unit
First output end is connect with the signal end of the first switching element, and the second output terminal of the logic unit is opened with described second
The signal end connection of element is closed, the third output end of the logic unit is connect with the signal end of the third switch element, institute
The 4th output end for stating logic unit is connect with the signal end of the 4th switch element；
The first end of the first switching element is connect with the second end of first current source, the first switching element
Second end be all connected with the grid of the external high pressure power tube and the first end of second switch element；The second switch member
The second end of part is connect with the first end of second current source；
The first end of the third switch element is connect with the second end of the third current source, the third switch element
Second end be all connected with the grid of the external high pressure power tube and the first end of the 4th switch element；The 4th switch member
The second end of part is connect with the first end of the 4th current source；
The first end of first current source and the first end of the third current source are connect with external power supply, and described
The second end of two current sources and the second end of the 4th current source are grounded.
Optionally, the timesharing drive module further include: clamper；
The first end of the clamper is connect with the first end of the third current source, the second end of the clamper and institute
State the second end connection of third switch element.
Optionally, the timesharing drive module further include: logic unit, the first NMOS tube, the second NMOS tube, the 3rd NMOS
Pipe, the 4th NMOS tube, the first PMOS tube, the second PMOS tube, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th
Resistance and the 6th resistance；
The input terminal of the logic unit is connect with the first output end of the under-voltage latch module, the logic unit
First output end is connect with the grid of first NMOS tube, the second output terminal of the logic unit and second NMOS tube
Grid connection, the third output end of the logic unit connect with the grid of the third NMOS tube, the logic unit
4th output end is connect with the grid of the 4th NMOS tube；
The source electrode of first NMOS tube is connect with the grid of the second end of the first resistor and first PMOS tube,
The drain electrode of first NMOS tube is connect with the first end of the second resistance；The source electrode of second NMOS tube and described first
The drain electrode of PMOS tube is connected with the grid of the external high pressure power tube, the drain electrode and the 3rd resistor of second NMOS tube
First end connection；The source electrode of the third NMOS tube and the second end of the 4th resistance and the grid of second PMOS tube
Connection, the drain electrode of the third NMOS tube are connect with the first end of the 5th resistance；The source electrode of 4th NMOS tube and institute
The drain electrode for stating the second PMOS tube is connected with the grid of the external high pressure power tube, the drain electrode of the 4th NMOS tube and described the
The first end of six resistance connects；
The first end of the first resistor, the source electrode of the first PMOS tube, the first end of the 4th resistance and the second PMOS tube
Source electrode is connect with external power supply；The second end of the second resistance, the second end of the 3rd resistor, the 5th resistance
Second end and the second end of the 6th resistance are grounded.
Optionally, the timesharing drive module further include: first diode and the second diode；
The anode of the first diode is connect with the grid of the external high pressure power tube, the yin of the first diode
Pole is connect with the anode of second diode, and the cathode of the second diode is connect with external power supply.
Optionally, the timesharing electrical control circuit further include: the voltage for providing predeterminated voltage for the under-voltage latch module turns
Change the mold block；
The input terminal of the voltage transformation module is suitable for connecting with external power supply, output end and the under-voltage latch module
Voltage end connection.
Optionally, the timesharing electrical control circuit further include: the Postponement module that the enable signal is postponed；
The input terminal of the Postponement module is suitable for connecting with the external enable signal source, the output end of the Postponement module
It is connect with the enable end of the under-voltage latch module.
Optionally, the timesharing electrical control circuit further include: level shift module；
The input terminal of the level shift module is connect with the first output end of the under-voltage latch module, and the level moves
The output end of position module is connect with the input terminal of the timesharing drive module.
Optionally, the discharge tube is NMOS tube.
Second aspect of the embodiment of the present invention provides a kind of high-voltage drive, including high-voltage power pipe and power amplifier,
It further include the described in any item timesharing electrical control circuits provided such as embodiment first aspect；
Wherein, the first end of the power amplifier is connect with the drain electrode of the high-voltage power pipe, the power amplifier
Second end ground connection.
Existing beneficial effect is the embodiment of the present invention compared with prior art: the timesharing electrical control circuit mainly includes under-voltage
Latch module, timesharing drive module and discharge tube, structure is simple, at low cost, simplifies the volume of driver, low in energy consumption and adaptation
Property is good；Wherein, under-voltage latch module receives the driving signal of external drive signal source, according to the enabled letter in external enable signal source
Number exporting the first driving signal gives timesharing drive module, exports the second driving signal to discharge tube, timesharing drive module is according to
One driving signal controls the charge or discharge of external high pressure power tube, and in external high-voltage power tube discharge, discharge tube is according to
Second driving signal releases to the voltage of the drain electrode of external high-voltage power pipe, so that the driving circuit of the present embodiment is meeting
While the cut-in voltage of high-voltage power pipe, traditional peripheral storage capacitor is cut, the complexity of high-voltage drive is reduced,
High reliablity.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural schematic diagram of timesharing electrical control circuit provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another timesharing electrical control circuit provided in an embodiment of the present invention；
Fig. 3 is the circuit diagram of timesharing drive module provided in an embodiment of the present invention；
Fig. 4 is the circuit diagram of another timesharing drive module provided in an embodiment of the present invention；
Fig. 5 is the waveform diagram of four kinds of signals of logic unit output provided in an embodiment of the present invention.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific
The present invention also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, in case unnecessary details interferes description of the invention.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
Referring to Fig. 1, a kind of timesharing electrical control circuit provided in this embodiment, including under-voltage latch module 100, timesharing drive mould
Block 200 and discharge tube 300；The input terminal INPUT of under-voltage latch module 100 is suitable for connecting with external drive signal source, under-voltage lock
The enable end EN of storing module 100 is suitable for connecting with external enable signal source, the first output end OUT_H of under-voltage latch module 100
It is connect with the input terminal IN of timesharing drive module 200, the second output terminal OUT_L and the discharge tube of under-voltage latch module 100
300 first end connection；The output end GN of timesharing drive module 200 is suitable for connecting with the grid of external high pressure power tube；Electric discharge
The second end of pipe 300 is suitable for connecting with the drain electrode of external high pressure power tube.
In practical application, high-voltage drive is mainly used in the power modulation system of power amplifier, drives high-voltage power
Pipe exports modulation voltage.Conventional half-bridge formula driver is charge pumps circuit theory, is generated by low pressure difference linear voltage regulator
Between voltage, and storage capacitor is accessed between medium voltage and supply voltage.Due to continuous to power-supply system volumetric constraint at present
It improves, quantity, the size of peripheral component are constantly restricted, and the peripheral component size of half-bridge driver is difficult to adapt to electricity
Many requirements of the source modulating system to reliability.The present embodiment uses timesharing electronic control technology framework driver, introduces timing control
High-voltage power pipe is switched on and off, and not only saves high side section " ground " current potential, can also be built in the discharge tube 300 of downside
In driver, peripheral high side storage capacitor is thoroughly eliminated, after the shutdown of high-voltage power pipe, power amplifier (or high-voltage power
The drain electrode of pipe) residual charge can all be released by discharge tube 300, so that the transformation efficiency of power-amplifier level is improved, drop
The low application complexity of high-voltage drive chip, it is easier to the realization of miniaturization.
Specifically, under-voltage latch module 100 receives the driving signal of external drive signal source, such as TTL
(Transistor-Transistor Logic, transistor-transistor logic circuit) signal, according to external enable signal source
Enable signal exports the first driving signal to timesharing drive module 200, exports the second driving signal to discharge tube 300；Timesharing is driven
Dynamic model block 200 controls the charge or discharge of external high pressure power tube according to first driving signal；When external high pressure power tube is opened
When opening (charging), it is that power amplifier is directly powered, and is avoided that the drain potential of high-voltage power pipe, which follows outer power voltage,
It is powered using charge pump type framework, in external high-voltage power tube discharge, discharge tube 300 is external according to second driving signal
The voltage of the drain electrode of portion's high-voltage power pipe is released.The present embodiment can be widely applied to high speed power amplifier modulating driver chip
In.
Above-mentioned timesharing electrical control circuit, structure is simple, at low cost, small in size, and driving power consumption, application adaptability is greatly reduced
It is good；Wherein, the combination of timesharing drive module 200 and discharge tube 300, so that timesharing electrical control circuit is meeting opening for high-voltage power pipe
While opening voltage, peripheral high side storage capacitor is thoroughly eliminated, the complexity of high-voltage drive is reduced, can preferably be driven
Dynamic high-voltage power pipe and the trouble free service for guaranteeing high power load.
Optionally, the first driving signal and the second driving signal that under-voltage latch module 100 exports are the letter with dead zone
Number, can to avoid because enable repeatedly-not enable circulation and caused by vibrate, guarantee the stability of circuit.The present embodiment pair
The specific structure of under-voltage latch module 100 can be under-voltage latch chip without limitation, or specific under-voltage latch electricity
Road, such as logic control undervoltage latch circuit.
Optionally, the discharge tube 300 of the present embodiment can be NMOS tube.
In one embodiment, referring to Fig. 3, timesharing drive module 200 may include: logic unit, the first current source I1,
Two current source I2, third current source I3, the 4th current source I4, first switching element SW1, second switch element SW2, third switch
Element SW3 and the 4th switch element SW4.The input terminal of logic unit and the first output end OUT_H of under-voltage latch module 100 connect
It connects, the first output end of logic unit is connect with the signal end of first switching element SW1, the second output terminal of logic unit and the
The signal end of two switch element SW2 connects, and the third output end of logic unit is connect with the signal end of third switch element SW3,
4th output end of logic unit is connect with the signal end of the 4th switch element SW4；The first end of first switching element SW1 and the
The second end of one current source I1 connects, and the second end of first switching element SW1 is opened with the grid of external high pressure power tube and second
The first end for closing element SW2 is all connected with；The second end of second switch element SW2 is connect with the first end of the second current source I2；
The first end of third switch element SW3 is connect with the second end of third current source I3, and the of third switch element SW3
Two ends are all connected with the grid of external high pressure power tube and the first end of the 4th switch element SW4；The of 4th switch element SW4
Two ends are connect with the first end of the 4th current source I4；The first end of first current source I1 and the first end of third current source I3 with
External power supply connection, the second end of the second current source I2 and the second end of the 4th current source I4 are grounded.
Specifically, the timesharing drive module 200 of the present embodiment is set based on high-voltage power pipe switching characteristic.Logic
Unit can generate control signal of the tetra- kinds of signals of n1~n4 as four switch elements according to the first driving signal, such as Fig. 3 and
Shown in Fig. 5.It controls signal n1 and controls first switching element SW1, the first current source I1 is height when first switching element SW1 closure
Press the gate charges of power tube；It controls signal n2 and controls second switch element SW2, when second switch element SW2 closure second
Current source I2 is the gate discharge of high-voltage power pipe.High-voltage power pipe only needs big electric current will in the moment of unlatching (or shutdown)
Parasitic gate capacitor fill and (put) to setting voltage value, after completing this charge/discharge process, only need low current keep it turning on or
Off state, therefore the electric current of the first current source I1 of the present embodiment is x times of (x > 2, the high-voltage power of third current source I3
The gate capacitance of pipe is bigger, and x value is bigger), the electric current of the second current source I2 be the 4th current source I4 y times (y > 2, high-voltage power pipe
Gate capacitance is bigger, and y value is bigger), and control signal n1 and n2 than control signal n3 and n4 unbalanced pulse width it is narrow, this
Sample can both guarantee that high-voltage power pipe is quickly switched on or off, and also saved the power consumption of driver.
Optionally, the timesharing drive module 200 of the present embodiment can also include: clamper；The first end of clamper and the
The first end of three current source I3 connects, and the second end of clamper is connect with the second end of third switch element SW3.In order to keep high
Grid level when power tube being pressed to open is no more than the tolerance value of grid voltage, and the timesharing drive module 200 of the present embodiment is added
Clamper, grid level when high-voltage power pipe is opened are stablized in setting range.
In another embodiment, referring to fig. 4, timesharing drive module 200 can also include: logic unit, the first NMOS
Pipe MN1, the second NMOS tube MN2, third NMOS tube MN3, the 4th NMOS tube MN4, the first PMOS tube MP1, the second PMOS tube MP2,
First resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5 and the 6th resistance R6.Logic unit
Input terminal is connect with the first output end OUT_H of under-voltage latch module 100, the first output end and the first NMOS tube of logic unit
The grid of MN1 connects, and the second output terminal of logic unit is connect with the grid of the second NMOS tube MN2, and the third of logic unit is defeated
Outlet is connect with the grid of third NMOS tube MN3, and the 4th output end of logic unit is connect with the grid of the 4th NMOS tube MN4.
The source electrode of first NMOS tube MN1 is connect with the grid of the second end of first resistor R1 and the first PMOS tube MP1, and first
The drain electrode of NMOS tube MN1 is connect with the first end of second resistance R2；The source electrode of second NMOS tube MN2 and the first PMOS tube MP1's
Drain electrode is connected with the grid of external high pressure power tube, and the drain electrode of the second NMOS tube MN2 is connect with the first end of 3rd resistor R3；The
The source electrode of three NMOS tube MN3 is connect with the grid of the second end of the 4th resistance R4 and the second PMOS tube MP2, third NMOS tube MN3
Drain electrode connect with the first end of the 5th resistance R5；The drain electrode of the source electrode of 4th NMOS tube MN4 and the second PMOS tube MP2 and outside
The grid of high-voltage power pipe connects, and the drain electrode of the 4th NMOS tube MN4 is connect with the first end of the 6th resistance R6；First resistor R1's
First end, the source electrode of the first PMOS tube MP1, the first end of the 4th resistance R4 and the second PMOS tube MP2 source electrode and external electrical
Source connection；The second end of second resistance R2, the second end of 3rd resistor R3, the second end of the 5th resistance R5 and the 6th resistance R6
Second end is grounded.
Optionally, timesharing drive module 200 can also include: first diode DZ1 and the second diode DZ2；One or two
The anode of pole pipe DZ1 is connect with the grid of external high pressure power tube, the cathode of first diode DZ1 and the second diode DZ2's
Anode connection, the cathode of the second diode DZ2 are connect with external power supply.Illustratively, first diode DZ1 and the second diode
DZ2 can be Zener diode.
Specifically, the first NMOS tube MN1, the first PMOS tube MP1, third NMOS tube MN3 and the second PMOS tube MP2 are opened
When, it is powered on for high-voltage power pipe；It is high-voltage power tube discharge when second NMOS tube MN2 and the 4th NMOS tube MN4 is opened；First electricity
It is big to hinder R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5 and each branch current of the 6th resistance R6 control
It is small, it is equivalent to the effect of current source；First diode DZ1 and the second diode DZ2 realizes clamping action, and clamped voltage can be big
In 10V.
In conjunction with Fig. 5 it is found that first half cycle, control signal n1 and n3 are that level is got higher by low level, the first NMOS tube MN1 and
Third NMOS tube MN3 is simultaneously turned on, and the grid current potential of the first PMOS tube MP1 and the second PMOS tube MP2 are pulled low, the first NMOS tube
MN1 and third NMOS tube MN3 conducting to high-voltage power pipe carry out quick charge, control signal n1 burst pulse after (by height
When being lower) the first NMOS tube MN1 is prior to third NMOS tube MN3 shutdown, and the first NMOS is closed at this time and third NMOS tube MN3 continues
Conducting, the grid current potential that the low current that third NMOS tube MN3 is persistently provided maintains high-voltage power pipe to be elevated；Second half of the cycle, control
Signal n2 and n4 processed gets higher level by low level, and the second NMOS tube MN2 and the 4th NMOS tube MN4 are simultaneously turned on, height of quickly releasing
The charge of the gate capacitance storage of power tube is pressed, the second NMOS tube MN2 is prior to the 4th NMOS after controlling the burst pulse of signal n2
Pipe MN4 close, the 4th NMOS tube MN4 persistently release high-voltage power pipe gate capacitance charge until the next period arrival.
The present embodiment without limitation, can control chip to the specific structure of above-mentioned logic unit for signal logic, can also
Think specific logical transition circuit.
In one embodiment, referring to Fig. 3, timesharing electrical control circuit can also include: provided for under-voltage latch module 100 it is default
The voltage transformation module 400 of voltage；The input terminal of voltage transformation module 400 be suitable for connect with external power supply, output end with it is described
The voltage end of under-voltage latch module 100 connects.In addition, under-voltage latch module 100 can also protect the upper of voltage transformation module 400
Electricity and power down, play the role of under-voltage protection to circuit.The present embodiment to the specific structure of voltage transformation module 400 without limitation,
It can be voltage stabilizing chip, or specific voltage conversion circuit.
In one embodiment, timesharing electrical control circuit can also include: the Postponement module 500 postponed to enable signal；
The input terminal of Postponement module 500 is suitable for connecting with the external enable signal source, the output end of Postponement module 500 and under-voltage latch
The enable end EN connection of module 100.The specific structure that the present embodiment turns Postponement module 500 to voltage can be to prolong without limitation
Slow chip, or specific delay circuit, such as the negative positive delay circuit of control.
In one embodiment, timesharing electrical control circuit can also include: level shift module 600；Level shift module 600
Input terminal is connect with the first output end OUT_H of the under-voltage latch module 100, the output end of the level shift module 600
It is connect with the input terminal IN of the timesharing drive module 200.The present embodiment does not limit the specific structure of level shift module 600
It is fixed, it can be level shift chip, or specific level shift circuit.
In above-described embodiment, timesharing electrical control circuit mainly includes under-voltage latch module 100, timesharing drive module 200 and puts
Fulgurite 300, structure is simple, at low cost, simplifies the volume of driver, and low in energy consumption and adaptability is good；Wherein, under-voltage latch module
Receive external drive signal source driving signal, according to the enable signal in external enable signal source export the first driving signal to divide
When drive module 200, export the second driving signal to discharge tube 300, timesharing drive module 200 is according to first driving signal
The charge or discharge of external high pressure power tube are controlled, in external high-voltage power tube discharge, discharge tube 300 is according to second driving
Signal releases to the voltage of the drain electrode of external high-voltage power pipe, so that the driving circuit of the present embodiment is meeting high-voltage power
While the cut-in voltage of pipe, traditional peripheral storage capacitor is cut, the complexity of high-voltage drive, reliability are reduced
It is high.
The present embodiment additionally provides a kind of high-voltage drive, including high-voltage power pipe and power amplifier, further includes above-mentioned
Embodiment provide described in any item timesharing electrical control circuits, it may have timesharing electrical control circuit described in any of the above-described kind it is beneficial
The first end of effect, such as Fig. 2, power amplifier is connect with the drain electrode of high-voltage power pipe, the second termination of the power amplifier
Ground.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each function
Can unit, module division progress for example, in practical application, can according to need and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of described device is divided into different functional unit or module, more than completing
The all or part of function of description.Each functional unit in embodiment, module can integrate in one processing unit, can also
To be that each unit physically exists alone, can also be integrated in one unit with two or more units, it is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.In addition, each function list
Member, the specific name of module are also only for convenience of distinguishing each other, the protection scope being not intended to limit this application.Above system
The specific work process of middle unit, module, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in detail or remembers in some embodiment
The part of load may refer to the associated description of other embodiments.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although referring to aforementioned reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution should all
Including within protection scope of the present invention.
Claims (10)
1. a kind of timesharing electrical control circuit characterized by comprising under-voltage latch module, timesharing drive module and discharge tube；
The input terminal of the under-voltage latch module is suitable for connecting with external drive signal source, and enable end is suitable for and external enable signal
Source connection, the first output end are connect with the input terminal of the timesharing drive module, and the first of second output terminal and the discharge tube
End connection；The output end of the timesharing drive module is suitable for connecting with the grid of external high pressure power tube；The of the discharge tube
Two ends are suitable for connecting with the drain electrode of external high pressure power tube；
The under-voltage latch module receives the driving signal of external drive signal source, according to the enable signal in external enable signal source
The first driving signal is exported to the timesharing drive module, exports the second driving signal to the discharge tube；The timesharing driving
Module controls the external high pressure power tube charge or discharge according to first driving signal；In external high-voltage power tube discharge
When, the discharge tube is released according to voltage of second driving signal to the drain electrode of external high-voltage power pipe.
2. timesharing electrical control circuit as described in claim 1, which is characterized in that the timesharing drive module include: logic unit,
First current source, the second current source, third current source, the 4th current source, first switching element, second switch element, third are opened
Close element and the 4th switch element；
The input terminal of the logic unit is connect with the first output end of the under-voltage latch module, and the first of the logic unit
Output end is connect with the signal end of the first switching element, the second output terminal of the logic unit and second switch member
The signal end of part connects, and the third output end of the logic unit is connect with the signal end of the third switch element, described to patrol
The 4th output end for collecting unit is connect with the signal end of the 4th switch element；
The first end of the first switching element is connect with the second end of first current source, and the of the first switching element
Two ends are all connected with the grid of the external high pressure power tube and the first end of second switch element；The second switch element
Second end is connect with the first end of second current source；
The first end of the third switch element is connect with the second end of the third current source, and the of the third switch element
Two ends are all connected with the grid of the external high pressure power tube and the first end of the 4th switch element；4th switch element
Second end is connect with the first end of the 4th current source；
The first end of first current source and the first end of the third current source are connect with external power supply, second electricity
The second end in stream source and the second end of the 4th current source are grounded.
3. timesharing electrical control circuit as claimed in claim 2, which is characterized in that the timesharing drive module further include: clamper；
The first end of the clamper is connect with the first end of the third current source, the second end of the clamper and described the
The second end of three switch elements connects.
4. timesharing electrical control circuit as described in claim 1, which is characterized in that the timesharing drive module further include: logic list
Member, the first NMOS tube, the second NMOS tube, third NMOS tube, the 4th NMOS tube, the first PMOS tube, the second PMOS tube, the first electricity
Resistance, second resistance, 3rd resistor, the 4th resistance, the 5th resistance and the 6th resistance；
The input terminal of the logic unit is connect with the first output end of the under-voltage latch module, and the first of the logic unit
Output end is connect with the grid of first NMOS tube, the grid of the second output terminal of the logic unit and second NMOS tube
Pole connection, the third output end of the logic unit are connect with the grid of the third NMOS tube, and the 4th of the logic unit the
Output end is connect with the grid of the 4th NMOS tube；
The source electrode of first NMOS tube is connect with the grid of the second end of the first resistor and first PMOS tube, described
The drain electrode of first NMOS tube is connect with the first end of the second resistance；The source electrode of second NMOS tube and the first PMOS
The drain electrode of pipe is connected with the grid of the external high pressure power tube, the drain electrode of second NMOS tube and the of the 3rd resistor
One end connection；The grid of the second end and second PMOS tube of the source electrode of the third NMOS tube and the 4th resistance connects
It connects, the drain electrode of the third NMOS tube is connect with the first end of the 5th resistance；The source electrode of 4th NMOS tube with it is described
The drain electrode of second PMOS tube is connected with the grid of the external high pressure power tube, the drain electrode and the described 6th of the 4th NMOS tube
The first end of resistance connects；
The first end of the first resistor, the source electrode of the first PMOS tube, the first end of the 4th resistance and the second PMOS tube source electrode
It is connect with external power supply；The second end of the second resistance, the second end of the 3rd resistor, the 5th resistance second
The second end of end and the 6th resistance is grounded.
5. timesharing electrical control circuit as claimed in claim 4, which is characterized in that the timesharing drive module further include: the one or two
Pole pipe and the second diode；
The anode of the first diode is connect with the grid of the external high pressure power tube, the cathode of the first diode with
The anode of second diode connects, and the cathode of the second diode is connect with external power supply.
6. such as timesharing electrical control circuit described in any one of claim 1 to 5, which is characterized in that the timesharing electrical control circuit also wraps
It includes: providing the voltage transformation module of predeterminated voltage for the under-voltage latch module；
The input terminal of the voltage transformation module is suitable for connecting with external power supply, the voltage of output end and the under-voltage latch module
End connection.
7. such as timesharing electrical control circuit described in any one of claim 1 to 5, which is characterized in that the timesharing electrical control circuit also wraps
It includes: the Postponement module that the enable signal is postponed；
The input terminal of the Postponement module is suitable for connecting with the external enable signal source, the output end of the Postponement module and institute
State the enable end connection of under-voltage latch module.
8. such as timesharing electrical control circuit described in any one of claim 1 to 5, which is characterized in that the timesharing electrical control circuit also wraps
It includes: level shift module；
The input terminal of the level shift module is connect with the first output end of the under-voltage latch module, the level shift mould
The output end of block is connect with the input terminal of the timesharing drive module.
9. such as timesharing electrical control circuit described in any one of claim 1 to 5, which is characterized in that the discharge tube is NMOS tube.
10. a kind of high-voltage drive, including high-voltage power pipe and power amplifier, which is characterized in that further include such as claim 1
To 9 described in any item timesharing electrical control circuits；
Wherein, the first end of the power amplifier is connect with the drain electrode of the high-voltage power pipe, and the of the power amplifier
Two ends ground connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910809052.6A CN110401334A (en) | 2019-08-29 | 2019-08-29 | Timesharing electrical control circuit and high-voltage drive |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910809052.6A CN110401334A (en) | 2019-08-29 | 2019-08-29 | Timesharing electrical control circuit and high-voltage drive |
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| CN110401334A true CN110401334A (en) | 2019-11-01 |
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ID=68329455
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910809052.6A Pending CN110401334A (en) | 2019-08-29 | 2019-08-29 | Timesharing electrical control circuit and high-voltage drive |
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| CN112968611A (en) * | 2021-03-22 | 2021-06-15 | 矽力杰半导体技术(杭州)有限公司 | Control circuit and switching power supply using same |
| CN115603587A (en) * | 2022-10-27 | 2023-01-13 | 北京智芯微电子科技有限公司（Cn） | Low EMI converter circuit, electronic device, chip and power transmission system |
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