CN208707312U - A kind of single-fire-wire electronic switch circuit - Google Patents
A kind of single-fire-wire electronic switch circuit Download PDFInfo
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- CN208707312U CN208707312U CN201821290755.XU CN201821290755U CN208707312U CN 208707312 U CN208707312 U CN 208707312U CN 201821290755 U CN201821290755 U CN 201821290755U CN 208707312 U CN208707312 U CN 208707312U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model relates to a kind of single-fire-wire electronic switch circuits, including relay, power-supplying circuit, switch pipe unit, driving and control unit, wherein: relay uses magnetic latching relay, power-supplying circuit is made of micro energy lose Width funtion power module circuitry and power switch circuit, switch pipe unit is added EMI filter circuit on the basis of switching tube, and driving and control unit are using the chip module circuit of low-power consumption come driving switch pipe and relay.It realizes a kind of suitable for high or low power load, the single-fire-wire electronic switch that can be authenticated by electromagnetic compatibility conduction, the high currents home control network communication protocols such as Zigbbee can be used.
Description
Technical field
The utility model relates to electronic switching circuit more particularly to a kind of single-fire-wire electronic switch circuits, belong to intelligent family
Occupy field.
Background technique
Currently, single-fire-wire electronic switch in the market can not generally be suitable for any bear as zero firewire switch completely
It carries, existing single-fire-wire electronic switch circuit mostly uses greatly silicon-controlled and common relay to drive as driving element negative in the market
Work is carried, following features are respectively provided with:
1. silicon-controlled mode: being loaded using silicon-controlled as electronic switch to switch on and off, be current single live-wire electronic
Most commonly used mode is switched, its advantage is that: the electronic switch service life is long, and drive control circuit is simple, manufacturing cost
It is lower, it can control all kinds of loadtypes (resistive, capacitive, perception etc.), the disadvantage is that: due to silicon-controlled required heat dissipation problem
Its load-carrying power is set to be restricted (generally 200W or less), additionally due to silicon-controlled needs are frequently opened in non-zero passage
Pass loads and generating biggish harmonic wave causes to cross certification more difficulty in terms of electromagnetic compatibility；
2. relay mode: load is switched on and off using the mechanical contact of relay, be suitable for large-power lamp or
Electric appliance, high-power single-fire-wire electronic switch in the market generally use ordinary electromagnetic relay, its advantage is that: opposite magnetic keep after
Cost is relatively low for electric appliance, the disadvantage is that: since its actuation coil driving current is larger, even if can be simultaneous after being optimized by some low-power consumption
Most lamps and lanterns are sought, but still can not accomplish that lamps and lanterns, which taken over, as switching zero firewire does not flash, and still has extremely a
There is turn off the light flashing (the efficient miniwatt energy-saving lamps or LED light of such as some extreme small current drivings), nothing in other special lamps and lanterns
Method meets the needs of the middle and high end intelligent switch to aspire after perfection.
In addition, single-fire-wire electronic switch product power supply circuit construction now on the market is complicated, low efficiency gives back-end circuit
Electricity shortage, exist perfect cannot reliably connect Zigbee(with networking flexibility, communication is reliable, high safety, favorable expandability,
Without advantages such as wirings) (power consumption of the Zigbee module in transmitting and reception itself commonly reaches 20 to 40 milliamperes to wireless module
Between) the problem of.
Summary of the invention
The technical problem to be solved by the present invention is in view of the above drawbacks of the prior art, provide one kind and be suitable for
High or low power load, the single firewire that can be authenticated by electromagnetic compatibility conduction, the high currents home control network communication protocols such as Zigbbee can be used
Electronic switch.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of single firewire switching circuit is constructed, it is main
It include: relay K1-K3, power-supplying circuit 2, switch pipe unit 8, driving and control unit 5；
Using micro energy lose Width funtion power module power, have it is low in energy consumption, it is high-efficient, small, input voltage range is lost
The features such as wide；
Using magnetic latching relay as driving element, the load closing or opening is controlled, coil is not after switching action
It needs to continue to be powered again, greatly reduces system power dissipation.
Further technical solution is: EMI filter circuit, which is added, can carry out conduction certification, for filtering off electronic switch
The harmonic wave of generation avoids generating harassing and wrecking to AC network, meets EMC Requirements, and EMI filter circuit includes the first inductance
L1 and first capacitor C1, the first inductance L1 are connected on the sub- L of hot terminal, outer of the single-fire-wire electronic switch circuit 1
Portion's AC alternating current inputs the source S of the firewire LINE and switching tube Q1, system dc power supply publicly between GND, and described first
One end of capacitor C1 is connect with the first inductance L1, the drain electrode of the other end of the first capacitor C1 and the switching tube Q1
D connection；
It adapts to global network voltage compared with prior art, the utility model has the beneficial effects that providing one kind, expire
All kinds of bearing powers (miniwatt energy-saving lamp and LED light, high-power electric appliance etc.) of foot and loadtype (including resistive, capacitive, perception
Load, such as incandescent lamp, fluorescent lamp, energy-saving lamp, LED light, fluorescent lamp), without additionally installing any resistance or capacitor etc., " disappear sudden strain of a muscle
Module " can be authenticated, reliable and stable single-fire-wire electronic switch circuit by electromagnetic compatibility conduction, and the electronic switching circuit is maximum
The output electric current for simplifying circuit structure, improving power-supply circuit and voltage range and efficiency of degree reduce circuit power consumption,
Load dark current is reduced, current more advanced smart home wireless communication technique (such as Zigbee, bluetooth, Z- have been adapted to
The wireless control technologies such as Wave).
Detailed description of the invention
Attached drawing 1 is a kind of functional block diagram of single-fire-wire electronic switch circuit of the utility model.
Attached drawing 2 is a kind of AC/DC power-switching circuit schematic diagram of single-fire-wire electronic switch circuit of the utility model.
Attached drawing 3 is the functional block diagram of another single-fire-wire electronic switch circuit of the utility model.
Attached drawing 4 is the AC/DC power-switching circuit schematic diagram of another single-fire-wire electronic switch circuit of the utility model.
Attached drawing 5 is driving and the control unit functional block diagram of the utility model single-fire-wire electronic switch circuit.
Attached drawing 6 is the schematic diagram of the reset circuit embodiment 1 of the utility model single-fire-wire electronic switch circuit.
Attached drawing 7 is the schematic diagram of the reset circuit embodiment 2 of the utility model single-fire-wire electronic switch circuit.
Attached drawing 8 is 1 schematic diagram of DC/DC circuit implementation of the utility model single-fire-wire electronic switch circuit.
Attached drawing 9 is 2 schematic diagram of DC/DC circuit implementation of the utility model single-fire-wire electronic switch circuit.
Attached drawing 10 is a kind of power switch circuit functional block diagram of single-fire-wire electronic switch circuit of the utility model.
Specific embodiment
For the ease of the understanding of those skilled in the art, the utility model is made further below with reference to attached drawing is implemented
Bright, the content that embodiment refers to not is the restriction to the utility model.
The utility model single-fire-wire electronic switch circuit specific embodiment 1:
As shown in Figure 1, single-fire-wire electronic switch circuit 1 by partially forming as follows: relay K1-K3, power-supplying circuit
2, switch pipe unit 8, driving and control unit 5；Its basic scheme is:
The relay K1-K3 is magnetic latching relay, including twin coil magnetic latching relay or unicoil magnetic keep after
Electric appliance；
Further, the model of the relay includes but is not limited to: ADW1103HLW, ADW1203HLW etc.；
First load wiring terminal LOAD1 of the list firewire switching circuit 1 is inputted by the first load 13 with AC alternating current
Zero curve N connection, the second load wiring terminal LOAD2 are connect by the second load 14 with AC alternating current input zero curve N；Third load connects
Line terminals LOAD3 is connect by third load 15 with AC alternating current input zero curve N；
First load wiring terminal LOAD1 of the single-fire-wire electronic switch circuit 1 is normal with the first relay K1 simultaneously
The connection of contact one end is opened, the second load wiring terminal LOAD2 is connect with normally opened contact one end of the second relay K2 simultaneously, third
Load wiring terminal LOAD3 is connect with normally opened contact one end of third relay K3 simultaneously；
The normally opened contact other end of the first relay K1 is connect with the drain D of switching tube Q1；Second relay
The sub- L of hot terminal and the external AC city of K2, the normally opened contact other end of third relay K3 and single firewire switching circuit 1
Electricity input firewire LINE connection.
Power-supplying circuit 2:
The power-supplying circuit 2 includes AC/DC power-switching circuit 3 and power switch circuit 4；Power-supplying circuit 2
Input terminal connect with the first via load wiring terminal LOAD1 of single firewire switching circuit 1；AC/DC power-switching circuit 3 exports
Power positive end (PWR) is connect with the input terminal of the power switch circuit 4,4 output end of power switch circuit and system
The grounding leg and system dc power supply of the VDD connection of power supply positive terminal, AC/DC power-switching circuit 3 and power switch circuit 4
Publicly GND connection.
AC/DC power-switching circuit 3:
The AC/DC power-switching circuit 3 as shown in Fig. 2, include micro energy lose Width funtion power module U3, diode D3,
Resistance R3 and filter capacitor C2, C4, the model of the micro energy lose Width funtion power module U3 includes but is not limited to: PI-XD108,
The anode of PI-3V3-B4, PI-05V-B4 etc., the diode D3 are connected with the first load wiring terminal LOAD1, and described two
The cathode of pole pipe D3 is connect through resistance R3 with the input terminal of the micro energy lose Width funtion power module U3, the wide electricity of micro energy lose
The output end of piezoelectricity source module U3 is connect with the input terminal of the power switch circuit 4, the micro energy lose Width funtion power module
The input terminal and output end of U3 is connect with one end of filter capacitor C2, C4 respectively, the micro energy lose Width funtion power module U3
Feedback pin FB and internal reference voltage pin connect respectively with first resistor both ends, the micro energy lose Width funtion power supply mould
The power ground pin of block U3, two filter capacitors C2, C4 the other end publicly GND is connect with system dc power supply.
Power switch circuit 4:
The power switch circuit 4 is as shown in Figure 10, including reset circuit and DC/DC circuit, the reset circuit include
Voltage detector resets IC, and the DC/DC circuit includes voltage-dropping type DC/DC controller or synchronous buck converter or drop
Die mould DC/DC converter；
The input pin of the power pins of the reset circuit and the DC/DC circuit and AC/DC power-switching circuit 3
The PWR connection of out-put supply positive terminal, the grounding pin and system of the grounding pin of the reset circuit and the DC/DC circuit
DC power supply publicly GND connection, the output pin of the reset circuit are connect with the enable end EN of the DC/DC circuit,
The output pin of the DC/DC circuit is connect with system power supply power supply positive terminal VDD.
Reset circuit 9:
The reset circuit 9 includes that main control chip and peripheral cell form, and the main control chip of the reset circuit 9 includes electricity
It presses detector or resets IC, concrete model includes but is not limited to: ME2808A50M3G or IMP809 or UM809 or BL8506
Deng,
Specific embodiment has:
9 embodiment 1 of reset circuit: as shown in fig. 6, the end VCC of the main control chip U4 of the reset circuit 9 and AC/DC
3 out-put supply positive terminal PWR connection of power-switching circuit, the end RESET of the main control chip U4 of the reset circuit 9 and DC/DC
The enable end EN connection of circuit 10；An electricity is connected between the end VCC and the end RESET of the main control chip U4 of the reset circuit 9
R7 is hindered, a capacitor C6 is connected between the end RESET and power ground of the VCC of the main control chip U4 of the reset circuit 9, it is described multiple
Publicly GND is connect the power ground of the main control chip U4 of position circuit 9 with system dc power supply.
9 embodiment party of reset circuit: 2: as shown in fig. 7, the end VCC of the main control chip U4 of the reset circuit 9 passes through one
It is connect after zener diode Z1 decompression with 3 out-put supply positive terminal PWR of AC/DC power-switching circuit；The master of the reset circuit 9
The end RESET of control chip U4 is connect by a diode D7 with the enabled end EN of DC/DC circuit 10, the cathode of the diode
It is connect with the end RESET, the anode of the diode is connect by a capacitor C6 again after connecting with the enable end EN of DC/DC circuit 10
To system dc power supply publicly GND, the both ends of the diode D7 one resistance R7 of parallel connection simultaneously, the reset circuit 9
Publicly GND is connect the power ground of main control chip U4 with system dc power supply.
DC/DC circuit 10:
The DC/DC circuit 10 includes that main control chip and peripheral cell form,
The main control chip includes that voltage-dropping type DC/DC controller or synchronous buck converter or voltage-dropping type DC/DC turn
Parallel operation, concrete model include but is not limited to: S-8521D33MC or TPS62120DCNR.
Specific embodiment has:
10 embodiment 1 of DC/DC circuit: as shown in figure 8, the model of the main control chip U5 of the DC/DC circuit 10 includes
But it is not limited to S-8521D33MC, the input terminal VIN and AC/DC power-switching circuit of the main control chip U5 of the DC/DC circuit 10
3 out-put supply positive terminal PWR connections, the end ON/OFF of the main control chip U5 of the DC/DC circuit 10 and above-mentioned reset circuit 9
The end EXT of enable end EN connection, the main control chip U5 of the DC/DC circuit 10 is connect with the grid G of third metal-oxide-semiconductor Q3, described
The source S of third metal-oxide-semiconductor Q3 is connect with 3 out-put supply positive terminal PWR of AC/DC power-switching circuit, the third metal-oxide-semiconductor Q3's
Drain D is connect with one end of the cathode of the 6th diode D6 and the second inductance L2, the other end of the second inductance L2, described
The output end VOUT of the main control chip U5 of DC/DC circuit 10, one end of the 9th capacitor C9 and system power supply power supply positive terminal VDD connect
Connect, the anode of the 6th diode D6, the other end of the 9th capacitor C9, the DC/DC circuit 10 main control chip U5 ground terminal
Publicly GND is connect with system dc power supply.
10 embodiment 2 of DC/DC circuit: as shown in figure 9, the model of the main control chip U5 of the DC/DC circuit 10 includes
But it is not limited to TPS62120DCNR, the input terminal IN and AC/DC power-switching circuit of the main control chip U5 of the DC/DC circuit 10
3 out-put supply positive terminal PWR connections, the end EN of the main control chip U5 of the DC/DC circuit 10 and above-mentioned reset circuit 9 enable
EN connection is held, the end SW of the main control chip U5 of the DC/DC circuit 10 is connect with one end of the second inductance L2, second inductance
The other end of L2, one end of the tenth resistance R10, the DC/DC circuit 10 main control chip U5 output end VOUT, the 9th capacitor
One end of C9 is connect with system power supply power supply positive terminal VDD, the other end of the tenth resistance R10, one end of the 9th resistance R9 and institute
State the feedback end FB connection of the main control chip U5 of DC/DC circuit 10, the other end of the 9th capacitor C9, the 9th resistance R9 it is another
One end, the DC/DC circuit 10 the ground terminal of main control chip U5 publicly GND is connect with system dc power supply.
Switching tube element circuit 8:
The switch pipe unit 8 includes switch tube assembly 7；
The switch tube assembly 7 includes switching tube Q1, or the electricity composed in parallel by switching tube Q1 and external diode D2
Road, the diode D2 be low voltage difference power schottky rectifier or Schottky diode, the anode of the diode D2 with
The source S of switching tube Q1 connects, and the cathode of the diode D2 is connect with the drain D of switching tube Q1；
The switching tube Q1 is field-effect tube MOSFET, the fire of the source S of the switching tube Q1, single firewire switching circuit 1
Line connecting terminal L, publicly GND is connect external AC alternating current input firewire LINE with system dc power supply；The switching tube Q1's
Drain D is connect with the normally opened contact other end of the first relay K1；
Further, the diode D2 model includes but is not limited to: STPS15L30C, FERD40U45C；
Further, the model of the switching tube Q1 includes but is not limited to: IRLR8743PbF, IRLR8743PbF.
EMI filter circuit 6:
Further technical solution is: EMI filter circuit, which is added, can carry out conduction certification, for filtering off electronic switch
The harmonic wave of generation avoids generating harassing and wrecking to AC network, meets EMC Requirements, and EMI filter circuit includes the first inductance
L1 and first capacitor C1, the first inductance L1 are connected on the sub- L of hot terminal, outer of the single-fire-wire electronic switch circuit 1
Portion's AC alternating current inputs the source S of the firewire LINE and switching tube Q1, system dc power supply publicly between GND, and described first
One end of capacitor C1 is connect with the first inductance L1, the drain electrode of the other end of the first capacitor C1 and the switching tube Q1
D connection；
In order to ensure single-fire-wire electronic switch can cross conduction certification so need that above-mentioned EMI filter circuit is added, wherein
Filter inductance L1 and filter capacitor C1 the two elements need based on the actual application requirements to select, and following principle is output power
Bigger, L3 inductance just needs more greatly,
Generally when load output power is in 2000W, then L1=470uH, C1=220nF；
L1=220uH, C1=220nF can be used when load output power is in 1000W；
In addition C1 is generally required with X1 and X2 safety capacitor, L1 Sendust Cores；
If single-fire-wire electronic switch did not needed conduction certification, then C1 is not installed, L1 direct short-circuit.
Driving and control unit 5:
As shown in Fig. 5: the driving and control unit 5 include driving unit 12 and control unit 11；
The control grid of field-effect tube control the pin FET_Ctrl and the switching tube Q1 of the driving and control unit 5
G is connected, for the conducting and cut-off of driving switch pipe Q1；
It is described driving and control unit 5 exchange input pin AC1_COM and the switching tube Q1 drain D and first after
One end of the normally opened contact of electric appliance K1 connects；
It is described driving and control unit 5 the positive and negative end pin of three group relay coil power supplies respectively with each relay Kl,
K2, K3 driving coil both ends COIL01_2, COIL01_1, COIL02_2, COIL02_1, COIL03_2, COIL03_1 connection, point
The contact on-off of each relay Kl, K2, K3 are not controlled；
The power supply output pin and 3 out-put supply positive terminal of AC/DC power-switching circuit of the driving and control unit 5
PWR connection, power input pin are connect with system power supply power supply positive terminal VDD.
Driving unit 12:
The driving unit 12 includes the second chip module U2, and the model of the chip module U2 includes but is not limited to XD-
Positive/negative end pin K1+, K1-, K2+, K2-, K3+, K3- of three group relay coil power supplies of KC05, the second chip module U2
It is connected respectively with each relay Kl-K3 driving coil both ends, controls the contact on-off of each relay Kl-K3 respectively；
The power supply power supply pin VCC connection third capacitor C3 of the second chip module U2 to system dc power supply publicly
GND is filtered, while the power output end PWR of AC/DC power-switching circuit is connected to by first diode forward direction, described
The relay driving energization pins VCC1 of second chip module U2 is connected by second resistance R2 and system power supply power supply positive terminal VDD
It connects；
12 field-effect tube of the driving unit control pin FET_Ctrl is connect with the control grid G of switching tube Q1.
Control unit 11:
Described control unit 11 includes the control circuit or module formed using chip or discrete component, and output control is drawn
Foot controls input pin K1_CTRL-, K1_CTRL+, K2_CTRL-, K2_ with three group relays of the second chip module U2 respectively
CTRL+, K3_CTRL-, K3_CTRL+ are connected, for realizing the drive control to each relay.
The utility model single-fire-wire electronic switch circuit specific embodiment 2:
As shown in figure 3, single-fire-wire electronic switch circuit 1 by partially forming as follows: relay K1-K3, power-supplying circuit
2, switch pipe unit 8, driving and control unit 5；Its basic scheme is:
The relay K1-K3 is magnetic latching relay, including twin coil magnetic latching relay or unicoil magnetic keep after
Electric appliance；
Further, the model of the relay includes but is not limited to: ADW1103HLW, ADW1203HLW etc.；
First load wiring terminal LOAD1 of the list firewire switching circuit 1 is inputted by the first load 13 with AC alternating current
Zero curve N connection, the second load wiring terminal LOAD2 are connect by the second load 14 with AC alternating current input zero curve N；Third load connects
Line terminals LOAD3 is connect by third load 15 with AC alternating current input zero curve N；
First load wiring terminal LOAD1 of the single-fire-wire electronic switch circuit 1 is normal with the first relay K1 simultaneously
The connection of contact one end is opened, the second load wiring terminal LOAD2 is connect with normally opened contact one end of the second relay K2 simultaneously, third
Load wiring terminal LOAD3 is connect with normally opened contact one end of third relay K3 simultaneously；
All the normally opened contact other end of the relay K1-K3 is connect with the drain D of switching tube Q1.
Power-supplying circuit 2:
The power-supplying circuit 2 includes AC/DC power-switching circuit 3 and power switch circuit 4；Power-supplying circuit 2
Three input terminals connect respectively with three tunnel load wiring terminal LOAD1-LOAD3 of single-fire-wire electronic switch circuit 1)；AC/DC
3 out-put supply positive terminal PWR of power-switching circuit is connect with the input terminal of the power switch circuit 4, the power switch electricity
4 output end of road is connect with system power supply power supply positive terminal VDD, the ground connection of AC/DC power-switching circuit 3 and power switch circuit 4
Publicly GND is connect foot with system dc power supply.
AC/DC power-switching circuit 3:
The AC/DC power-switching circuit 3 is as shown in figure 3, include micro energy lose Width funtion power module U3, diode D3-
D5, resistance R3 and filter capacitor C2, C4, the model of the micro energy lose Width funtion power module U3 includes but is not limited to PI-
The anode of XD108, the diode D3-D5 are connected with each load wiring terminal LOAD1-LOAD3 respectively, the diode
The cathode of D3-D5 is connect through 3rd resistor R3 with the input terminal of the micro energy lose Width funtion power module U3, and the micro energy lose is wide
The output end of voltage source module U3 is connect with the input terminal of the power switch circuit 4, the micro energy lose Width funtion power supply mould
The input terminal and output end of block U3 is connect with one end of two filter capacitors C2, C4 respectively；The micro energy lose Width funtion power supply
The feedback pin FB and internal reference voltage pin of module U3 is connect with first resistor respectively, the micro energy lose Width funtion power supply
The power ground pin of module U3, two filter capacitors C2, C4 the other end publicly GND is connect with system dc power supply.
Power switch circuit 4:
The power switch circuit 4 is as shown in Figure 10, including reset circuit and DC/DC circuit, the reset circuit include
Voltage detector resets IC, and the DC/DC circuit includes voltage-dropping type DC/DC controller or synchronous buck converter or drop
Die mould DC/DC converter；
The input pin of the power pins of the reset circuit and the DC/DC circuit and AC/DC power-switching circuit 3
The PWR connection of out-put supply positive terminal, the grounding pin and system of the grounding pin of the reset circuit and the DC/DC circuit
DC power supply publicly GND connection, the output pin of the reset circuit are connect with the enable end EN of the DC/DC circuit,
The output pin of the DC/DC circuit is connect with system power supply power supply positive terminal VDD.
Reset circuit 9:
The reset circuit 9 includes that main control chip and peripheral cell form, and the main control chip of the reset circuit 9 includes electricity
It presses detector or resets IC, concrete model includes but is not limited to: ME2808A50M3G or IMP809 or UM809 or BL8506
Deng,
Specific embodiment has:
9 embodiment 1 of reset circuit: as shown in fig. 6, the end VCC of the main control chip U4 of the reset circuit 9 and AC/DC
3 out-put supply positive terminal PWR connection of power-switching circuit, the end RESET of the main control chip U4 of the reset circuit 9 and DC/DC
The enable end EN connection of circuit 10；An electricity is connected between the end VCC and the end RESET of the main control chip U4 of the reset circuit 9
R7 is hindered, a capacitor C6 is connected between the end RESET and power ground of the VCC of the main control chip U4 of the reset circuit 9, it is described multiple
Publicly GND is connect the power ground of the main control chip U4 of position circuit 9 with system dc power supply.
9 embodiment party of reset circuit: 2: as shown in fig. 7, the end VCC of the main control chip U4 of the reset circuit 9 passes through one
It is connect after zener diode Z1 decompression with 3 out-put supply positive terminal PWR of AC/DC power-switching circuit；The master of the reset circuit 9
The end RESET of control chip U4 is connect by a diode D7 with the enabled end EN of DC/DC circuit 10, the cathode of the diode
It is connect with the end RESET, the anode of the diode is connect by a capacitor C6 again after connecting with the enable end EN of DC/DC circuit 10
To system dc power supply publicly GND, the both ends of the diode D7 one resistance R7 of parallel connection simultaneously, the reset circuit 9
Publicly GND is connect the power ground of main control chip U4 with system dc power supply.
DC/DC circuit 10:
The DC/DC circuit 10 includes that main control chip and peripheral cell form,
The main control chip includes that voltage-dropping type DC/DC controller or synchronous buck converter or voltage-dropping type DC/DC turn
Parallel operation, concrete model include but is not limited to: S-8521D33MC or TPS62120DCNR.
Specific embodiment has:
10 embodiment 1 of DC/DC circuit: as shown in figure 8, the model of the main control chip U5 of the DC/DC circuit 10 includes
But it is not limited to S-8521D33MC, the input terminal VIN and AC/DC power-switching circuit of the main control chip U5 of the DC/DC circuit 10
3 out-put supply positive terminal PWR connections, the end ON/OFF of the main control chip U5 of the DC/DC circuit 10 and above-mentioned reset circuit 9
The end EXT of enable end EN connection, the main control chip U5 of the DC/DC circuit 10 is connect with the grid G of third metal-oxide-semiconductor Q3, described
The source S of third metal-oxide-semiconductor Q3 is connect with 3 out-put supply positive terminal PWR of AC/DC power-switching circuit, the third metal-oxide-semiconductor Q3's
Drain D is connect with one end of the cathode of the 6th diode D6 and the second inductance L2, the other end of the second inductance L2, described
The output end VOUT of the main control chip U5 of DC/DC circuit 10, one end of the 9th capacitor C9 and system power supply power supply positive terminal VDD connect
Connect, the anode of the 6th diode D6, the other end of the 9th capacitor C9, the DC/DC circuit 10 main control chip U5 ground terminal
Publicly GND is connect with system dc power supply.
10 embodiment 2 of DC/DC circuit: as shown in figure 9, the model of the main control chip U5 of the DC/DC circuit 10 includes
But it is not limited to TPS62120DCNR, the input terminal IN and AC/DC power-switching circuit of the main control chip U5 of the DC/DC circuit 10
3 out-put supply positive terminal PWR connections, the end EN of the main control chip U5 of the DC/DC circuit 10 and above-mentioned reset circuit 9 enable
EN connection is held, the end SW of the main control chip U5 of the DC/DC circuit 10 is connect with one end of the second inductance L2, second inductance
The other end of L2, one end of the tenth resistance R10, the DC/DC circuit 10 main control chip U5 output end VOUT, the 9th capacitor
One end of C9 is connect with system power supply power supply positive terminal VDD, the other end of the tenth resistance R10, one end of the 9th resistance R9 and institute
State the feedback end FB connection of the main control chip U5 of DC/DC circuit 10, the other end of the 9th capacitor C9, the 9th resistance R9 it is another
One end, the DC/DC circuit 10 the ground terminal of main control chip U5 publicly GND is connect with system dc power supply.
Switching tube element circuit 8:
The switch pipe unit 8 includes switch tube assembly 7；
The switch tube assembly 7 includes switching tube Q1, or the electricity composed in parallel by switching tube Q1 and external diode D2
Road, the diode D2 be low voltage difference power schottky rectifier or Schottky diode, the anode of the diode D2 with
The source S of switching tube Q1 connects, and the cathode of the diode D2 is connect with the drain D of switching tube Q1；
The switching tube Q1 is field-effect tube MOSFET, and the switching tube Q1 is field-effect tube MOSFET, the switching tube
The source S of Q1, the sub- L of hot terminal of single firewire switching circuit 1, external AC alternating current input firewire LINE and system dc power supply
Publicly GND connection；The drain D of the switching tube Q1 is connect with the normally opened contact other end of whole relay K1-K3.
Further, the diode D2 model includes but is not limited to: STPS15L30C, FERD40U45C；
Further, the model of the switching tube Q1 includes but is not limited to: IRLR8743PbF, IRLR8743PbF.
EMI filter circuit 6:
Further technical solution is: EMI filter circuit, which is added, can carry out conduction certification, for filtering off electronic switch
The harmonic wave of generation avoids generating harassing and wrecking to AC network, meets EMC Requirements, and EMI filter circuit includes the first inductance
L1 and first capacitor C1, the first inductance L1 are connected on the sub- L of hot terminal, outer of the single-fire-wire electronic switch circuit 1
Portion's AC alternating current inputs the source S of the firewire LINE and switching tube Q1, system dc power supply publicly between GND, and described first
One end of capacitor C1 is connect with the first inductance L1, the drain electrode of the other end of the first capacitor C1 and the switching tube Q1
D connection；
In order to ensure single-fire-wire electronic switch can cross conduction certification so need that above-mentioned EMI filter circuit is added, wherein
Filter inductance L1 and filter capacitor C1 the two elements need based on the actual application requirements to select, and following principle is output power
Bigger, L3 inductance just needs more greatly,
Generally when load output power is in 2000W, then L1=470uH, C1=220nF；
L1=220uH, C1=220nF can be used when load output power is in 1000W；
In addition C1 is generally required with X1 and X2 safety capacitor, L1 Sendust Cores；
If single-fire-wire electronic switch did not needed conduction certification, then C1 is not installed, L1 direct short-circuit.
Driving and control unit 5:
As shown in Fig. 5: the driving and control unit 5 include driving unit 12 and control unit 11；
The control grid of field-effect tube control the pin FET_CTRL and the switching tube Q1 of the driving and control unit 5
G is connected, for the conducting and cut-off of driving switch pipe Q1；
It is described driving and control unit 5 exchange input pin AC1_COM and the switching tube Q1 drain D and first after
One end of the normally opened contact of electric appliance K1 connects；
It is described driving and control unit 5 the positive and negative end pin of three group relay coil power supplies respectively with each relay Kl,
K2, K3 driving coil both ends COIL01_2, COIL01_1, COIL02_2, COIL02_1, COIL03_2, COIL03_1 connection, point
The contact on-off of each relay Kl, K2, K3 are not controlled；
The power supply output pin and 3 out-put supply positive terminal of AC/DC power-switching circuit of the driving and control unit 5
PWR connection, power input pin are connect with system power supply power supply positive terminal VDD.
Driving unit 12:
The driving unit 12 includes the second chip module U2, and the model of the second chip module U2 includes but is not limited to
The positive/negative end pin K1+, K1- of three group relay coil power supplies of XD-KC05, the second chip module U2, K2+, K2-, K3+,
K3- is connect with each relay Kl-K3 driving coil both ends respectively, controls the contact on-off of each relay Kl-K3 respectively；
The power supply power supply pin VCC external connection third capacitor C3 of the second chip module U2 is public to system dc power supply
GND is filtered altogether, while the power output end PWR of AC/DC power-switching circuit is connected to by first diode forward direction,
The relay driving energization pins VCC1 of the second chip module U2 passes through second resistance R2 and system power supply power supply positive terminal
VDD is connected；
12 field-effect tube of the driving unit control pin FET_CTRL is connect with the control grid G of switching tube Q1.
Control unit 11:
Described control unit 11 includes the control circuit or module formed using chip or discrete component, and output control is drawn
Foot controls input pin K1_CTRL-, K1_CTRL+, K2_CTRL-, K2_ with three group relays of the second chip module U2 respectively
CTRL+, K3_CTRL-, K3_CTRL+ connection, for realizing the drive control to each relay.
The above is only the preferable specific embodiment of the utility model, not makees any form to the utility model
On limitation be not intended to limit the utility model although the utility model has been disclosed with preferred embodiment as above, it is any
Those skilled in the art are not departing within the scope of technical solutions of the utility model, when the technology using the disclosure above
Content makes a little change or is modified to the equivalent embodiment of equivalent variations, but all without departing from technical solutions of the utility model
Content, it is to the above embodiments any according to the technical essence of the utility model (technical solution and its utility model design)
Simple modification, equivalent change and modification is still within the scope of the technical solutions of the present invention.
Claims (10)
1. a kind of single-fire-wire electronic switch circuit (1), it is characterised in that: including relay (K1, K2, K3), power-supplying circuit
(2), pipe unit (8), driving and control unit (5) are switched；
The load wiring terminal (LOAD1, LOAD2, LOAD3) of the single-fire-wire electronic switch circuit (1) is respectively by external negative
(13,14,15) are carried to connect with AC alternating current input zero curve (N)；
The load wiring terminal (LOAD1, LOAD2, LOAD3) of the single-fire-wire electronic switch circuit (1) simultaneously respectively with pair
Normally opened contact one end of relay (K1, K2, K3) is answered to connect；The normally opened contact other end and switching tube list of first relay (K1)
Drain electrode (D) connection of switching tube (Q1) in first (8)；The normally opened contact other end and the list of second and third relay (K2, K3)
The hot terminal of fire-wire electronic switch circuit (1) sub (L) and external AC alternating current input firewire (LINE) connection；
The power-supplying circuit (2) includes AC/DC power-switching circuit (3) and power switch circuit (4)；The power supply power supply
The input terminal of circuit (2) is connect with the first via load wiring terminal (LOAD1) of single-fire-wire electronic switch circuit (1), AC/DC electricity
Power-switching circuit (3) out-put supply positive terminal (PWR) is connect with the input terminal of the power switch circuit (4), and the power supply is opened
Powered-down road (4) output end is connect with system power supply power supply positive terminal (VDD), AC/DC power-switching circuit (3) and power switch electricity
The grounding leg on road (4) publicly (GND) is connect with system dc power supply；
The switch pipe unit (8) includes switch tube assembly (7)；
The switch tube assembly (7) includes switching tube (Q1), or is composed in parallel by switching tube (Q1) and external diode (D2)
Circuit, the diode (D2) be low voltage difference power schottky rectifier or Schottky diode；
The switching tube (Q1) is field-effect tube MOSFET；
Hot terminal (L), external AC of the source electrode (S) of the switching tube (Q1), the single-fire-wire electronic switch circuit (1)
Alternating current input firewire (LINE) publicly (GND) is connect with system dc power supply；The drain electrode (D) of the switching tube (Q1) with it is described
The normally opened contact other end of first relay (K1) connects；
The driving and control unit (5) include driving unit (12) and control unit (11)；
The control gate of field-effect tube control pin (FET_CTRL) and the switching tube (Q1) of the driving and control unit (5)
(G) is connected for pole, is used to the conducting and cut-off of driving switch pipe (Q1)；
The drain electrode (D) and the of the exchange input pin (AC1_COM) and the switching tube (Q1) of the driving and control unit (5)
The normally opened contact other end of one relay (K1) connects；
It is described driving and control unit (5) the positive and negative end pin of three group relay coil power supplies respectively with each relay (Kl,
K2, K3) driving coil both ends (COIL01_2, COIL01_1, COIL02_2, COIL02_1, COIL03_2, COIL03_1) company
It connects, controls the contact on-off of each relay (Kl, K2, K3) respectively；
The power supply output pin and AC/DC power-switching circuit (3) out-put supply positive terminal of the driving and control unit (5)
(PWR) it connects, the power input pin of the driving and control unit (5) is connect with system power supply power supply positive terminal (VDD).
2. a kind of single-fire-wire electronic switch circuit (1) according to claim 1, it is characterised in that: the AC/DC power supply
Conversion circuit (3) includes for micro energy lose Width funtion power module (U3), third diode (D3), 3rd resistor (R3) and two filters
The anode of wave capacitor (C2, C4), the third diode (D3) is connected with the first load wiring terminal (LOAD1), and described the
The cathode of three diodes (D3) is connect through 3rd resistor (R3) with the input terminal of the micro energy lose Width funtion power module (U3), institute
The output end for stating micro energy lose Width funtion power module (U3) is connect with the input terminal of the power switch circuit (4), micro- function
The input terminal and output end for consuming Width funtion power module (U3) are connected with one end of two filter capacitors (C2, C4) respectively；It is described
The feedback pin (FB) and internal reference voltage pin of micro energy lose Width funtion power module (U3) connect with first resistor both ends respectively
Connect, the power ground pin of the micro energy lose Width funtion power module (U3), two filter capacitors (C2, C4) the other end with
System dc power supply publicly (GND) connects.
3. a kind of single-fire-wire electronic switch circuit (1), it is characterised in that: including relay (K1, K2, K3), power-supplying circuit
(2), pipe unit (8), driving and control unit (5) are switched；
The load wiring terminal (LOAD1, LOAD2, LOAD3) of the single-fire-wire electronic switch circuit (1) is respectively by external negative
(13,14,15) are carried to connect with AC alternating current input zero curve (N)；
The load wiring terminal (LOAD1, LOAD2, LOAD3) of the single-fire-wire electronic switch circuit (1) simultaneously respectively with pair
Answer normally opened contact one end of relay (K, K2, K3) to connect, the normally opened contact other end of whole relays (K1, K2, K3) with open
Close drain electrode (D) connection of pipe (Q1)；
The power-supplying circuit (2) includes AC/DC power-switching circuit (3) and power switch circuit (4)；Power-supplying circuit
(2) three input terminals respectively with three load wiring terminals of single-fire-wire electronic switch circuit (1) (LOAD1, LOAD2,
LOAD3 it) connects, the input of AC/DC power-switching circuit (3) out-put supply positive terminal (PWR) and the power switch circuit (4)
End connection, power switch circuit (4) output end are connect with system power supply power supply positive terminal (VDD)；
The switch pipe unit (8) includes switch tube assembly (7)；
The switch tube assembly (7) includes switching tube (Q1), or is composed in parallel by switching tube (Q1) and external diode (D2)
Circuit, the diode (D2) be low voltage difference power schottky rectifier or Schottky diode；
The switching tube (Q1) is field-effect tube MOSFET；
Hot terminal (L), external AC alternating current of the source electrode (S) of the switching tube (Q1), single-fire-wire electronic switch circuit (1)
Input firewire (LINE) publicly (GND) is connect with system dc power supply；The drain electrode (D) of the switching tube (Q1) and whole relays
The normally opened contact other end of device (K1, K2, K3) connects；
The driving and control unit (5) include driving unit (12) and control unit (11)；
The control gate of field-effect tube control pin (FET_CTRL) and the switching tube (Q1) of the driving and control unit (5)
(G) is connected for pole, is used to the conducting and cut-off of driving switch pipe (Q1)；
The drain electrode (D) of the exchange input pin (AC1_COM) and the switching tube (Q1) of the driving and control unit (5) and each
The normally opened contact other end end of relay (K1, K2, K3) connects；
It is described driving and control unit (5) the positive and negative end pin of three group relay coil power supplies respectively with each relay (Kl,
K2, K3) driving coil both ends (COIL01_2, COIL01_1, COIL02_2, COIL02_1, COIL03_2, COIL03_1) company
It connects, controls the contact on-off of each relay (Kl, K2, K3) respectively；
The power supply output pin and AC/DC power-switching circuit (3) out-put supply positive terminal of the driving and control unit (5)
(PWR) it connects, the power input pin of the driving and control unit (5) is connect with system power supply power supply positive terminal (VDD).
4. a kind of single-fire-wire electronic switch circuit (1) according to claim 3, it is characterised in that: the AC/DC power supply
Conversion circuit (3) include micro energy lose Width funtion power module (U3), third and fourth, five diodes (D3, D4, D5), 3rd resistor
(R3) and two filter capacitors (C2, C4), it is described third and fourth, the anodes of five diodes (D3, D4, D5) connects with each load respectively
Line terminals (LOAD1, LOAD2, LOAD3) connection, it is described third and fourth, the cathode of five diodes (D3, D4, D5) is through 3rd resistor
(R3) it is connect with the input terminal of the micro energy lose Width funtion power module (U3), the micro energy lose Width funtion power module (U3)
Output end is connect with the input terminal of the power switch circuit (4), the input terminal of the micro energy lose Width funtion power module (U3)
It is connected respectively with one end of two filter capacitors (C2, C4) with output end；The micro energy lose Width funtion power module (U3) it is anti-
Feedback pin (FB) and internal reference voltage pin are connect with first resistor both ends respectively, the micro energy lose Width funtion power module
(U3) other end of power ground pin, two filter capacitors (C2, C4) publicly (GND) is connect with system dc power supply.
5. according to claim 1 to single-fire-wire electronic switch circuit (1) described in any claim in 4, it is characterised in that: institute
Stating switch pipe unit (8) further includes EMI filter circuit, and the EMI filter circuit includes the first inductance (L1) and first capacitor
(C1), first inductance (L1) is connected on the hot terminal sub (L) of the single-fire-wire electronic switch circuit (1) and described opens
Between the source electrode (S) for closing pipe (Q1), one end of the first capacitor (C1) is connect with first inductance (L1), first electricity
The other end for holding (C1) is connect with the drain electrode (D) of the switching tube (Q1).
6. according to claim 1 to single-fire-wire electronic switch circuit (1) described in any claim in 4, it is characterised in that: institute
Stating driving unit (12) includes the second chip module (U2), and the second chip module model is XD-KC05, second chip
The positive and negative end pin (K1+, K1-, K2+, K2-, K3+, K3-) of three group relay coil power supplies of module (U2) respectively with it is each after
Electric appliance (Kl, K2, K3) driving coil both ends are connected, and control the contact on-off of each relay (Kl, K2, K3) respectively；
Power supply power supply pin (VCC) connection third capacitor (C3) of second chip module (U2) is public to system dc power supply
(GND) is filtered on ground, while the power output end of the AC/DC power-switching circuit is connected to by first diode forward direction
(PWR), the relay driving energization pins (VCC1) of second chip module (U2) are supplied by second resistance (R2) and system
Electric power positive end (VDD) is connected；
The control grid (G) of driving unit (12) field-effect tube control pin (FET_CTRL) connection switch pipe (Q).
7. according to claim 1 to single-fire-wire electronic switch circuit (1) described in any claim in 4, it is characterised in that: institute
Stating control unit (11) includes the control circuit or module formed using chip or discrete component, output control pin respectively with
Second chip module (U2) three group relays control input pin (K1_CTRL-, K1_CTRL+, K2_CTRL-, K2_CTRL+,
K3_CTRL-, K3_CTRL+) connection, for realizing the drive control to each relay.
8. feature exists according to claim 1 to a kind of single-fire-wire electronic switch circuit (1) described in any claim in 4
In: the relay (K1, K2, K3) be magnetic latching relay, including twin coil magnetic latching relay or unicoil magnetic keep after
Electric appliance.
9. feature exists according to claim 1 to a kind of single-fire-wire electronic switch circuit (1) described in any claim in 4
In: the AC/DC power-switching circuit (3) includes Switching Power Supply, the circuit that is perhaps made of DC/DC converter or by PWM
Control the ac-dc converter circuit or module of chip or discrete component composition.
10. feature exists according to claim 1 to a kind of single-fire-wire electronic switch circuit (1) described in any claim in 4
In: the power switch circuit (4), including reset circuit and DC/DC circuit, the reset circuit include voltage detector or answer
Position IC, the DC/DC circuit include voltage-dropping type DC/DC controller or synchronous buck converter or voltage-dropping type DC/DC conversion
Device；
The input pin of the power pins of the reset circuit and the DC/DC circuit and the AC/DC power-switching circuit (3)
The PWR connection of out-put supply positive terminal, the grounding pin and system of the grounding pin of the reset circuit and the DC/DC circuit are straight
The control of the publicly GND connection of galvanic electricity source, the output pin of the reset circuit and the DC/DC circuit enables pin EN and connects
It connects, the output pin of the DC/DC circuit is connect with system power supply power supply positive terminal VDD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821290755.XU CN208707312U (en) | 2018-08-12 | 2018-08-12 | A kind of single-fire-wire electronic switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821290755.XU CN208707312U (en) | 2018-08-12 | 2018-08-12 | A kind of single-fire-wire electronic switch circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208707312U true CN208707312U (en) | 2019-04-05 |
Family
ID=65942873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821290755.XU Active CN208707312U (en) | 2018-08-12 | 2018-08-12 | A kind of single-fire-wire electronic switch circuit |
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| Country | Link |
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| CN (1) | CN208707312U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923424A (en) * | 2018-08-12 | 2018-11-30 | 东莞市迅迪电子有限公司 | A kind of single-fire-wire electronic switch circuit |
| WO2021068504A1 (en) * | 2019-10-11 | 2021-04-15 | 宁波公牛电器有限公司 | Switching circuit, single-live line switch and switching device |
-
2018
- 2018-08-12 CN CN201821290755.XU patent/CN208707312U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923424A (en) * | 2018-08-12 | 2018-11-30 | 东莞市迅迪电子有限公司 | A kind of single-fire-wire electronic switch circuit |
| WO2021068504A1 (en) * | 2019-10-11 | 2021-04-15 | 宁波公牛电器有限公司 | Switching circuit, single-live line switch and switching device |
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