CN209448724U - A kind of list firewire switch power-supply circuit and single firewire switch - Google Patents
A kind of list firewire switch power-supply circuit and single firewire switch Download PDFInfo
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- CN209448724U CN209448724U CN201920036130.9U CN201920036130U CN209448724U CN 209448724 U CN209448724 U CN 209448724U CN 201920036130 U CN201920036130 U CN 201920036130U CN 209448724 U CN209448724 U CN 209448724U
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Abstract
The utility model is suitable for intelligent switch technology field.A kind of single firewire switch power-supply circuit and single firewire switch are provided, single firewire switch power-supply circuit includes being also connected with comparison circuit with the first terminal of load connection, the Second terminal connecting with firewire and sequentially connected switching circuit, comparison circuit, power-supply circuit, voltage conversion circuit, LDO module and wireless module, LDO module；Switching circuit is connect with first terminal and Second terminal respectively；Voltage conversion circuit includes the DC/DC chip connecting with power-supply circuit and the peripheral circuit connecting with DC/DC chip；Peripheral circuit is also respectively connected with switching circuit, comparison circuit and power-supply circuit, and DC/DC chip is connect by peripheral circuit with LDO module.Electrical efficiency is taken when list firewire switch power-supply circuit provided by the utility model can effectively improve single firewire switch ON state, guarantees that single firewire switch works normally, single firewire switch is made to adapt to the control of small-power lamps and lanterns.
Description
Technical field
The utility model belongs to intelligent switch technology field more particularly to a kind of single firewire switch power-supply circuit and single firewire
Switch.
Background technique
In traditional household electricity environment, based on the considerations of safety and cost, the control mode of mechanical switch is all only to draw
Enter a firewire to the position of switch, the control of lamps and lanterns is realized by switch connection/cutting firewire.Not with present technology
Disconnected development and people to enjoy life promotion, smart home product it is commonly used, the intelligent control of lamps and lanterns is become must
Indispensable a part.Single firewire intelligent switch product generates under such market demand, has been internally integrated reality
The relay of existing switching function and the wireless module for realizing intelligent control, have no need to change the wiring environment of household electricity, can be complete
Traditional mechanical switch is substituted entirely.
In the prior art, due to single firewire, in the case where turning on light, the electric current flowed through on firewire is mainly by loading
Energy consumption condition determine that, when bearing power is smaller, the energy of firewire electric current very little, the switch interception of single firewire is not enough to supply nothing
Wire module takes electrical efficiency low when single firewire switchs ON state, so that single firewire switchs cisco unity malfunction, it is difficult to adapt to small-power
The control of load.
Utility model content
The utility model provides a kind of single firewire switch power-supply circuit, it is intended to solve single firewire switch of the prior art negative
When load power is smaller, single firewire takes electrical efficiency low when switching ON state, it is difficult to the problem of adapting to the control of low-power load.
The utility model is realized in this way a kind of list firewire switchs power-supply circuit, including the first end with load connection
Son, the Second terminal being connect with firewire and sequentially connected switching circuit, comparison circuit, power-supply circuit, voltage conversion electricity
Road, LDO module and wireless module, the LDO module are also connected with the comparison circuit；
The switching circuit is connect with the first terminal and the Second terminal respectively, and described for being turned on or off
First terminal and the Second terminal；
The voltage conversion circuit includes the DC/DC chip connecting with the power-supply circuit and connects with the DC/DC chip
The peripheral circuit connect, the power-supply circuit is for storing electric energy and powering to the DC/DC chip；The peripheral circuit is also distinguished
The switching circuit, the comparison circuit and the power-supply circuit are connected, the DC/DC chip passes through the peripheral circuit and institute
State the connection of LDO module.
Preferably, the peripheral circuit includes resistance R6, resistance R7, inductance L1 and capacitor C3；
The pin 1 of the DC/DC chip is connected with the power-supply circuit, and the resistance R6 is concatenated and same with the resistance R7
When it is in parallel with the capacitor C3, the one end the resistance R7 is separately connected the pin 2, the power-supply circuit, institute of the DC/DC chip
Comparison circuit and the switching circuit are stated, the pin 3 of the DC/DC chip is formed between the resistance R6 and the resistance R7
The pin 3 of node, the DC/DC chip is connect with the resistance R6 with the resistance R7 simultaneously, the one end the inductance L1 and institute
The pin 3 for stating DC/DC chip connects, and the other end of the inductance L1 is separately connected the resistance R6, the capacitor C3 and described
LDO module.
Preferably, the power-supply circuit includes diode D3, voltage-stabiliser tube D1, resistance R1 and capacitor C1；
The diode D3 is concatenated with the resistance R1 and in parallel with the capacitor C1 simultaneously, the one end the capacitor C1 and institute
State voltage-stabiliser tube D1 connection and be connected with the pin 1 of the DC/DC chip by the diode D3, the capacitor C1 other end and
The one end the resistance R1 connects and is connected with the comparison circuit, and the comparison circuit is in the voltage-stabiliser tube D1 and the resistance R1
Between form node, the comparison circuit is connect with the voltage-stabiliser tube D1 and the resistance R1 simultaneously.
Preferably, the switching circuit includes relay, metal-oxide-semiconductor Q2, resistance R2 and diode D2；
The drain electrode of the metal-oxide-semiconductor Q2 connects the relay and the diode D2, the diode D2 other end connection
The comparison circuit and the power-supply circuit, the relay connect the first terminal；
The source electrode of the metal-oxide-semiconductor Q2 connects the Second terminal, the comparison circuit, the power-supply circuit and the electricity
Voltage conversion circuit；
The grid of the metal-oxide-semiconductor Q2 passes through the resistance R2 connection comparison circuit.
Preferably, the comparison circuit includes operational amplifier U1, capacitor C2, triode Q1, resistance R4 and resistance R5；
The base stage of the triode Q1 is connect with the resistance R2, the emitter of the triode Q1 and the metal-oxide-semiconductor Q2
Source electrode connection；The collector of the triode Q1 is connect with the resistance R4, and the resistance R4 is concatenated simultaneously with the resistance R5
It is connected with the LDO module；
The pin 1 of the operational amplifier U1 is connected with the capacitor C2, the both ends the capacitor C2 respectively with the pressure stabilizing
Pipe D1 is connected with the resistance R1, and the pin 2 of the operational amplifier U1 is connect with the resistance R4 and the resistance R5 respectively,
The pin 3 of the operational amplifier U1 is connect with the resistance R2 and the resistance R3 respectively, and the operational amplifier U1's draws
Foot 4 is connect with the diode D2 and the voltage-stabiliser tube D1 respectively, and the pin 5 of the operational amplifier U1 is separately connected described
Two-terminal, the source electrode of the metal-oxide-semiconductor Q2, the capacitor C1 and the DC/DC chip pin 1.
Preferably, the DC/DC chip and the inductance L1 split settings, and the inductance L1 is set to the DC/DC core
Outside piece.
Preferably, the DC/DC chip is MP2317 chip.
Preferably, the integrally disposed inside in the DC/DC chip the inductance L1.
The utility model also provides a kind of single firewire switch, switchs power-supply circuit including above-mentioned single firewire.
List firewire switch power-supply circuit provided by the utility model stores electric energy by power-supply circuit and supplies to DC/DC chip
Electricity boosts to power-supply circuit output voltage by DC/DC chip, when bearing power is smaller, passes through firewire electric current very little
In the case where, power-supply circuit stores electric energy to supply DC/DC chip, is boosted by the voltage conversion of DC/DC chip, effectively
Electrical efficiency is taken when improving single firewire switch ON state, guarantees that single firewire switch works normally, adapts to single firewire switch small
The control of power termination.
Detailed description of the invention
Fig. 1 is the circuit diagram that the utility model list firewire switchs power-supply circuit.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
List firewire switch power-supply circuit provided by the utility model stores electric energy by power-supply circuit and supplies to DC/DC chip
Electricity boosts to power-supply circuit output voltage by DC/DC chip, when bearing power is smaller, passes through firewire electric current very little
In the case where, power-supply circuit stores electric energy to supply DC/DC chip, is boosted by the voltage conversion of DC/DC chip, effectively
Electrical efficiency is taken when improving single firewire switch ON state, guarantees that single firewire switch works normally, adapts to single firewire switch small
The control of power termination.
Fig. 1 is please referred to, list firewire switch power-supply circuit includes connecting with the first terminal CON1 of load connection, with firewire
Second terminal CON2 and sequentially connected switching circuit 12, comparison circuit 13, power-supply circuit 14, voltage conversion circuit 15,
LDO module 16 and wireless module 17, LDO module 16 are also connected with comparison circuit 13.
Switching circuit 12 is connect with first terminal CON1 and Second terminal CON2 respectively, and for the first end that is turned on or off
Sub- CON1 and Second terminal CON2.
Voltage conversion circuit 15 includes: to connect with power-supply circuit 14 and boost to 14 output voltage of power-supply circuit
DC/DC chip U2；The peripheral circuit 152 connecting with DC/DC chip U2, power-supply circuit 14 is for storing electric energy and to the DC/
DC chip U2 power supply；Peripheral circuit 152 is also respectively connected with switching circuit 12, comparison circuit 13 and power-supply circuit 14, DC/DC chip
U2 is connect by peripheral circuit 152 with LDO module 16.
In the utility model embodiment, electric energy is stored by power-supply circuit 14 and is powered to DC/DC chip U2, is being passed through
DC/DC chip U2 boosts to 14 output voltage of power-supply circuit, when bearing power is smaller, the case where firewire electric current very little
Under, electric energy is stored to supply DC/DC chip U2 by power-supply circuit 14, is boosted by the voltage conversion of DC/DC chip U2,
Electrical efficiency is taken when effectively increasing single firewire switch ON state, guarantees that single firewire switch works normally, fit single firewire switch can
Answer the control of small-power lamps and lanterns.
As one embodiment of the utility model, peripheral circuit 152 includes resistance R6, resistance R7, inductance L1 and capacitor
C3；The pin 1 of DC/DC chip U2 is connected with power-supply circuit 14, and resistance R6 is concatenated with resistance R7 and in parallel with capacitor C3 simultaneously, electricity
Resistance one end R7 is separately connected pin 2, power-supply circuit 14, comparison circuit 13 and the switching circuit 12 of DC/DC chip U2, DC/DC core
The pin 3 of piece U2 forms node between resistance R6 and resistance R7, the pin 3 of DC/DC chip U2 simultaneously with resistance R6 and resistance
R7 connection, the one end inductance L1 are connect with the pin 3 of DC/DC chip U2, and the other end of inductance L1 is separately connected resistance R6, capacitor C3
And LDO module 16.
As one embodiment of the utility model, power-supply circuit 14 includes diode D3, voltage-stabiliser tube D1, resistance R1 and electricity
Hold C1；Diode D3 is concatenated and in parallel with capacitor C1 simultaneously with resistance R1, and the one end capacitor C1 connect with voltage-stabiliser tube D1 and by two
Pole pipe D3 is connected with the pin 1 of DC/DC chip U2, the capacitor C1 other end connect with the one end resistance R1 and with 13 phase of comparison circuit
Even, comparison circuit 13 forms node between voltage-stabiliser tube D1 and resistance R1, comparison circuit 13 simultaneously with voltage-stabiliser tube D1 and resistance R1
Connection.
As one embodiment of the utility model, switching circuit 12 includes relay K1, metal-oxide-semiconductor Q2, resistance R2 and two
Pole pipe D2；The drain electrode of metal-oxide-semiconductor Q2 connects relay K1 and diode D2, and the diode D2 other end connects comparison circuit 13 and takes electricity
Circuit 14；Source electrode connection Second terminal CON2, comparison circuit 13, power-supply circuit 14 and the voltage conversion circuit 15 of metal-oxide-semiconductor Q2；
The grid of metal-oxide-semiconductor Q2 passes through resistance R2 connection comparison circuit 13.The present embodiment, first terminal CON1 connect with output line of fire and with
Load connection, Second terminal CON2 are connect with input firewire.When relay K1 is closed, first terminal CON1 and Second terminal CON2
Conducting, to connect the load being serially connected on first terminal CON1.When relay K2 is disconnected, first terminal CON1 and Second terminal
CON2 open circuit, to disconnect the circuit for the load being serially connected on first terminal CON1.
As one embodiment of the utility model, comparison circuit 13 includes operational amplifier U1, capacitor C2, triode
Q1, resistance R4 and resistance R5；The base stage of triode Q1 is connect with resistance R2, the emitter of triode Q1 and the source electrode of metal-oxide-semiconductor Q2
Connection；The collector of triode Q1 is connect with resistance R4, and resistance R4 is concatenated with resistance R5 and is connected with LDO module 16.
The pin 1 of operational amplifier U1 is connected with capacitor C2, and the both ends capacitor C2 are connect with voltage-stabiliser tube D1 and resistance R1 respectively,
The pin 2 of operational amplifier U1 distinguishes resistance R4 and resistance R5 connection, the pin 3 of operational amplifier U1 respectively with resistance R2 and electricity
R3 connection is hindered, the pin 4 of operational amplifier U1 is connect with diode D2 and voltage-stabiliser tube D1 respectively, the pin 5 of operational amplifier U1
It is separately connected the pin 1 of Second terminal CON2, the source electrode of metal-oxide-semiconductor Q2, capacitor C1 and DC/DC chip U2.Wherein, operational amplifier
The pin 1 and pin 2 of U1 is input terminal, and the pin 3 of operational amplifier U1 is output end.
As one embodiment of the utility model, DC/DC chip U2 and inductance L1 split settings, while inductance L1 is set to
Outside DC/DC chip U2.In the present embodiment, inductance L1 is arranged outside DC/DC chip U2, is convenient for DC/DC chip U2 and inductance
The connection of L1.
As one embodiment of the utility model, DC/DC chip U2 is MP2317 chip.By using MP2317 core
Piece, MP2317 chip need power-supply circuit 14 to reach higher voltage value and just have voltage output, so that power-supply circuit can be put aside more
Electric energy, and then DC/DC chip U2 can improve biggish starting voltage to wireless module, to adapt to the control of smaller power load
System.
As another embodiment of the utility model, the integrally disposed inside in DC/DC chip U2 inductance L1.This implementation
In example, inductance L1 is integrally disposed in the inside of DC/DC chip U2, so as to save the occupied space of inductance L1, reduces inductance
L1 occupies the volume of switch.
Single firewire switch power-supply circuit working principle of the utility model is as follows:
After relay K1 closure, when the pole D (drain electrode) upper end in metal-oxide-semiconductor Q2 is positive relative to the pole S (source electrode) lower end
Half period when, city supply electricity to capacitor C1 charging, when capacitor C1 voltage rise to breakdown voltage-stabiliser tube D1 after, capacitor C2 charging make operation
1 voltage of amplifier U1 pin rises, and in the voltage of pin 2 of the voltage on capacitor C2 greater than operational amplifier U1, operation is put
The pin 3 of big device U1 exports high level, by resistance R2 driving metal-oxide-semiconductor Q2 conducting, to connect the load being serially connected on alternating current.
Wherein, load can be lamps and lanterns, electric fan, air-conditioning, electromagnetic oven etc..In the process, the energy of capacitor C1 storage passes through simultaneously
Diode D2 is supplied to DC/DC chip U2, is powered by inductance L1 to LDO module 16.Signal is fed back by resistance R5 simultaneously
To the pin 2 of operational amplifier U1, the closed-loop control of whole system is completed.
Wherein, the high level that the pin 3 of operational amplifier U1 exports passes through resistance R3 driving triode Q1 simultaneously, by resistance
R4 is switched to bottom, drags down the voltage of the pin 2 of operational amplifier U1, keeps the high level output of operational amplifier U1, until
Next half period of alternating current repeats movement above.
The utility model also provides a kind of single firewire switch, switchs power-supply circuit including above-mentioned single firewire.
List firewire switch power-supply circuit provided by the utility model stores electric energy by power-supply circuit and supplies to DC/DC chip
Electricity boosts to power-supply circuit output voltage by DC/DC chip, when bearing power is smaller, passes through firewire electric current very little
In the case where, power-supply circuit stores electric energy to supply DC/DC chip, is boosted by the voltage conversion of DC/DC chip, effectively
Electrical efficiency is taken when improving single firewire switch ON state, guarantees that single firewire switch works normally, adapts to single firewire switch small
The control of power termination.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (9)
1. a kind of list firewire switchs power-supply circuit, which is characterized in that including with load connection first terminal, connect with firewire
Second terminal and sequentially connected switching circuit, comparison circuit, power-supply circuit, voltage conversion circuit, LDO module and nothing
Wire module, the LDO module are also connected with the comparison circuit；
The switching circuit is connect with the first terminal and the Second terminal respectively, and for being turned on or off described first
Terminal and the Second terminal；
The voltage conversion circuit includes the DC/DC chip connecting with the power-supply circuit and connect with the DC/DC chip
Peripheral circuit, the power-supply circuit is for storing electric energy and powering to the DC/DC chip；The peripheral circuit is also respectively connected with
The switching circuit, the comparison circuit and the power-supply circuit, the DC/DC chip by the peripheral circuit with it is described
The connection of LDO module.
2. list firewire according to claim 1 switchs power-supply circuit, which is characterized in that the peripheral circuit includes resistance
R6, resistance R7, inductance L1 and capacitor C3；
The pin 1 of the DC/DC chip is connected with the power-supply circuit, the resistance R6 concatenated with the resistance R7 and simultaneously with
The capacitor C3 is in parallel, and the one end the resistance R7 is separately connected the pin 2, the power-supply circuit, the ratio of the DC/DC chip
Compared with circuit and the switching circuit, the pin 3 of the DC/DC chip forms section between the resistance R6 and the resistance R7
Point, the pin 3 of the DC/DC chip are connect with the resistance R6 with the resistance R7 simultaneously, the one end the inductance L1 with it is described
The pin 3 of DC/DC chip connects, and the other end of the inductance L1 is separately connected the resistance R6, the capacitor C3 and the LDO
Module.
3. list firewire according to claim 2 switchs power-supply circuit, which is characterized in that the power-supply circuit includes diode
D3, voltage-stabiliser tube D1, resistance R1 and capacitor C1；
The diode D3 is concatenated and in parallel with the capacitor C1 simultaneously with the resistance R1, one end the capacitor C1 and described steady
Pressure pipe D1 connection and be connected with the pin 1 of the DC/DC chip by the diode D3, the capacitor C1 other end with it is described
The one end resistance R1 connects and is connected with the comparison circuit, and the comparison circuit is between the voltage-stabiliser tube D1 and the resistance R1
Node is formed, the comparison circuit is connect with the voltage-stabiliser tube D1 and the resistance R1 simultaneously.
4. list firewire according to claim 3 switchs power-supply circuit, which is characterized in that the switching circuit includes relay
Device, metal-oxide-semiconductor Q2, resistance R2 and diode D2；
The drain electrode of the metal-oxide-semiconductor Q2 connects the relay and the diode D2, described in the diode D2 other end connection
Comparison circuit and the power-supply circuit, the relay connect the first terminal；
The source electrode of the metal-oxide-semiconductor Q2 connects the Second terminal, the comparison circuit, the power-supply circuit and the voltage and turns
Change circuit；
The grid of the metal-oxide-semiconductor Q2 passes through the resistance R2 connection comparison circuit.
5. list firewire according to claim 4 switchs power-supply circuit, which is characterized in that the comparison circuit includes that operation is put
Big device U1, capacitor C2, triode Q1, resistance R4 and resistance R5；
The base stage of the triode Q1 is connect with the resistance R2, the source of the emitter of the triode Q1 and the metal-oxide-semiconductor Q2
Pole connection；The collector of the triode Q1 is connect with the resistance R4, the resistance R4 concatenated with the resistance R5 and with institute
LDO module is stated to be connected；
The pin 1 of the operational amplifier U1 is connected with the capacitor C2, the both ends the capacitor C2 respectively with the voltage-stabiliser tube D1
It is connected with the resistance R1, the pin 2 of the operational amplifier U1 is connect with the resistance R4 and the resistance R5 respectively, described
The pin 3 of operational amplifier U1 is connect with the resistance R2 and the resistance R3 respectively, and the pin 4 of the operational amplifier U1 divides
It is not connect with the diode D2 and the voltage-stabiliser tube D1, the pin 5 of the operational amplifier U1 is separately connected the second end
The pin 1 of the source electrode of sub, the described metal-oxide-semiconductor Q2, the capacitor C1 and the DC/DC chip.
6. list firewire according to claim 2 switchs power-supply circuit, which is characterized in that the DC/DC chip and the electricity
Feel L1 split settings, and the inductance L1 is set to the DC/DC chip exterior.
7. list firewire according to claim 6 switchs power-supply circuit, which is characterized in that the DC/DC chip is MP2317
Chip.
8. list firewire according to claim 2 switchs power-supply circuit, which is characterized in that the inductance L1 is integrally disposed in institute
State the inside of DC/DC chip.
9. a kind of list firewire switch, which is characterized in that taken including the switch of single firewire described in claim 1-8 any one electric
Road.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018218963407 | 2018-11-16 | ||
| CN201821896340 | 2018-11-16 |
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| Publication Number | Publication Date |
|---|---|
| CN209448724U true CN209448724U (en) | 2019-09-27 |
Family
ID=68016177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920036130.9U Active CN209448724U (en) | 2018-11-16 | 2019-01-09 | A kind of list firewire switch power-supply circuit and single firewire switch |
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| Country | Link |
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| CN (1) | CN209448724U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162683A (en) * | 2020-01-22 | 2020-05-15 | 上海晶丰明源半导体股份有限公司 | Power conversion circuit and method thereof |
| CN111194132A (en) * | 2020-02-12 | 2020-05-22 | 西安奇妙电子科技有限公司 | Single live wire power-taking circuit and single live wire switch |
| CN111885788A (en) * | 2020-07-15 | 2020-11-03 | 深圳市欧瑞博科技股份有限公司 | On-state power taking circuit, intelligent single-live-wire switch module and intelligent single-live-wire switch |
-
2019
- 2019-01-09 CN CN201920036130.9U patent/CN209448724U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162683A (en) * | 2020-01-22 | 2020-05-15 | 上海晶丰明源半导体股份有限公司 | Power conversion circuit and method thereof |
| US11456676B2 (en) | 2020-01-22 | 2022-09-27 | Shanghai Bright Power Semiconductor Co., Ltd. | Power conversion circuit and method thereof |
| CN111194132A (en) * | 2020-02-12 | 2020-05-22 | 西安奇妙电子科技有限公司 | Single live wire power-taking circuit and single live wire switch |
| CN111194132B (en) * | 2020-02-12 | 2022-02-15 | 西安奇妙电子科技有限公司 | Single live wire power-taking circuit and single live wire switch |
| CN111885788A (en) * | 2020-07-15 | 2020-11-03 | 深圳市欧瑞博科技股份有限公司 | On-state power taking circuit, intelligent single-live-wire switch module and intelligent single-live-wire switch |
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