CN205017209U - POE converter and voltage conversion circuit - Google Patents
POE converter and voltage conversion circuit Download PDFInfo
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- CN205017209U CN205017209U CN201520775242.8U CN201520775242U CN205017209U CN 205017209 U CN205017209 U CN 205017209U CN 201520775242 U CN201520775242 U CN 201520775242U CN 205017209 U CN205017209 U CN 205017209U
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Abstract
The utility model provides a POE converter and voltage conversion circuit, this POE converter includes: a USB interface for importing voltage input interface, the controller chip of first voltage, be used for with a voltage conversion for the voltage conversion circuit of second voltage, be used for importing second voltage, first voltage is greater than second voltage, just second voltage does the voltage that the USB interface was supported, wherein, the voltage input interface with controller chip electric connection, voltage conversion circuit with controller chip electric connection, and voltage conversion circuit with USB interface electric connection. The embodiment of the utility model provides an in, voltage conversion circuit can be with the second voltage of a voltage conversion for the USB interface support to make the POE power supply mode to make the POE power supply mode more convenient, more general for the electronic equipment power supply that has the USB interface, have universality, suitability, and can promote the use of POE power supply mode.
Description
Technical field
The utility model relates to circuit field, especially a kind of POE transducer and voltage conversion circuit.
Background technology
POE (PowerOverEthernet, active Ethernet) powering refers to: when Ethernet wiring architecture does not make any changes, while for some IP-based terminals (as IP telephone machine, wireless local network connecting point, web camera etc.) transmission of data signals, the technology of direct current supply can also be provided by kind equipment for this reason.Along with the fast development of video monitoring service, it also will be more and more general that POE powers.
At present, general POE power supply interface is all RJ45 (RegisteredJack45, Registered Jack 45) interface, and in family's monitoring, the interface the most often used is USB (UniversalSerialBus, USB) interface, and also most of electronic equipment also all has USB interface.Current POE power supply technique for having the power electronic equipment of USB interface, cannot affect the popularization of POE power supply technique.
Utility model content
The utility model embodiment provides a kind of POE transducer, described POE transducer specifically comprises: for input the voltage input interface of the first voltage, controller chip, for by the first voltage transitions be the second voltage voltage conversion circuit, be used for inputting the general-purpose serial bus USB interface of the second voltage, described first voltage is greater than described second voltage, and described second voltage is the voltage that described USB interface is supported;
Wherein, described voltage input interface and described controller chip are electrically connected, and described voltage conversion circuit and described controller chip are electrically connected, and described voltage conversion circuit and described USB interface are electrically connected.
Preferably, described voltage conversion circuit specifically comprises: step-down chip, inductance, diode, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance; Wherein:
The first end ground connection of described first electric capacity, the second end is connected to the Vin pin of step-down chip; The first end of described second electric capacity is connected to the SW pin of step-down chip, and the second end is connected to the BOOT pin of step-down chip; The first end ground connection of described 3rd electric capacity, the second end is connected to the TPAD pin of step-down chip; The first end ground connection of described 4th electric capacity, the second end is connected with the 4th resistance; The first end ground connection of described 5th electric capacity, the second end is output; The first end ground connection of described 6th electric capacity, the second end is output;
The first end of described first resistance is connected to the Vin pin of step-down chip, and the second end is connected to the En pin of step-down chip; The first end ground connection of described second resistance, the second end is connected to the En pin of step-down chip; The first end ground connection of described 3rd resistance, the second end is connected to the RT/CLK pin of step-down chip; The first end of described 4th resistance is connected with described 4th electric capacity, and the second end is connected to the COMP pin of step-down chip; The first end ground connection of described 5th resistance, the second end is connected to the FB pin of step-down chip; The first end of described 6th resistance is connected to the FB pin of step-down chip, and the second end is output;
The first end of described diode is connected to the SW pin of step-down chip, the second end ground connection;
The first end of described inductance is connected to the SW pin of step-down chip, and the second end is output.
Preferably, described step-down chip specifically comprises: communication power supply system TPS step-down chip.
Preferably, POE transducer is docked with the USB interface of electronic equipment by described USB interface.
Preferably, described first voltage specifically comprises 48 volts, and described second voltage specifically comprises 5 volts.
Preferably, described POE transducer is docked with the voltage output interface of feeder ear equipment PSE by described voltage input interface, receives the first voltage of input.
Preferably, described voltage input interface specifically comprises Registered Jack RJ45 network interface, and described voltage output interface specifically comprises RJ45 network interface.
Preferably, described PSE is powered to described POE transducer by POE data wire, or described PSE is powered by POE transducer described in POE dead pair.
The utility model embodiment provides a kind of voltage conversion circuit, be applied on POE transducer, described voltage conversion circuit comprises: step-down chip, inductance, diode, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance; Wherein:
The first end ground connection of described first electric capacity, the second end is connected to the Vin pin of step-down chip; The first end of described second electric capacity is connected to the SW pin of step-down chip, and the second end is connected to the BOOT pin of step-down chip; The first end ground connection of described 3rd electric capacity, the second end is connected to the TPAD pin of step-down chip; The first end ground connection of described 4th electric capacity, the second end is connected with the 4th resistance; The first end ground connection of described 5th electric capacity, the second end is output; The first end ground connection of described 6th electric capacity, the second end is output;
The first end of described first resistance is connected to the Vin pin of step-down chip, and the second end is connected to the En pin of step-down chip; The first end ground connection of described second resistance, the second end is connected to the En pin of step-down chip; The first end ground connection of described 3rd resistance, the second end is connected to the RT/CLK pin of step-down chip; The first end of described 4th resistance is connected with described 4th electric capacity, and the second end is connected to the COMP pin of step-down chip; The first end ground connection of described 5th resistance, the second end is connected to the FB pin of step-down chip; The first end of described 6th resistance is connected to the FB pin of step-down chip, and the second end is output;
The first end of described diode is connected to the SW pin of step-down chip, the second end ground connection;
The first end of described inductance is connected to the SW pin of step-down chip, and the second end is output.
Based on technique scheme, in the utility model embodiment, first voltage transitions can be the second voltage that USB interface is supported by voltage conversion circuit, thus make POE supply power mode can for having the power electronic equipment of USB interface, make POE supply power mode convenient, more general, there is generality, applicability, and the use of POE supply power mode can be promoted.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the POE transducer in a kind of execution mode of the utility model;
Fig. 2 is the circuit diagram of the voltage conversion circuit in a kind of execution mode of the utility model;
Fig. 3 and Fig. 4 is the circuit diagram that the POE in a kind of execution mode of the utility model powers.
Embodiment
For problems of the prior art, propose a kind of POE transducer in the utility model embodiment, as shown in Figure 1, this POE transducer specifically can comprise: voltage input interface, controller chip, voltage conversion circuit, USB interface.Wherein, voltage input interface and controller chip are electrically connected, and voltage conversion circuit and controller chip are electrically connected, and voltage conversion circuit and USB interface are electrically connected.
In the utility model embodiment, voltage input interface, for for inputting the first voltage; Voltage conversion circuit, for inputting the first voltage, and is the second voltage by the first voltage transitions, and exports the second voltage to USB interface; USB interface, for inputting the second voltage.Wherein, the first voltage is greater than the second voltage, and the voltage that the second voltage can be supported for USB interface.In a kind of embody rule, the first voltage specifically can comprise 48 volts, and the second voltage specifically can comprise 5 volts.
Wherein, the first voltage is DC (DirectCurrent, direct voltage), and the second voltage is DC.
In order to be the second voltage by the first voltage transitions, then voltage conversion circuit can as shown in Figure 2, and this voltage conversion circuit specifically can comprise: step-down chip, inductance L, diode D, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the 5th electric capacity C5, the 6th electric capacity C6, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6.
Wherein, the first end ground connection of the first electric capacity C1, the second end is connected to the Vin pin of step-down chip; The first end of the second electric capacity C2 is connected to the SW pin of step-down chip, and the second end is connected to the BOOT pin of step-down chip; The first end ground connection of the 3rd electric capacity C3, the second end is connected to the TPAD pin of step-down chip; The first end ground connection of the 4th electric capacity C4, the second end is connected with the 4th resistance R4; The first end ground connection of the 5th electric capacity C5, the second end is output; The first end ground connection of the 6th electric capacity C6, the second end is output.
Wherein, the first end of the first resistance R1 is connected to the Vin pin of step-down chip, and the second end is connected to the En pin of step-down chip; The first end ground connection of the second resistance R2, the second end is connected to the En pin of step-down chip; The first end ground connection of the 3rd resistance R3, the second end is connected to the RT/CLK pin of step-down chip; The first end of the 4th resistance R4 is connected with the 4th electric capacity C4, and the second end is connected to the COMP pin of step-down chip; The first end ground connection of the 5th resistance R5, the second end is connected to the FB pin of step-down chip; The first end of the 6th resistance R6 is connected to the FB pin of step-down chip, and the second end is output.
Wherein, the first end of diode D is connected to the SW pin of step-down chip, the second end ground connection.
Wherein, the first end of inductance L is connected to the SW pin of step-down chip, and the second end is output.
In the utility model embodiment, the input of voltage conversion circuit is Vin, and its voltage input levels is the first voltage.The input of voltage conversion circuit is Vout, and its voltage output value is the second voltage.
Wherein, BOOT pin is the reseting pin of step-down chip.Vin pin is the DC voltage input end of step-down chip.En pin is the enable input of step-down chip, and when En pin is high level, step-down chip normally works, and when En pin is low level, step-down chip turns off and do not work.RT/CLK pin is the clock input signal pin of step-down chip.FB pin is the feedback input end of step-down chip.COMP pin is that the control circuit of step-down chip compensates pin position.GND pin is the ground connection of step-down chip.SW pin is the switch output pin position of step-down chip.TPAD (ThermalPad) pin is the ground connection of step-down chip.
In the utility model embodiment, step-down chip specifically can include but not limited to: TPS (TelecomPowerSystem, communication power supply system) step-down chip, as TPS54360 step-down chip etc.
In the utility model embodiment, POE transducer can be docked with the USB interface of electronic equipment by USB interface.Based on this, POE transducer is by PSE (PowerSourcingEquipment, feeder ear equipment) after 48 volts of direct voltages providing convert 5 volts of direct voltages to, can be exported by the USB interface of POE transducer, and electronic equipment is by being connected to the USB interface of this POE transducer by the USB interface of self, 5 volts of direct voltages that POE transducer exports then can be used.Wherein, this electronic equipment is specifically as follows the headend equipment in family's monitoring, and as web camera, analog video camera, encoder etc., this electronic equipment for having other electronic equipment of USB interface, can also not repeat them here.
In the utility model embodiment, POE transducer is docked with the voltage output interface of PSE by voltage input interface, receives the first voltage of input.Wherein, voltage input interface specifically comprises RJ45 network interface, and voltage output interface specifically comprises RJ45 network interface.
Wherein, controller chip is specifically as follows PD (PowerDevice, receiving end equipment) controller chip.After POE transducer is docked with the RJ45 network interface of PSE by RJ45 network interface, carry out information interaction between this PSE and PD controller chip, to determine whether to power to POE transducer, specifying information reciprocal process repeats no more.If determine to power to POE transducer, then PSE is powered to POE transducer by the RJ45 network interface of POE transducer.
In the utility model embodiment, PSE can be powered to POE transducer by POE data wire, or PSE can be powered by POE dead pair POE transducer.As shown in Figure 3, be the circuit diagram that PSE is powered to POE transducer by POE data wire, as shown in Figure 4, for PSE carries out the circuit diagram of powering by POE dead pair POE transducer.Wherein, in figure 3, line sequence 1,2 can be linked and form positive pole, line sequence 3,6 be linked and forms negative pole, be equivalent to data wire and the multiplexing cable of supply lines.In the diagram, line sequence 4,5 can be linked and form positive pole, line sequence 7,8 be linked and forms negative pole, be equivalent to data wire and supply lines separately.
Based on technique scheme, in the utility model embodiment, first voltage transitions can be the second voltage that USB interface is supported by voltage conversion circuit, thus make POE supply power mode can for having the power electronic equipment of USB interface, make POE supply power mode convenient, more general, there is generality, applicability, and the use of POE supply power mode can be promoted.
Based on the design that the POE transducer with above-mentioned is same, in the utility model embodiment, a kind of voltage conversion circuit is also proposed, for being the second voltage by the first voltage transitions.As shown in Figure 2, this voltage conversion circuit specifically can comprise: step-down chip, inductance L, diode D, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the 5th electric capacity C5, the 6th electric capacity C6, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6.
Wherein, the first end ground connection of the first electric capacity C1, the second end is connected to the Vin pin of step-down chip; The first end of the second electric capacity C2 is connected to the SW pin of step-down chip, and the second end is connected to the BOOT pin of step-down chip; The first end ground connection of the 3rd electric capacity C3, the second end is connected to the TPAD pin of step-down chip; The first end ground connection of the 4th electric capacity C4, the second end is connected with the 4th resistance R4; The first end ground connection of the 5th electric capacity C5, the second end is output; The first end ground connection of the 6th electric capacity C6, the second end is output.
Wherein, the first end of the first resistance R1 is connected to the Vin pin of step-down chip, and the second end is connected to the En pin of step-down chip; The first end ground connection of the second resistance R2, the second end is connected to the En pin of step-down chip; The first end ground connection of the 3rd resistance R3, the second end is connected to the RT/CLK pin of step-down chip; The first end of the 4th resistance R4 is connected with the 4th electric capacity C4, and the second end is connected to the COMP pin of step-down chip; The first end ground connection of the 5th resistance R5, the second end is connected to the FB pin of step-down chip; The first end of the 6th resistance R6 is connected to the FB pin of step-down chip, and the second end is output.
Wherein, the first end of diode D is connected to the SW pin of step-down chip, the second end ground connection.
Wherein, the first end of inductance L is connected to the SW pin of step-down chip, and the second end is output.
In the utility model embodiment, the input of voltage conversion circuit is Vin, and its voltage input levels is the first voltage.The input of voltage conversion circuit is Vout, and its voltage output value is the second voltage.
Wherein, BOOT pin is the reseting pin of step-down chip.Vin pin is the DC voltage input end of step-down chip.En pin is the enable input of step-down chip, and when En pin is high level, step-down chip normally works, and when En pin is low level, step-down chip turns off and do not work.RT/CLK pin is the clock input signal pin of step-down chip.FB pin is the feedback input end of step-down chip.COMP pin is that the control circuit of step-down chip compensates pin position.GND pin is the ground connection of step-down chip.SW pin is the switch output pin position of step-down chip.TPAD (ThermalPad) pin is the ground connection of step-down chip.
In the utility model embodiment, step-down chip specifically includes but not limited to: TPS step-down chip, as TPS54360 step-down chip etc.POE transducer is docked with the USB interface of electronic equipment by USB interface.
Based on technique scheme, in the utility model embodiment, first voltage transitions can be the second voltage that USB interface is supported by voltage conversion circuit, thus make POE supply power mode can for having the power electronic equipment of USB interface, make POE supply power mode convenient, more general, there is generality, applicability, and the use of POE supply power mode can be promoted.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacements, improvement etc., all should be included within scope that the utility model protects.
Claims (9)
1. an active Ethernet POE transducer, it is characterized in that, described POE transducer specifically comprises: for input the voltage input interface of the first voltage, controller chip, for by the first voltage transitions be the second voltage voltage conversion circuit, be used for inputting the general-purpose serial bus USB interface of the second voltage, described first voltage is greater than described second voltage, and described second voltage is the voltage that described USB interface is supported;
Wherein, described voltage input interface and described controller chip are electrically connected, and described voltage conversion circuit and described controller chip are electrically connected, and described voltage conversion circuit and described USB interface are electrically connected.
2. POE transducer as claimed in claim 1, is characterized in that,
Described voltage conversion circuit specifically comprises: step-down chip, inductance, diode, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance; Wherein:
The first end ground connection of described first electric capacity, the second end is connected to the Vin pin of step-down chip; The first end of described second electric capacity is connected to the SW pin of step-down chip, and the second end is connected to the BOOT pin of step-down chip; The first end ground connection of described 3rd electric capacity, the second end is connected to the TPAD pin of step-down chip; The first end ground connection of described 4th electric capacity, the second end is connected with the 4th resistance; The first end ground connection of described 5th electric capacity, the second end is output; The first end ground connection of described 6th electric capacity, the second end is output;
The first end of described first resistance is connected to the Vin pin of step-down chip, and the second end is connected to the En pin of step-down chip; The first end ground connection of described second resistance, the second end is connected to the En pin of step-down chip; The first end ground connection of described 3rd resistance, the second end is connected to the RT/CLK pin of step-down chip; The first end of described 4th resistance is connected with described 4th electric capacity, and the second end is connected to the COMP pin of step-down chip; The first end ground connection of described 5th resistance, the second end is connected to the FB pin of step-down chip; The first end of described 6th resistance is connected to the FB pin of step-down chip, and the second end is output;
The first end of described diode is connected to the SW pin of step-down chip, the second end ground connection;
The first end of described inductance is connected to the SW pin of step-down chip, and the second end is output.
3. POE transducer as claimed in claim 2, is characterized in that,
Described step-down chip specifically comprises: communication power supply system TPS step-down chip.
4. POE transducer as claimed in claim 1, is characterized in that,
Described POE transducer is docked with the USB interface of electronic equipment by described USB interface.
5. POE transducer as claimed in claim 1, is characterized in that,
Described first voltage specifically comprises 48 volts, and described second voltage specifically comprises 5 volts.
6. POE transducer as claimed in claim 1, is characterized in that, described POE transducer is docked with the voltage output interface of feeder ear equipment PSE by described voltage input interface, receives the first voltage of input.
7. POE transducer as claimed in claim 6, it is characterized in that, described voltage input interface specifically comprises Registered Jack RJ45 network interface, and described voltage output interface specifically comprises RJ45 network interface.
8. POE transducer as claimed in claim 6, is characterized in that,
Described PSE is powered to described POE transducer by POE data wire, or described PSE is powered by POE transducer described in POE dead pair.
9. a voltage conversion circuit, be applied on the active Ethernet POE transducer as described in claim 1, any one of 3-9, it is characterized in that, described voltage conversion circuit comprises: step-down chip, inductance, diode, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance; Wherein:
The first end ground connection of described first electric capacity, the second end is connected to the Vin pin of step-down chip; The first end of described second electric capacity is connected to the SW pin of step-down chip, and the second end is connected to the BOOT pin of step-down chip; The first end ground connection of described 3rd electric capacity, the second end is connected to the TPAD pin of step-down chip; The first end ground connection of described 4th electric capacity, the second end is connected with the 4th resistance; The first end ground connection of described 5th electric capacity, the second end is output; The first end ground connection of described 6th electric capacity, the second end is output;
The first end of described first resistance is connected to the Vin pin of step-down chip, and the second end is connected to the En pin of step-down chip; The first end ground connection of described second resistance, the second end is connected to the En pin of step-down chip; The first end ground connection of described 3rd resistance, the second end is connected to the RT/CLK pin of step-down chip; The first end of described 4th resistance is connected with described 4th electric capacity, and the second end is connected to the COMP pin of step-down chip; The first end ground connection of described 5th resistance, the second end is connected to the FB pin of step-down chip; The first end of described 6th resistance is connected to the FB pin of step-down chip, and the second end is output;
The first end of described diode is connected to the SW pin of step-down chip, the second end ground connection;
The first end of described inductance is connected to the SW pin of step-down chip, and the second end is output.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520775242.8U CN205017209U (en) | 2015-10-08 | 2015-10-08 | POE converter and voltage conversion circuit |
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| CN201520775242.8U CN205017209U (en) | 2015-10-08 | 2015-10-08 | POE converter and voltage conversion circuit |
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| CN205017209U true CN205017209U (en) | 2016-02-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105565098A (en) * | 2016-03-06 | 2016-05-11 | 西继迅达（许昌）电梯有限公司 | Elevator display device and system |
| CN106329956A (en) * | 2016-10-21 | 2017-01-11 | 福建星海通信科技有限公司 | Vehicle input adaptive voltage-limiting protective circuit |
-
2015
- 2015-10-08 CN CN201520775242.8U patent/CN205017209U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105565098A (en) * | 2016-03-06 | 2016-05-11 | 西继迅达（许昌）电梯有限公司 | Elevator display device and system |
| CN106329956A (en) * | 2016-10-21 | 2017-01-11 | 福建星海通信科技有限公司 | Vehicle input adaptive voltage-limiting protective circuit |
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