CN212086194U - Control circuit of photoelectric isolation protection POE module - Google Patents
Control circuit of photoelectric isolation protection POE module Download PDFInfo
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- CN212086194U CN212086194U CN202021014170.2U CN202021014170U CN212086194U CN 212086194 U CN212086194 U CN 212086194U CN 202021014170 U CN202021014170 U CN 202021014170U CN 212086194 U CN212086194 U CN 212086194U
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Abstract
The utility model provides a control circuit of optoelectronic isolation protection POE module, including input interface, power supply circuit module and output interface, input interface is used for receiving the voltage signal of outside POE switch network transformer output and exports the power supply circuit module input, output interface is used for receiving the direct current voltage of power supply circuit module output is the POE powered device power supply, the power supply circuit module is including the one-level rectifier circuit unit, power management chip, switch circuit unit, isolation transformer, second grade rectifier circuit unit and the optoelectronic isolation circuit unit that set gradually. The utility model provides a control circuit of optoelectronic isolation protection POE module has isolation transformer and protection circuit, and the circuit integrated level is high, and the dependable performance is stable, and it is convenient to maintain.
Description
Technical Field
The utility model relates to a POE module technical field, more specifically the utility model relates to a control circuit of optoelectronic isolation protection POE module.
Background
The POE power supply module refers to an existing ethernet CAT-5 wiring infrastructure, and supplies power while transmitting data by means of a conventional ethernet cable without any change, so that the cable can provide a dc power supply capability for ethernet terminal devices such as an IP telephone, a wireless local area network access point AP, a secure network camera, and other IP-based terminals while transmitting data signals for such devices.
The control circuit structural design of usual photoelectric isolation protection POE module is comparatively complicated, adopts a plurality of circuit combinations to accomplish mostly, leads to the circuit integrated level lower like this, and the reliability is relatively poor, and the system is unstable, and the cost is too high and lose the competitiveness.
SUMMERY OF THE UTILITY MODEL
The utility model provides a control circuit of photoelectric isolation protection POE module aims at solving among the prior art too much the control circuit of photoelectric isolation protection POE module and leads to the integrated level low, and the reliability is relatively poor, the unstable and too high problem of cost of system. In order to overcome above problem, the utility model provides an integrated level is high, and the security performance is good, the lower photoelectric isolation protection POE module's of later maintenance cost control circuit.
In order to realize the technical purpose, the technical proposal of the utility model is that:
the utility model discloses a control circuit of photoelectric isolation protection POE module, including input interface, power supply circuit module and output interface, input interface is used for receiving the voltage signal of outside POE switch network transformer output and exports the power supply circuit module input, output interface is used for receiving the direct current voltage of power supply circuit module output is the POE powered device power supply, the power supply circuit module is including the one-level rectifier circuit unit, power management chip, switch circuit unit, isolation transformer, secondary rectifier circuit unit and the photoelectric isolation circuit unit that set gradually.
Further, the secondary rectification circuit unit comprises a first rectifier and a second rectifier, a common end of a pin 1 and a pin 2 of the first rectifier is connected with a common end of a pin 9 and a pin 10 of the isolation transformer secondary coil, a common end of a pin 1 and a pin 2 of the second rectifier is connected with a common end of a pin 6 and a pin 7 of the isolation transformer secondary coil, a common end of a pin 3 of the first rectifier and a pin 3 of the second rectifier is connected with one end of an inductor, and the other end of the inductor is connected with the output interface pin 3 and the pin 4.
Further, the secondary rectification circuit unit comprises first to fourth resistors and first to fifth capacitors, one end of the first resistor and one end of the second resistor after being connected in parallel is connected with the common end of a pin 1 and a pin 2 of the first rectifier through the first capacitor, and the other end of the first resistor and the second resistor after being connected in parallel is connected with a pin 3 of the first rectifier; after the third resistor and the fourth resistor are connected in parallel, one end of the third resistor and the fourth resistor is connected with the common end of a pin 1 and a pin 2 of the second rectifier through the second capacitor, after the third resistor and the fourth resistor are connected in parallel, the other end of the third resistor and the fourth resistor are connected with a pin 3 of the second rectifier, the third capacitor, the fourth capacitor and the fifth capacitor are connected with a common end in parallel, the pin 3 of the first rectifier is connected with the common end of the pin 3 of the second rectifier, and the third capacitor, the fourth capacitor and the fifth capacitor are connected with the other common end in parallel and grounded.
Further, the first rectifier and the second rectifier are both MBRD6100 CT.
Further, the model of the power management chip is TPS 23753.
The utility model provides a control circuit of photoelectric isolation protection POE module, its beneficial effect lies in:
the utility model provides a control circuit of optoelectronic isolation protection POE module has isolation transformer and protection circuit, and the circuit integrated level is high, and the dependable performance is stable, and it is convenient to maintain.
Drawings
Fig. 1 is a schematic diagram of a control circuit structure of a POE module according to an embodiment of the present invention;
fig. 2 is the utility model discloses a partial structure schematic diagram of optoelectronic isolation protection POE module.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The detailed description of the embodiments of the present invention will be made with reference to fig. 1 and 2, but the present invention is not limited to the technical solutions.
The embodiment of the utility model provides a control circuit of optoelectronic isolation protection POE module, including input interface 10, power supply circuit module 20 and output interface 30, input interface 10 is used for receiving the voltage signal of outside POE switch network transformer output and exports power supply circuit module 20 input, output interface 30 is used for receiving the direct current voltage of power supply circuit module 20 output is the POE powered device power supply, power supply circuit module 20 is including the one-level rectifier circuit unit 201, power management chip 202, switch circuit unit 203, isolation transformer 204, second grade rectifier circuit unit 205 and the optoelectronic isolation circuit unit 206 that set gradually.
The secondary rectifying circuit unit 205 comprises a first rectifier D6 and a second rectifier D7, a common end of a pin 1 and a pin 2 of the first rectifier D6 is connected with a common end of a pin 9 and a pin 10 of the secondary coil of the isolation transformer 204, a common end of a pin 1 and a pin 2 of the second rectifier D7 is connected with a common end of a pin 6 and a pin 7 of the secondary coil of the isolation transformer 204, a common end of a pin 3 of the first rectifier D6 and a pin 3 of the second rectifier D7 is connected with one end of an inductor L2, and the other end of the inductor L2 is connected with a pin 3 and a pin 4 of the output interface 30.
The secondary rectification circuit unit 205 comprises first to fourth resistors and first to fifth capacitors, one end of the first resistor R18 and the second resistor R19 is connected with the common end of a pin 1 and a pin 2 of the first rectifier D6 through a first capacitor C17 after being connected in parallel, and the other end of the first resistor R18 and the second resistor R19 are connected with a pin 3 of the first rectifier D6 after being connected in parallel; one end of the third resistor R16 and one end of the fourth resistor R17 are connected with the common end of a pin 1 and a pin 2 of the second rectifier D7 through the second capacitor C16 after being connected in parallel, the other end of the third resistor R16 and the other end of the fourth resistor R17 are connected with a pin 3 of the second rectifier D7 after being connected in parallel, the third capacitor C20, the fourth capacitor C21 and the fifth capacitor C22 are connected with a common end in parallel and connected with the common end of the pin 3 of the first rectifier D6 and the common end of the pin 3 of the second rectifier D7, and the third capacitor C20, the fourth capacitor C21 and the fifth capacitor C22 are connected with the other common end in parallel and grounded.
The first rectifier D6 and the second rectifier D7 are schottky barrier rectifiers, model number MBRD6100 CT.
The power management chip 202 is model number TPS 23753.
The utility model provides a control circuit of photoelectric isolation protection POE module, its beneficial effect lies in:
the utility model provides a control circuit of optoelectronic isolation protection POE module has isolation transformer and protection circuit, and the circuit integrated level is high, and the dependable performance is stable, and it is convenient to maintain.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a control circuit of optoelectronic isolation protection POE module, includes input interface, power supply circuit module and output interface, the input interface is used for receiving the voltage signal of outside POE switch network transformer output and exports the power supply circuit module input, the output interface is used for receiving the direct current voltage of power supply circuit module output and for POE powered device power supply, a serial communication port, the power supply circuit module is including the one-level rectifier circuit unit, power management chip, switch circuit unit, isolation transformer, second grade rectifier circuit unit and the optoelectronic isolation circuit unit that set gradually.
2. The control circuit of claim 1, wherein the secondary rectification circuit unit comprises a first rectifier and a second rectifier, a common terminal of pin 1 and pin 2 of the first rectifier is connected to a common terminal of pin 9 and pin 10 of the isolation transformer secondary coil, a common terminal of pin 1 and pin 2 of the second rectifier is connected to a common terminal of pin 6 and pin 7 of the isolation transformer secondary coil, a common terminal of pin 3 of the first rectifier and pin 3 of the second rectifier is connected to one end of an inductor, and the other end of the inductor is connected to the output interface pin 3 and pin 4.
3. The control circuit according to claim 2, wherein the secondary rectification circuit unit comprises first to fourth resistors and first to fifth capacitors, one end of the first resistor and the second resistor is connected with a common terminal of a pin 1 and a pin 2 of the first rectifier through the first capacitor after being connected in parallel, and the other end of the first resistor and the second resistor are connected with a pin 3 of the first rectifier after being connected in parallel; after the third resistor and the fourth resistor are connected in parallel, one end of the third resistor and the fourth resistor is connected with the common end of a pin 1 and a pin 2 of the second rectifier through the second capacitor, after the third resistor and the fourth resistor are connected in parallel, the other end of the third resistor and the fourth resistor are connected with a pin 3 of the second rectifier, the third capacitor, the fourth capacitor and the fifth capacitor are connected with a common end in parallel, the pin 3 of the first rectifier is connected with the common end of the pin 3 of the second rectifier, and the third capacitor, the fourth capacitor and the fifth capacitor are connected with the other common end in parallel and grounded.
4. The control circuit of claim 2 or 3, wherein the first and second rectifiers are each MBRD6100 CT.
5. The control circuit of claim 1, wherein the power management chip model is TPS 23753.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021014170.2U CN212086194U (en) | 2020-06-05 | 2020-06-05 | Control circuit of photoelectric isolation protection POE module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021014170.2U CN212086194U (en) | 2020-06-05 | 2020-06-05 | Control circuit of photoelectric isolation protection POE module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212086194U true CN212086194U (en) | 2020-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021014170.2U Active CN212086194U (en) | 2020-06-05 | 2020-06-05 | Control circuit of photoelectric isolation protection POE module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212086194U (en) |
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2020
- 2020-06-05 CN CN202021014170.2U patent/CN212086194U/en active Active
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