CN103683482B - A kind of hot-swappable redundancy PD electric supply installation - Google Patents
A kind of hot-swappable redundancy PD electric supply installation Download PDFInfo
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Abstract
The equipment that the present invention relates to, for electrical domain, more specifically, relates to a kind of hot-swappable redundancy PD electric supply installation.It comprises adapter, also comprise PD power module, hot-swappable redundancy control circuit, commutation circuit, PD power module is used for being connected with the network switch, hot-swappable redundancy control circuit is connected with the voltage output end mouth of PD power module by hot-swappable interface, hot-swappable redundancy control circuit is also connected with commutation circuit by hot-swappable interface, is connected with load through commutation circuit.The voltage output end mouth of adapter is connected with commutation circuit, and commutation circuit is connected with load.The present invention efficiently utilizes communication power supply in the network switch, serves energy-conservation effect.The living space of power consumption equipment can be expanded, the clean energy resource of network communication can be made full use of again, namely can electrical energy saving, for user saves cost, the user demand of consumer product can be met again.
Description
Technical field
The equipment that the present invention relates to, for electrical domain, more specifically, relates to a kind of hot-swappable redundancy PD electric supply installation.
Background technology
The processor devices such as video acquisition box/decoder box/coding box are all generally adopt the adapter of external AC-DC to power, and adapter often volume is large, efficiency is low, generates heat high, not easily built-in, makes its power consumption many, not energy-conservation.And processor device is when mating with switch, in switch ,-48V communication power supply be can yet be regarded as a kind of clean available energy, is that power consumption equipment as video acquisition box provides a kind of supply power mode with the power supply in switch.But at POE (the Power Over Ethernet of reality, Power over Ethernet) in power supply, PSE (feeder ear equipment, Power Sourcing Equipment) and PD (receiving end equipment, Powered Device) the highest standard IEEE802.3at that will meet, this substandard maximum PD power output is 25.5W, and the power of actual power consumption equipment is when being greater than this value, suitable PD power supply is not just had to mate with PSE power supply, in view of highest standard, meet equipment electricity consumption requirement, PD and PSE scope of design must be limited, improve application cost so greatly, do not meet the cost requirement of user.
And under existing PD circuit module, when power consumption equipment power is greater than the 25.5w of standard-required, single PD power supply can cannot ensure that because of underpower power consumption equipment normally works.
Summary of the invention
The present invention, for overcoming at least one defect (deficiency) described in above-mentioned prior art, provides one to carry with easy for installation, can effectively utilize communication power supply in network exchange, plays the hot-swappable redundancy PD electric supply installation of energy-saving effect.
For solving the problems of the technologies described above, technical scheme of the present invention is as follows:
A kind of hot-swappable redundancy PD electric supply installation, comprise adapter, also comprise PD power module, hot-swappable redundancy control circuit, commutation circuit, PD power module is used for being connected with the network switch, hot-swappable redundancy control circuit is connected with the voltage output end mouth of PD power module by hot-swappable interface, hot-swappable redundancy control circuit is also connected with commutation circuit respectively by hot-swappable interface, and the voltage output end mouth of adapter is connected with commutation circuit, and commutation circuit is connected with load.
Compared with prior art, the beneficial effect of technical solution of the present invention is:
(1) the present invention adds hot-swappable redundant circuit and commutation circuit on the PD power module of prior art, utilize this hot-swappable redundant circuit and existing adapter jointly for video acquisition box, processor device such as coding box, decoder box etc. provide supply power mode flexibly, efficiently utilize communication power supply in the network switch, serve energy-conservation effect.The living space of power consumption equipment can be expanded, the clean energy resource of network communication can be made full use of again, namely can electrical energy saving, for user saves cost, the user demand of consumer product can be met again.
(2) hot-swappable redundant circuit of the present invention connects load and commutation circuit by hot-swappable interface, is easy to carry, and is convenient to connect and install, easy to use, is easy to promote.
(3) the present invention utilizes commutation circuit can do automatic switching between main power source adapter and auxiliary power supply PD power module, makes the supply power mode of various processor device more flexible, handled easily.
Accompanying drawing explanation
Fig. 1 is the Organization Chart of a kind of hot-swappable redundancy PD electric supply installation specific embodiment of the present invention.
Fig. 2 is the physical circuit figure of hot-swappable redundancy control circuit and commutation circuit in the present invention.
Fig. 3 is the Organization Chart of PD power module and hot-swappable redundancy control circuit in the present invention.
Fig. 4 is PD power module specific implementation circuit diagram in the present invention.
Fig. 5 is PD power module specific implementation circuit diagram in the present invention.
Embodiment
Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent;
In order to better the present embodiment is described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product;
To those skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable.
In describing the invention, it is to be appreciated that term " first ", " second " only for describing object, and can not be interpreted as the quantity of instruction or hint relative importance or implicit indicated technical characteristic.Thus, one or more these features can be expressed or impliedly be comprised to the feature of " first ", " second " of restriction.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also can be indirectly connected by intermediary, the connection of two element internals can be said.For the ordinary skill in the art, concrete condition above-mentioned term can be understood at concrete meaning of the present invention.
Below in conjunction with drawings and Examples, technical scheme of the present invention is described further.
Embodiment 1
As Fig. 1 is so-called, it is the Organization Chart of a kind of hot-swappable redundancy PD electric supply installation specific embodiment of the present invention.See Fig. 1, a kind of hot-swappable redundancy PD electric supply installation of this specific embodiment comprises adapter 1, PD power module 2, hot-swappable redundancy control circuit 3, commutation circuit 4, PD power module 2 is for being connected with the network switch, hot-swappable redundancy control circuit 3 is connected with the voltage output end mouth of PD power module 1 by hot-swappable interface, hot-swappable redundancy control circuit 3 is also connected with commutation circuit 4 by the voltage output end mouth of hot-swappable interface with commutation circuit 4 Payload attach fitting 1, and commutation circuit 4 is connected with load 5.
In the present embodiment, hot-swappable redundancy control circuit 3 and adapter 1 are all powered to load 5 by the switching of commutation circuit 4.
The power consumption equipments such as video acquisition box generally adopt AC-DC(interchange to turn direct-current switch power supply) power supply, the present invention proposes by the communication power supply in the network switch is that the equipment such as video acquisition box are powered, PD power supply is exactly such power supply, when AC-DC supply voltage exists, by commutation circuit 4, can only power by AC-DC supply voltage, if when having the network switch, in order to energy-conservation can selection adopts PD power module 2 to power, such AC-DC main power source and auxiliary power supply PD power supply can utilize commutation circuit 4 to do automatic switching.This makes in the middle of practical application, the signal processor power consumption equipments such as such as collecting cassette/coding box/decoder box, its supply power mode adopts more effective ways, make its supply power mode more flexible, handled easily, changes traditional supply power mode, in conjunction with on traditional supply power mode basis, for these processor devices have increased the supply power mode by the network switch newly, specific works process is:
When adapter 1 is powered, the network switch does not need to provide power supply;
When adapter 1 does not work, through commutation circuit 4, communication power supply in the network switch supply energy to PD power module 2, PD power module 2 work after output voltage impel commutation circuit 4 conducting and make the output voltage of PD power module 2 can be added in power consumption equipment and load 5;
This programme is video acquisition box, processor device such as coding box, decoder box etc. provides supply power mode flexibly, efficiently utilizes communication power supply in the network switch, serves energy-conservation effect.The living space of power consumption equipment can be expanded, the clean energy resource of network communication can be made full use of again, namely can electrical energy saving, for user saves cost, the user demand of consumer product can be met again.And the hot-swappable redundancy control circuit 3 in the present embodiment is with hot-swappable interface, PD power module 1 and load 5 can be connected to easily by hot-swappable interface, realizes portable mounting means.
In specific implementation process, PD power module 1 and hot-swappable redundancy control circuit 3 correspondence arrange at least one, and at least one hot-swappable redundancy control circuit is connected to commutation circuit by hot-swappable interface.When the power of power consumption equipment increases, as increased to more than 25.5W, can be powered for load 5 by multiple PD power module 1 simultaneously, so make the PD power module 1 with redundancy and hot-swappable function also can redundancy of effort, realize PD Power supply when power consumption equipment power is greater than 25.5w, meet the normal electricity consumption of high-powered processor, ensure that the stability of system.As shown in Figure 1, be provided with two PD power modules 1 to power for load 5, accordingly, hot-swappable redundancy control circuit 3 also correspondence arranges two, two PD power modules 1 are connected respectively two hot-swappable redundancy control circuits 3, two hot-swappable redundancy control circuits 3 are connected respectively in commutation circuit 4
In specific implementation process, hot-swappable redundancy control circuit can adopt TPS2412 chip and N-MOS pipe to realize, concrete circuit diagram as shown in Figure 2:
The grid of N-MOS pipe MOS4, source electrode, drain electrode are held with gate pole GATE, A of TPS2412 chip U81 respectively, C holds and is connected, the BYP end of TPS2412 chip U81 is connected to the source electrode of N-MOS pipe MOS4 by an electric capacity C791, the source electrode of N-MOS pipe MOS4 is connected to the voltage output end mouth (+12V1-POE) of PD power module by hot-swappable interface, VDD and the C end of TPS2412 chip U81 is attempted by the drain electrode formation redundant circuit of N-MOS pipe MOS4 and is connected to commutation circuit by hot-swappable interface.When the pressure drop between the A of TPS2412 chip U81 holds and C holds exceedes certain voltage as 10 millivolts, the GATE of TPS2412 chip U81 exports high level and drives outside N-MOS pipe MOS4, and PD power module 2 output voltage is powered to load 5.In like manner, another the hot-swappable redundant circuit described in Fig. 2 includes TPS2412 chip U84 and N-MOS pipe MOS5, and its connected mode is identical with above-mentioned, again repeats no more.
In specific implementation process, as shown in Figure 3, PD power module comprises the bridge rectifier A connected in turn, PD power grade testing circuit B, PWM circuit C, high frequency power conversion and transformer circuit E, output rectification circuit F, bridge rectifier A is used for interconnection network switch, network exchange electromechanical source is PSE interface direct voltage after bridge rectifier A, this PSE interface direct voltage is connected to PWM circuit C, the output port of output rectification circuit F is connected to hot-swappable redundant circuit 3 as voltage output end mouth, the output port of output rectification circuit F is also connected with output signal negative-feedback circuit D, output signal negative-feedback circuit D is connected to PWM circuit C, PWM circuit C is also connected with chip power supply circuit.
When network exchange electromechanical source is PSE interface direct voltage after this bridge rectifier A, this d. c. voltage signal passes through a resistance feedback to control IC, to obtain POE detection signal, now PWM circuit C starts working, PSE interface direct voltage is by copped wave, this energy passes to secondary end through high frequency transformer, passes to secondary energy grade and is judged, to meet standard IEEE 802.3at. by PD power-sensing circuit B.
As shown in Figures 4 and 5, be the physical circuit figure of PD power module of the present invention and hot-swappable redundancy control circuit.In physical circuit of the present invention, control IC(U61) PSE signal is differentiated, complete PD power stage simultaneously and judge, finally PSE voltage chopping to be become after high-frequency direct-current Energy transmission to secondary.
Network switch supply voltage is converted to high frequency chopping direct voltage after bridge rectifier A, this high frequency chopping direct voltage is added on the armature winding of high frequency power conversion and transformer circuit E, when high frequency power switch conduction, load on energy on armature winding and be all transferred to output powering load by secondary winding and to the inductive circuit F energy storage exported, give outputting inductance energy storage after the output rectification circuit F rectification of now secondary end and load energy is provided.When high frequency power pipe ends, load provides energy by outputting inductance circuit F energy storage, and synchronous freewheeling pipe and outputting inductance form closed-loop path for load provides energy, and the high frequency chopping direct voltage of primary side is added in main metal-oxide-semiconductor two ends.
During concrete enforcement, the switching frequency of control chip U61 can be brought up to more than 245KHz, the high power density of PD power module 1 is embodied, as the PD power supply of maximum exportable 25W, the product of small-sized high-power density can be designed, be easy to carry, be convenient to hot-swappable, save usage space.
In specific implementation process, the physical circuit of commutation circuit as shown in Figure 2, described commutation circuit comprises power schottky rectifier U57, P-MOS manages, resistance R671, resistance 694, electric capacity 743, electric capacity 772 and electric capacity 773, the voltage output end mouth (VD12.0_DC-IN shown in Fig. 2) of adapter connects the 1st end of power schottky rectifier, 1st end of power schottky rectifier also distinguishes the grid of contact resistance R671 one end and P-MOS pipe, resistance R671 other end ground connection, the drain electrode of P-MOS pipe is connected to the 3rd end of power schottky rectifier, 4th end of power schottky rectifier connects load (VD12.0_0 shown in Fig. 2), the source electrode of P-MOS pipe is connected to hot-swappable redundancy control circuit, between the drain electrode being connected in parallel on P-MOS pipe after resistance 694 and electric smelting C743 connect and source electrode, electric capacity C773 is connected in parallel between the 1st end of power schottky rectifier and the 3rd end, between the grid that electric capacity C772 is connected in parallel on P-MOS pipe and source electrode.
When the voltage of main power source AC-DC exports, make the G pole (grid) of P-MOS pipe be in high level and by, the output voltage of the auxiliary power supply PD power module be connected with the S pole (source electrode) of P-MOS can not directly for the power consumption equipments such as video acquisition box be powered, and when the output voltage of main power source AC-DC is lower than 11.6V, the G pole of P-MOS pipe makes P-MOS conducting lower than S level, P-MOS pipe is as switch, and the threshold values in grid source is-0.4V, and the voltage difference when grid source will make DS conducting for-0.4V.Such PD power supply and AC-DC electric power output voltage realize automatically switching.This technology is high performance-price ratio succinctly.
When specific implementation, power schottky rectifier U57 can adopt STPS640CB chip.
The corresponding same or analogous parts of same or analogous label;
Describe in accompanying drawing position relationship for only for exemplary illustration, the restriction to this patent can not be interpreted as;
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection range that all should be included in the claims in the present invention.
Claims (4)
1. a hot-swappable redundancy PD electric supply installation, comprise adapter, it is characterized in that, also comprise PD power module, hot-swappable redundancy control circuit, commutation circuit, PD power module is used for being connected with the network switch, and hot-swappable redundancy control circuit is connected with the voltage output end mouth of PD power module by hot-swappable interface, and hot-swappable redundancy control circuit is also connected with commutation circuit by hot-swappable interface, the voltage output end mouth of adapter is connected with commutation circuit, and commutation circuit is connected with load;
Described commutation circuit comprises power schottky rectifier, P-MOS manages, resistance R671, resistance 694, electric capacity 743, electric capacity 772 and electric capacity 773, power schottky rectifier is STPS640CB chip, the voltage output end mouth of adapter connects the 1st end of power schottky rectifier, 1st end of power schottky rectifier also distinguishes the grid of contact resistance R671 one end and P-MOS pipe, resistance R671 other end ground connection, the drain electrode of P-MOS pipe is connected to the 3rd end of power schottky rectifier, 4th end of power schottky rectifier connects load, the source electrode of P-MOS pipe is connected to hot-swappable redundancy control circuit, between the drain electrode being connected in parallel on P-MOS pipe after resistance 694 and electric smelting C743 connect and source electrode, electric capacity C773 is connected in parallel between the 1st end of power schottky rectifier and the 3rd end, between the grid that electric capacity C772 is connected in parallel on P-MOS pipe and source electrode.
2. hot-swappable redundancy PD electric supply installation according to claim 1, it is characterized in that, described hot-swappable redundancy control circuit comprises TPS2412 chip and N-MOS pipe, the grid of N-MOS pipe, source electrode, drain electrode respectively with the gate pole of TPS2412 chip, A holds, C holds connection, the BYP end of TPS2412 chip is connected to the source electrode of N-MOS pipe by an electric capacity, the source electrode of N-MOS pipe is connected to the voltage output end mouth of PD power module by hot-swappable interface, VDD and the C end of TPS2412 is attempted by the drain electrode formation redundant circuit of N-MOS pipe and is connected to load and commutation circuit by hot-swappable interface.
3. hot-swappable redundancy PD electric supply installation according to claim 1, it is characterized in that, described PD power module and hot-swappable redundancy control circuit correspondence arrange at least one, and at least one hot-swappable redundancy control circuit is connected to load and commutation circuit by hot-swappable interface.
4. the hot-swappable redundancy PD electric supply installation according to any one of claim 1-3, it is characterized in that, described PD power module comprises the bridge rectifier connected in turn, PD power grade testing circuit, PWM circuit, high frequency power conversion and transformer circuit, output rectification circuit, bridge rectifier is used for interconnection network switch, network exchange electromechanical source is PSE interface direct voltage after bridge rectifier, this PSE interface direct voltage is connected to PWM circuit, the output port of output rectification circuit is connected to hot-swappable redundancy control circuit as voltage output end mouth, the output port of output rectification circuit is also connected with output signal negative-feedback circuit, output signal negative-feedback circuit is connected to PWM circuit, PWM circuit is also connected with chip power supply circuit.
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