CN203596620U - Energy feedback type current-sharing interface circuit comprising coupling inductor - Google Patents
Energy feedback type current-sharing interface circuit comprising coupling inductor Download PDFInfo
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- CN203596620U CN203596620U CN201320529233.1U CN201320529233U CN203596620U CN 203596620 U CN203596620 U CN 203596620U CN 201320529233 U CN201320529233 U CN 201320529233U CN 203596620 U CN203596620 U CN 203596620U
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Abstract
The utility model discloses an energy feedback type current-sharing interface circuit comprising a coupling inductor, and the circuit consists of a power main loop, a control loop, and an auxiliary power supply. The power main loop consists of n complete channel circuits. The control loop consists of n current control circuits and one current-sharing reference generator. The current control circuit J (J is a positive integer from one to n), which is matched with the power main loop, is provided with a port vsenj, a port vgj, a port vsj, a port vgaj, and a port vcsrefj. The current-sharing reference generator is provided with a port vsenj and a port vcsref. The auxiliary power supply is provided with a port Vij and a port Gnd. According to the utility model, an auxiliary circuit comprising the coupling inductor is used for collecting the excess energy in the current-sharing interface circuit and feeds the excess energy to a load, thereby improving the utilization rate of the excess energy in the current-sharing interface circuit, and improving the efficiency of a complex parallel-connection direct-current power system.
Description
Technical field
The utility model relates to a kind of current sharing interface circuit, is applied to the parallel system being made up of the DC power supply of identical or different specification, especially a kind of containing coupling inductance can present formula current sharing interface circuit.
Background technology
Parallel connection direct power-supply system because of its stability, reliability high, the advantage such as capacity extension is convenient, flexible, and use occasion is unrestricted, has been widely used in the fields such as communication, computer, electric power at present.Complicated parallel connection direct power-supply system is made up of the DC power supply of multiple identical or different specifications, can solve at low cost the equal flow problem between the DC power supply of identical or different specification by introducing a current sharing interface circuit, the reliability of whole system is further enhanced.Existing current sharing interface circuit is energy consumption formula mostly, and the excess energy in current sharing interface circuit (inputting energy and the difference of exporting energy) is completely consumed.And the output characteristic difference of the DC power supply of composition parallel system is larger, the excess energy in current sharing interface circuit is just more, and the energy being slatterned by energy consumption formula current sharing interface circuit is also just larger.Therefore, in complicated parallel connection direct power-supply system, the efficiency of energy consumption formula current sharing interface circuit is performed poor.
Summary of the invention
The purpose of this utility model is to solve energy consumption formula current sharing interface circuit to utilize problem to zero of excess energy, improves the efficiency of whole complicated parallel connection direct power-supply system.
The utility model solves the technical scheme that its technical problem adopts: a kind of formula current sharing interface circuit of presenting containing coupling inductance is made up of power major loop, control loop, accessory power supply 3 parts.
Described power major loop (is that complete channels circuit 1 to complete channels circuit n) forms by n complete channel circuit, it is characterized in that: complete channels circuit j(j=1, ..., n) comprise input capacitance Cij, inductance L j, N-MOS is responsible for Sj, N-MOS auxiliary tube Saj, auxiliary capacitor Caj, coupling inductance Laj and Lbj, diode Dj, booster diode Daj, output capacitance Coj, DC power supply Vij(j=1, ..., n) anode is connected with one end of input capacitance Cij and one end of inductance L j, the other end of inductance L j is connected with the anode of diode Dj and the drain electrode of N-MOS supervisor Sj, the negative electrode of diode Dj is connected with one end of coupling inductance Laj and one end of auxiliary capacitor Caj, the other end of coupling inductance Laj is connected with the drain electrode of N-MOS auxiliary tube Saj, N-MOS supervisor's source electrode of Sj and the other end of auxiliary capacitor Caj, the source electrode of N-MOS auxiliary tube Saj, one end of coupling inductance Lbj (with the other end of described coupling inductance Laj be Same Name of Ends relation), one end of output capacitance Coj, one end of the anode of output voltage V o and load R is connected, the other end (being Same Name of Ends relation with one end of described coupling inductance Laj) of coupling inductance Lbj is connected with the negative electrode of booster diode Daj, the negative terminal of the anode of booster diode Daj and DC power supply Vij, the other end of input capacitance Cij, the other end of output capacitance Coj, the other end of the negative terminal of output voltage V o and load R is connected, the contact of the contact of coupling inductance Lbj and booster diode Daj and coupling inductance Laj and diode Dj is Same Name of Ends relation,
Described control loop (is that current control circuit 1 to n) He 1 current-sharing reference generator of current control circuit forms by n current control circuit, described current control circuit j(j=1, ..., n) have port vsenj, port vgj, port vsj, port vgaj, port vcsrefj, described current-sharing reference generator has port vsenj and port vcsref, it is characterized in that: described current control circuit j(j=1, ..., n) port vsenj receives the detection signal of the current i Lj of described inductance L j, the port vgj of current control circuit j is connected with the gate pole of described N-MOS supervisor Sj, the port vsj of current control circuit j is connected with N-MOS supervisor's source electrode of Sj and the source electrode of N-MOS auxiliary tube Saj, the port vgaj of current control circuit j is connected with the gate pole of described N-MOS auxiliary tube Saj, the port vcsrefj of current control circuit j is connected with the port vcsref of described current-sharing reference generator, the port vsenj(j=1 of current-sharing reference generator, ..., n) receive the detection signal of the current i Lj of described inductance L j,
Described accessory power supply can provide required operating voltage for described control loop, have port Vij(j=1, ..., n) with port Gnd, it is characterized in that: the port Vij of described accessory power supply is connected with the anode of DC power supply Vij, the port Gnd of accessory power supply is connected with the negative terminal of DC power supply Vij.
Further, described current control circuit j(j=1, ..., n) formed by current control unit and metal-oxide-semiconductor driver element, it is characterized in that: described current control unit can drive the ON/OFF of instruction vgsj and N-MOS auxiliary tube Saj to drive instruction vgsaj according to the ON/OFF of the information output N-MOS supervisor Sj of the information of the port vsenj of current control circuit j and port vcsrefj
Described metal-oxide-semiconductor driver element can drive the ON/OFF of instruction vgsj and N-MOS auxiliary tube Saj to drive instruction vgsaj to convert to by port vgj, the port vsj of described current control circuit j and the differential driving signal of port vgaj output the ON/OFF of described N-MOS supervisor Sj.
Further, described accessory power supply is made up of the DC-DC converter of n diode (being that diode Db1 is to diode Dbn) and 1 many output of single input, it is characterized in that: described diode Db1 is connected to diode Dbn common cathode and with the positive input terminal of described single input DC-DC converter of exporting more, described diode Dbj(j=1, ..., n) anode is connected with the port Vij of described accessory power supply, and the negative input end of DC-DC converter and the port Gnd of described accessory power supply of the many outputs of described single input are connected;
Described current-sharing reference generator by amplifier G1 to amplifier Gn, the minimum value circuit of many inputs, adder G and reference voltage source G composition, it is characterized in that: described amplifier Gj(j=1, ..., n) input is connected with the port vsenj of described current-sharing reference generator, the output of amplifier Gj is connected with the input vj of the minimum value circuit of described many inputs, the output of minimum value circuit and an input of adder G of many inputs are connected, the output of reference voltage source G is connected with another input of adder G, the output of adder G is connected with the port vcsref of described current-sharing reference generator,
Described current control circuit j(j=1, ..., n) current control unit is by amplifier j, adder j, saw-toothed wave generator 1j, saw-toothed wave generator 2j, reference voltage source j, comparator 1j, comparator 2j, twitter circuit 1j and the twitter circuit 2j composition that disappears disappear, it is characterized in that: the input of described amplifier j is connected with the port vsenj of described current control circuit j, the output of amplifier j is connected with the inverting input of comparator 1j, an input of adder j is connected with the port vcsrefj of described current control circuit j, another input of adder j is connected with the output of saw-toothed wave generator 1j, the output of adder j is connected with the normal phase input end of comparator 1j, the output of comparator 1j is connected with the input of the twitter circuit 1j that disappears, the ON/OFF that the twitter circuit 1j that disappears exports described N-MOS supervisor Sj drives instruction vgsj, the normal phase input end of comparator 2j is connected with the output of saw-toothed wave generator 2j, the inverting input of comparator 2j is connected with the output of reference voltage source j, the output of comparator 2j is connected with the input of the twitter circuit 2j that disappears, the ON/OFF that the twitter circuit 2j that disappears exports described N-MOS auxiliary tube Saj drives instruction vgsaj.(effect of the twitter circuit 1j that disappears is to eliminate because the reasons such as interference cause the ON/OFF of N-MOS supervisor Sj and drives instruction vgsj that the phenomenon of shaking, the stability that strengthens system occur, and the effect of the twitter circuit 2j that disappears is to eliminate because the reasons such as interference cause the ON/OFF of N-MOS auxiliary tube Saj and drives instruction vgsaj that the phenomenon of shaking, the stability that strengthens system occur.）
Technical conceive of the present utility model is: the improved efficiency that realizes whole parallel connection direct power-supply system by improving the utilance of excess energy in current sharing interface circuit.Therefore, on the basis of existing energy consumption formula current sharing interface circuit, propose containing coupling inductance can present formula current sharing interface circuit scheme, adopt the auxiliary circuit being formed by auxiliary capacitor Caj, booster diode Daj, N-MOS auxiliary tube Saj, coupling inductance Laj and Lbj collect excess energy in current sharing interface circuit and by these unnecessary energy feedbacks to load.
The beneficial effects of the utility model are mainly manifested in: in complicated parallel connection direct power-supply system, use containing coupling inductance can present formula current sharing interface circuit, in system the DC power supply of identical or different specification can low cost, high efficiency, realize parallel current-sharing to high reliability.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the utility model embodiment.
Fig. 2 is the current control circuit j(j=1 of the utility model embodiment ..., functional block diagram n).
Fig. 3 is the circuit diagram of the accessory power supply of the utility model embodiment.
Fig. 4 is the circuit diagram of the current-sharing reference generator of the utility model embodiment.
Fig. 5 is the current control circuit j(j=1 of the utility model embodiment ..., the circuit diagram of current control unit n).
Fig. 6 is inductance L j(j=1 ..., n) and all oscillogram of the complete channels circuit j of the utility model embodiment in the time of switch working state in the situation in current continuity state of coupling inductance Laj and Lbj.
Fig. 7 is inductance L j(j=1 ..., the n) oscillogram of the complete channels circuit j of the utility model embodiment in the time of normal open operating state in the situation in current continuity state.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Embodiment
With reference to figure 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, embodiment is made up of power major loop, control loop, accessory power supply 3 parts.
As shown in Figure 1, the power major loop of embodiment is made up of to complete channels circuit n complete channels circuit 1.The complete channels circuit j(j=1 of embodiment ..., n) comprise input capacitance Cij, inductance L j, N-MOS is responsible for Sj, N-MOS auxiliary tube Saj, auxiliary capacitor Caj, coupling inductance Laj and Lbj, diode Dj, booster diode Daj, output capacitance Coj, DC power supply Vij(j=1, ..., n) anode is connected with one end of input capacitance Cij and one end of inductance L j, the other end of inductance L j is connected with the anode of diode Dj and the drain electrode of N-MOS supervisor Sj, the negative electrode of diode Dj is connected with one end of coupling inductance Laj and one end of auxiliary capacitor Caj, and the other end of coupling inductance Laj is connected with the drain electrode of N-MOS auxiliary tube Saj, N-MOS supervisor's source electrode of Sj and the other end of auxiliary capacitor Caj, the source electrode of N-MOS auxiliary tube Saj, one end of coupling inductance Lbj (with the other end of described coupling inductance Laj be Same Name of Ends relation), one end of output capacitance Coj, one end of the anode of output voltage V o and load R is connected, and the other end (being Same Name of Ends relation with one end of described coupling inductance Laj) of coupling inductance Lbj is connected with the negative electrode of booster diode Daj, the negative terminal of the anode of booster diode Daj and DC power supply Vij, the other end of input capacitance Cij, the other end of output capacitance Coj, the other end of the negative terminal of output voltage V o and load R is connected, and the contact of the contact of coupling inductance Lbj and booster diode Daj and coupling inductance Laj and diode Dj is Same Name of Ends relation.
As shown in Figure 1, the control loop of embodiment is made up of to current control circuit n and current-sharing reference generator current control circuit 1.The current control circuit j(j=1 of embodiment ..., n) have port vsenj, port vgj, port vsj, port vgaj, port vcsrefj, the current-sharing reference generator of embodiment has port vsenj and port vcsref.The port vsenj of the current control circuit j of embodiment receives the detection signal of the current i Lj of described inductance L j, the port vgj of the current control circuit j of embodiment is connected with the gate pole of described N-MOS supervisor Sj, the port vsj of the current control circuit j of embodiment is connected with N-MOS supervisor's source electrode of Sj and the source electrode of N-MOS auxiliary tube Saj, the port vgaj of the current control circuit j of embodiment is connected with the gate pole of described N-MOS auxiliary tube Saj, the port vcsrefj of the current control circuit j of embodiment is connected with the port vcsref of the current-sharing reference generator of embodiment, the port vsenj of the current-sharing reference generator of embodiment receives the detection signal of the current i Lj of described inductance L j.
As shown in Figure 1, the accessory power supply of embodiment can provide required operating voltage for the control loop of embodiment, has port Vij(j=1 ..., n) with port Gnd.The port Vij of the accessory power supply of embodiment is connected with the anode of DC power supply Vij, and the port Gnd of the accessory power supply of embodiment is connected with the negative terminal of DC power supply Vij.
As shown in Figure 2, the current control circuit j(j=1 of embodiment ..., n) formed by current control unit and metal-oxide-semiconductor driver element.The current control unit of embodiment can drive the ON/OFF of instruction vgsj and N-MOS auxiliary tube Saj to drive instruction vgsaj according to the ON/OFF of the information output N-MOS supervisor Sj of the information of the port vsenj of current control circuit j and port vcsrefj.The metal-oxide-semiconductor driver element of embodiment can drive the ON/OFF of instruction vgsj and N-MOS auxiliary tube Saj to drive instruction vgsaj to convert to by port vgj, the port vsj of current control circuit j and the differential driving signal of port vgaj output the ON/OFF of described N-MOS supervisor Sj.
As shown in Figure 3, the DC-DC converter that the accessory power supply of embodiment is exported to diode Dbn and singly input by diode Db1 more form, diode Db1 is connected to diode Dbn common cathode and with the positive input terminal of single input DC-DC converter of exporting more, diode Dbj(j=1, ..., n) anode is connected with the port Vij of the accessory power supply of embodiment, and the negative input end of DC-DC converter of the many outputs of single input and the port Gnd of the accessory power supply of embodiment are connected.
As shown in Figure 4, the current-sharing reference generator of embodiment by amplifier G1 to amplifier Gn, the minimum value circuit of many inputs, adder G and reference voltage source G composition, amplifier Gj(j=1, ..., n) input is connected with the port vsenj of the current-sharing reference generator of embodiment, the output of amplifier Gj is connected with the input vj of the minimum value circuit of many inputs, the output of minimum value circuit and an input of adder G of many inputs are connected, the output of reference voltage source G is connected with another input of adder G, the output of adder G is connected with the port vcsref of the current-sharing reference generator of embodiment.
As shown in Figure 5, the current control circuit j(j=1 of embodiment, ..., current control unit n) is made up of amplifier j, saw-toothed wave generator 1j, saw-toothed wave generator 2j, adder j, reference voltage source j, comparator 1j, comparator 2j, the twitter circuit 1j that disappears, the twitter circuit 2j that disappears.The input of amplifier j is connected with the port vsenj of the current control circuit j of embodiment, the output of amplifier j is connected with the inverting input of comparator 1j, an input of adder j is connected with the port vcsrefj of the current control circuit j of embodiment, another input of adder j is connected with the output of saw-toothed wave generator 1j, the output of adder j is connected with the normal phase input end of comparator 1j, the output of comparator 1j is connected with the input of the twitter circuit 1j that disappears, the ON/OFF that the twitter circuit 1j that disappears exports described N-MOS supervisor Sj drives instruction vgsj, the output of saw-toothed wave generator 2j is connected with the normal phase input end of comparator 2j, the output of reference voltage source j is connected with the inverting input of comparator 2j, the output of comparator 2j is connected with the input of the twitter circuit 2j that disappears, the ON/OFF that the twitter circuit 2j that disappears exports described N-MOS auxiliary tube Saj drives instruction vgsaj.
The complete channels circuit j(j=1 of embodiment ..., operating state n) is determined by current-sharing reference generator and current control circuit j.As shown in Figure 4, the output signal vcsref=MIN{G1 × vsen1 of current-sharing reference generator ..., Gn × vsenn}+VrefG, numerical value G1 to Gn is the enlargement ratio of amplifier G1 to amplifier Gn, and numerical value VrefG is the output voltage values of reference voltage source G, and MIN{} is minimum value function.As shown in Figure 5, in the time of Aj × vsenj<vcsrefj+MIN{vser1j}, complete channels circuit j is operated in normal open state, and numerical value Aj is the enlargement ratio of amplifier j, and numerical value vser1j is the output voltage values of saw-toothed wave generator 1j; In the time of vcsrefj+MIN{vser1j}<Aj × vsenj<vcsrefj+MAX{vser1j}, complete channels circuit j is operated on off state, and MAX{} is max function.
Fig. 6 is inductance L j(j=1 ..., n) and all oscillogram of the complete channels circuit j of embodiment in the time of switch working state in the situation in current continuity state of coupling inductance Laj and Lbj.Fig. 7 is inductance L j(j=1 ..., the n) oscillogram of the complete channels circuit j of embodiment in the time of normal open operating state in the situation in current continuity state.
Inductance L j(j=1 ..., n) and coupling inductance Laj and Lbj all under current continuity state status the steady operation process of the complete channels circuit j of embodiment in the time of switch working state comprise following 4 stages (stage 1a is to stage 4a).
Stage 1a:N-MOS is responsible for Sj(j=1 ..., n) conducting, N-MOS auxiliary tube Saj conducting.DC power supply Vij, input capacitance Cij, inductance L j, N-MOS supervisor Sj, output capacitance Coj and load R form a loop.Now, the voltage vLj=Vij-Vo>0 at inductance L j two ends, inductance L j charging, current i Lj and current i Sj all increase.Diode Dj cut-off, current i Dj=0.Auxiliary capacitor Caj, coupling inductance Laj, N-MOS auxiliary tube Saj form another loop.Now, auxiliary capacitor Caj electric discharge, coupling inductance Laj charging, current i Laj increases, and is magnetic energy preservation by unnecessary electric energy conversion.Diode Daj cut-off, the current i Lbj=0 of coupling inductance Lbj.
Stage 2a:N-MOS is responsible for Sj(j=1 ..., n) turn-off (current i Sj=0), N-MOS auxiliary tube Saj conducting.Diode Dj conducting, DC power supply Vij, input capacitance Cij, inductance L j, diode Dj, auxiliary capacitor Caj, output capacitance Coj and load R form a loop.Now, the voltage vLj=Vij – vCaj – Vo<0 at inductance L j two ends, inductance L j electric discharge, current i Lj and current i Dj all reduce.DC power supply Vij, input capacitance Cij, inductance L j, diode Dj, coupling inductance Laj, N-MOS auxiliary tube Saj, output capacitance Coj and load R form another loop.Now, coupling inductance Laj charging, current i Laj increases, and is magnetic energy preservation by unnecessary electric energy conversion.Diode Daj cut-off, the current i Lbj=0 of coupling inductance Lbj.
Stage 3a:N-MOS is responsible for Sj(j=1 ..., n) turn-off (current i Sj=0), N-MOS auxiliary tube Saj turn-offs (the current i Laj=0 of coupling inductance Laj).Diode Dj conducting, DC power supply Vij, input capacitance Cij, inductance L j, diode Dj, auxiliary capacitor Caj, output capacitance Coj and load R form a loop.Now, the voltage vLj=Vij – vCaj – Vo<0 at inductance L j two ends, inductance L j electric discharge, current i Lj and current i Dj all reduce, and auxiliary capacitor Caj charging, preserves unnecessary electric energy.Diode Daj conducting, diode Daj, coupling inductance Lbj, output capacitance Coj and load R form another loop.Now, coupling inductance Lbj electric discharge, current i Lbj reduces, and the magnetic energy of preservation is fed back to load R.
Stage 4a:N-MOS is responsible for Sj(j=1 ..., n) conducting, N-MOS auxiliary tube Saj turn-offs (the current i Laj=0 of coupling inductance Laj).DC power supply Vij, input capacitance Cij, inductance L j, N-MOS supervisor Sj, output capacitance Coj and load R form a loop.Now, the voltage vLj=Vij-Vo>0 at inductance L j two ends, inductance L j charging, current i Lj and current i Sj all increase.Diode Dj cut-off, current i Dj=0.Diode Daj conducting, diode Daj, coupling inductance Lbj, output capacitance Coj and load R form another loop.Now, coupling inductance Lbj electric discharge, current i Lbj reduces, and the magnetic energy of preservation is fed back to load R.
Inductance L j(j=1 ..., n) under current continuity state status, the steady operation process of the complete channels circuit j of embodiment in the time of normal open operating state comprises following 2 stages (stage 1b is to stage 2b).
Stage 1b:N-MOS is responsible for Sj(j=1 ..., n) conducting, N-MOS auxiliary tube Saj conducting.DC power supply Vij, input capacitance Cij, inductance L j, N-MOS supervisor Sj, output capacitance Coj and load R form a loop.Now, the voltage vLj=Vij-Vo ≈ 0 at inductance L j two ends, current i Lj and current i Sj substantially constant.Diode Dj cut-off, current i Dj=0.Auxiliary capacitor Caj, coupling inductance Laj, N-MOS auxiliary tube Saj form another loop, because of the terminal voltage vCaj=0 of auxiliary capacitor Caj, can be converted into the magnetic energy of coupling inductance without unnecessary electric energy, cause the current i Laj=0 of coupling inductance Laj.Diode Daj cut-off, the current i Lbj=0 of coupling inductance Lbj.
Stage 2b:N-MOS is responsible for Sj(j=1 ..., n) conducting, N-MOS auxiliary tube Saj turn-offs (the current i Laj=0 of coupling inductance Laj).DC power supply Vij, input capacitance Cij, inductance L j, N-MOS supervisor Sj, output capacitance Coj and load R form a loop.Now, the voltage vLj=Vij-Vo ≈ 0 at inductance L j two ends, current i Lj and current i Sj substantially constant.Diode Dj cut-off, current i Dj=0.Diode Daj cut-off, the current i Lbj=0 of coupling inductance Lbj, coupling inductance feeds back to load R without magnetic energy.
Content described in this specification embodiment is only enumerating of way of realization to utility model design; protection range of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection range of the present utility model also and conceive the equivalent technologies means that can expect according to the utility model in those skilled in the art.
Claims (5)
1. what contain coupling inductance can present a formula current sharing interface circuit, it is characterized in that: the described formula current sharing interface circuit of presenting containing coupling inductance is made up of power major loop, control loop, accessory power supply 3 parts,
Described power major loop is made up of to complete channels circuit n complete channels circuit 1, described complete channels circuit j, j=1, n, comprise input capacitance Cij, inductance L j, N-MOS is responsible for Sj, N-MOS auxiliary tube Saj, auxiliary capacitor Caj, coupling inductance Laj and Lbj, diode Dj, booster diode Daj, output capacitance Coj, DC power supply Vij, j=1, n, anode be connected with one end of input capacitance Cij and one end of inductance L j, the other end of inductance L j is connected with the anode of diode Dj and the drain electrode of N-MOS supervisor Sj, the negative electrode of diode Dj is connected with one end of coupling inductance Laj and one end of auxiliary capacitor Caj, the other end of coupling inductance Laj is connected with the drain electrode of N-MOS auxiliary tube Saj, N-MOS supervisor's source electrode of Sj and the other end of auxiliary capacitor Caj, the source electrode of N-MOS auxiliary tube Saj, one end of coupling inductance Lbj, one end of output capacitance Coj, one end of the anode of output voltage V o and load R is connected, one end of described coupling inductance Lbj and the other end of described coupling inductance Laj are Same Name of Ends relations, the other end of coupling inductance Lbj is connected with the negative electrode of booster diode Daj, the other end of described coupling inductance Lbj and one end of described coupling inductance Laj are Same Name of Ends relations, the negative terminal of the anode of booster diode Daj and DC power supply Vij, the other end of input capacitance Cij, the other end of output capacitance Coj, the other end of the negative terminal of output voltage V o and load R is connected, the contact of the contact of coupling inductance Lbj and booster diode Daj and coupling inductance Laj and diode Dj is Same Name of Ends relation,
Described control loop is made up of to current control circuit n and current-sharing reference generator current control circuit 1, described current control circuit j, j=1, n, have port vsenj, port vgj, port vsj, port vgaj, port vcsrefj, described current-sharing reference generator has port vsenj and port vcsref, the port vsenj of described current control circuit j receives the detection signal of the current i Lj of described inductance L j, the port vgj of described current control circuit j is connected with the gate pole of described N-MOS supervisor Sj, the port vsj of described current control circuit j is connected with described N-MOS supervisor's source electrode of Sj and the source electrode of described N-MOS auxiliary tube Saj, the port vgaj of described current control circuit j is connected with the gate pole of described N-MOS auxiliary tube Saj, the port vcsrefj of described current control circuit j is connected with the port vcsref of described current-sharing reference generator, the port vsenj of described current-sharing reference generator receives the detection signal of the current i Lj of described inductance L j,
Described accessory power supply can provide required operating voltage for described control loop, has port Vij, j=1,, n, and port Gnd, the port Vij of described accessory power supply is connected with the anode of described DC power supply Vij, and the port Gnd of described accessory power supply is connected with the negative terminal of described DC power supply Vij.
As claimed in claim 1 containing coupling inductance can present formula current sharing interface circuit, it is characterized in that: described current control circuit j, j=1 ..., n, is made up of current control unit and metal-oxide-semiconductor driver element,
Described current control unit can be exported the ON/OFF driving instruction vgsj of described N-MOS supervisor Sj and the ON/OFF driving instruction vgsaj of described N-MOS auxiliary tube Saj according to the information of the information of the port vsenj of current control circuit j and port vcsrefj,
Described metal-oxide-semiconductor driver element can drive the ON/OFF of instruction vgsj and described N-MOS auxiliary tube Saj to drive instruction vgsaj to convert to by port vgj, the port vsj of described current control circuit j and the differential driving signal of port vgaj output the ON/OFF of described N-MOS supervisor Sj.
As claimed in claim 2 containing coupling inductance can present formula current sharing interface circuit, it is characterized in that: described current control circuit j, j=1, n, current control unit by amplifier j, adder j, saw-toothed wave generator 1j, saw-toothed wave generator 2j, reference voltage source j, comparator 1j, comparator 2j, twitter circuit 1j and the twitter circuit 2j composition that disappears disappear, the input of described amplifier j is connected with the port vsenj of described current control circuit j, the output of amplifier j is connected with the inverting input of comparator 1j, an input of adder j is connected with the port vcsrefj of described current control circuit j, another input of adder j is connected with the output of saw-toothed wave generator 1j, the output of adder j is connected with the normal phase input end of comparator 1j, the output of comparator 1j is connected with the input of the twitter circuit 1j that disappears, the ON/OFF that the twitter circuit 1j that disappears exports described N-MOS supervisor Sj drives instruction vgsj, the normal phase input end of comparator 2j is connected with the output of saw-toothed wave generator 2j, the inverting input of comparator 2j is connected with the output of reference voltage source j, the output of comparator 2j is connected with the input of the twitter circuit 2j that disappears, the ON/OFF that the twitter circuit 2j that disappears exports described N-MOS auxiliary tube Saj drives instruction vgsaj.
4. as claim 1, one of 2 and 3 described can present formula current sharing interface circuit containing coupling inductance, it is characterized in that: described accessory power supply is inputted the DC-DC converter exported to diode Dbn with list by diode Db1 more and formed, described diode Db1 is connected to diode Dbn common cathode and with the positive input terminal of described single input DC-DC converter of exporting more, described diode Dbj, j=1, n, anode be connected with the port Vij of described accessory power supply, the negative input end of DC-DC converter and the port Gnd of described accessory power supply of the many outputs of described single input are connected.
As claimed in claim 1 containing coupling inductance can present formula current sharing interface circuit, it is characterized in that: described current-sharing reference generator by amplifier G1 to amplifier Gn, the minimum value circuit of many inputs, adder G and reference voltage source G composition, described amplifier Gj, j=1, n, input be connected with the port vsenj of described current-sharing reference generator, the output of amplifier Gj is connected with the input vj of the minimum value circuit of described many inputs, the output of minimum value circuit and an input of adder G of many inputs are connected, the output of reference voltage source G is connected with another input of adder G, the output of adder G is connected with the port vcsref of described current-sharing reference generator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320529233.1U CN203596620U (en) | 2013-08-28 | 2013-08-28 | Energy feedback type current-sharing interface circuit comprising coupling inductor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320529233.1U CN203596620U (en) | 2013-08-28 | 2013-08-28 | Energy feedback type current-sharing interface circuit comprising coupling inductor |
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| CN203596620U true CN203596620U (en) | 2014-05-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103515949A (en) * | 2013-08-28 | 2014-01-15 | 浙江工业大学 | Energy feedback type current sharing interface circuit containing coupling inductor |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103515949A (en) * | 2013-08-28 | 2014-01-15 | 浙江工业大学 | Energy feedback type current sharing interface circuit containing coupling inductor |
| CN103515949B (en) * | 2013-08-28 | 2015-08-05 | 浙江工业大学 | Formula current sharing interface circuit can be presented containing coupling inductance |
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