CN201266889Y - DC-DC converter - Google Patents
DC-DC converter Download PDFInfo
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- CN201266889Y CN201266889Y CNU2008201470409U CN200820147040U CN201266889Y CN 201266889 Y CN201266889 Y CN 201266889Y CN U2008201470409 U CNU2008201470409 U CN U2008201470409U CN 200820147040 U CN200820147040 U CN 200820147040U CN 201266889 Y CN201266889 Y CN 201266889Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The utility model relates to a direct current-direct current converter, comprising a positive input bus, a negative input bus, at least two resonant converter circuits between the positive input bus and the negative input bus, and a control circuit; a voltage preregulator circuit is respectively arranged among each resonant converter circuit, the positive input bus and the negative input bus; the voltage of each voltage preregulator circuit is adjusted respectively so as to lead the output voltage of each resonant converter circuit to be same, thus leading the input current of each resonant converter circuit to be same, solving the problem that when the resonant converter circuits are parallel and the resonant parameters of the two resonant converter circuits have difference, the two paths of currents are not balance, even one path of current does not transmit power to the secondary winding, being capable of reducing ripple of input/output current of the direct current-direct current converter and simultaneously having the function of automatic current limiting.
Description
Technical field
The utility model relates to converter, more particularly, relates to a kind of DC-DC converter.
Background technology
Patent US6583999B1 as shown in Figure 1 discloses a kind of DC-DC converter, this DC-DC converter comprises the controlled resonant converter circuit of a BOOST circuit and a pair of parallel connection, first and the second controlled resonant converter circuit can reduce the output ripple electric current with the 90 degree work of same frequency misphase.But when if the resonant parameter of first and second controlled resonant converters there are differences, the current unevenness weighing apparatus of two-way when the resonant parameter diversity ratio is big, even has one the tunnel toward the secondary transmitted power.
The utility model content
The technical problems to be solved in the utility model is, each branch current of controlled resonant converter circuit at the above-mentioned parallel connection of prior art is unbalanced, when resonant parameter differs greatly, even a branch road is arranged, a kind of DC-DC converter is provided not toward the defective of secondary transmitted power.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of DC converter, at least two controlled resonant converter circuit and control circuit that it comprises between positive and negative inlet highway and the positive negative output bus are provided with voltage pre-regulator circuit between each controlled resonant converter circuit and positive and negative inlet highway; The control end of each controlled resonant converter circuit and voltage pre-regulator circuit all is coupled to control circuit, and described control circuit is used to regulate the output voltage of each voltage pre-regulator circuit and the output voltage of DC-DC converter circuit.
In DC-DC converter described in the utility model, each controlled resonant converter circuit all is self-limiting controlled resonant converter circuit or the controlled resonant converter circuit with clamp winding.
In DC-DC converter described in the utility model, each voltage pre-regulator circuit is BOOST type voltage pre-regulator circuit or BUCK type voltage pre-regulator circuit.
In DC-DC converter described in the utility model, described DC converter comprises the first controlled resonant converter circuit and the second controlled resonant converter circuit between positive and negative inlet highway and the positive negative output bus; The first controlled resonant converter circuit and and positive and negative inlet highway between be provided with the first voltage pre-regulator circuit; Between the second controlled resonant converter circuit and positive and negative inlet highway, be provided with the second voltage pre-regulator circuit; The first voltage pre-regulator circuit and the second voltage pre-regulator circuit are with misphase 180 degree work frequently; The first controlled resonant converter circuit and the second controlled resonant converter circuit are with misphase 90 degree work frequently.
In DC-DC converter described in the utility model, the described first controlled resonant converter circuit and the second controlled resonant converter circuit are half-bridge structures.
In DC-DC converter described in the utility model, the described first controlled resonant converter circuit comprises first resonant circuit in sequential series, transformer T1 and first rectification circuit; Described first resonant circuit comprises switching tube S1, S2, capacitor C r1, Cr2, diode Dc1, Dc2 and inductance L r1;
Wherein, the end that first end of switching tube S1 is connected with the output of the first voltage pre-regulator circuit, second end of switching tube S1 and first end of switching tube S2 are connected and are connected to the former limit of transformer T1 winding, second end of switching tube S2 is connected to the input negative busbar;
The end that the end of capacitor C r1 is connected with the output of the first voltage pre-regulator circuit, the other end of capacitor C r1 and the end of capacitor C r2 are connected and are connected to inductance L r1, be also connected to the anode of diode Dc1 simultaneously, the other end of capacitor C r2 is connected to the input negative busbar, and the other end of inductance L r1 is connected to the other end of the former limit of transformer T1 winding;
The negative electrode of diode Dc1 is connected with the output of the first voltage pre-regulator circuit, the anode of diode Dc1 is connected with diode Dc2 negative electrode, the anode of diode Dc2 is connected to the input negative busbar;
The control end of switching tube S1 and switching tube S2 is coupled to described control circuit.
In DC-DC converter described in the utility model, the described second controlled resonant converter circuit comprises second resonant circuit in sequential series, transformer T2 and second rectification circuit; Described second resonant circuit comprises switching tube S3, S4, capacitor C r3, Cr4, diode Dc3, Dc4 and inductance L r2;
Wherein, the end that first end of switching tube S3 is connected with the output of the second voltage pre-regulator circuit, second end of switching tube S3 and first end of switching tube S4 are connected and are connected to the former limit of transformer T2 winding, second end of switching tube S4 is connected to the input negative busbar;
The end that the end of capacitor C r3 is connected with the output of the second voltage pre-regulator circuit, the other end of capacitor C r3 and the end of capacitor C r4 are connected and are connected to inductance L r2, be also connected to the anode of diode Dc3 simultaneously, the other end of capacitor C r4 is connected to the input negative busbar, and the other end of inductance L r2 is connected to the other end of the former limit of transformer T2 winding;
The negative electrode of diode Dc3 is connected with the output of the second voltage pre-regulator circuit, the anode of diode Dc3 is connected with diode Dc4 negative electrode, the anode of diode Dc4 is connected to the input negative busbar;
The control end of switching tube S3 and switching tube S4 is coupled to described control circuit.
In DC-DC converter described in the utility model, the described first voltage pre-regulator circuit comprises inductance L 11, diode D11, capacitor C 11 and switching tube S11;
Wherein, an end of inductance L 11 is connected with the input positive bus-bar, and the other end and the anode of diode D11 are connected and are connected to first end of switching tube S11;
The negative electrode of diode D11 is as the output of the described first voltage pre-regulator circuit, and is connected with an end of capacitor C 11, and the other end of capacitor C 11 is connected to the input negative busbar;
Second end of switching tube S11 is connected to the input negative busbar, and the control end of switching tube S11 is coupled to described control circuit.
In DC-DC converter described in the utility model, the described second voltage pre-regulator circuit comprises inductance L 12, diode D12, capacitor C 12 and switching tube S12;
Wherein, an end of inductance L 12 is connected with the input positive bus-bar, and the other end and the anode of diode D12 are connected and are connected to first end of switching tube S12;
The negative electrode of diode D121 is as the output of the described first voltage pre-regulator circuit, and is connected with an end of capacitor C 12, and the other end of capacitor C 12 is connected to the input negative busbar;
Second end of switching tube S12 is connected to the input negative busbar, and the control end of switching tube S12 is coupled to described control circuit.
In DC-DC converter described in the utility model, the described first controlled resonant converter circuit comprises first resonant circuit in sequential series, transformer T1 and first rectification circuit; Described first resonant circuit comprises switching tube S1, S2, capacitor C r1, Cr2, diode Dc1, Dc2 and transformer Lr1;
Wherein, the end that first end of switching tube S1 is connected with the output of the first voltage pre-regulator circuit, second end of switching tube S1 and first end of switching tube S2 are connected and are connected to the former limit of transformer T1 winding, second end of switching tube S2 is connected to the input negative busbar;
The end that the end of capacitor C r1 is connected with the output of the first voltage pre-regulator circuit, the other end of capacitor C r1 is connected and is connected to the former limit winding of transformer Lr1 with the end of capacitor C r2, the other end of capacitor C r2 is connected to the input negative busbar, and the other end of the former limit winding of transformer Lr1 is connected to the other end of the former limit of transformer T1 winding;
The negative electrode of diode Dc1 is connected with the output of the first voltage pre-regulator circuit, the anode of diode Dc1 is connected with diode Dc2 negative electrode, and be connected with the end of the same name of the secondary winding of transformer Lr1, the anode of diode Dc2 is connected to the input negative busbar; The different name end of the secondary winding of transformer Lr1 is connected to the other end of transformer T1;
The control end of switching tube S1 and switching tube S2 is coupled to described control circuit.
In DC-DC converter described in the utility model, the described second controlled resonant converter circuit comprises second resonant circuit in sequential series, transformer T2 and second rectification circuit; Described second resonant circuit comprises switching tube S3, S4, capacitor C r3, Cr4, diode Dc3, Dc4 and transformer Lr2;
Wherein, the end that first end of switching tube S3 is connected with the output of the second voltage pre-regulator circuit, second end of switching tube S3 and first end of switching tube S4 are connected and are connected to the former limit of transformer T2 winding, second end of switching tube S4 is connected to the input negative busbar;
The end that the end of capacitor C r3 is connected with the output of the second voltage pre-regulator circuit, the other end of capacitor C r3 is connected and is connected to the former limit winding of transformer Lr2 with the end of capacitor C r4, the other end of capacitor C r4 is connected to the input negative busbar, and the other end of the former limit winding of transformer Lr1 is connected to the other end of the former limit of transformer T2 winding;
The negative electrode of diode Dc3 is connected with the output of the second voltage pre-regulator circuit, the anode of diode Dc3 is connected with diode Dc4 negative electrode, and be connected with the end of the same name of the secondary winding of transformer Lr2, the anode of diode Dc4 is connected to the input negative busbar; The different name end of the secondary winding of transformer Lr2 is connected to the other end of transformer T2;
The control end of switching tube S3 and switching tube S4 is coupled to described control circuit.
In DC-DC converter described in the utility model, the described first controlled resonant converter circuit comprises first resonant circuit in sequential series, transformer T1 and first rectification circuit; Described first resonant circuit comprises switching tube S1, S2, capacitor C r1, Cr2, diode Dc1, Dc2 and inductance L r1; Transformer T1 comprises former limit first winding and former limit second winding;
Wherein, first end of switching tube S1 is connected with the output of the first voltage pre-regulator circuit, second end of switching tube S1 is connected with first end of switching tube S2 and be connected to inductance L r1 one end, the other end of inductance L r1 is connected with an end of the former limit of transformer T1 first winding, be also connected to an end of the former limit of transformer T1 second winding simultaneously, second end of switching tube S2 is connected to the input negative busbar;
The other end that the end of capacitor C r1 is connected with the output of the first voltage pre-regulator circuit, the other end of capacitor C r1 is connected and is connected to former limit first winding of transformer T1 with the end of capacitor C r2, the other end of capacitor C r2 is connected to the input negative busbar;
The negative electrode of diode Dc1 is connected with the output of the first voltage pre-regulator circuit, the anode of diode Dc1 is connected with diode Dc2 negative electrode, and be connected with the other end of former limit second winding of transformer T1, the anode of diode Dc2 is connected to the input negative busbar;
The control end of switching tube S1 and switching tube S2 is coupled to described control circuit.
In DC-DC converter described in the utility model, the described second controlled resonant converter circuit comprises second resonant circuit in sequential series, transformer T2 and second rectification circuit; Described second resonant circuit comprises switching tube S3, S4, capacitor C r3, Cr4, diode Dc3, Dc4 and inductance L r2; Transformer T2 comprises former limit first winding and former limit second winding;
Wherein, first end of switching tube S3 is connected with the output of the second voltage pre-regulator circuit, second end of switching tube S3 is connected with first end of switching tube S4 and be connected to inductance L r2 one end, the other end of inductance L r2 is connected with an end of the former limit of transformer T2 first winding, be also connected to an end of the former limit of transformer T2 second winding simultaneously, second end of switching tube S4 is connected to the input negative busbar;
The other end that the end of capacitor C r3 is connected with the output of the second voltage pre-regulator circuit, the other end of capacitor C r3 is connected and is connected to former limit first winding of transformer T2 with the end of capacitor C r4, the other end of capacitor C r4 is connected to the input negative busbar;
The negative electrode of diode Dc3 is connected with the output of the second voltage pre-regulator circuit, the anode of diode Dc3 is connected with diode Dc4 negative electrode, and be connected with the other end of former limit second winding of transformer T2, the anode of diode Dc4 is connected to the input negative busbar;
The control end of switching tube S3 and switching tube S4 is coupled to described control circuit.
In DC-DC converter described in the utility model, the described first voltage pre-regulator circuit comprises inductance L 11, diode D11, capacitor C 11 and switching tube S11;
Wherein, an end of inductance L 11 is connected with the input positive bus-bar, and the other end and the anode of diode D11 are connected and are connected to first end of switching tube S11;
The negative electrode of diode D11 is as the output of the described first voltage pre-regulator circuit, and is connected with an end of capacitor C 11, and the other end of capacitor C 11 is connected to the input negative busbar;
Second end of switching tube S11 is connected to the input negative busbar, and the control end of switching tube S11 is coupled to described control circuit;
The described second voltage pre-regulator circuit comprises inductance L 12, diode D12, capacitor C 12 and switching tube S12;
Wherein, an end of inductance L 12 is connected with the input positive bus-bar, and the other end and the anode of diode D12 are connected and are connected to first end of switching tube S12;
The negative electrode of diode D121 is as the output of the described first voltage pre-regulator circuit, and is connected with an end of capacitor C 12, and the other end of capacitor C 12 is connected to the input negative busbar;
Second end of switching tube S12 is connected to the input negative busbar, and the control end of switching tube S12 is coupled to described control circuit.
In DC-DC converter described in the utility model, described first rectification circuit and second rectification circuit are bridge rectifier or synchronous rectification; Described DC-DC converter also comprises filter capacitor Co, and it is connected in parallel between the positive negative output bus of DC-DC converter.
Implement DC-DC converter of the present utility model, has following beneficial effect: by regulating the voltage of each voltage pre-regulator circuit respectively, make the output voltage of each controlled resonant converter circuit identical, thereby make the output current of each controlled resonant converter circuit identical, when having solved the parallel connection of controlled resonant converter circuit, when two controlled resonant converter circuit resonance parameters there are differences, two-way current unevenness weighing apparatus, even have one the tunnel not toward the problem of secondary transmitted power, and can reduce the input and output current ripples of controlled resonant converter circuit, have the automatic current limiting function simultaneously.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the circuit theory diagrams of DC-DC converter in the prior art;
Fig. 2 is the circuit theory diagrams of the utility model DC-DC converter first embodiment;
Fig. 3 is the drive signal sequential chart of controlled resonant converter circuit shown in Figure 2;
Fig. 4 is a controlled resonant converter circuit inductance current waveform figure shown in Figure 2;
Fig. 5 is the drive signal sequential chart of voltage pre-regulator circuit shown in Figure 2;
Fig. 6 is a voltage pre-regulator circuit inductance current waveform figure shown in Figure 2;
Fig. 7 is the circuit theory diagrams of the utility model DC-DC converter second embodiment;
Fig. 8 is the drive signal sequential chart of controlled resonant converter circuit shown in Figure 7;
Fig. 9 is a controlled resonant converter circuit inductance current waveform figure shown in Figure 7;
Figure 10 is the drive signal sequential chart of voltage pre-regulator circuit shown in Figure 7;
Figure 11 is a voltage pre-regulator circuit inductance current waveform figure shown in Figure 7;
Figure 12 is the circuit theory diagrams of the utility model DC-DC converter the 3rd embodiment.
Embodiment
DC-DC converter of the prior art comprises at least two controlled resonant converter circuit between positive and negative inlet highway and the positive negative output bus, control circuit and a voltage pre-regulator circuit, in the sort circuit structure, when if the resonant parameter of controlled resonant converter circuit in parallel there are differences, will cause each branch current unbalanced, even have one the tunnel not toward the problem of secondary transmitted power, therefore the utility model is at above defective, this DC-DC converter is improved, and specifically is to be provided with voltage pre-regulator circuit between each controlled resonant converter circuit and positive and negative inlet highway; The control end of each controlled resonant converter circuit and voltage pre-regulator circuit all is coupled to control circuit, and described control circuit is used to regulate the output voltage of each voltage pre-regulator circuit and the output voltage of DC-DC converter circuit.Regulate the voltage of each voltage pre-regulator circuit respectively, make that the output voltage of each controlled resonant converter circuit is identical, thereby make that the output current of each controlled resonant converter circuit is identical.
In addition, for each controlled resonant converter circuit current limiting device is set in force, make it have the self-limiting function, therefore even the good self-limiting function that had of this controlled resonant converter circuit makes when short-circuit conditions takes place also and prevents the circuit elements device failure by restricting circuits electric current effectively.For voltage pre-regulator circuit, it can be BOOST type voltage pre-regulator circuit or BUCK type voltage pre-regulator circuit.
Among first embodiment as shown in Figure 2, this DC-DC converter comprises first controlled resonant converter circuit 1 and the second controlled resonant converter circuit 2 of crisscross parallel between positive and negative inlet highway and positive negative output bus; In order to regulate the output current of the first controlled resonant converter circuit 1 and the second controlled resonant converter circuit 2, the first controlled resonant converter circuit 1 and and positive and negative inlet highway between be provided with the first voltage pre-regulator circuit 3; Between the second controlled resonant converter circuit 2 and positive and negative inlet highway, be provided with the second voltage pre-regulator circuit 4; As illustrated in Figures 5 and 6, the first voltage pre-regulator circuit 3 and the second voltage pre-regulator circuit 4 are with misphase 180 degree work frequently; Shown in Fig. 3 and 4, the first controlled resonant converter circuit 1 and the second controlled resonant converter circuit 2 are with misphase 90 degree work frequently.In force, the first controlled resonant converter circuit 1 and the second controlled resonant converter circuit 2 are half-bridge structures.
As shown in Figure 2, the first controlled resonant converter circuit 1 comprises first resonant circuit 11, transformer T1 and first rectification circuit in sequential series; First rectification circuit can be bridge rectifier or synchronous rectification; First resonant circuit 11 comprises switching tube S1, S2, capacitor C r1, Cr2, diode Dc1, Dc2 and inductance L r1, diode Dc1, Dc2 make this first controlled resonant converter circuit have the self-limiting function as clamping diode, wherein, the end that first end of switching tube S1 is connected with the output of the first voltage pre-regulator circuit, second end of switching tube S1 and first end of switching tube S2 are connected and are connected to the former limit of transformer T1 winding, second end of switching tube S2 is connected to the input negative busbar; The end that the end of capacitor C r1 is connected with the output of the first voltage pre-regulator circuit, the other end of capacitor C r1 and the end of capacitor C r2 are connected and are connected to inductance L r1, be also connected to the anode of diode Dc1 simultaneously, the other end of capacitor C r2 is connected to the input negative busbar, and the other end of inductance L r1 is connected to the other end of the former limit of transformer T1 winding; The negative electrode of diode Dc1 is connected with the output of the first voltage pre-regulator circuit, the anode of diode Dc1 is connected with diode Dc2 negative electrode, the anode of diode Dc2 is connected to the input negative busbar; The control end of switching tube S1 and switching tube S2 is coupled to control circuit 5.The secondary winding of this transformer T1 has 3 taps in addition, i.e. first tap, second tap and centre cap; First rectification circuit comprises diode D1 and D2, the anode of diode D1 is connected with first tap of the secondary winding of transformer T1, the anode of diode D2 is connected with second tap of the secondary winding of transformer T1, the negative electrode of diode D1 and diode D2 all is coupled to the output positive bus-bar, and the centre cap of the secondary winding of transformer T1 is coupled to the output negative busbar.
The second controlled resonant converter circuit comprises second resonant circuit in sequential series, transformer T2 and second rectification circuit; Second rectification circuit can be bridge rectifier or synchronous rectification; Second resonant circuit comprises switching tube S3, S4, capacitor C r3, Cr4, diode Dc3, Dc4 and inductance L r2; Diode Dc3, Dc4 make this second controlled resonant converter circuit have the self-limiting function as clamping diode, wherein, the end that first end of switching tube S3 is connected with the output of the second voltage pre-regulator circuit, second end of switching tube S3 and first end of switching tube S4 are connected and are connected to the former limit of transformer T2 winding, second end of switching tube S4 is connected to the input negative busbar; The end that the end of capacitor C r3 is connected with the output of the second voltage pre-regulator circuit, the other end of capacitor C r3 and the end of capacitor C r4 are connected and are connected to inductance L r2, be also connected to the anode of diode Dc3 simultaneously, the other end of capacitor C r4 is connected to the input negative busbar, and the other end of inductance L r2 is connected to the other end of the former limit of transformer T2 winding; The negative electrode of diode Dc3 is connected with the output of the second voltage pre-regulator circuit, the anode of diode Dc3 is connected with diode Dc4 negative electrode, the anode of diode Dc4 is connected to the input negative busbar; The control end of switching tube S3 and switching tube S4 is coupled to control circuit 5.The secondary winding of this transformer T2 has 3 taps in addition, i.e. first tap, second tap and centre cap; Second rectification circuit comprises diode D3 and D4, the anode of diode D3 is connected with first tap of the secondary winding of transformer T2, the anode of diode D4 is connected with second tap of the secondary winding of transformer T2, the negative electrode of diode D3 and diode D4 all is coupled to the output positive bus-bar, and the centre cap of the secondary winding of transformer T2 is coupled to the output negative busbar.
The first voltage pre-regulator circuit 3 comprises inductance L 11, diode D11, capacitor C 11 and switching tube S11; Wherein, an end of inductance L 11 is connected with the input positive bus-bar, and the other end and the anode of diode D11 are connected and are connected to first end of switching tube S11; The negative electrode of diode D11 is as the output of the first voltage pre-regulator circuit 3, and is connected with an end of capacitor C 11, and the other end of capacitor C 11 is connected to the input negative busbar; Second end of switching tube S11 is connected to the input negative busbar, and the control end of switching tube S11 is coupled to control circuit 5.The second voltage pre-regulator circuit 4 comprises inductance L 12, diode D12, capacitor C 12 and switching tube S12; Wherein, an end of inductance L 12 is connected with the input positive bus-bar, and the other end and the anode of diode D12 are connected and are connected to first end of switching tube S12; The negative electrode of diode D121 is as the output of the described first voltage pre-regulator circuit, and is connected with an end of capacitor C 12, and the other end of capacitor C 12 is connected to the input negative busbar; Second end of switching tube S12 is connected to the input negative busbar, and the control end of switching tube S12 is coupled to control circuit 5.
In addition, for further filtering alternating component, make the direct current of output more level and smooth, filter capacitor Co is set in this DC-DC converter, after its concrete connected mode is the first controlled resonant converter circuit and the second controlled resonant converter circuit parallel connection, filter capacitor Co is arranged between itself and the positive negative output bus.
In force in order further to optimize circuit structure, the first voltage pre-regulator circuit 3, the second voltage pre-regulator circuit 4, the first controlled resonant converter circuit 1 and the second controlled resonant converter circuit 2 drive circuit by separately respectively are coupled to control circuit 5, as shown in Figure 2, promptly switching tube S1 and switching tube S2 are coupled to control circuit 5 by drive circuit 3; Switching tube S3 and switching tube S4 are coupled to control circuit 5 by drive circuit 4; Switching tube S11 is coupled to control circuit 5 by drive circuit 1; Switching tube S12 is coupled to control circuit 5 by drive circuit 2.
In practical work process, the output voltage of the output voltage of the first voltage pre-regulator circuit 3 (BOOST type) and the second voltage pre-regulator circuit 4 (BOOST type), the first controlled resonant converter circuit 1 (semi-bridge type) and the second controlled resonant converter circuit 2 (semi-bridge type) and the output current of the first controlled resonant converter circuit 1 and the second controlled resonant converter circuit 2 are as the input signal of control circuit 5.The first voltage pre-regulator circuit 3 and the second voltage pre-regulator circuit, 4 output positive bus-bars do not have coupling, has independent voltage loop, the output current of the first controlled resonant converter circuit 1 and the second controlled resonant converter circuit 2 is as the Voltage loop feedback signal of the first voltage pre-regulator circuit 3 and the second voltage pre-regulator circuit 4, regulate the first voltage pre-regulator circuit 3 and the second voltage pre-regulator circuit, 4 output voltages respectively, make the first controlled resonant converter circuit 1 identical, thereby make the first controlled resonant converter circuit 1 identical with the output current of the second controlled resonant converter circuit 2 with the output voltage of the second controlled resonant converter circuit 2.As shown in Figure 2, the input signal of control circuit comprises the output current separately of output voltage, two controlled resonant converters and the output voltage of two voltage pre-regulator circuit.When the humorous parameter of two controlled resonant converters not simultaneously, its voltage gain difference, be embodied in the output current difference of two controlled resonant converters, be input to control circuit with detected two-way controlled resonant converter current signal this moment, the two-way current signal is averaged, every road current signal and two-way current average are done computing afterwards as the feedback signal of the voltage pre-regulator circuit voltage loop that is connected with every road controlled resonant converter, and voltage pre-regulator circuit voltage makes the output current of every road controlled resonant converter identical thereby control circuit is regulated every road.
Among two other embodiment shown in Fig. 7 and 12, this DC-DC converter comprises first controlled resonant converter circuit 1 and the second controlled resonant converter circuit 2 of crisscross parallel between positive and negative inlet highway and positive negative output bus; In order to regulate the output current of the first controlled resonant converter circuit 1 and the second controlled resonant converter circuit 2, the first controlled resonant converter circuit 1 and and positive and negative inlet highway between be provided with the first voltage pre-regulator circuit 3; Between the second controlled resonant converter circuit 2 and positive and negative inlet highway, be provided with the second voltage pre-regulator circuit 4; For embodiment shown in Figure 7, shown in Figure 10 and 11, its first voltage pre-regulator circuit 3 and the second voltage pre-regulator circuit 4 are with misphase 180 degree work frequently; Shown in Fig. 8 and 9, its first controlled resonant converter circuit 1 and the second controlled resonant converter circuit 2 are with misphase 90 degree work frequently.In force, the first controlled resonant converter circuit 1 and the second controlled resonant converter circuit 2 are half-bridge structures.
As shown in Figure 7, the first controlled resonant converter circuit 1 comprises first resonant circuit 11, transformer T1 and first rectification circuit in sequential series; First rectification circuit can be bridge rectifier or synchronous rectification; First resonant circuit 11 comprises switching tube S1, S2, capacitor C r1, Cr2, diode Dc1, Dc2 and transformer Lr1; Wherein, the end that first end of switching tube S1 is connected with the output of the first voltage pre-regulator circuit 3, second end of switching tube S1 and first end of switching tube S2 are connected and are connected to the former limit of transformer T1 winding, second end of switching tube S2 is connected to the input negative busbar; The end that the end of capacitor C r1 is connected with the output of the first voltage pre-regulator circuit 3, the other end of capacitor C r1 is connected and is connected to the former limit winding of transformer Lr1 with the end of capacitor C r2, the other end of capacitor C r2 is connected to the input negative busbar, and the other end of the former limit winding of transformer Lr1 is connected to the other end of the former limit of transformer T1 winding; The negative electrode of diode Dc1 is connected with the output of the first voltage pre-regulator circuit 3, the anode of diode Dc1 is connected with diode Dc2 negative electrode, and be connected with the end of the same name of the secondary winding of transformer Lr1, the anode of diode Dc2 is connected to the input negative busbar; The different name end of the secondary winding of transformer Lr1 is connected to the other end of transformer T1; The control end of switching tube S1 and switching tube S2 is coupled to described control circuit.The secondary winding of this transformer T1 has 3 taps in addition, i.e. first tap, second tap and centre cap; First rectification circuit comprises diode D1 and D2, the anode of diode D1 is connected with first tap of the secondary winding of transformer T1, the anode of diode D2 is connected with second tap of the secondary winding of transformer T1, the negative electrode of diode D1 and diode D2 all is coupled to the output positive bus-bar, and the centre cap of the secondary winding of transformer T1 is coupled to the output negative busbar.
The second controlled resonant converter circuit 2 comprises second resonant circuit 21, transformer T2 and second rectification circuit in sequential series; Second rectification circuit can be bridge rectifier or synchronous rectification; Second resonant circuit 21 comprises switching tube S3, S4, capacitor C r3, Cr4, diode Dc3, Dc4 and transformer Lr2; Wherein, the end that first end of switching tube S3 is connected with the output of the second voltage pre-regulator circuit 4, second end of switching tube S3 and first end of switching tube S4 are connected and are connected to the former limit of transformer T2 winding, second end of switching tube S4 is connected to the input negative busbar; The end that the end of capacitor C r3 is connected with the output of the second voltage pre-regulator circuit 4, the other end of capacitor C r3 is connected and is connected to the former limit winding of transformer Lr2 with the end of capacitor C r4, the other end of capacitor C r4 is connected to the input negative busbar, and the other end of the former limit winding of transformer Lr1 is connected to the other end of the former limit of transformer T2 winding; The negative electrode of diode Dc3 is connected with the output of the second voltage pre-regulator circuit 4, the anode of diode Dc3 is connected with diode Dc4 negative electrode, and be connected with the end of the same name of the secondary winding of transformer Lr2, the anode of diode Dc4 is connected to the input negative busbar; The different name end of the secondary winding of transformer Lr2 is connected to the other end of transformer T2; The control end of switching tube S3 and switching tube S4 is coupled to control circuit 5.The secondary winding of this transformer T2 has 3 taps in addition, i.e. first tap, second tap and centre cap; Second rectification circuit comprises diode D3 and D4, the anode of diode D3 is connected with first tap of the secondary winding of transformer T2, the anode of diode D4 is connected with second tap of the secondary winding of transformer T2, the negative electrode of diode D3 and diode D4 all is coupled to the output positive bus-bar, and the centre cap of the secondary winding of transformer T2 is coupled to the output negative busbar.
Among second embodiment as shown in figure 12, the first controlled resonant converter circuit 1 comprises first resonant circuit 11, transformer T1 and first rectification circuit in sequential series; First resonant circuit 11 comprises switching tube S1, S2, capacitor C r1, Cr2, diode Dc1, Dc2 and inductance L r1; Transformer T1 comprises former limit first winding and former limit second winding; Wherein, first end of switching tube S1 is connected with the output of the first voltage pre-regulator circuit 3, second end of switching tube S1 is connected with first end of switching tube S2 and be connected to inductance L r1 one end, the other end of inductance L r1 is connected with an end of the former limit of transformer T1 first winding, be also connected to an end of the former limit of transformer T1 second winding simultaneously, second end of switching tube S2 is connected to the input negative busbar; The other end that the end of capacitor C r1 is connected with the output of the first voltage pre-regulator circuit 3, the other end of capacitor C r1 is connected and is connected to former limit first winding of transformer T1 with the end of capacitor C r2, the other end of capacitor C r2 is connected to the input negative busbar; The negative electrode of diode Dc1 is connected with the output of the first voltage pre-regulator circuit 3, the anode of diode Dc1 is connected with diode Dc2 negative electrode, and be connected with the other end of former limit second winding of transformer T1, the anode of diode Dc2 is connected to the input negative busbar; The control end of switching tube S1 and switching tube S2 is coupled to described control circuit.The secondary winding of this transformer T1 has 3 taps in addition, i.e. first tap, second tap and centre cap; First rectification circuit comprises diode D1 and D2, the anode of diode D1 is connected with first tap of the secondary winding of transformer T1, the anode of diode D2 is connected with second tap of the secondary winding of transformer T1, the negative electrode of diode D1 and diode D2 all is coupled to the output positive bus-bar, and the centre cap of the secondary winding of transformer T1 is coupled to the output negative busbar.
The second controlled resonant converter circuit 2 comprises second resonant circuit 21, transformer T2 and second rectification circuit in sequential series; Second resonant circuit 21 comprises switching tube S3, S4, capacitor C r3, Cr4, diode Dc3, Dc4 and inductance L r2; Transformer T2 comprises former limit first winding and former limit second winding; Wherein, first end of switching tube S3 is connected with the output of the second voltage pre-regulator circuit 4, second end of switching tube S3 is connected with first end of switching tube S4 and be connected to inductance L r2 one end, the other end of inductance L r2 is connected with an end of the former limit of transformer T2 first winding, be also connected to an end of the former limit of transformer T2 second winding simultaneously, second end of switching tube S4 is connected to the input negative busbar; The other end that the end of capacitor C r3 is connected with the output of the second voltage pre-regulator circuit 4, the other end of capacitor C r3 is connected and is connected to former limit first winding of transformer T2 with the end of capacitor C r4, the other end of capacitor C r4 is connected to the input negative busbar; The negative electrode of diode Dc3 is connected with the output of the second voltage pre-regulator circuit 4, the anode of diode Dc3 is connected with diode Dc4 negative electrode, and be connected with the other end of former limit second winding of transformer T2, the anode of diode Dc4 is connected to the input negative busbar; The control end of switching tube S3 and switching tube S4 is coupled to control circuit 5.The secondary winding of this transformer T2 has 3 taps in addition, i.e. first tap, second tap and centre cap; Second rectification circuit comprises diode D3 and D4, the anode of diode D3 is connected with first tap of the secondary winding of transformer T2, the anode of diode D4 is connected with second tap of the secondary winding of transformer T2, the negative electrode of diode D3 and diode D4 all is coupled to the output positive bus-bar, and the centre cap of the secondary winding of transformer T2 is coupled to the output negative busbar.
Shown in Fig. 7 and 12, the first voltage pre-regulator circuit 3 comprises inductance L 11, diode D11, capacitor C 11 and switching tube S11; Wherein, an end of inductance L 11 is connected with the input positive bus-bar, and the other end and the anode of diode D11 are connected and are connected to first end of switching tube S11; The negative electrode of diode D11 is as the output of the first voltage pre-regulator circuit 3, and is connected with an end of capacitor C 11, and the other end of capacitor C 11 is connected to the input negative busbar; Second end of switching tube S11 is connected to the input negative busbar, and the control end of switching tube S11 is coupled to control circuit 5.The second voltage pre-regulator circuit 4 comprises inductance L 12, diode D12, capacitor C 12 and switching tube S12; Wherein, an end of inductance L 12 is connected with the input positive bus-bar, and the other end and the anode of diode D12 are connected and are connected to first end of switching tube S12; The negative electrode of diode D121 is as the output of the described first voltage pre-regulator circuit, and is connected with an end of capacitor C 12, and the other end of capacitor C 12 is connected to the input negative busbar; Second end of switching tube S12 is connected to the input negative busbar, and the control end of switching tube S12 is coupled to control circuit 5.
In addition, for further filtering alternating component, make the direct current of output more level and smooth, filter capacitor Co is set in this DC-DC converter, after its concrete connected mode is the first controlled resonant converter circuit and the second controlled resonant converter circuit parallel connection, filter capacitor Co is arranged between itself and the positive negative output bus.
In force in order further to optimize circuit structure, the first voltage pre-regulator circuit 3, the second voltage pre-regulator circuit 4, the first controlled resonant converter circuit 1 and the second controlled resonant converter circuit 2 drive circuit by separately respectively are coupled to control circuit 5, shown in Fig. 7 and 12, promptly switching tube S1 and switching tube S2 are coupled to control circuit 5 by drive circuit 3; Switching tube S3 and switching tube S4 are coupled to control circuit 5 by drive circuit 4; Switching tube S11 is coupled to control circuit 5 by drive circuit 1; Switching tube S12 is coupled to control circuit 5 by drive circuit 2.
In practical work process, the output voltage of the output voltage of the first voltage pre-regulator circuit 3 (BOOST type) and the second voltage pre-regulator circuit 4 (BOOST type), the first controlled resonant converter circuit 1 (semi-bridge type) and the second controlled resonant converter circuit 2 (semi-bridge type) and the output current of the first controlled resonant converter circuit 1 and the second controlled resonant converter circuit 2 are as the input signal of control circuit 5.The first voltage pre-regulator circuit 3 and the second voltage pre-regulator circuit, 4 output positive bus-bars do not have coupling, has independent voltage loop, the output current of the first controlled resonant converter circuit 1 and the second controlled resonant converter circuit 2 is as the Voltage loop input signal of the first voltage pre-regulator circuit 3 and the second voltage pre-regulator circuit 4, regulate the first voltage pre-regulator circuit 3 and the second voltage pre-regulator circuit, 4 output voltages respectively, make the first controlled resonant converter circuit 1 identical, thereby make the first controlled resonant converter circuit 1 identical with the output current of the second controlled resonant converter circuit 2 with the output voltage of the second controlled resonant converter circuit 2.As shown in Figure 7, the input signal of control circuit comprises the output current separately of output voltage, two controlled resonant converters and the output voltage of two voltage pre-regulator circuit.When the humorous parameter of two controlled resonant converters not simultaneously, its voltage gain difference, be embodied in the output current difference of two controlled resonant converters, be input to control circuit with detected two-way controlled resonant converter current signal this moment, the two-way current signal is averaged, every road current signal and two-way current average are done computing afterwards as the feedback signal of the voltage pre-regulator circuit voltage loop that is connected with every road controlled resonant converter, and voltage pre-regulator circuit voltage makes the output current of every road controlled resonant converter identical thereby control circuit is regulated every road.The clamp winding of the controlled resonant converter circuit by regulating each branch road and the turn ratio of resonant inductance in addition, thus the current-limiting points of each controlled resonant converter circuit controlled.
The utility model is described by some embodiment, and those skilled in the art know, under the situation that does not break away from spirit and scope of the present utility model, can carry out various changes or equivalence replacement to these features and embodiment.In addition, under instruction of the present utility model, can make amendment to these features and embodiment can not break away from spirit and scope of the present utility model to adapt to concrete situation and material.Therefore, the utility model is not subjected to the restriction of specific embodiment disclosed herein, and all interior embodiment of claim scope that fall into the application belong to protection range of the present utility model.
Claims (10)
1, a kind of DC-DC converter, comprise at least two controlled resonant converter circuit and control circuit between positive and negative inlet highway and the positive negative output bus, it is characterized in that, between each controlled resonant converter circuit and positive and negative inlet highway, be provided with voltage pre-regulator circuit; Described control circuit is used to regulate the output voltage of each voltage pre-regulator circuit and the output voltage of DC-DC converter circuit.
2, DC-DC converter according to claim 1 is characterized in that, each controlled resonant converter circuit all is self-limiting controlled resonant converter circuit or the controlled resonant converter circuit with clamp winding.
3, DC-DC converter according to claim 1 and 2 is characterized in that, described DC-DC converter is included in the first controlled resonant converter circuit and the second controlled resonant converter circuit between positive and negative inlet highway and the positive negative output bus; The first controlled resonant converter circuit and and positive and negative inlet highway between be provided with the first voltage pre-regulator circuit; Between the second controlled resonant converter circuit and positive and negative inlet highway, be provided with the second voltage pre-regulator circuit; The first voltage pre-regulator circuit and the second voltage pre-regulator circuit are with misphase 180 degree work frequently; The first controlled resonant converter circuit and the second controlled resonant converter circuit are with misphase 90 degree work frequently.
4, DC-DC converter according to claim 3 is characterized in that, the described first controlled resonant converter circuit and the second controlled resonant converter circuit are half-bridge structures.
5, DC-DC converter according to claim 4 is characterized in that, the described first controlled resonant converter circuit comprises first resonant circuit in sequential series, transformer T1 and first rectification circuit; Described first resonant circuit comprises switching tube S1, S2, capacitor C r1, Cr2, diode Dc1, Dc2 and inductance L r1;
Wherein, the end that first end of switching tube S1 is connected with the output of the first voltage pre-regulator circuit, second end of switching tube S1 and first end of switching tube S2 are connected and are connected to the former limit of transformer T1 winding, second end of switching tube S2 is connected to the input negative busbar;
The end that the end of capacitor C r1 is connected with the output of the first voltage pre-regulator circuit, the other end of capacitor C r1 and the end of capacitor C r2 are connected and are connected to inductance L r1, be also connected to the anode of diode Dc1 simultaneously, the other end of capacitor C r2 is connected to the input negative busbar, and the other end of inductance L r1 is connected to the other end of the former limit of transformer T1 winding;
The negative electrode of diode Dc1 is connected with the output of the first voltage pre-regulator circuit, the anode of diode Dc1 is connected with diode Dc2 negative electrode, the anode of diode Dc2 is connected to the input negative busbar;
The control end of switching tube S1 and switching tube S2 is coupled to described control circuit.
6, DC-DC converter according to claim 5 is characterized in that, the described second controlled resonant converter circuit comprises second resonant circuit in sequential series, transformer T2 and second rectification circuit; Described second resonant circuit comprises switching tube S3, S4, capacitor C r3, Cr4, diode Dc3, Dc4 and inductance L r2;
Wherein, the end that first end of switching tube S3 is connected with the output of the second voltage pre-regulator circuit, second end of switching tube S3 and first end of switching tube S4 are connected and are connected to the former limit of transformer T2 winding, second end of switching tube S4 is connected to the input negative busbar;
The end that the end of capacitor C r3 is connected with the output of the second voltage pre-regulator circuit, the other end of capacitor C r3 and the end of capacitor C r4 are connected and are connected to inductance L r2, be also connected to the anode of diode Dc3 simultaneously, the other end of capacitor C r4 is connected to the input negative busbar, and the other end of inductance L r2 is connected to the other end of the former limit of transformer T2 winding;
The negative electrode of diode Dc3 is connected with the output of the second voltage pre-regulator circuit, the anode of diode Dc3 is connected with diode Dc4 negative electrode, the anode of diode Dc4 is connected to the input negative busbar;
The control end of switching tube S3 and switching tube S4 is coupled to described control circuit.
7, DC-DC converter according to claim 4 is characterized in that, the described first controlled resonant converter circuit comprises first resonant circuit in sequential series, transformer T1 and first rectification circuit; Described first resonant circuit comprises switching tube S1, S2, capacitor C r1, Cr2, diode Dc1, Dc2 and transformer Lr1;
Wherein, the end that first end of switching tube S1 is connected with the output of the first voltage pre-regulator circuit, second end of switching tube S1 and first end of switching tube S2 are connected and are connected to the former limit of transformer T1 winding, second end of switching tube S2 is connected to the input negative busbar;
The end that the end of capacitor C r1 is connected with the output of the first voltage pre-regulator circuit, the other end of capacitor C r1 is connected and is connected to the former limit winding of transformer Lr1 with the end of capacitor C r2, the other end of capacitor C r2 is connected to the input negative busbar, and the other end of the former limit winding of transformer Lr1 is connected to the other end of the former limit of transformer T1 winding;
The negative electrode of diode Dc1 is connected with the output of the first voltage pre-regulator circuit, the anode of diode Dc1 is connected with diode Dc2 negative electrode, and be connected with the end of the same name of the secondary winding of transformer Lr1, the anode of diode Dc2 is connected to the input negative busbar; The different name end of the secondary winding of transformer Lr1 is connected to the other end of transformer T1;
The control end of switching tube S1 and switching tube S2 is coupled to described control circuit.
8, DC-DC converter according to claim 7 is characterized in that, the described second controlled resonant converter circuit comprises second resonant circuit in sequential series, transformer T2 and second rectification circuit; Described second resonant circuit comprises switching tube S3, S4, capacitor C r3, Cr4, diode Dc3, Dc4 and transformer Lr2;
Wherein, the end that first end of switching tube S3 is connected with the output of the second voltage pre-regulator circuit, second end of switching tube S3 and first end of switching tube S4 are connected and are connected to the former limit of transformer T2 winding, second end of switching tube S4 is connected to the input negative busbar;
The end that the end of capacitor C r3 is connected with the output of the second voltage pre-regulator circuit, the other end of capacitor C r3 is connected and is connected to the former limit winding of transformer Lr2 with the end of capacitor C r4, the other end of capacitor C r4 is connected to the input negative busbar, and the other end of the former limit winding of transformer Lr1 is connected to the other end of the former limit of transformer T2 winding;
The negative electrode of diode Dc3 is connected with the output of the second voltage pre-regulator circuit, the anode of diode Dc3 is connected with diode Dc4 negative electrode, and be connected with the end of the same name of the secondary winding of transformer Lr2, the anode of diode Dc4 is connected to the input negative busbar; The different name end of the secondary winding of transformer Lr2 is connected to the other end of transformer T2;
The control end of switching tube S3 and switching tube S4 is coupled to described control circuit.
9, DC-DC converter according to claim 4 is characterized in that, the described first controlled resonant converter circuit comprises first resonant circuit in sequential series, transformer T1 and first rectification circuit; Described first resonant circuit comprises switching tube S1, S2, capacitor C r1, Cr2, diode Dc1, Dc2 and inductance L r1; Transformer T1 comprises former limit first winding and former limit second winding;
Wherein, first end of switching tube S1 is connected with the output of the first voltage pre-regulator circuit, second end of switching tube S1 is connected with first end of switching tube S2 and be connected to inductance L r1 one end, the other end of inductance L r1 is connected with an end of the former limit of transformer T1 first winding, be also connected to an end of the former limit of transformer T1 second winding simultaneously, second end of switching tube S2 is connected to the input negative busbar;
The other end that the end of capacitor C r1 is connected with the output of the first voltage pre-regulator circuit, the other end of capacitor C r1 is connected and is connected to former limit first winding of transformer T1 with the end of capacitor C r2, the other end of capacitor C r2 is connected to the input negative busbar;
The negative electrode of diode Dc1 is connected with the output of the first voltage pre-regulator circuit, the anode of diode Dc1 is connected with diode Dc2 negative electrode, and be connected with the other end of former limit second winding of transformer T1, the anode of diode Dc2 is connected to the input negative busbar;
The control end of switching tube S1 and switching tube S2 is coupled to described control circuit.
10, DC-DC converter according to claim 9 is characterized in that, the described second controlled resonant converter circuit comprises second resonant circuit in sequential series, transformer T2 and second rectification circuit; Described second resonant circuit comprises switching tube S3, S4, capacitor C r3, Cr4, diode Dc3, Dc4 and inductance L r2; Transformer T2 comprises former limit first winding and former limit second winding;
Wherein, first end of switching tube S3 is connected with the output of the second voltage pre-regulator circuit, second end of switching tube S3 is connected with first end of switching tube S4 and be connected to inductance L r2 one end, the other end of inductance L r2 is connected with an end of the former limit of transformer T2 first winding, be also connected to an end of the former limit of transformer T2 second winding simultaneously, second end of switching tube S4 is connected to the input negative busbar;
The other end that the end of capacitor C r3 is connected with the output of the second voltage pre-regulator circuit, the other end of capacitor C r3 is connected and is connected to former limit first winding of transformer T2 with the end of capacitor C r4, the other end of capacitor C r4 is connected to the input negative busbar;
The negative electrode of diode Dc3 is connected with the output of the second voltage pre-regulator circuit, the anode of diode Dc3 is connected with diode Dc4 negative electrode, and be connected with the other end of former limit second winding of transformer T2, the anode of diode Dc4 is connected to the input negative busbar;
The control end of switching tube S3 and switching tube S4 is coupled to described control circuit.
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| CNU2008201470409U CN201266889Y (en) | 2008-08-29 | 2008-08-29 | DC-DC converter |
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| CNU2008201470409U CN201266889Y (en) | 2008-08-29 | 2008-08-29 | DC-DC converter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101861019A (en) * | 2010-05-18 | 2010-10-13 | 重庆大学 | Driving power sources for lighting high-power LED array |
| CN101888731A (en) * | 2010-07-14 | 2010-11-17 | 成都芯源系统有限公司 | Driving circuit and driving method of light emitting diode |
| CN104079179A (en) * | 2014-07-09 | 2014-10-01 | 河北先控捷联电源设备有限公司 | Resonant converter and direct-current power supply |
| CN104578791A (en) * | 2013-10-15 | 2015-04-29 | 南京博兰得电子科技有限公司 | Resonant converters in parallel connection and method for controlling resonant converters |
| WO2019091051A1 (en) * | 2017-11-07 | 2019-05-16 | 深圳威迈斯电源有限公司 | Two-stage multipath parallel-connected current sharing circuit, current sharing method, storage device, and mobile terminal |
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2008
- 2008-08-29 CN CNU2008201470409U patent/CN201266889Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101861019A (en) * | 2010-05-18 | 2010-10-13 | 重庆大学 | Driving power sources for lighting high-power LED array |
| CN101888731A (en) * | 2010-07-14 | 2010-11-17 | 成都芯源系统有限公司 | Driving circuit and driving method of light emitting diode |
| CN101888731B (en) * | 2010-07-14 | 2013-11-13 | 成都芯源系统有限公司 | Driving circuit and driving method of light emitting diode |
| CN104578791A (en) * | 2013-10-15 | 2015-04-29 | 南京博兰得电子科技有限公司 | Resonant converters in parallel connection and method for controlling resonant converters |
| CN104578791B (en) * | 2013-10-15 | 2018-01-23 | 南京博兰得电子科技有限公司 | Controlled resonant converter in parallel and its control method |
| CN104079179A (en) * | 2014-07-09 | 2014-10-01 | 河北先控捷联电源设备有限公司 | Resonant converter and direct-current power supply |
| WO2019091051A1 (en) * | 2017-11-07 | 2019-05-16 | 深圳威迈斯电源有限公司 | Two-stage multipath parallel-connected current sharing circuit, current sharing method, storage device, and mobile terminal |
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Address after: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518055 No. 1001 Nanshan Chi Park B2 building 1-4 floor, building 6-10 Patentee after: Vitamin Technology Co., Ltd. Address before: 518057 Nanshan District science and Technology Industrial Park, Guangdong, Shenzhen Branch Road, No. Patentee before: Aimosheng Network Energy Source Co., Ltd. |
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Granted publication date: 20090701 |