Multi-phase voltage adjusting module
By interleaving switching circuit combinations and phase-shifting control signals in the power conversion module, the problems of efficiency and size limitations of the power conversion module under high power output are solved, achieving efficient power conversion and module miniaturization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2020-12-11
- Publication Date
- 2026-04-07
AI Technical Summary
Under high power output requirements, the number of out-of-phase control signals output by the controller in existing power conversion modules reaches the upper limit, which limits the number of out-of-phase parallel phases in the power conversion unit, making it difficult to further improve conversion efficiency and reduce module size.
By employing an interleaved arrangement of multiple switching circuits, with capacitors positioned between corresponding switching circuits, and controlling the switching circuit combinations via a phase-shifting control signal, each switching circuit draws charge from different capacitors, and the alternating current flowing through the same capacitor partially cancels out.
While reducing the number of capacitors, the power conversion efficiency is improved, current ripple and AC loss are reduced, and the size of the power conversion module is reduced.
Smart Images
Figure CN121813822A_ABST
Abstract
Description
[0001] This invention is a divisional application of the invention application filed on December 11, 2020, with application number 2020114631917 and title: Multiphase Voltage Regulation Module. Technical Field
[0002] This disclosure relates to a power conversion module, and more particularly to a power conversion module in which the switching circuits in a combination of different switching circuits are arranged in an interleaved manner. Background Technology
[0003] With the rapid development of technologies such as mobile communication and cloud computing, high-power power conversion modules are widely used in electronic products. Furthermore, due to the trend towards higher power and miniaturization in electronic products, improving the conversion efficiency and reducing the size of power conversion modules are primary considerations.
[0004] In existing power conversion modules, to meet high-power output requirements, N-phase power conversion units are typically connected in parallel, with their control signals staggered by 360 / N degrees. This reduces input and output current ripple and the number of input and output capacitors required, thereby reducing the size of the power conversion module and increasing power density. However, as output power demands increase, the number of staggered control signals output by the controller reaches its limit, thus limiting the number of phases that can be connected in parallel with staggered phases within the power conversion units.
[0005] Therefore, developing a power conversion module that can improve upon the aforementioned existing technologies is an urgent need at present. Summary of the Invention
[0006] The purpose of this disclosure is to provide a power conversion module comprising a plurality of switching circuit combinations and a plurality of capacitors. Each switching circuit combination is controlled by a corresponding control signal and includes a plurality of switching circuits. The switching circuits in different switching circuit combinations are interleaved, and capacitors are disposed between corresponding switching circuits. Therefore, when a switching circuit combination is operated by a corresponding control signal, each switching circuit in the combination draws charge from a different capacitor. Furthermore, the control signals corresponding to different switching circuit combinations are partially out of phase, so the alternating current flowing through the same capacitor can be partially canceled out. Thus, the power conversion module of this disclosure can achieve the same power conversion efficiency with a smaller number of capacitors, while reducing current ripple, AC losses, and the size of the power conversion module, thereby improving the power conversion efficiency of the power conversion module.
[0007] According to the concept of this disclosure, a power conversion module is provided, comprising a multilayer printed circuit board, a switching device, a control device, and a capacitor device. The multilayer printed circuit board has opposing first and second sides. The switching device includes two switching circuit combinations disposed on the first side of the multilayer printed circuit board, wherein each switching circuit combination includes at least two switching circuits connected in parallel, and each switching circuit includes a switching unit, wherein the two switching circuit combinations include a first switching circuit combination and a second switching circuit combination. The control device is configured to output a first control signal and a second control signal to control the switching circuits of the first and second switching circuit combinations, respectively, wherein the first and second control signals are out of phase. The capacitor device is electrically connected in parallel to the input terminal of the power conversion module and includes a plurality of capacitors disposed on the first side of the multilayer printed circuit board. In one direction, the switching units in the first and second switching circuit combinations are alternately placed, and the plurality of capacitors in the capacitor device are respectively placed adjacent to two adjacent switching units. Attached Figure Description
[0008] Figure 1A This is a schematic diagram of the circuit structure of the power conversion module 1 according to a preferred embodiment of the present disclosure.
[0009] Figure 1B for Figure 1A Schematic diagram of the first embodiment of the switching circuit
[0010] Figure 1C This is a schematic diagram of the switch circuit and capacitor arrangement according to another preferred embodiment of the present disclosure.
[0011] Figure 1D This is a schematic diagram of the switch circuit and capacitor arrangement according to another preferred embodiment of the present disclosure.
[0012] Figure 1E for Figure 1A The diagram shows the arrangement of the switching circuit when it is set in a ring.
[0013] Figure 1F for Figure 1A A schematic diagram of the current waveform of power conversion module 1.
[0014] Figure 2A This is a schematic diagram of the circuit structure of the power conversion module 1a according to another preferred embodiment of the present disclosure.
[0015] Figure 2B for Figure 2A A schematic diagram of the switch circuit layout.
[0016] Figure 3A This is a schematic diagram of the circuit structure of the power conversion module 1b according to another preferred embodiment of the present disclosure.
[0017] Figure 3B for Figure 3A A schematic diagram of the layout of the switching circuit when it is set in a straight line.
[0018] Figure 3C for Figure 3A The diagram shows the arrangement of the switching circuit when it is set in a ring.
[0019] Figure 3D This is a schematic diagram of the switch circuit layout according to another preferred embodiment of this disclosure.
[0020] Figure 3E This is a schematic diagram of the switch circuit layout according to another preferred embodiment of this disclosure.
[0021] Figure 4A This is a three-dimensional structural diagram of a power conversion module according to another preferred embodiment of the present disclosure.
[0022] Figure 4B for Figure 4A A schematic diagram of the layout of the switching circuits when arranged in the first configuration.
[0023] Figure 4C for Figure 4B A schematic diagram of the phases of the control signals corresponding to the switching circuits.
[0024] Figure 4D for Figure 4A The diagram shows the layout of the switching circuit when arranged in the second configuration.
[0025] Figure 4E for Figure 4D A schematic diagram of the phases of the control signals corresponding to the switching circuits.
[0026] Figure 5A for Figure 4A A schematic diagram of the exploded structure of the power conversion module.
[0027] Figure 5B for Figure 5A A schematic diagram of the magnetic core assembly 2.
[0028] Explanation of reference numerals in the attached figures: 1, 1a, 1b: Power conversion modules 10: Multilayer printed circuit boards 100, 100a, 100b: Control devices 1000: Drive unit PWM1, PWM2, ..., PWMN: Control signals 101, 102, ..., 10M, 101a, 102a, 103a, 101b, 102b, 103b: Switching devices 102: Capacitor Device 2: Magnetic core assembly 20: Magnetic ring 20a: Part 1 20b: Part Two 20c: Sector 20d: air gap 3: Holes 11: First Page 12: Second page 1-1, 1-2, 1-3, 1-4, 2-1, 2-2, 2-3, 2-4…, (N-1)-1, N-1: Switching circuit S1-1, S1-2, S1-3, S1-4, S2-1, S2-2, S2-3, S2-4…, S(N-1)-1, SN-1: Switching Units C1: First capacitor C2: Second capacitor R1, R2, R(N-1), RN: Resistors L1-1, L1-2, L1-3, L2-1, L2-2, L2-3..., L(N-1)-1, L(N-1)-2, LN-1, LN-2: Inductor C, C3, C4…C(N-1), CN: Capacitors Vin: Input voltage Vout: Output voltage i1-1, i1-2, i2-1, i2-2: Current L1: First direction L2: Second direction Detailed Implementation
[0029] Some typical embodiments embodying the features and advantages of this disclosure will be described in detail in the following description. It should be understood that this disclosure can be varied in different implementations without departing from the scope of this disclosure, and the descriptions and illustrations therein are for illustrative purposes only and are not intended to limit this disclosure.
[0030] Figure 1A This is a schematic diagram of the circuit structure of the power conversion module 1 according to a preferred embodiment of the present disclosure. The power conversion module 1 of the present disclosure includes a switching device 101, a capacitor device, and a control device 100. The switching device 101 includes a plurality of switching circuit combinations, such as... Figure 1AAs shown, the switching device 101 includes a first switching circuit combination and a second switching circuit combination, which are connected in parallel to the input terminal of the power conversion module 1. The capacitor device includes a plurality of capacitors connected in parallel, and these capacitors are also connected in parallel to the input terminal of the power conversion module 1, serving as the input capacitors of the power conversion module 1 to reduce the ripple of the input current, thereby reducing AC losses. The control device 100 is configured to output a plurality of control signals to control the plurality of switching circuit combinations respectively.
[0031] The first switching circuit combination includes at least two switching circuits, such as Figure 1A The switching circuits 1-1 and 1-2, and the second switching circuit combination includes at least two switching circuits, such as Figure 1A The switching circuits 2-1 and 2-2 are provided. Each switching circuit is connected in parallel. The control signals corresponding to different switching circuits in each switching circuit combination are the same. The number of switching circuit combinations in the switching device 101 is unlimited, and the number of switching circuits in each switching circuit combination is also unlimited. The following explanation uses an example where the switching device 101 includes two switching circuit combinations, and each switching circuit combination includes two switching circuits.
[0032] At Figure 1A In this embodiment, switch circuits 1-1 and 1-2 in the first switch circuit combination and switch circuits 2-1 and 2-2 in the second switch circuit combination are connected in parallel. The first terminals of the switch circuits in each switch circuit combination, such as the first terminals of switch circuits 1-1 and 1-2 in the first switch circuit combination, and switch circuits 2-1 and 2-2 in the second switch circuit combination, are electrically connected to each other and to one end of a capacitor device, the other end of which is grounded. The second terminals of the switch circuits in each switch circuit combination are electrically connected to each other and to the output terminal of the power conversion module 1.
[0033] The control device 100 is configured to output a first control signal PWM1 and a second control signal PWM2, wherein the first control signal PWM1 controls a plurality of switching circuits of a first switching circuit combination, such as switching circuits 1-1 and 1-2, and the second control signal PWM2 controls a plurality of switching circuits of a second switching circuit combination, such as switching circuits 2-1 and 2-2.
[0034] Refer again Figure 1AEach switching circuit includes a switching unit and an inductor. Switching circuit 1-1 includes a switching unit S1-1 and an inductor L1-1, switching circuit 1-2 includes a switching unit S1-2 and an inductor L1-2, switching circuit 2-1 includes a switching unit S2-1 and an inductor L2-1, and switching circuit 2-2 includes a switching unit S2-2 and an inductor L2-2. Furthermore, a first control signal PWM1 controls switching units S1-1 and S1-2, and a second control signal PWM2 controls switching units S2-1 and S2-2.
[0035] In one embodiment, the capacitor device includes a first capacitor C1, a second capacitor C2, and a third capacitor C3, wherein the first capacitor C1, the second capacitor C2, and the third capacitor C3 are connected in parallel. One end of the first capacitor C1, one end of the second capacitor C2, and one end of the third capacitor C3 are electrically connected and electrically connected to the first terminal of each switching circuit. The other ends of the first capacitor C1, the second capacitor C2, and the third capacitor C3 are all grounded. The first capacitor C1, the second capacitor C2, or the third capacitor C3 can be a single capacitor or multiple capacitors placed adjacently, as illustrated in this figure only. Furthermore, the capacitance values of the first capacitor C1, the second capacitor C2, and the third capacitor C3 are not limited and can be designed according to actual needs.
[0036] Figure 1B for Figure 1A A schematic diagram of the layout of the first embodiment of the switching circuit. The switching circuits of each switching circuit combination are disposed on a printed circuit board (e.g., Figure 4A On the printed circuit board 10). On the printed circuit board, the relative positions of each switch circuit are as follows: Figure 1B As shown, along the first direction L1, switch units S1-1, S2-1, S1-2, and S2-2 are arranged sequentially. A first capacitor C1 is placed adjacent to switch units S1-1 and S2-1, a third capacitor C3 is placed adjacent to switch units S2-1 and S1-2, and a second capacitor C2 is placed adjacent to switch units S1-2 and S2-2. In this embodiment, the first capacitor C1 is disposed between switch unit S1-1 and switch unit S2-1, the third capacitor C3 is disposed between switch unit S2-1 and switch unit S1-2, and the second capacitor C2 is disposed between switch unit S1-2 and switch unit S2-2. However, this is not a limitation; the positions of the first capacitor C1, the second capacitor C2, and the third capacitor C3 can be determined according to the actual situation. It is only necessary to satisfy that, in the first direction L1, the first capacitor C1 is disposed adjacent to switch unit S1-1 and switch unit S2-1, the second capacitor C2 is disposed adjacent to switch unit S1-2 and switch unit S2-2, and the third capacitor C3 is disposed adjacent to switch unit S2-1 and switch unit S1-2. For example... Figure 1C or Figure 1DThe indicated location.
[0037] In one embodiment, the first direction L1 is a straight line direction, such as the long side direction or the short side direction of the printed circuit board.
[0038] In other embodiments, the plurality of switching circuits are not limited to being arranged in a straight line, such as Figure 1E As shown, switches S1-1, S2-1, S1-2, and S2-2 are arranged in a ring in sequence. The first capacitor C1 is placed adjacent to switch units S1-1 and S2-1. Part of the third capacitor C3 is placed adjacent to switch units S2-1 and S1-2, and the remaining third capacitor C3 is placed adjacent to switch units S1-1 and S2-2. The second capacitor C2 is placed adjacent to switch units S1-2 and S2-2. Similarly... Figure 1B-1D The relative position of the capacitor and the switching unit. Figure 1E The first capacitor C1, the second capacitor C2, and the third capacitor C3 do not necessarily need to be placed in the middle of the two switching units; they only need to be placed adjacent to the corresponding switching units.
[0039] Combination Figure 1A , Figure 1B Assume that the AC currents flowing through switch circuits 1-1 and 1-2 in the first switch circuit assembly are i1-1 and i1-2, respectively, and the AC currents flowing through switch circuits 2-1 and 2-2 in the second switch circuit assembly are i2-1 and i2-2, respectively. Since the first capacitor C1, the second capacitor C2, and the third capacitor C3 are all connected in parallel between the first terminal of each switch circuit and ground, the sum of the AC currents flowing through the first capacitor C1, the second capacitor C2, and the third capacitor C3 is equal to the sum of the AC currents i1-1, i1-2, i2-1, and i2-2. Part or all of the AC currents i1-1 and i2-1 flow through the first capacitor C1, and part or all of the AC currents i1-2 and i2-2 flow through the second capacitor C2. Therefore, when the first control signal PWM1 controls the switching units S1-1 and S1-2 to be turned on simultaneously, the switching units S1-1 and S1-2 draw charges from the first capacitor C1 and the second capacitor C2, respectively. When the second control signal PWM2 controls the switching units S2-1 and S2-2 to be turned on simultaneously, the switching units S2-1 and S2-2 draw charges from the first capacitor C1 and the second capacitor C2, respectively. Moreover, because the first control signal PWM1 and the second control signal PWM2 are out of phase, the switching units S1-1 and S2-1 do not draw charges from the first capacitor C1 at the same time, the switching units S1-2 and S2-2 do not draw charges from the second capacitor C2 at the same time, and the switching units S2-1 and S1-2 do not draw charges from the third capacitor C3 at the same time. Thus, the AC current ripple cancellation effect exists in the first capacitor C1, the second capacitor C2, and the third capacitor C3.
[0040] Please also refer to Figure 1F , Figure 1F for Figure 1A The diagram shows the current waveform of the power conversion module 1. Because the first control signal PWM1 controls the simultaneous conduction of switching units S1-1 and S1-2, and the second control signal PWM2 controls the simultaneous conduction of switching units S2-1 and S2-2, the AC current i1-1 is the same as the AC current i1-2, and the AC current i2-1 is the same as the AC current i2-2. (Refer to...) Figure 1F Since the first control signal PWM1 and the second control signal PWM2 are out of phase, the trends of AC currents i1-1 and i2-1 are opposite in the intervals t0-t1 and t2-t3. Therefore, the AC currents flowing through the first capacitor C1 partially cancel each other out during these time periods. Similarly, the trends of AC currents i1-2 and i2-2 are opposite in the intervals t0-t1 and t2-t3. Therefore, the AC currents flowing through the second capacitor C2 also partially cancel each other out during these time periods, thereby reducing the input current ripple and the AC loss caused by the current ripple. Therefore, by adopting the arrangement of this embodiment, under the condition of the same input current ripple magnitude, a smaller capacitance value or a smaller number of capacitors can be selected to achieve the required ripple effect. Furthermore, the loss and size of the power conversion module can be reduced.
[0041] In some embodiments, the first control signal PWM1 and the second control signal PWM2 are out of phase by 180 degrees, but this is not the only embodiment, and the phase misalignment angle can be set according to the specific situation.
[0042] The power conversion module 1 of this disclosure utilizes the interleaved arrangement of switching circuits in different switching circuit combinations, with capacitors positioned adjacent to corresponding switching circuits in different switching circuit combinations. Therefore, when a switching circuit combination is activated by a corresponding control signal, each switching circuit in each combination draws charge from a different capacitor. Furthermore, the control signals corresponding to the different switching circuit combinations are partially out of phase, thus partially canceling out the alternating current flowing through the same capacitor. Consequently, the power conversion module of this disclosure can achieve the same power conversion efficiency with a smaller number of capacitors, while reducing current ripple, AC losses, and the size of the power conversion module, thereby improving the power conversion efficiency of the power conversion module.
[0043] In some embodiments, the number of switching devices in the power conversion module 1 is not limited to one. The following example illustrates an implementation where the power conversion module 1a includes M switching devices. Figure 2AAs shown, the power conversion module 1a includes M switching devices 101 to 10M, where M is a positive integer greater than 2. The M switching devices 101 to 10M are connected in parallel, and the first terminals of all M switching devices are connected to one end of a capacitor device, while the other end of the capacitor device is grounded. The connection method of each switching device can be referred to... Figure 1A Details will not be elaborated here. The Mth switching device 10M includes an (N-1)th switching circuit combination and an Nth switching circuit combination, where the number of N is twice the number of M. The (N-1)th switching circuit combination includes two switching circuits (N-1)-1 and (N-1)-2, with corresponding switching units S(N-1)-1 and S(N-1)-2, respectively. The Nth switching circuit combination includes two switching circuits N-1 and N-2, with corresponding switching units SN-1 and SN-2, respectively.
[0044] Refer again Figure 2A and Figure 2B The capacitor device of the power conversion module 1a includes 3M capacitors, namely the first capacitor C1, the second capacitor C2, the third capacitor C3, ... the 3M-2 capacitor C3M-2, the 3M-1 capacitor C3M-1, and the 3M capacitor C3M.
[0045] Reference Figure 2B , Figure 2B This diagram shows the layout of the switching circuits for M switching devices. Each switching circuit is mounted on a printed circuit board (e.g., Figure 4A On the printed circuit board 10), M switching devices 101 to 10M are stacked along a second direction L2, wherein the second direction L2 is perpendicular to the first direction L1. The relative positions of the switching units of each switching device are referenced. Figure 1B As shown, along the first direction L1, the switching units of different switching circuit combinations in each switching device are arranged alternately. For example, the switching unit 101 is arranged in sequence as switching unit S1-1, switching unit S2-1, switching unit S1-2 and switching unit S2-2, the switching unit 102 is arranged in sequence as switching unit S3-1, switching unit S4-1, switching unit S3-2 and switching unit S4-2, and so on. The switching unit 10M is arranged in sequence as switching unit S(N-1)-1, switching unit SN-1, switching unit S(N-1)-2 and switching unit SN-2.
[0046] Refer again Figure 2BThe capacitors of the capacitor device are disposed on the printed circuit board and are respectively placed adjacent to the adjacent switching units in a power supply device. In the switching device 101, the first capacitor C1 is disposed adjacent to the switching units S1-1 and S2-1, the second capacitor C2 is disposed adjacent to the switching units S1-2 and S2-2, and the third capacitor C3 is disposed adjacent to the switching units S2-1 and S1-2. In the switching device 102, the fourth capacitor C4 is disposed adjacent to the switching units S3-1 and S4-1, the fifth capacitor C5 is disposed adjacent to the switching units S3-2 and S4-2, and the sixth capacitor C6 is disposed adjacent to the switching units S4-1 and S3-2. Similarly, in the switching device 10M, the 3M-2 capacitor C3M-2 is located near the switching units S(N-1)-1 and SN-1, the 3M-1 capacitor C3M-1 is located near the switching units S(N-1)-2 and SN-2, and the 3M capacitor C3M is located near the switching units SN-1 and S(N-1)-2.
[0047] The control device 100a of the power conversion module 1a is based on the output control signals PWM1~PWMN to control N switching circuit combinations respectively. The control signals PWM1~PWMN are sequentially phase-shifted. Combined with the staggered layout of the switching circuits as described above, the control signals of two adjacent switching circuits are phase-shifted, and the two adjacent switching circuits do not simultaneously draw charge from the adjacent capacitors, thereby reducing the input current ripple.
[0048] In some embodiments, the number of switching circuits in the switching circuit combination of the power conversion module 1 is not limited to two. The following examples illustrate implementations where the first switching circuit combination of the power conversion module 1b includes three switching circuits 1-1, 1-2, and 1-3, and the second switching circuit combination includes three switching circuits 2-1, 2-2, and 2-3. The capacitor device includes four capacitors: a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, and a fifth capacitor C5. Figure 3A and 3B As shown, the switching circuits are connected in parallel. Switching circuits 1-1, 1-2, 1-3, 2-1, 2-2, and 2-3 each have corresponding switching units S1-1, S1-2, S1-3, S2-1, S2-2, and S2-3, respectively. (Refer to...) Figure 3BSwitching units S1-1, S2-1, S1-2, S2-2, S1-3, and S2-3 are sequentially arranged along the first direction L1 on a printed circuit board. A first capacitor C1 is located adjacent to switching units S1-1 and S2-1, a second capacitor C2 is located adjacent to switching units S1-2 and S2-2, a fourth capacitor C4 is located adjacent to switching units S1-3 and S2-3, a third capacitor C3 is located adjacent to switching units S2-1 and S1-2, and a fifth capacitor C5 is located adjacent to switching units S2-2 and S1-3. The control device 100b is configured to output a first control signal PWM1 and a second control signal PWM2 to control the switching units of the corresponding switching circuit combinations. In some embodiments, such as... Figure 3C As shown, the switching units S1-1, S2-1, S1-2, S2-2, S1-3, and S2-3 are arranged sequentially in a ring. The capacitors of the capacitor bank are arranged adjacent to the adjacent switching units. The arrangement principle can be referenced accordingly. Figure 1C and Figure 3B As shown, no further details will be provided.
[0049] In some embodiments, the number of switching circuits in each switching circuit combination of the power conversion module is four. The power conversion module in the following example includes a switching device, and the circuit diagram of the switching device can be found in [reference needed]. Figure 1A and Figure 3A The difference lies in that each switching circuit combination contains four switching circuits. Furthermore, the power conversion module includes two control signals, PWM1 and PWM2, which are out of phase. One switching circuit combination includes switching circuits 1-1, 1-2, 1-3, and 1-4, controlled by control signal PWM1; another switching circuit combination includes switching circuits 2-1, 2-2, 2-3, and 2-4, controlled by control signal PWM2. The capacitor bank includes multiple capacitors, such as... Figure 3D As shown, the switching circuits are connected in parallel. Switching circuits 1-1, 1-2, 1-3, and 1-4 have corresponding switching units S1-1, S1-2, S1-3, and S1-4, respectively; switching circuits 2-1, 2-2, 2-3, and 2-4 have corresponding switching units S2-1, S2-2, S2-3, and S2-4, respectively. Figure 3DAs shown, on the printed circuit board, switch units S1-1, S2-1, S1-3, and S2-3 are arranged sequentially along the first direction L1. A portion of the capacitors in the capacitor bank are placed adjacent to switch units S1-1 and S2-1, a portion of the capacitors are placed adjacent to switch units S2-1 and S1-3, and a portion of the capacitors are placed adjacent to switch units S1-3 and S2-3. Switch units S1-2, S2-2, S1-4, and S2-4 are arranged sequentially along the first direction L1 and stacked sequentially along the L2 direction with switch units S1-1 and S2-1 and switch units S1-3 and S2-3. A portion of the capacitors are placed adjacent to switch units S1-2 and S2-2, a portion of the capacitors are placed adjacent to switch units S2-2 and S1-4, and a portion of the capacitors are placed adjacent to switch units S1-4 and S2-4. The relative positions of the switch units in the second direction L2 are not restricted. Figure 3D As shown, switch unit S1-2 is disposed adjacent to switch unit S1-1, switch unit 2-2 is disposed adjacent to switch unit S2-1, switch unit S1-4 is disposed adjacent to switch unit S1-3, and switch unit S2-4 is disposed adjacent to switch unit S2-3. In another embodiment, as... Figure 3E As shown, switching units S2-2, S1-2, S2-4, and S1-4 are stacked sequentially with switching units S1-1, S2-1, S1-3, and S2-3 along the L2 direction, respectively. The staggered arrangement of the switching circuits along the L1 direction or along both the L1 and L2 directions in this switching device ensures that the control signals of adjacent switching circuits are out of phase, preventing adjacent switching circuits from simultaneously drawing charge from nearby capacitors, thereby reducing input current ripple.
[0050] Figure 4A The diagram shows the structure of the power conversion module. In this embodiment, the power conversion module includes three switching devices 101a, 102a and 103a, and each switching device includes two switching circuit combinations. Each switching circuit combination has an implementation of four switching circuits. However, the number of switching devices and the number of switching circuits in each switching circuit combination are not limited.
[0051] like Figures 4A to 4CAs shown, the power switch module also includes a multilayer printed circuit board 10, which has a first surface 11 and a second surface 12 facing each other, and switching devices 101a, 102a, and 103a are disposed on the first surface 11. Switching device 101a has a first switching circuit assembly and a second switching circuit assembly, wherein the first switching circuit assembly includes four switching circuits 1-1, 1-2, 1-3, and 1-4, and the second switching circuit assembly includes four switching circuits 2-1, 2-2, 2-3, and 2-4. Switching device 102a has a first switching circuit assembly and a second switching circuit assembly, wherein the two switching circuit assemblies respectively have four switching circuits 3-1, 3-2, 3-3, and 3-4 and four switching circuits 4-1, 4-2, 4-3, and 4-4. The switching device 103a has a first switching circuit combination and a second switching circuit combination, and the two switching circuit combinations each have four switching circuits 5-1, 5-2, 5-3, 5-4 and four switching circuits 6-1, 6-2, 6-3, 6-4 respectively.
[0052] In this embodiment, in the switching device 101a, the switching circuits 1-1, 1-2, 1-3, 1-4, 2-1, 2-2, 2-3 and 2-4 respectively have corresponding switching units S1-1, S1-2, S1-3, S1-4, S2-1, S2-2, S2-3 and S2-4. In this configuration, switch units S1-1, S2-1, S1-3, and S2-3 are arranged sequentially along the straight line of the first direction L1, and switch units S1-2, S2-2, S1-4, and S2-4 are also arranged sequentially along the straight line of the first direction L1. Furthermore, in the second direction L2, different switch units of the same switch circuit combination are arranged adjacently, for example, switch units S1-1 and S1-2 in the same switch circuit combination are arranged adjacently. Therefore, switch units S1-2, S2-2, S1-4, and S2-4 are respectively arranged with switch units S1-1, S2-1, S1-3, and S2-3 on the second direction L2. Switching devices 102a and 103a are stacked on top of switching device 101a in the second direction L2. The arrangement of the switches in switching devices 102a and 103a is the same as the arrangement method and sequence of the switches in switching device 101a, and will not be described again here.
[0053] Please refer to the following: Figure 4C , Figure 4C for Figure 4BThe diagram illustrates the phase of the control signals corresponding to the switches. The control device outputs six control signals, PWM1-PWM6, which control the corresponding switch circuit combinations. Switches 101a, 102a, and 103a are also partially out of phase with each other in the second direction L2. Specifically, in the second direction L2, the control signal controlling any switch circuit combination in switch 102a is partially out of phase with the control signal controlling the corresponding switch circuit combination in switch 101a, and the control signal controlling any switch circuit combination in switch 103a is partially out of phase with the control signal controlling the corresponding switch circuit combination in switch 102a. By partially out of phase with each other in the second direction L2, the number of input capacitors, input and output current ripple, and AC losses are further reduced. In the switching device 101a of this embodiment, the control signal controlling the first switching circuit combination is 180 degrees out of phase with the control signal controlling the second switching circuit combination, and the control signal controlling the first switching circuit combination of the switching device 102a is 60 degrees out of phase with the control signal controlling the first switching circuit combination of the switching device 101a, and the control signal controlling the first switching circuit combination of the switching device 103a is 60 degrees out of phase with the control signal controlling the first switching circuit combination of the switching device 102a. The phase angle is not limited to these values; it is only necessary to ensure that different switching circuit combinations do not simultaneously draw charge from capacitors adjacent to those different switching circuit combinations.
[0054] In some embodiments, the switches are arranged in a second arrangement; please refer to [link to relevant documentation]. Figure 4D and 4E The second arrangement of the switches in this embodiment is the same as... Figure 4B The difference in the first arrangement is only that, in the second direction L2, in any switching device, any switching unit in the first switching circuit combination is adjacent to the corresponding switching unit in the second switching circuit combination. For example... Figure 4D Switching units S1-2, S2-2, S1-4 and S2-4 are respectively provided on the second direction L2. Figure 4E for Figure 4D A phase diagram of the control signals corresponding to each switch. It can be seen that in the second direction L2, adjacent switch units are also controlled in staggered phases. This arrangement can further reduce input current ripple.
[0055] Please also refer to Figure 4A and 5A , Figure 5A for Figure 4AThe diagram shows the exploded structure of the power conversion module. The power conversion module also includes a plurality of magnetic core assemblies 2, which are disposed on the inner layer of the multilayer printed circuit board 10. Any two switching circuits in the first switching circuit combination share the magnetic core assembly 2 with any two switching circuits in the second switching circuit combination. For example, the switching units S1-1 and S1-2 of switching circuits 1-1 and 1-2 in the first switching circuit combination share the magnetic core assembly 2 with the switching units S2-1 and S2-2 of switching circuits 2-1 and 2-2 in the second switching circuit combination. In this embodiment, the two switching circuit combinations each have a corresponding magnetic core assembly 2. To reduce the number of magnetic core assemblies 2 and the assembly complexity, magnetic integration technology is used to group the plurality of magnetic core assemblies 2 into magnetic sets, thereby improving the efficiency of the power conversion module and reducing the number of magnetic core assemblies 2.
[0056] Please see Figure 5B , Figure 5B for Figure 5A A schematic diagram of the magnetic core assembly 2. The magnetic core assembly 2 includes two connected magnetic rings 20. Each magnetic ring 20 includes a first part 20a, a second part 20b, and a sector 20c connecting the first part 20a and the second part 20b. There is an air gap 20d between the first part 20a and the second part 20b, and the air gap 20d is connected to the hole 3 in the middle of the magnetic ring 20.
[0057] Please also refer to Figure 5A and Figure 5B The power conversion module also includes at least one copper-plated via (not shown), wherein one end of the via is electrically connected to the corresponding switching circuit, and the other end of the via is electrically connected to the second surface 12 of the multilayer printed circuit board 10. The via serves as a winding passing through the hole 3 of the magnetic core assembly 2 and forms an inductance of the corresponding switching circuit with the magnetic core assembly 2.
[0058] In each magnetic ring 20, the via acts as a winding passing through the hole 3 of the magnetic core assembly 2 to form two inductors. These two inductors correspond to two adjacent switching circuits in the same switching circuit assembly, such as... Figure 5A The switch circuits 1-1 and 1-2 shown are such that the AC magnetic flux generated by the two inductors at least partially cancels each other out, and the DC magnetic flux generated by the two inductors at least partially cancels each other out. Similarly, switch circuits 2-1 and 2-2 each correspond to an inductor, and the AC magnetic flux generated by the two inductors at least partially cancels each other out, and the DC magnetic flux generated by the two inductors at least partially cancels each other out.
[0059] In summary, this disclosure provides a power conversion module in which the switching circuits in a combination of dissimilar switching circuits are interleaved, and capacitors are placed between corresponding switches. Therefore, when the switching circuit combination is operated by a corresponding control signal, each switching circuit in the combination draws charge from a different capacitor. Furthermore, the control signals corresponding to the dissimilar switching circuit combinations are partially out of phase, so the AC current flowing through the same capacitor can be partially canceled out. Thus, the power conversion module of this disclosure can achieve the same power conversion efficiency with a smaller number of capacitors, while reducing current ripple, AC losses, and the size of the power conversion module, thereby improving the power conversion efficiency of the power conversion module.
[0060] It should be noted that the above are merely preferred embodiments for illustrating this disclosure, and this disclosure is not limited to the described embodiments. The scope of this disclosure is determined by the claims. Furthermore, this disclosure can be modified in various ways by those skilled in the art, but all such modifications will not depart from the protection sought by the claims.
Claims
1. A multiphase voltage regulation module, characterized in that, Include: A printed circuit board; A first switching device is disposed on the printed circuit board, including a first-phase switching circuit, a second-phase switching circuit, a third-phase switching circuit, and a fourth-phase switching circuit. The first-phase switching circuit and the second-phase switching circuit are adjacent and their projections overlap in a first direction. The third-phase switching circuit and the first-phase switching circuit are adjacent and their projections overlap in a second direction. The fourth-phase switching circuit and the second-phase switching circuit are adjacent and their projections overlap in the second direction. The third-phase switching circuit and the fourth-phase switching circuit are adjacent and their projections overlap in the first direction. Each of the first-phase, second-phase, third-phase, and fourth-phase switching circuits receives a corresponding control signal, and a plurality of the control signals are sequentially phase-shifted. Each of the aforementioned switching circuits has a first terminal electrically connected to an input terminal, and a second terminal of each of the aforementioned switching circuits is electrically connected to a first terminal of a corresponding output inductor. The second terminals of each of the plurality of the aforementioned output inductors are electrically connected in parallel to an output terminal.
2. The multiphase voltage regulation module as described in claim 1 further includes a second switching device disposed on the printed circuit board, comprising a fifth-phase switching circuit, a sixth-phase switching circuit, a seventh-phase switching circuit, and an eighth-phase switching circuit, wherein the first-phase switching circuit and the fifth-phase switching circuit receive the same control signal, the second-phase switching circuit and the sixth-phase switching circuit receive the same control signal, the third-phase switching circuit and the seventh-phase switching circuit receive the same control signal, and the fourth-phase switching circuit and the eighth-phase switching circuit receive the same control signal.
3. The multiphase voltage regulation module as described in claim 1 further includes a second switching device disposed on the printed circuit board, comprising a fifth-phase switching circuit, a sixth-phase switching circuit, and a seventh-phase switching circuit, wherein the first-phase switching circuit and the fifth-phase switching circuit receive the same control signal, the second-phase switching circuit and the sixth-phase switching circuit receive the same control signal, and the third-phase switching circuit and the seventh-phase switching circuit receive the same control signal.
4. The multiphase voltage regulation module as described in claim 1 further includes a second switching device disposed on the printed circuit board, including a fifth-phase switching circuit and a sixth-phase switching circuit, wherein the first-phase switching circuit and the fifth-phase switching circuit receive the same control signal, and the second-phase switching circuit and the sixth-phase switching circuit receive the same control signal.
5. The multiphase voltage regulation module according to any one of claims 2-4, wherein the first switching device and the second switching device are connected in parallel, or the first switching device and the second switching device respectively provide two outputs.
6. The multiphase voltage regulation module as claimed in claim 1, wherein the control signal received by the first phase switching circuit is out of phase by 90 degrees with the control signal received by the second phase switching circuit, or the control signal received by the first phase switching circuit is out of phase by 90 degrees with the control signal received by the third phase switching circuit, or the control signal received by the first phase switching circuit is out of phase by 90 degrees with the control signal received by the fourth phase switching circuit.
7. The multiphase voltage regulation module as described in claim 1 further includes a capacitor device connected in parallel to the input terminal, and includes a plurality of capacitors disposed on the printed circuit board.
8. The multiphase voltage regulation module as claimed in claim 7, wherein the plurality of capacitors includes a first capacitor and a second capacitor, wherein the first capacitor is placed adjacent to the first phase switching circuit and the second phase switching circuit, and the second capacitor is placed adjacent to the third phase switching circuit and the fourth phase switching circuit, wherein the first phase switching circuit and the second phase switching circuit do not simultaneously draw charge from the first capacitor, and the third phase switching circuit and the fourth phase switching circuit do not simultaneously draw charge from the second capacitor.
9. The multiphase voltage regulation module as claimed in claim 1, wherein the plurality of output inductors includes a first-phase output inductor, a second-phase output inductor, a third-phase output inductor, and a fourth-phase output inductor, the first-phase switching circuit is correspondingly connected to the first-phase output inductor, the second-phase switching circuit is correspondingly connected to the second-phase output inductor, the third-phase switching circuit is correspondingly connected to the third-phase output inductor, and the fourth-phase switching circuit is correspondingly connected to the fourth-phase output inductor.
10. The multiphase voltage regulation module as described in claim 9, wherein the first phase output inductor, the second phase output inductor, the third phase output inductor and the fourth phase output inductor constitute a four-phase coupled inductor and share a common magnetic core assembly.
11. The multiphase voltage regulation module of claim 10, wherein the printed circuit board includes at least one inner layer, and the magnetic core assembly is disposed on the at least one inner layer of the printed circuit board.
12. The multiphase voltage regulation module of claim 11, wherein the magnetic core assembly comprises two connected magnetic rings, each magnetic ring comprising a first portion, a second portion, and a sector connected to the first portion and the second portion, wherein an air gap is provided between the first portion and the second portion, and the air gap is connected to a hole in the middle of the magnetic ring.
13. The multiphase voltage regulation module of claim 12, wherein each of the output inductors includes a winding assembly passing through the hole of the magnetic core assembly, one end of the winding assembly being electrically connected to the corresponding phase switch circuit of the first phase switch circuit, the second phase switch circuit, the third phase switch circuit, and the fourth phase switch circuit, and the other end of the winding assembly being electrically connected to the output terminal.
14. The multiphase voltage regulation module of claim 13, wherein each of the switching circuits and the output terminal are disposed on opposite sides of the printed circuit board.
15. A multiphase voltage regulation module, comprising: A printed circuit board; A first switching device is disposed on the printed circuit board, including a 2N phase switching circuit. A first terminal of each of the switching circuits is electrically connected to an input terminal, and a second terminal of each of the switching circuits is electrically connected to a first terminal of a corresponding output inductor. A second terminal of each of the plurality of output inductors is electrically connected in parallel to an output terminal. The 2N-phase switching circuit forms N switch combinations. Each switch combination includes a first-phase switching circuit and a second-phase switching circuit. The first-phase switching circuit and the second-phase switching circuit are adjacent and their projections overlap in a first direction. The first-phase switching circuit in the i-th switch combination is adjacent and its projection overlaps in a second direction with the first-phase switching circuit in the (i+1)-th switch combination. The second-phase switching circuit in the i-th switch combination is adjacent and its projection overlaps in the (i+1)-th switch combination. Each phase switching circuit receives a corresponding control signal, and a plurality of the control signals are sequentially phase-shifted. Where N is an integer greater than or equal to 2, and i = 1, 2, ..., N-1.
16. The multiphase voltage regulation module of claim 15 further includes a second switching device disposed on the printed circuit board and including an M-phase switching circuit, and having at least some control signals, wherein each of the at least some control signals is simultaneously provided to a phase switching circuit in the first switching device and a phase switching circuit in the second switching device.
17. The multiphase voltage regulation module as claimed in claim 16, wherein the plurality of control signals are sequentially phase-shifted by 360° / 2N.