High-side-ratio non-isolated hybrid switched capacitor converter

Abstract

The invention belongs to the technical field of power electronics, and relates to a high-side-ratio non-isolated hybrid switched capacitor converter which is used for direct 48V-1V power conversion of a data center and comprises switching tubes S1 to S38, flying capacitors C1 to C15, inductors L1 to L8, an input end Vin, an output end Vout and a grounding end. The switch tubes S1-S6 and the flying capacitors C1-C3 form a 4: 1 switched capacitor buck converter part; the switch tubes S7-S38, the flying capacitors C4-C15 and the inductors L1-L8 form a voltage-adjustable multi-channel mixed buck converter; mixing of the pre-buck converter and the voltage-adjustable buck converter is achieved through the exchange bus, the advantages of the pre-buck converter and the voltage-adjustable buck converter can be well fused, the defects of the pre-buck converter and the voltage-adjustable buck converter can be overcome, a bus decoupling capacitor is not needed, and the number of switches can be reduced. According to the multi-channel mixed buck converter, a capacitance channel is added, the conduction loss of an inductance channel is reduced, ripples are reduced, the duty ratio is increased, and the voltage stress of a switching tube is reduced; the hybrid switched capacitor converter has the advantages of being large in transformation ratio, high in power density and small in device stress.

Description

Technical Field

[0001] The invention belongs to the technical field of power electronics and relates to a high-side ratio non-isolated hybrid switch capacitor converter. Background Art

[0002] As the market size and application of data centers grow, their huge energy consumption has gradually become a serious problem that cannot be ignored. The energy consumption of data centers and performance such as conversion efficiency are related to their system architecture. At present, the 48V DC power supply architecture has replaced the traditional 12V architecture and has been widely used due to its advantages such as high efficiency, low cost and good flexibility. The main challenges of power conversion from 48V to the load end include: high conversion ratio, high output current and high efficiency, high power density, and fast dynamic response. In order to meet these challenges, various solutions have been proposed in the prior art, which can be divided into two categories: 1) transformer-based solutions, and 2) hybrid switched capacitor solutions. Hybrid switching converters use capacitors for energy transfer. In the hybrid switched capacitor solution, an efficient and compact fixed-ratio switched capacitor converter is first used to reduce the input voltage, and then the Buck converter is used to achieve the remaining voltage conversion.

[0003] However, the existing Buck converter needs to achieve a high conversion ratio of 12V-1V, which increases the overall loss; in addition, the parallel connection of multi-phase Buck converters has the problem of uneven current.

[0004] Therefore, a better circuit architecture design is needed to achieve performance improvements such as large transformation ratio, high power density, and low device stress. Summary of the invention

[0005] The technical solution adopted by the present invention to solve the technical problem is: a high side ratio non-isolated hybrid switch capacitor converter, including: switch tubes S1-S38, flying capacitors C1-C15, inductors L1-L8, an input terminal Vin, an output terminal Vout and a ground terminal;

[0006] The circuit connection mode of the hybrid switch capacitor converter is as follows: one end of the switch tube S1 is connected to the input terminal Vin, the other end of the switch tube S1 is respectively connected to one end of the switch tube S3 and one end of the capacitor C1, the other end of the capacitor C1 is respectively connected to one end of the switch tube S2 and one end of the switch tube S4; the other end of the switch tube S2 is grounded;

[0007] The other end of the switch tube S3 is respectively connected to one end of the capacitor C2 and one end of the switch tube S7; the other end of the capacitor C2 is respectively connected to one end of the switch tube S5 and one end of the switch tube S15; the other end of the switch tube S5 is grounded;

[0008] The other end of the switch tube S4 is respectively connected to one end of the capacitor C3 and one end of the switch tube S23; the other end of the capacitor C3 is respectively connected to one end of the switch tube S6 and one end of the switch tube S31; the other end of the switch tube S6 is grounded; the circuit connection part of the switch tubes S1-S6 and the capacitors C1-C3 constitutes a 4:1 switch capacitor step-down part;

[0009] The other end of the switch tube S7 is connected to one end of the capacitor C4 and one end of the switch tube S9. The other end of the capacitor C4 is respectively connected to one end of the switch tube S8 and one end of the switch tube S10. The other end of the switch tube S8 is grounded.

[0010] The other end of the switch tube S9 is respectively connected to one end of the capacitor C5 and one end of the switch tube S11; the other end of the capacitor C5 is respectively connected to one end of the switch tube S12 and one end of the inductor L1; the other end of the switch tube S12 is grounded; the other end of the switch tube S11 and the other end of the inductor L1 are respectively connected to the output end;

[0011] The other end of the switch tube S10 is respectively connected to one end of the capacitor C6 and one end of the switch tube S13; the other end of the capacitor C6 is respectively connected to one end of the switch tube S14 and one end of the inductor L2; the other end of the switch tube S14 is grounded; the other end of the switch tube S13 and the other end of the inductor L2 are respectively connected to the output end; the switch tubes S7-S14, the capacitors C4-C6, and the inductors L1-L2 form a set of voltage-adjustable multi-channel hybrid buck converter modules;

[0012] The switch tubes S15-S22, capacitors C7-C9, and inductors L3-L4 are divided into three groups, including: the first group: switch tubes S23-S30, capacitors C10-C12, inductors L5-L6; the second group: switch tubes S31-S38, capacitors C13-C15, inductors L3-L8; the third group: switch tubes S15-S38, capacitors C7-C15, inductors L7-L8; the three groups of switch tubes, capacitors, and inductors are divided into three groups according to the ... third group: switch tubes S15-S38, capacitors C7-C15, inductors L7-L8; the third group of switch tubes, capacitors, and inductors are divided into three groups according to the switch tubes S23-S30, capacitors C10-C12, inductors L5-L6; the third group of switch tubes, capacitors, and inductors are divided into three groups according to the switch tubes S23-S30, capacitors C10-C12, inductors L5-L6; the third group of switch tubes, capacitors, and inductors are divided into three groups according to the switch tubes S23-S30, capacitors C10-C12, inductors L5-L6; the third group of switch tubes, The three groups of switch tubes S7-S14, capacitors C4-C6, and inductors L1-L2 are connected in the same way as the circuit formed by the switch tubes S7-S14, capacitors C4-C6, and inductors L1-L2; the three groups of switch tubes, capacitors, and inductor connection circuits after the circuit connection are respectively connected to the other end of the switch tube S4, the other end of the switch tube S5, and the other end of the switch tube S6; the remaining switch tubes S15-S38, capacitors C7-C15, and inductors L3-L8 respectively constitute three groups of modules that are the same as the above-mentioned adjustable voltage multi-channel hybrid buck converter module.

[0013] Preferably, when the hybrid switched capacitor converter is working, the duty cycle of the switch tube is related to the gain; the driving waveforms of the switch tubes S1, S4, S5, S7, S10, S31, and S34 are the same, the driving waveforms of the switch tubes S13, S14, S37, and S38 are the same, and the driving waveform of the switch tube S1 is complementary to the driving waveform of the switch tube S13;

[0014] The driving waveforms of the switches S2, S3, S6, S15, S18, 23, and S26 are the same, the driving waveforms of the switches S21, S22, S29, and S30 are the same, and the driving waveform of the switch S2 is complementary to the driving waveform of the switch S21;

[0015] The driving waveform of the switch tube S2 lags behind the driving waveform of the switch tube S1 by (1-D)×360°;

[0016] The driving waveforms of the switches S8, S9, S32, and S33 are the same, the driving waveforms of the switches S11, S12, S35, and S36 are the same, and the driving waveform of the switch S8 is complementary to the driving waveform of the switch S11; the driving waveform of the switch S8 lags behind the driving waveform of the switch S1 by 180°;

[0017] The driving waveforms of the switches S16, S17, S24, and S25 are the same, the driving waveforms of the switches S19, S20, S27, and S28 are the same, and the driving waveform of the switch S16 is complementary to the driving waveform of the switch S19; the driving waveform of the switch S16 lags behind the driving waveform of the switch S1 by (0.5-D)×360°.

[0018] Preferably, the switch tubes S1-S38 are all MOS tubes.

[0019] Preferably, when the hybrid switched capacitor converter is operating, the driving waveforms of the switch tubes S1-S38 are provided with dead time.

[0020] Preferably, the switch tubes S7-S38, capacitors C4-C15 and inductors L1-L8 form a voltage-adjustable multi-channel hybrid buck converter.

[0021] Preferably, the gain of the hybrid switched capacitor converter is determined by the duty cycle, and the calculation formula is:

[0022]

[0023] In formula (1), V in Indicates input voltage, V out represents the output voltage, and D represents the duty cycle of the driving waveform.

[0024] More preferably, the duty cycle D of the driving waveform is ≤0.5.

[0025] Preferably, the automatic current sharing and natural voltage balancing mechanism of the hybrid switched capacitor converter does not require an additional flying capacitor voltage or inductor current balancing circuit, thereby simplifying the design of the controller.

[0026] The beneficial effects of the present invention are:

[0027] 1. The non-isolated hybrid switched capacitor converter proposed in the present invention not only realizes a high conversion ratio of 48V-1V, but also expands the duty cycle of the driving waveform, reduces the inductor ripple, and meets the high side ratio requirement.

[0028] 2. The hybrid switched capacitor converter proposed in the present invention does not require an intermediate bus capacitor and meets high power density requirements.

[0029] 3. The hybrid switched capacitor converter proposed in the present invention has an automatic current sharing and natural voltage balancing mechanism. The converter does not require an additional flying capacitor voltage or inductor current balancing circuit, thereby simplifying the design of the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a circuit diagram of a high side ratio non-isolated hybrid switched capacitor converter of the present invention;

[0031] Figure 2 is a timing diagram of the present invention;

[0032] Figure 3 It is the equivalent circuit diagram of the working mode one to the working mode six circuits of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the relevant technologies in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] refer to Figure 1-3 In this embodiment, Figure 1The circuit diagram of the high-ratio non-isolated hybrid switch capacitor converter of the present invention is shown. It includes: switch tubes S1-S38, flying capacitors C1-C15, inductors L1-L8, input terminal Vin, output terminal Vout, output capacitor Cout and ground terminal; one end of the switch tube S1 is connected to the input terminal Vin, the other end of the switch tube S1 is simultaneously connected to one end of the switch tube S3 and one end of the capacitor C1, and the other end of the capacitor C1 is simultaneously connected to one end of the switch tube S2 and one end of the switch tube S4. The other end of the switch tube S2 is the ground terminal. The other end of the switch tube S3 is simultaneously connected to one end of the capacitor C2 and one end of the switch tube S7. The other end of the capacitor C2 is simultaneously connected to one end of the switch tube S5 and one end of the switch tube S15. The other end of the switch tube S5 is the ground terminal. The other end of the switch tube S4 is simultaneously connected to one end of the capacitor C3 and one end of the switch tube S23. The other end of the capacitor C3 is simultaneously connected to one end of the switch tube S6 and one end of the switch tube S31. The other end of the switch tube S6 is the ground terminal. The above parts constitute the 4:1 switch capacitor step-down part. Switch tubes S7-S14, capacitors C4-C6 and inductors L1-L2 constitute a set of adjustable voltage multi-channel hybrid step-down converter modules. The other end of switch tube S7 is connected to one end of capacitor C4 and one end of switch tube S9, and the other end of capacitor C4 is simultaneously connected to one end of switch tube S8 and one end of switch tube S10. The other end of switch tube S8 is grounded. The other end of switch tube S9 is simultaneously connected to one end of capacitor C5 and one end of switch tube S11. The other end of capacitor C5 is simultaneously connected to one end of switch tube S12 and one end of inductor L1. The other end of switch tube S12 is grounded. The other end of switch tube S11 and the other end of inductor L1 are simultaneously connected to the output end. The other end of switch tube S10 is simultaneously connected to one end of capacitor C6 and one end of switch tube S13. The other end of capacitor C6 is simultaneously connected to one end of switch tube S14 and one end of inductor L2. The other end of switch tube S14 is grounded. The other end of the switch tube S13 and the other end of the inductor L2 are connected to the output end at the same time. The remaining switch tubes S15-S38, capacitors C7-C15, and inductors L3-L8 constitute three groups of modules that are the same as the above-mentioned adjustable voltage multi-channel hybrid buck converter module, and are respectively connected to the other end of the switch tube S4, the other end of the switch tube S5, and the other end of the switch tube S6. The switch tube control end is used to input the drive signal. When the drive signal G1 is a high level, the switch tubes S1, S4, S5, S7, S10, S31, and S34 are turned on. When the drive signal G1 is a low level, the switch tubes S1, S4, S5, S7, S10, S31, and S34 are turned off. When the drive signal G2 is a high level, the switch tubes S8, S9, S32, and S33 are turned on. When the driving signal G2 is at a low level, the switch tubes S8 , S9 , S32 , and S33 are turned off.The driving signal G3 is a high level switch tube S16, switch tube S17, switch tube S24, and switch tube S25 are turned on. The driving signal G3 is a low level switch tube S16, switch tube S17, switch tube S24, and switch tube S25 are turned off. The driving signal G4 is a high level switch tube S2, switch tube S3, switch tube S6, switch tube S15, switch tube S18, switch tube S23, and switch tube S26 are turned on. The driving signal G4 is a low level switch tube S2, switch tube S3, switch tube S6, switch tube S15, switch tube S18, switch tube 23, and switch tube S26 are turned off.

[0035] Figure 2 for Figure 1 The timing diagram of the high-side ratio non-isolated hybrid switched capacitor converter circuit, the switch tubes S11 and S12 work complementary to the switch tube S9, the switch tubes S13 and S14 work complementary to the switch tube S10, the switch tubes S19 and S20 work complementary to the switch tube S17, the switch tubes S21 and S22 work complementary to the switch tube S18, the switch tubes S27 and S28 work complementary to the switch tube S25, the switch tubes S29 and S30 work complementary to the switch tube S26, the switch tubes S35 and S36 work complementary to the switch tube S33, and the switch tubes S37 and S38 work complementary to the switch tube S34. When the switch tubes are complementary, a dead time is set to avoid commonality.

[0036] Figure 3 (a) Figure 1 The equivalent circuit diagram when the switch tubes S1, S4, S5, S7, S10, S31, S34, S11, S12, S35, S36, S19, S20, S27, S28, S21, S22, S29, S30 are turned on. The input terminal Vin, capacitor C1, capacitor C3, capacitor C13, capacitor C15 form a loop to charge the inductor L8, and the inductor L1-L7, capacitor C5, capacitor C6, capacitor C8, capacitor C9, capacitor C11, capacitor C12, capacitor C14 discharge to the output terminal, and the output terminal Vout voltage is 1 / 48×Vin, achieving a 48:1 voltage reduction.

[0037] Figure 3 (b) Figure 1Equivalent circuit diagram when switch tubes S13, S14, S37, S38, S11, S12, S35, S36, S19, S20, S27, S28, S21, S22, S29, S30 are turned on. Inductors L1-L8, capacitors C5, C6, C8, C9, C11, C12, C14, C15 discharge to the output end, and the output end Vout voltage is 1 / 48×Vin, achieving a 48:1 voltage reduction.

[0038] Figure 3 (c) Figure 1 Equivalent circuit diagram when switch tube S13, switch tube S14, switch tube S37, switch tube S38, switch tube S11, switch tube S12, switch tube S35, switch tube S36, switch tube S16, switch tube S17, switch tube S24, switch tube S25, switch tube S21, switch tube S22, switch tube S29, switch tube S30 are turned on. Capacitors C7 and C8 form a loop to charge inductor L3, and capacitors C10 and C11 form a loop to charge inductor L5. Inductor L1, inductor L2, inductor L4, inductor L6, inductor L7, inductor L8, capacitor C5, capacitor C6, capacitor C9, capacitor C12, capacitor C14, capacitor C15 discharge to the output end, and the output end Vout voltage is 1 / 48×Vin, achieving a 48:1 voltage reduction.

[0039] Figure 3 (d) Figure 1 Equivalent circuit diagram when switch tube S13, switch tube S14, switch tube S37, switch tube S38, switch tube S8, switch tube S9, switch tube S32, switch tube S33, switch tube S19, switch tube S20, switch tube S27, switch tube S28, switch tube S21, switch tube S22, switch tube S29, switch tube S30 are turned on. Capacitor C4 and capacitor C5 form a loop to charge inductor L1, and capacitor C13 and capacitor C14 form a loop to charge inductor L7. Inductor L2, inductor L3, inductor L4, inductor L5, inductor L6, inductor L8, capacitor C6, capacitor C8, capacitor C9, capacitor C11, capacitor C12, capacitor C15 discharge to the output end, and the output end Vout voltage is 1 / 48×Vin, achieving a 48:1 voltage reduction.

[0040] Figure 3 (e) Figure 1Equivalent circuit diagram when switch tubes S13, S14, S37, S38, S11, S12, S35, S36, S19, S20, S27, S28, S21, 22, 29, 30 are turned on. Inductors L1-L8, capacitors C5, C6, C8, C9, C11, C12, C14, C15 discharge to the output end, and the output end Vout voltage is 1 / 48×Vin, achieving a 48:1 voltage reduction.

[0041] Figure 3 (f) Figure 1 Equivalent circuit diagram when switch tube S13, switch tube S14, switch tube S37, switch tube S38, switch tube S11, switch tube S12, switch tube S35, switch tube S36, switch tube S19, switch tube S20, switch tube S27, switch tube S28, switch tube S2, switch tube S3, switch tube S6, switch tube S15, switch tube S18, switch tube S23, switch tube S26 are turned on. Capacitor C1, capacitor C2, capacitor C7, capacitor C9 form a loop to charge inductor L4, and capacitor C3, capacitor C10, capacitor C12 form a loop to charge inductor L6. Inductor L1, inductor L2, inductor L3, inductor L5, inductor L7, inductor L8, capacitor C5, capacitor C6, capacitor C8, capacitor C11, capacitor C14, and capacitor C15 discharge to the output end, and the output end Vout voltage is 1 / 48×Vin, achieving a 48:1 voltage reduction.

[0042] Ignoring the influence of dead time, under steady state conditions, equation (2) can be derived:

[0043]

[0044] According to Kirchhoff's current law, the average current of the capacitor in the proposed topology can be expressed as formula (3):

[0045]

[0046]

[0047] In steady-state equilibrium, the average current of the capacitor is 0, and equation (5) can be obtained:

[0048] CX >=0 (5)

[0049] The combined solution gives equation (6):

[0050]

[0051] ​

[0052] Where i=5,6,8,9,11,12,14,15.

[0053] According to Kirchhoff's voltage law, the average voltage of the inductor in the proposed topology can be expressed as (7)

[0054]

[0055] In steady-state equilibrium, the average voltage of the inductor is 0, and equation (8) can be obtained:

[0056] <v Li >=0 (8)

[0057] Where i=1…7,8.

[0058] The combined solution gives equation (9):

[0059]

[0060] From the above analysis, it can be seen that the equilibrium state is the natural equilibrium state in the proposed topology. This quantitative analysis is independent of the values ​​of inductance and capacitance. Therefore, the automatic current sharing and natural voltage balancing mechanism do not rely on component accuracy and can tolerate passive component tolerances, variations, and derating.

[0061] In summary, the present invention, on the basis of achieving a high conversion ratio of 48V-1V, expands the duty cycle of the driving waveform, reduces the inductor ripple, and meets the high side ratio requirement; the present invention does not require an intermediate bus capacitor, and meets the high power density requirement; the present invention has an automatic current sharing and natural voltage balancing mechanism, and the converter does not require an additional flying capacitor voltage or inductor current balancing circuit, thereby simplifying the design of the controller.

[0062] It should be emphasized that the above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any simple modification made to the above embodiments based on the technical essence of the present invention also falls within the protection scope of the present invention. Other equivalent changes and modifications still fall within the scope of the technical solution of the present invention.

Claims

1. A high side ratio non-isolated hybrid switched capacitor converter, characterized in that: include: Switch tubes S1-S38, flying capacitors C1-C15, inductors L1-L8, input terminal Vin, output terminal Vout and ground terminal; The circuit connection mode of the hybrid switch capacitor converter is as follows: one end of the switch tube S1 is connected to the input terminal Vin, the other end of the switch tube S1 is respectively connected to one end of the switch tube S3 and one end of the capacitor C1, the other end of the capacitor C1 is respectively connected to one end of the switch tube S2 and one end of the switch tube S4; the other end of the switch tube S2 is grounded; The other end of the switch tube S3 is respectively connected to one end of the capacitor C2 and one end of the switch tube S7; the other end of the capacitor C2 is respectively connected to one end of the switch tube S5 and one end of the switch tube S15; the other end of the switch tube S5 is grounded; The other end of the switch tube S4 is respectively connected to one end of the capacitor C3 and one end of the switch tube S23; the other end of the capacitor C3 is respectively connected to one end of the switch tube S6 and one end of the switch tube S31; the other end of the switch tube S6 is grounded; The other end of the switch tube S7 is connected to one end of the capacitor C4 and one end of the switch tube S9. The other end of the capacitor C4 is respectively connected to one end of the switch tube S8 and one end of the switch tube S10. The other end of the switch tube S8 is grounded. The other end of the switch tube S9 is respectively connected to one end of the capacitor C5 and one end of the switch tube S11; the other end of the capacitor C5 is respectively connected to one end of the switch tube S12 and one end of the inductor L1; the other end of the switch tube S12 is grounded; the other end of the switch tube S11 and the other end of the inductor L1 are respectively connected to the output end; The other end of the switch tube S10 is respectively connected to one end of the capacitor C6 and one end of the switch tube S13; the other end of the capacitor C6 is respectively connected to one end of the switch tube S14 and one end of the inductor L2; the other end of the switch tube S14 is grounded; the other end of the switch tube S13 and the other end of the inductor L2 are respectively connected to the output end; The switch tubes S15-S22, capacitors C7-C9, and inductors L3-L4 are divided into three groups, including: the first group: switch tubes S23-S30, capacitors C10-C12, and inductors L5-L6; the second group: switch tubes S31-S38, capacitors C13-C15, and inductors L3-L8; the third group: switch tubes S15-S38, capacitors C7-C15, and inductors L7-L8; the three groups of switch tubes, capacitors, and inductors are respectively connected in the same way as the circuit composed of switch tubes S7-S14, capacitors C4-C6, and inductors L1-L2; the three groups of switch tubes, capacitors, and inductors after the circuit connection are respectively connected to the other end of the switch tube S4, the other end of the switch tube S5, and the other end of the switch tube S6.

2. A high side ratio non-isolated hybrid switched capacitor converter according to claim 1, characterized in that: When the hybrid switched capacitor converter is working, the switch duty cycle is related to the gain; the drive waveforms of the switches S1, S4, S5, S7, S10, S31, and S34 are the same, the drive waveforms of the switches S13, S14, S37, and S38 are the same, and the drive waveform of the switch S1 is complementary to the drive waveform of the switch S13; The driving waveforms of the switches S2, S3, S6, S15, S18, S23, and S26 are the same, the driving waveforms of the switches S21, S22, S29, and S30 are the same, and the driving waveform of the switch S2 is complementary to the driving waveform of the switch S21; The driving waveform of the switch tube S2 lags behind the driving waveform of the switch tube S1 by (1-D)×360°; The driving waveforms of the switches S8, S9, S32, and S33 are the same, the driving waveforms of the switches S11, S12, S35, and S36 are the same, and the driving waveform of the switch S8 is complementary to the driving waveform of the switch S11; the driving waveform of the switch S8 lags behind the driving waveform of the switch S1 by 180°; The driving waveforms of the switches S16, S17, S24, and S25 are the same, the driving waveforms of the switches S19, S20, S27, and S28 are the same, and the driving waveform of the switch S16 is complementary to the driving waveform of the switch S19; the driving waveform of the switch S16 lags behind the driving waveform of the switch S1 by (0.5-D)×360°.

3. The high side ratio non-isolated hybrid switched capacitor converter according to claim 1, characterized in that: The switch tubes S1-S38 are all MOS tubes.

4. The high side ratio non-isolated hybrid switched capacitor converter according to claim 1, characterized in that: When the hybrid switched capacitor converter is working, the driving waveforms of the switch tubes S1-S38 are provided with dead time.

5. The high side ratio non-isolated hybrid switched capacitor converter according to claim 1, characterized in that: The switch tubes S7-S38, capacitors C4-C15 and inductors L1-L8 form a voltage-adjustable multi-channel hybrid buck converter.

6. The high side ratio non-isolated hybrid switched capacitor converter according to claim 1, characterized in that: The gain of the hybrid switched capacitor converter is determined by the duty cycle, and the calculation formula is: In formula (1), V in Indicates input voltage, V out represents the output voltage, and D represents the duty cycle of the driving waveform.

7. A high side ratio non-isolated hybrid switched capacitor converter according to claim 6, characterized in that: The driving waveform has a duty cycle D≤0.

5.

8. The high side ratio non-isolated hybrid switched capacitor converter according to claim 1, characterized in that: In the automatic current sharing and natural voltage balancing mechanism of the hybrid switched capacitor converter, the converter does not need an additional flying capacitor voltage or inductor current balancing circuit.

Images