Multi-phase totem column inductor and isolated multi-pool switched capacitor heterogeneous collaborative voltage stabilizing device

Abstract

The application discloses a kind of multi-phase totem column inductance and isolated multi-cell switch capacitor isomorphic collaborative voltage stabilizing device and control method, belong to power electronic DC voltage stabilizing technical field.The device includes multi-phase totem column inductance conversion main circuit, isolated multi-cell switch capacitor auxiliary array and control unit;Inductance main circuit bears all steady-state power conversion, realizes continuous stepless voltage stabilization;Capacitor auxiliary array each pool is electrically isolated, pre-charge voltage real-time follows bus, only in transient condition Time cut-in energy compensation, high resistance is opened in steady state;Control unit uses feedforward prediction logic, cooperates hardware fast trigger and load peak value prediction, realizes microsecond level transient response.The device can be configured front-end isolated AC-DC unit to constitute complete machine power supply, through two-stage unified control and capacitor pool multiplexing, can cancel intermediate bus large-capacity electrolytic capacitor, improve power density and reliability.The application breaks the traditional power supply ripple, response, efficiency triangle constraint, with high steady-state efficiency, millivolt level ripple and superfast transient recovery, can be widely used in audio power amplifier, precision instrument, industrial servo and other demanding power quality field.

Description

Technical Field

[0001] This invention relates to the field of power electronic DC voltage regulation technology, specifically to a heterogeneous collaborative voltage regulator and control method that combines high steady-state efficiency, low output ripple, and ultra-fast transient response. Background Technology

[0002] Existing DC regulated power supplies are mainly divided into two categories: linear regulators and switching regulators, both of which have inherent performance bottlenecks. The first category is the traditional inductor-type switching power supply, represented by the multiphase Buck topology. It relies on the continuous energy storage of the inductor to achieve power conversion, exhibiting strong steady-state load capacity and high efficiency. However, its transient response speed is inherently constrained by the loop bandwidth and inductance, resulting in large voltage drops and long recovery times during load step changes, making it difficult to meet the high-precision power supply requirements of large dynamic loads. Furthermore, there is an inherent contradiction between steady-state ripple and loop stability, making it impossible to simultaneously achieve extremely low ripple and ultra-fast response. The second category is the pure switched-capacitor type regulated power supply, which relies on series and parallel capacitors to divide the voltage for conversion. It has no power inductor and is small in size, but its continuous load capacity is weak, efficiency decays significantly under high current, and capacitor switching impacts are large, limiting its application in high-voltage, high-power scenarios.

[0003] In AC input power supply solutions, the industry generally adopts a two-stage architecture of "pre-stage PFC + post-stage DC-DC". Large-capacity electrolytic capacitors are required between the two stages as energy storage buffers, which has the disadvantages of large size, short life and low reliability. Moreover, the two-stage control is independent of each other, and the dynamic response speed of the load is limited by the loop bandwidth of the pre-stage, which cannot achieve optimal performance.

[0004] Compared with traditional PID feedback control, feedforward control has the advantages of fast response speed and no integral accumulation error. It has been applied in signal processing, motion control and other fields. However, it has not yet been deeply integrated with the inductor-capacitor heterogeneous DC voltage regulator topology, and cannot give full play to the synergistic performance advantages of the two types of topologies. Summary of the Invention

[0005] I. Technical problems to be solved To address the shortcomings of existing technologies, this invention proposes a heterogeneous collaborative voltage regulator device combining a multiphase totem-pole inductor and an isolated multi-cell switched capacitor, primarily solving the following technical problems: 1. Breaking the inherent triangle constraint of "steady-state ripple - transient response - conversion efficiency" in traditional power supplies, it simultaneously achieves high steady-state efficiency, low output ripple, and ultra-fast transient recovery; 2. Solves the dual defects of weak load-carrying capacity and insufficient continuous peak compensation of pure switched capacitor power supplies, and slow transient response of pure inductive power supplies; 3. Achieve impact-free capacitor switching across the entire voltage regulation range, avoiding circulating current and current spikes caused by voltage difference, and ensuring topology reliability; 4. Construct a layered fault-tolerant architecture so that a single path failure does not affect the overall power supply, improving stability and service life under all operating conditions; 5. Optimize the collaborative performance of the two-stage AC-DC overall architecture, eliminate the large-capacity electrolytic capacitor on the intermediate bus, reduce the size and improve the overall lifespan.

[0006] II. Technical Solution This invention adopts a core heterogeneous architecture of "inductors bearing steady-state power, capacitors supplementing transient gaps, and feedforward scheduling with time-sharing switching". The specific technical solution is as follows: A heterogeneous collaborative voltage regulator device of multi-phase totem pole inductors and isolated multi-cell switched capacitors includes three parts: a multi-phase totem pole inductor conversion main circuit, an isolated multi-cell switched capacitor auxiliary array, and a control unit.

[0007] Multiphase totem pole inductor converter main circuit: adopts a multiphase interleaved parallel totem pole Buck topology as the main power conversion unit, which undertakes 100% of the steady-state full-load power and is responsible for continuous voltage regulation and basic power supply; the multiphase interleaved design naturally cancels most of the switching ripple, ensuring the quality of steady-state power supply.

[0008] Isolated multi-cell switched capacitor auxiliary array: It consists of multiple electrically isolated capacitor cells. Each capacitor cell is equipped with an independent switching switch and an independent pre-charge circuit. It is only connected to the output bus side and does not participate in the energy conversion of the main power circuit. In standby mode, the pre-charge circuit keeps the capacitor voltage following the bus voltage regulation value in real time to maintain zero voltage difference and ensure that there is no circulating current or impact at the moment of switching. It only switches in briefly to replenish energy during the transient peak of the load. After completion, it immediately switches off with high blocking and does not participate in steady-state operation.

[0009] Control Unit: It adopts a two-layer control architecture of rapid hardware backup and precise firmware scheduling; the hardware layer is responsible for nanosecond-level emergency triggering to deal with sudden load changes; the firmware layer adopts feedforward prediction logic to be responsible for phase deviation judgment, load peak prediction, capacitor pool status rotation scheduling and main circuit voltage regulation coordination.

[0010] Furthermore, the capacitor array employs a multi-cell time-sharing mechanism, with multiple cells operating in four states: discharge compensation, offline pre-charging, voltage balancing, and hot standby. These states rotate cyclically to ensure a consistently available standby cell under continuous peak conditions, eliminating compensation gaps. Furthermore, the pre-charging circuit utilizes a tiered pre-charging strategy: hot standby cells are precisely charged with a small current, controlling the voltage difference with the bus to the millivolt level; offline pre-charging cells are rapidly charged with a large current, shortening the single-cell recovery cycle and balancing compensation accuracy with continuous compensation capability. Furthermore, each cell's switching circuit is connected in series with a saturated inductor buffer unit to suppress high-frequency spikes and parasitic oscillations during switching, while ensuring low loss during steady-state conduction.

[0011] Furthermore, when the front-end isolated AC-DC converter unit is configured to form the complete power supply, the front and rear stages share the same control unit. The control unit feeds forward load change information to the front stage, synchronously adjusts the output timing of the two stages, and makes the switching frequencies of the two stages phase-locked and the phases staggered by a set angle to achieve mutual cancellation of intermediate bus ripple and reduce the demand for energy storage buffer. Furthermore, the idle energy storage cells of the isolated multi-cell switched capacitor auxiliary array can be selectively connected to the intermediate bus or the output bus via bidirectional high-speed switches. One array can simultaneously undertake the dual functions of output transient energy replenishment and intermediate bus energy storage buffer, replacing the large-capacity electrolytic capacitors in the traditional two-stage architecture.

[0012] The corresponding heterogeneous collaborative voltage regulation control method includes five steps: steady-state power supply, deviation detection, transient compensation, rotation recovery, and synchronous voltage regulation. It achieves seamless connection between inductors and capacitors through timing collaboration, with no control interruptions throughout the process.

[0013] III. Beneficial Effects Compared with the prior art, the present invention has the following significant advantages:

[0014] A generational breakthrough in transient performance: Utilizing a heterogeneous architecture combining inductor-based steady-state power supply and capacitor-based transient power replenishment, this design completely breaks down the inherent contradictions of traditional power supplies regarding "loop bandwidth, stability, and ripple." Under 0-100% load steps, the voltage drop amplitude and recovery time are improved by an order of magnitude compared to traditional multiphase switching power supplies of the same specifications. With optimized component parameters and wiring design, transient voltage fluctuations can be controlled within ten millivolts, and recovery time reaches the microsecond level, fundamentally eliminating the problem of dynamic power supply compression.

[0015] The purity of steady-state power supply is greatly improved: the multi-phase interleaved topology naturally cancels the switching ripple, and the capacitor array fills the phase gap, reducing the steady-state output ripple by more than 50% compared with the traditional solution of the same power; under the preferred implementation, the steady-state ripple can be as low as a few millivolts, combining the high efficiency of switching power supply with the low ripple characteristics of linear power supply.

[0016] Consistent performance across the entire voltage regulation range: The pre-charge voltage of the capacitor bank follows the bus voltage regulation value in real time, maintaining zero voltage difference switching across the entire output voltage range. The transient compensation performance does not decrease with the voltage regulation range, eliminating the defect of large performance differences between high and low voltage ends in traditional solutions.

[0017] High reliability and long lifespan: The power path has no large-capacity electrolytic capacitors, and the core energy storage can use film capacitors and ceramic capacitors. With the single-cell fault isolation mechanism, the mean time between failures of the system is significantly better than that of traditional electrolytic capacitor power supplies. Under the two-stage whole machine architecture, the intermediate bus electrolytic capacitor can be eliminated by reusing the capacitor pool, which further improves the whole machine lifespan and power density.

[0018] Highly adaptable to various scenarios: It can be used independently as a high-end voltage regulator module, or it can be embedded in a complete system to work together, covering fields with stringent power quality requirements such as audio power amplifiers, precision measurement, industrial servo, and medical equipment; it can be used as a DC-DC module with a front-end power supply, or it can be integrated with an AC-DC preamplifier to form a complete power supply, flexibly adapting to different application scenarios. Attached Figure Description

[0019] Figure 1 is a block diagram of the overall architecture of the heterogeneous collaborative voltage regulator device of the present invention; Figure 2 is a topological schematic diagram of the multiphase totem pole inductor conversion main circuit of the present invention; Figure 3 is a topological schematic diagram of the isolated multi-cell switched capacitor auxiliary array described in this invention; Figure 4 is a schematic diagram of the collaborative control timing of the control unit described in this invention, including the synchronous triggering timing of the preceding and following stages. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0021] As shown in Figure 1, this embodiment is a non-isolated DC voltage regulator module. The core includes a multi-phase totem pole inductor conversion main circuit, an isolated multi-cell switched capacitor auxiliary array, and a control unit. The input is 48V DC voltage, and the output is 12V~40V continuously adjustable DC voltage. The rated output power is 150W, which is suitable for dual-channel audio power amplifier power supply scenarios.

[0022] As shown in Figure 2, the multiphase totem-pole inductor converter main circuit adopts a 4-phase interleaved parallel half-bridge topology. Each phase half-bridge consists of two high-speed power MOSFETs paired with independent power inductors. The four-phase switches are staggered by 90°, effectively increasing the switching frequency and significantly reducing the output ripple amplitude. The control unit can automatically switch between 1-phase, 2-phase, or 4-phase operating modes according to the load current. Under light load conditions, redundant phases are shut down to improve conversion efficiency.

[0023] As shown in Figure 3, the isolated multi-cell switched capacitor auxiliary array is an isolated multi-cell capacitor array encapsulated within a dashed frame, employing a parallel structure of four independent capacitor cell units. Each capacitor cell unit includes a capacitor energy storage unit 15 and an isolating switch unit 16; the right side of the capacitor energy storage unit 15 is connected to the top side of the isolating switch unit 16, forming a single-cell power branch; the right sides of all isolating switch units 16 are connected to a power replenishment bus 17, which is connected in parallel to the device's output DC bus. The bottom side of each isolating switch unit 16 is an independent control signal terminal, from which control signal lines are led out and converged to a common control bus, which is connected to the control unit via a control signal port 18; the top and right sides of the isolating switch unit 16 are power terminals, and the bottom side is a control terminal, with the power circuit and control circuit being partitioned and electrically independent.

[0024] Each group of 15 capacitor storage units is equipped with an independent unidirectional pre-charge circuit (not shown in the figure). The pre-charge circuit adopts a tiered pre-charge strategy: the hot standby cell uses a small current for precise charging to control the voltage difference with the bus at the millivolt level; the offline pre-charge cell uses a large current for fast charging to shorten the single-cell recovery cycle, balancing compensation accuracy and continuous compensation capability. The charging circuits of each capacitor cell are independent of each other, and the cells are completely electrically isolated, eliminating the problems of parallel voltage equalization and circulating current. The switching circuit of each capacitor cell is connected in series with a saturated inductor buffer unit to suppress high-frequency spikes and parasitic oscillations during switching, while ensuring low loss during steady-state conduction.

[0025] During operation, the four capacitor banks rotate in a time-sharing manner, operating on a "charging-standby-discharging-isolation" basis. At any given time, only one capacitor bank is connected to the output bus, while the other three are in charging, standby, and isolation states, respectively. This rotation mechanism ensures that each capacitor bank operates for a consistent duration, resulting in a balanced lifespan, and can also withstand continuous load peak impacts.

[0026] The control unit adopts a two-layer architecture of MCU + hardware comparator: the hardware comparator sets a fixed voltage threshold and has a response time of less than 500ns, and is responsible for the fastest emergency triggering; the MCU runs feedforward prediction logic, dynamically adjusts the decision threshold and correction step size according to parameters such as input voltage, output voltage, and load current, and manages the four-cell state machine, main circuit voltage regulation and fault protection.

[0027] As shown in Figure 4, the collaborative control logic in this embodiment is divided into three operating conditions:

[0028] Steady-state operation: Load current fluctuation is less than 5% of the rated value, only the multi-phase totem pole inductor conversion main circuit works, maintaining stable output voltage; the isolated multi-cell switched capacitor auxiliary array is in a high-impedance isolation state, and the bus ripple remains at an extremely low level.

[0029] Slowly changing dynamic operating conditions: The load current change rate is low, and the voltage regulation tracking is independently completed by the multi-phase totem pole inductor conversion main circuit. The output voltage is continuously and smoothly regulated by adjusting the duty cycle, and the capacitor array remains in standby mode.

[0030] Transient surge condition: When the load current change rate exceeds a set threshold, the control unit identifies the peak trend through feedforward prediction logic and simultaneously triggers two actions at the set phase point of the current rising edge: first, the totem-pole main circuit immediately increases the duty cycle, increasing the inductor current; second, the corresponding standby capacitor bank is instantaneously engaged, directly releasing charge to the output bus to replenish the peak current. With the combined effect of these two actions, the bus voltage drop is suppressed to a very small range, and the transient recovery time is much shorter than that of traditional feedback power supplies.

[0031] As a preferred implementation, the feedforward prediction logic adopts a phase window-based discrete decision rule: by collecting the real-time phase and frequency of load changes, and combining the system hardware delay and preset voltage drop threshold to calculate the effective compensation window, the switching is accurately triggered before the peak arrives, achieving zero-hysteresis compensation.

[0032] In this embodiment, the control unit is also equipped with predictive overcurrent and overvoltage protection functions: predicting current fluctuations by load change trends, and when the current is about to exceed the protection threshold, gradually limiting the output power in advance, rather than directly shutting off after reaching the threshold, which ensures device safety and avoids output interruption and overshoot stress caused by traditional protection modes.

[0033] Optionally, the control unit supports direct power adjustment: when a reference amplitude signal is input to the load, the control unit can synchronously adjust the output bus voltage and the maximum output power, and directly realize the continuous adjustment of the load power through the power supply side. There is no need to set an attenuation circuit in the load signal path, thus eliminating the loss and distortion caused by signal attenuation.

[0034] Optionally, the control unit is equipped with a hardware-bound firmware verification mechanism, which uses the unique identification information built into the microcontroller and combines it with the factory-calibrated topology feature parameters to generate a verification key. The firmware automatically verifies hardware compatibility during runtime, thereby improving the firmware's anti-copying capability.

[0035] With optimized component parameters and wiring design, the steady-state full-load output ripple in this embodiment can be as low as 3mV, the voltage drop under a 0-100% load step is less than 10mV, and the recovery time is less than 2μs. Its overall performance is significantly better than that of traditional multiphase switching power supplies of the same power level. Example 2

[0036] This embodiment, based on Embodiment 1, adds a front-end isolated AC-DC converter unit to form a complete integrated AC / DC regulated power supply, representing a fully isolated flagship solution. The front-end isolated AC-DC converter unit adopts a totem-pole PFC+LLC resonant topology, possessing EMI filtering, rectification, power factor correction, and electrical isolation functions. Its main power topology principle is conventional technology in this field and will not be elaborated further. The front-end AC-DC unit supports a wide-range AC mains input of 90~264V and outputs an isolated DC voltage (48V in this embodiment) matched to the subsequent heterogeneous voltage regulator unit, meeting the electrical isolation and safety specifications of civilian electronic equipment.

[0037] In this embodiment, the front-end AC-DC converter unit and the subsequent multi-phase totem-pole inductor converter main circuit share the same control unit. After acquiring the load change information on the output side, the control unit synchronously feeds it forward to the front-end AC-DC unit, dynamically adjusting the front-end output current to match the energy output of the front-end with the load demand of the subsequent stage in real time, significantly reducing the voltage fluctuation amplitude of the intermediate bus. At the same time, the control unit is configured with a two-stage switching frequency phase-locked loop mechanism, making the switching frequencies of the front-end LLC and the subsequent Buck converter integer multiples of each other, and staggering their phases by a set angle, so that the switching ripples of the two stages cancel each other out on the intermediate bus, further reducing the ripple amplitude.

[0038] The idle energy storage cells in the isolated multi-cell switched capacitor auxiliary array can be selectively connected to the intermediate bus or the device output bus via a bidirectional high-speed switch. When connected to the intermediate bus, the idle capacitor cells can serve as high-speed energy buffer units, filling the energy gap caused by the response delay of the preceding stage and replacing the large-capacity electrolytic capacitors required in traditional two-stage architectures. When connected to the output bus, they undertake the function of replenishing energy during transient peak loads. The connection status of the capacitor cells is dynamically scheduled by the control unit according to the operating conditions, realizing the dual-function multiplexing of a single array.

[0039] In engineering implementation, when the voltage levels of the intermediate bus and the output bus are close, the single array time-division multiplexing has the best cost performance and the device specifications can be universal; when the voltage difference between the two levels is large, independent capacitor pool arrays can be configured separately, sharing the same control unit for scheduling, and each matching the corresponding voltage level devices to achieve optimal performance and loss performance.

[0040] This embodiment features high overall conversion efficiency, low output ripple, and excellent transient response performance, making it suitable as a power supply for high-end audio equipment and precision testing instruments. Example 3

[0041] This embodiment is a power-extended implementation, expanding the number of phases in the multi-phase totem-pole inductor converter main circuit to 6 phases and the isolated multi-cell switched capacitor auxiliary array to 6 capacitor banks, increasing the rated output power to 500W, suitable for industrial-grade high-power dynamic load scenarios. The core control logic and architecture principle of this embodiment are completely consistent with Embodiment 1, achieving power increase only through power device specification upgrades and phase and cell expansion, possessing good scalability and serialization capabilities. Example 4

[0042] This embodiment is a simplified entry-level isolated solution. Based on Embodiment 2, the subsequent multi-phase totem-pole inductor converter main circuit is eliminated, and the isolated multi-cell switched capacitor auxiliary array is directly connected in parallel to the output of the LLC resonant converter unit. In this solution, the LLC resonant unit simultaneously undertakes electrical isolation and steady-state voltage regulation functions, while the isolated multi-cell switched capacitor auxiliary array only undertakes the function of transient peak energy replenishment for the load and does not participate in steady-state voltage regulation.

[0043] Compared to traditional LLC power supplies, this solution only requires a small number of capacitors and switching devices to improve transient response speed by over 50%, significantly reduce output voltage drop, and reduce the number of output electrolytic capacitors by over 70%, thus extending the overall lifespan of the system. This solution offers costs and size similar to traditional LLC power supplies while significantly outperforming them, making it suitable as an entry-level system for consumer applications that require good transient performance but are cost-sensitive. Example 5

[0044] This embodiment is an independent upgrade module solution, which encapsulates the isolated multi-cell switched capacitor auxiliary array and the matching independent control MCU into an independent functional module. The module has its own voltage sampling and switching control logic, and can be directly connected in parallel to the output bus of any traditional switching power supply or the intermediate bus of a two-stage architecture without modifying the original power supply's main control and main power circuit.

[0045] For traditional power supplies using analog PWM control chips (whose control logic is hardware-fixed and cannot be programmed with custom energy replenishment algorithms), this module can independently complete the entire process control of voltage detection, peak prediction, and capacitor switching, achieving a non-destructive upgrade of traditional power supplies. After the upgrade, the transient response performance of the original power supply can be significantly improved, while replacing some output or bus electrolytic capacitors, extending the overall lifespan of the device. This solution is suitable for scenarios such as retrofitting existing power supplies and upgrading the performance of old equipment.

[0046] Those skilled in the art should understand that any equivalent substitutions, simple modifications, and combinations of unit topologies, device selections, and parameter configurations made without departing from the principles of this invention should fall within the protection scope of this invention.

Claims

1. A heterogeneous voltage regulator combining a multiphase totem-pole inductor and an isolated multi-cell switched capacitor, characterized in that, The system includes a multi-phase totem-pole inductor converter main circuit, an isolated multi-cell switched capacitor auxiliary array, and a control unit. The multi-phase totem-pole inductor converter main circuit is connected to the DC input bus and is used to undertake all steady-state power conversion, outputting a continuously adjustable DC bus voltage. The isolated multi-cell switched capacitor auxiliary array is connected in parallel to the output DC bus, with each capacitor cell electrically isolated from each other. It is only activated during transient conditions to supplement the load peak current and does not participate in steady-state voltage regulation. The control unit is connected to both the multi-phase totem-pole inductor converter main circuit and the isolated multi-cell switched capacitor auxiliary array. It is equipped with feedforward prediction logic, which can collect the phase and amplitude information of load changes, predict the dynamic peak value of the load, and synchronously schedule the voltage regulation action of the multi-phase totem-pole inductor converter main circuit and the switching action of the isolated multi-cell switched capacitor auxiliary array to achieve coordinated operation of steady-state voltage regulation and transient power replenishment.

2. The heterogeneous collaborative voltage regulator according to claim 1, characterized in that, The multiphase totem pole inductor conversion main circuit is composed of multiple half-bridge power units connected in parallel and interleaved, with the switching phases of each half-bridge unit staggered by a set angle; the control unit supports dynamic phase management and can automatically adjust the number of half-bridge units in operation according to the load power.

3. The heterogeneous collaborative voltage regulator according to claim 1, characterized in that, The isolated multi-cell switched capacitor auxiliary array includes at least two independent capacitor cell units, each of which is equipped with an independent unidirectional charging circuit and a high-speed switching switch. The control unit controls each capacitor cell to work in turn in a time-sharing manner, with only one capacitor cell connected to the output bus at any given time, and parallel connection between different capacitor cells is prohibited.

4. The heterogeneous collaborative voltage regulator according to claim 1, characterized in that, The control unit has built-in operating condition division logic, which divides the load state into steady-state operating condition, slowly changing dynamic operating condition, and transient sudden change operating condition. Under steady-state and slowly changing dynamic operating conditions, only the multi-phase totem pole inductor converter main circuit completes voltage regulation, and the isolated multi-cell switched capacitor auxiliary array is in standby mode. Under transient sudden change operating conditions, while the multi-phase totem pole inductor converter main circuit regulates voltage at full speed, the isolated multi-cell switched capacitor auxiliary array is instantly put into operation to replenish energy and suppress bus voltage drop.

5. The heterogeneous collaborative voltage regulator according to claim 4, characterized in that, The feedforward prediction logic adopts a phase window-based discrete decision rule: based on the load change frequency, system hardware delay, preset voltage drop threshold and load peak parameters, an effective compensation phase window is calculated; at the corresponding phase point before the load peak arrives, capacitor switching and voltage regulation actions are triggered in advance so that the compensation effect arrives synchronously with the load peak.

6. The heterogeneous collaborative voltage regulator according to claim 1, characterized in that, The control unit can synchronously adjust the output bus voltage and output power according to the reference signal amplitude at the load end, and directly realize the continuous adjustment of the load power through the power supply side without the need to set up an attenuation circuit on the load side.

7. The heterogeneous collaborative voltage regulator according to claim 1, characterized in that, The control unit is equipped with predictive protection logic, which predicts current and voltage fluctuations based on load change trends and performs current limiting and derating actions in advance before the parameters reach the protection threshold, thereby reducing the impact stress on the device.

8. The heterogeneous collaborative voltage regulator according to claim 1, characterized in that, The capacitor units of the isolated multi-cell switched capacitor auxiliary array adopt a hybrid architecture of polymer solid capacitors and multilayer ceramic capacitors, or a hybrid architecture of polypropylene film capacitors and multilayer ceramic capacitors.

9. The heterogeneous collaborative voltage regulator according to claim 1, characterized in that, The device also includes a front-end isolated AC-DC converter unit, which is connected to AC mains power and outputs an isolated DC voltage to the input terminal of the multiphase totem pole inductor converter main circuit. The front-end isolated AC-DC converter unit adopts an LLC resonant topology. The front-end isolated AC-DC converter unit and the multiphase totem pole inductor converter main circuit share the same control unit. The control unit collects load change information and feeds it forward to the front-end AC-DC converter unit, synchronously adjusts the two-stage output timing, and the two-stage switching frequencies are phase-locked and the phases are staggered by a set angle.

10. The heterogeneous collaborative voltage regulator according to claim 1, characterized in that, The idle energy storage cells in the isolated multi-cell switched capacitor auxiliary array can be selectively connected to the intermediate bus or the device output bus of the front-end AC-DC conversion unit via a bidirectional high-speed switch, serving as high-speed energy buffer units for the corresponding bus.

11. A heterogeneous collaborative voltage regulation control method applied to the device according to any one of claims 1 to 10, characterized in that, Includes the following steps: S1 Steady-state power supply stage: The multi-phase totem pole inductor converter main circuit independently undertakes all load power and outputs a stable DC voltage; all capacitor banks are in offline or hot standby state, isolated from the bus with high impedance, and do not participate in steady-state voltage regulation. S2 Deviation Detection Stage: Real-time acquisition of bus voltage and load status, and determination of whether voltage deviation exceeds the allowable range through feedforward prediction logic; S3 Transient Compensation Stage: When the judgment deviation exceeds the threshold, the capacitor pool in the hot standby state is instantly switched to the bus to replenish the charge required for the transient peak of the load and to control the bus voltage fluctuation. S4 Rotation and Recovery Phase: After compensation is completed and the bus voltage returns to the allowable range, the current discharge capacitor bank is immediately disconnected and put into the offline pre-charge process. At the same time, the next standby capacitor bank is scheduled to enter the hot standby state, completing one state rotation. S5 Synchronous Voltage Regulation Stage: While the capacitor is being compensated, the main circuit dynamically adjusts its duty cycle to gradually take over the load power and eventually returns to a pure inductor steady-state power supply state.

12. The heterogeneous collaborative voltage regulation control method according to claim 11, characterized in that, This method can be applied to scenarios such as audio power amplifier power supply, precision instrument power supply, industrial servo drive power supply or medical equipment power supply, and achieves low dynamic compression power supply by combining load signal feedforward prediction.

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