Voltage stabilizing type voltage doubler circuit, implantable medical device, and wirelessly powered medical device

Abstract

The present disclosure provides a voltage-stabilized voltage doubler circuit, an implantable medical device and a wireless powered medical device, the voltage-stabilized voltage doubler circuit comprising: a rectification module configured to rectify an alternating voltage input from an input end to output a direct current voltage from an output end; a filtering module configured to filter the direct current voltage; a feedback module configured to generate a feedback voltage based on the direct current voltage; a voltage stabilization module comprising: a first comparator configured to output a first control signal based on the feedback voltage and a preset reference voltage; and a bleeder transistor, a source and a drain of the bleeder transistor being connected between a high voltage end and a ground end of the output end, and a gate of the bleeder transistor receiving the first control signal to control conduction and cutoff of the first transistor; and a control module configured to control the rectification module to output the direct current voltage based on the first control signal and a forward voltage signal of a positive voltage end of the input end.

Description

Technical Field

[0001] This disclosure relates to the field of electronic circuit technology, and more specifically, to a voltage-regulating voltage multiplier circuit, an implantable medical device, and a wirelessly powered medical device. Background Technology

[0002] Wireless power transmission systems based on near-field magnetic coupling have been widely used in implantable medical fields in recent years. Traditional wireless power transmission systems have a multi-stage structure, such as... Figure 1 As shown, the passive voltage multiplier, as the first stage of the wireless power transmission system, can rectify the input sinusoidal voltage and convert it into DC voltage. The next stage is a power management circuit, such as a switching regulator or linear regulator, which can regulate the DC voltage output from the previous stage to the required voltage. Traditional multi-stage wireless power transmission systems have low power transmission efficiency, complex structure, and large footprint, making them unsuitable for use with portable mobile devices.

[0003] Currently, existing wireless power transmission systems have the following problems: 1. In traditional passive voltage doublers, the MOS transistors are connected in a diode configuration. The input signal needs to be greater than the threshold voltage of the MOS transistor to enable it to conduct and transmit the signal, resulting in low transmission efficiency of the passive voltage doubler circuit; 2. To achieve both rectification and voltage regulation of the input voltage, multiple stages of circuits need to be cascaded, resulting in low overall system power transmission efficiency and a large circuit size that is not conducive to portable systems. Summary of the Invention

[0004] To address at least one technical problem mentioned above and in other aspects in the prior art, this disclosure provides a voltage-regulating voltage multiplier circuit that can simultaneously achieve rectification and voltage regulation functions, and has a simple structure, small footprint, and high power transmission efficiency.

[0005] One aspect of this disclosure provides a voltage-regulating voltage multiplier circuit, comprising: a rectifier module configured to rectify an AC voltage input to an input terminal to output a DC voltage from an output terminal; a filter module configured to filter the DC voltage; a feedback module configured to generate a feedback voltage based on the DC voltage; a voltage regulator module comprising: a first comparator that outputs a first control signal based on the feedback voltage and a preset reference voltage; a bleed transistor whose source and drain are connected between a high-voltage terminal and a ground terminal at the output terminal, and whose gate receives the first control signal to control the conduction and cutoff of the bleed transistor; and a control module configured to control the rectifier module to output the DC voltage based on the first control signal and a positive voltage signal at the positive voltage terminal of the input terminal.

[0006] According to some embodiments of this disclosure, the rectifier module includes: a first rectifier module connected between the positive voltage terminal of the input terminal and the high voltage terminal of the output terminal; and a second rectifier module connected between the positive voltage terminal of the input terminal and the ground terminal of the output terminal. When the first control signal is high, the control module controls the first rectifier module and the second rectifier module to turn off and the bleeder transistor to turn on, causing the DC voltage to drop. When the first control signal is low, the first rectifier module and the second rectifier module are alternately turned on to rectify the AC voltage and the bleeder transistor is turned off.

[0007] According to some embodiments of this disclosure, when the first control signal is low, when the positive voltage signal at the positive voltage terminal of the input terminal is higher than the voltage at the high voltage terminal of the output terminal, the first rectifier module is turned on and the second rectifier module is turned off; when the first control signal is low, when the positive voltage signal at the positive voltage terminal of the input terminal is lower than the voltage at the ground terminal of the output terminal, the second rectifier module is turned on and the first rectifier module is turned off.

[0008] According to some embodiments of this disclosure, the first rectifier module includes a P-type transistor, the source of which is connected to the positive voltage terminal of the input terminal, the drain of which is connected to the high voltage terminal of the output terminal, and the gate of which is connected to one output terminal of the control module; and the second rectifier module includes an N-type transistor, the drain of which is connected to the positive voltage terminal of the input terminal, the source of which is connected to the ground terminal of the output terminal, and the gate of which is connected to another output terminal of the control module.

[0009] According to some embodiments of this disclosure, the control module includes: a second comparator, the negative input terminal of which is connected to the positive voltage terminal of the input terminal, and the positive input terminal of which is connected to the high voltage terminal of the output terminal; and a third comparator, the negative input terminal of which is connected to the positive voltage terminal of the input terminal, and the positive input terminal of which is connected to the ground terminal of the output terminal.

[0010] According to some embodiments of this disclosure, the control module further includes: an OR gate, the first input of which is connected to the output of the first comparator, the second input of which is connected to the output of the second comparator, and the output of which is connected to the gate of the P-type transistor; an inverter, the input of which is connected to the output of the first comparator; and an AND gate, the first input of which is connected to the output of the inverter, the second input of which is connected to the output of the third comparator, and the output of which is connected to the gate of the N-type transistor.

[0011] According to some embodiments of this disclosure, the filtering module includes: a first capacitor, the positive terminal of which is connected to the high voltage terminal of the output terminal and the negative terminal of which is connected to the negative voltage terminal of the input terminal; and a second capacitor, the positive terminal of which is connected to the negative terminal of the first capacitor and the negative terminal of which is connected to the ground terminal of the output terminal.

[0012] According to some embodiments of this disclosure, the feedback module includes two feedback resistors connected between the high-voltage terminal and the ground terminal of the output terminal, the positive input terminal of the first comparator is connected between the two feedback resistors to receive the feedback voltage, and the reference voltage is input to the negative input terminal of the first comparator.

[0013] Another aspect of the embodiments of this disclosure provides an implantable medical device, including: a receiving antenna adapted to wirelessly receive an external power signal; a voltage-regulating voltage multiplier circuit as described above, adapted to convert the AC voltage in the power signal into a DC voltage; and a medical device body for treating the human body based on the DC voltage.

[0014] Another aspect of the embodiments of this disclosure provides a wirelessly powered medical system, including: a transmitting antenna adapted to transmit power signals; and an implantable medical device as described above.

[0015] According to an embodiment of the present disclosure, a voltage-stabilized voltage multiplier circuit combines a rectifier module and a voltage regulator module through a control module. This allows the operation mode of the rectifier module to be controlled based on the operating state of the voltage regulator module, enabling the rectification of the input AC voltage and the output DC voltage to be stabilized simultaneously. Attached Figure Description

[0016] Figure 1 This is a block diagram illustrating the principle of a multi-stage infinite power transmission system in the prior art.

[0017] Figure 2 This is a block diagram illustrating the principle of a voltage-regulating multiplier circuit according to an embodiment of the present disclosure; and

[0018] Figure 3 This is a schematic diagram of the circuit structure of a voltage-stabilized voltage multiplier circuit according to an embodiment of this disclosure. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings. However, this disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art. In the accompanying drawings, for clarity, the dimensions and relative dimensions of layers and regions may be exaggerated, and the same reference numerals denote the same elements throughout.

[0020] The embodiments of the present disclosure will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the disclosure. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the present disclosure for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts of the present disclosure.

[0021] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0022] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0023] To facilitate understanding of the technical solutions disclosed herein by those skilled in the art, the following technical terms are explained.

[0024] When using expressions such as "at least one of A, B, and C," the expression should generally be interpreted in accordance with the meaning commonly understood by a person skilled in the art (e.g., "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.). Similarly, when using expressions such as "at least one of A, B, or C," the expression should generally be interpreted in accordance with the meaning commonly understood by a person skilled in the art (e.g., "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.).

[0025] According to one aspect of the inventive concept of this disclosure, in order to solve the problem that traditional passive voltage multipliers use diode connection and the input signal needs to be greater than the transistor threshold voltage to make it conduct, this disclosure uses a comparator to combine the rectification module and the voltage regulation module, so as to achieve both rectification and voltage regulation functions while ensuring the overall circuit power transmission efficiency. It also achieves a simple circuit structure, small footprint, and is suitable for use in portable mobile devices.

[0026] Figure 2 This is a schematic flowchart of a voltage-stabilized voltage multiplier circuit according to an embodiment of this disclosure.

[0027] According to embodiments of this disclosure, such as Figure 2 As shown, a voltage regulator-type voltage multiplier circuit includes a rectifier module, a filter module, a feedback module, a voltage regulator module, and a control module. The voltage regulator module includes a first comparator and a bleed transistor. The rectifier module is configured to rectify an AC voltage (e.g., a sinusoidal voltage) input to its input terminal to output a DC voltage. The filter module is configured to filter the DC voltage. The feedback module is configured to generate a feedback voltage based on the DC voltage. The first comparator C1 is based on the feedback voltage and a preset reference voltage V. REF Output the first control signal. Leakage transistor M R The source and drain are connected between the high-voltage terminal and the ground terminal at the output, and the gate receives the first control signal to control the bleed transistor M. R The control module is configured to be turned on and off based on a first control signal and a positive voltage signal V at the positive voltage terminal of the input terminal. AC+ Control the output DC voltage of the rectifier module.

[0028] According to embodiments of this disclosure, when the feedback voltage is higher than the reference voltage V REF When the feedback voltage is lower than the reference voltage V, the first control signal is high. REF At that time, the first control signal is at a low level.

[0029] According to embodiments of this disclosure, the first comparator C1 can cross the drain transistor M. R The threshold voltage directly controls the bleeder transistor M R The conduction and cutoff.

[0030] According to an embodiment of the present disclosure, a voltage-regulating voltage multiplier circuit is used, which employs a first comparator C1 based on the feedback voltage and the reference voltage V. REF The first control signal is output, which controls the bleeder transistor M. RThe control module combines the rectifier module and the voltage regulator module, allowing the rectifier module to operate based on the voltage regulator module's status. This enables the rectifier module to rectify the input AC voltage and output DC voltage while simultaneously regulating the output DC voltage. This results in a simple circuit structure, small footprint, and suitability for use in portable mobile devices.

[0031] According to embodiments of this disclosure, see Figure 2 The rectifier module includes a first rectifier module and a second rectifier module. The first rectifier module is connected between the positive voltage terminal of the input and the high voltage terminal of the output. The second rectifier module is connected between the positive voltage terminal of the input and the ground terminal of the output. When the first control signal is high, the control module controls the first and second rectifier modules to shut down and activates the bleeder transistor M. R The circuit is turned on, causing the DC voltage to drop. When the first control signal is low, the first and second rectifier modules are alternately turned on to rectify the AC voltage and the bleeder transistor M... R Deadline.

[0032] According to an embodiment of this disclosure, when the first control signal is low, the positive voltage signal V at the positive voltage terminal of the input terminal... AC+ The voltage V at the high voltage terminal of the output terminal is higher than that at the output terminal. DC When the first control signal is low, the first rectifier module is turned on while the second rectifier module is turned off. When the first control signal is low, the positive voltage signal V at the positive voltage terminal of the input terminal... AC+ When the voltage is lower than the ground terminal of the output terminal, the second rectifier module is turned on while the first rectifier module is turned off, thereby realizing the alternating conduction of the first and second rectifier modules to rectify the AC voltage.

[0033] Figure 3 This is a schematic diagram of the circuit structure of a voltage-stabilized voltage multiplier circuit according to an embodiment of this disclosure.

[0034] According to embodiments of this disclosure, such as Figure 3 As shown, the first rectifier module includes a P-type transistor M. P P-type transistor M P The source of the P-type transistor M is connected to the positive voltage terminal of the input. P The drain of the P-type transistor M is connected to the high-voltage terminal of the output. P The gate of the rectifier is connected to an output terminal of the control module. The second rectifier module includes an N-type transistor M. N N-type transistor M N The drain of the N-type transistor M is connected to the positive voltage terminal of the input. N The source of the N-type transistor M is connected to the ground terminal of the output terminal. N The gate is connected to another output terminal of the control module.

[0035] According to an embodiment of this disclosure, the control module includes a second comparator C2, the negative input terminal of which is connected to the positive voltage terminal of the input terminal, and the positive input terminal of which is connected to the high voltage terminal of the output terminal. A third comparator C3 is also included, with its negative input terminal connected to the positive voltage terminal of the input terminal and its positive input terminal connected to the ground terminal of the output terminal.

[0036] According to embodiments of this disclosure, the control module further includes an OR gate, the first input of which is connected to the output of a first comparator C1, the second input of which is connected to the output of a second comparator C2, and the output of which is connected to a P-type transistor M. P The gate of the inverter. Inverter INV, the input of inverter INV is connected to the output of the first comparator C1. AND gate, the first input of AND gate is connected to the output of inverter INV, the second input of AND gate is connected to the output of the third comparator C3, and the output of AND gate is connected to the N-type transistor M. N The gate.

[0037] According to embodiments of this disclosure, the logic function of an OR gate is that when an OR gate has multiple inputs, the output is high as long as at least one input is high. The logic function of an AND gate is that the output is high only when all inputs are high; otherwise, the output is low.

[0038] According to embodiments of this disclosure, see Figure 2 When the first control signal is high, the OR gate receives a high-level signal, and the P-type transistor M... P The gate of the P-type transistor M receives a high-level signal. P The state is off; on the other hand, when the first control signal is high, it receives a low-level signal through the inverter INV and the AND gate, and the N-type transistor M... N The gate of the N-type transistor M receives a low-level signal. N The current state is off, meaning both the first and second rectifier modules are cut off, resulting in no signal output. Conversely, when the first control signal is high, the bleeder transistor M... R The circuit is turned on, causing the first capacitor C to conduct. R1 Second capacitor C R2 (The following will describe in detail) Discharge causes the output DC voltage to drop in order to achieve voltage stabilization.

[0039] According to an embodiment of this disclosure, when the first control signal is low, the positive voltage signal V at the positive voltage terminal of the input terminal... AC+ The voltage V at the high voltage terminal of the output terminal is higher than that at the output terminal. DCWhen the second comparator C2 outputs a low-level signal, the OR gate outputs a low-level signal, and the P-type transistor M... P The gate of the transistor receives a low-level signal, allowing its threshold voltage to directly control the P-type transistor M. P It is in the ON state. When the first control signal is low, the positive voltage signal V at the positive voltage terminal of the input terminal... AC+ When the voltage is lower than the output ground voltage, the third comparator C3 outputs a high-level signal, the AND gate outputs a high-level signal, and the N-type transistor M... N The gate of the transistor receives a high-level signal, allowing its threshold voltage to directly control the N-type transistor M. N It is in the ON state. When the first control signal is low, the bleed transistor M is in the ON state. R Cut off, so that the first rectifier module and the second rectifier module are alternately turned on to rectify the AC voltage, and at the same time, the first capacitor C is turned on. R1 Second capacitor C R2 Charge.

[0040] In this implementation, the comparator directly controls the transistor's conduction by crossing its threshold voltage. This active rectification function can improve transmission efficiency. Simultaneously, it performs rectification while adjusting the discharge transistor M based on whether the first control signal is high or low. R The voltage is stabilized by controlling the state of the circuit, which reduces the area of ​​the circuit structure and is beneficial for use in portable mobile devices.

[0041] According to embodiments of this disclosure, the filtering module includes a first capacitor C. R1 The first capacitor C R1 The positive terminal is connected to the high-voltage terminal of the output, and the first capacitor C R1 The negative terminal is connected to the negative voltage terminal of the input. The second capacitor C... R2 The second capacitor C R2 The positive terminal is connected to the first capacitor C. R1 The negative terminal, the second capacitor C R2 The negative terminal is connected to the ground terminal of the output terminal.

[0042] According to an embodiment of this disclosure, when the first control signal is low, the positive voltage signal V at the positive voltage terminal of the input terminal... AC+ The voltage V at the high voltage terminal of the output terminal is higher than that at the output terminal. DC At that time, P-type transistor M P When in the conducting state, the first capacitor C R1 It is in charging state. When the first control signal is low, the positive voltage signal V at the positive voltage terminal of the input terminal... AC+ When the voltage is lower than the voltage at the ground terminal of the output terminal, the second capacitor C R2 It is in a charging state, and the first capacitor C R1Second capacitor C R2 Filtering is performed through two resistors in the feedback module (described in detail below). When the first control signal is high, the bleeder transistor M... R When the circuit is turned on, the DC voltage drops, and the first capacitor C... R1 Second capacitor C R2 It is in a discharging state.

[0043] In this implementation, the first capacitor C is used R1 Second capacitor C R2 Combined with a rectifier module, it converts the input AC voltage into DC voltage and then filters it before outputting it.

[0044] According to embodiments of this disclosure, the negative voltage signal V at the negative voltage terminal of the input terminal... AC- The positive voltage signal V at the positive voltage terminal of the input terminal. AC+ The inverse differential signal, with a phase difference of 180°, and the negative voltage signal V AC- A reference potential is provided.

[0045] According to embodiments of this disclosure, in the first capacitor C R1 Second capacitor C R2 After the alternating charging process, the voltage value at which the DC voltage is finally stabilized is twice that at the reference potential to achieve voltage multiplication.

[0046] According to embodiments of this disclosure, the feedback module includes two feedback resistors connected between the high-voltage terminal and the ground terminal of the output. The positive input terminal of the first comparator C1 is connected between the two feedback resistors to receive the feedback voltage, and the reference voltage V... REF The input is given to the negative input of the first comparator C1.

[0047] According to embodiments of this disclosure, the feedback module includes two feedback resistors connected between the high-voltage terminal and the ground terminal of the output terminal. The two feedback resistors are respectively the first feedback resistor R. F1 Second feedback resistor R F2 First feedback resistor R F1 The first feedback voltage of the first rectifier module and the second feedback resistor R are fed back. F2 The second feedback voltage of the second rectifier module is fed back.

[0048] According to embodiments of this disclosure, when the first feedback voltage is higher than the reference voltage V REF When the first control signal is high, and the second feedback voltage is higher than the reference voltage V, the first control signal is high. REF When the first feedback voltage is lower than the reference voltage V, the first control signal is high. REF When the first control signal is low, and the second feedback voltage is lower than the reference voltage V... REFAt that time, the first control signal is at a low level.

[0049] An implantable medical device, such as an anti-heart failure device (e.g., a pacemaker) or a human implantable chip, is provided according to another aspect of the embodiments of this disclosure. It includes: a receiving antenna suitable for wirelessly receiving external power signals; a voltage-regulating multiplier circuit as described in the above embodiments for converting AC voltage in the power signal into DC voltage; and a medical device body for treating the human body based on the DC voltage. The receiving antenna can receive external control signals and AC power signals (e.g., sinusoidal voltage), and converts the received AC power signals into a stable DC voltage through the voltage-regulating multiplier circuit to power the medical device body.

[0050] In other embodiments, the voltage-regulating voltage multiplier circuit of this disclosure can be applied in portable mobile devices to receive wireless power signals and power the portable mobile devices.

[0051] According to another aspect of the embodiments of this disclosure, a wirelessly powered medical system includes a transmitting antenna suitable for transmitting power signals and an implantable medical device as described in the above embodiments. The transmitting antenna is suitable for transmitting control signals and AC power signals (e.g., sinusoidal voltage), and the receiving antenna converts the received AC power signals into a stable DC voltage through a voltage-regulating multiplier circuit to power the main body of the medical device.

[0052] It should also be noted that the directional terms mentioned in the embodiments, such as "up," "down," "front," "back," "left," and "right," are only for reference to the directions in the accompanying drawings and are not intended to limit the scope of protection of this disclosure. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or constructions will be omitted where they may cause confusion in understanding this disclosure, and the shapes and dimensions of the components in the drawings do not reflect actual size and proportion, but are only schematic representations of the embodiments of this disclosure.

[0053] Unless otherwise stated, the numerical parameters in this specification and the appended claims are approximate values ​​and can be varied according to desired characteristics derived from the content of this disclosure. Specifically, all figures used in the specification and claims to indicate composition, reaction conditions, etc., should be understood to be modified by the term "about" in all cases. Generally, this means that a specific amount varies by ±10% in some embodiments, ±5% in some embodiments, ±1% in some embodiments, and ±0.5% in some embodiments.

[0054] The use of ordinal numbers such as "first," "second," "third," etc., in the specification and claims to modify the corresponding elements does not imply that the element has any ordinal number, nor does it represent the order of one element with another element, or the order of manufacturing methods. The use of these ordinal numbers is only to enable a named element to be clearly distinguished from another element with the same name.

[0055] Furthermore, unless specifically described or required to occur in a specific order, the order of the above steps is not limited to those listed above and can be varied or rearranged according to the desired design. Moreover, the above embodiments can be used in combination with each other or with other embodiments based on design and reliability considerations; that is, technical features from different embodiments can be freely combined to form more embodiments.

[0056] The specific embodiments described above further illustrate the purpose, technical solutions, and beneficial effects of this disclosure. It should be understood that the above descriptions are merely specific embodiments of this disclosure and are not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A voltage regulator-type voltage multiplier circuit, comprising: The rectifier module is configured to rectify the AC voltage input at the input terminal to output a DC voltage at the output terminal. The rectifier module includes a first rectifier module and a second rectifier module. The first rectifier module includes a P-type transistor, and the second rectifier module includes an N-type transistor. The filtering module is configured to filter DC voltage; The feedback module is configured to generate a feedback voltage based on a DC voltage; The voltage regulator module includes: The first comparator outputs a first control signal based on the feedback voltage and a preset reference voltage; A bleeder transistor has its source and drain connected between the high-voltage terminal and the ground terminal at the output terminal, and its gate receives a first control signal to control the conduction and cutoff of the bleeder transistor. The control module is configured to control the output DC voltage of the rectifier module based on the first control signal and the positive voltage signal at the positive voltage terminal of the input terminal; The control module includes: The second comparator has its negative input connected to the positive voltage terminal of the input terminal and its positive input connected to the high voltage terminal of the output terminal. The third comparator has its negative input connected to the positive input terminal and its positive input connected to the ground terminal of the output terminal. An OR gate is configured such that its first input is connected to the output of a first comparator, its second input is connected to the output of a second comparator, and its output is connected to the gate of a P-type transistor. An inverter, the input of which is connected to the output of the first comparator; The AND gate has its first input connected to the output of the inverter, its second input connected to the output of the third comparator, and its output connected to the gate of the N-type transistor.

2. The voltage regulator circuit according to claim 1, wherein, The rectifier module includes: A first rectifier module is connected between the positive voltage terminal of the input and the high voltage terminal of the output; and The second rectifier module is connected between the positive voltage terminal of the input terminal and the ground terminal of the output terminal. When the first control signal is high, the control module controls the first rectifier module and the second rectifier module to shut down and turns on the bleeder transistor, thereby causing the DC voltage to drop. When the first control signal is low, the first rectifier module and the second rectifier module are alternately turned on to rectify the AC voltage and the bleeder transistor is turned off.

3. The voltage-regulating voltage multiplier circuit according to claim 2, wherein, When the first control signal is low, when the positive voltage signal at the positive voltage terminal of the input terminal is higher than the voltage at the high voltage terminal of the output terminal, the first rectifier module is turned on and the second rectifier module is turned off. When the first control signal is low, and the positive voltage signal at the positive voltage terminal of the input terminal is lower than the voltage at the ground terminal of the output terminal, the second rectifier module is turned on while the first rectifier module is turned off.

4. The voltage-regulating voltage multiplier circuit according to claim 2, wherein, The source of the P-type transistor is connected to the positive voltage terminal of the input terminal, the drain of the P-type transistor is connected to the high voltage terminal of the output terminal, and the gate of the P-type transistor is connected to an output terminal of the control module; and The drain of the N-type transistor is connected to the positive voltage terminal of the input terminal, the source of the N-type transistor is connected to the ground terminal of the output terminal, and the gate of the N-type transistor is connected to another output terminal of the control module.

5. The voltage regulator circuit according to any one of claims 1-4, wherein, The filtering module includes: A first capacitor, the positive terminal of which is connected to the high-voltage terminal of the output terminal, and the negative terminal of which is connected to the negative-voltage terminal of the input terminal; and The positive terminal of the second capacitor is connected to the negative terminal of the first capacitor, and the negative terminal of the second capacitor is connected to the ground terminal of the output terminal.

6. The voltage regulator multiplier circuit according to any one of claims 1-4, wherein, The feedback module includes two feedback resistors connected between the high-voltage terminal and the ground terminal of the output terminal. The positive input terminal of the first comparator is connected between the two feedback resistors to receive the feedback voltage. The reference voltage is input to the negative input terminal of the first comparator.

7. An implantable medical device, comprising: A receiving antenna suitable for wirelessly receiving external power signals; The voltage-regulating multiplier circuit as described in any one of claims 1-6 is suitable for converting the AC voltage in the power signal into a DC voltage; and The main body of the medical device treats the human body based on the DC voltage.

8. A wirelessly powered medical system, comprising: Transmitting antenna, suitable for transmitting power signals; as well as The implantable medical device as described in claim 7.

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