DCDC isolation power supply based on millimeter waves

Abstract

The utility model provides a DCDC isolation power supply based on millimeter waves. The DCDC isolation power supply comprises a transmission channel and a feedback channel. The transmission channel comprises a power supply input end, a controller and a power supply output end which are connected in sequence; the feedback channel comprises a millimeter wave isolator; and two ends of the millimeter wave isolator are respectively connected with the controller and the power supply output end. According to the DCDC isolation power supply, feedback regulation is realized through millimeter wave wireless transmission, the stability of output voltage can be remarkably improved, an external connector and a connecting line on a feedback channel are omitted, the circuit structure is simplified, and the integration level is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power circuits, and particularly to a DCDC isolated power supply based on millimeter waves. Background Art

[0002] In the existing DCDC power isolation chip, to avoid the interference of abnormal current or the crosstalk of DC common-mode level, a transmission channel is formed by connecting a transmitting chip and a receiving chip through a high-voltage-resistant capacitor to achieve power transmission and isolation of DC common-mode level; at the same time, its feedback channel also realizes isolation of power feedback and DC common-mode level through a high-voltage-resistant capacitor. However, since both the transmission channel and the feedback channel of the existing DCDC power isolation chip adopt the high-isolation transmission method of capacitors, there are problems such as the component composition and the connection relationship between components being relatively complex, the process being complex, which is not conducive to packaging; at the same time, the stability of the output voltage needs to be improved. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a DCDC isolated power supply based on millimeter waves, which uses millimeter wave technology to achieve feedback regulation, not only significantly improves the stability of the output voltage of the isolated power supply, but also can improve the integration level.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is as follows:

[0005] A DCDC isolated power supply based on millimeter waves includes a transmission channel and a feedback channel; the transmission channel includes a power input terminal, a controller, and a power output terminal connected in sequence; the feedback channel includes a millimeter wave isolator.

[0006] Both ends of the millimeter wave isolator are respectively connected to the controller and the power output terminal.

[0007] Optionally, the transmission channel further includes a rectifier circuit and a voltage dividing network; the input end of the rectifier circuit is connected to the controller, and the output end is connected to the power output terminal; the power output terminal is connected to the millimeter wave isolator via the voltage dividing network.

[0008] Optionally, the transmission channel further includes a capacitor C1 and a capacitor C2; one end of the capacitor C1 and one end of the capacitor C2 are respectively connected to the controller, and the other end of the capacitor C1 and the other end of the capacitor C2 are respectively connected to the input end of the rectifier circuit.

[0009] Optionally, the transmission channel further includes a charge pump; the controller is respectively connected to the capacitor C1 and the capacitor C2 through the charge pump.

[0010] Optionally, the transmission channel further includes a filter circuit; the rectifier circuit is connected to the power output terminal via the filter circuit.

[0011] Optionally, the filter circuit includes a capacitor C3; the capacitor C3 is connected in parallel with the rectifier circuit.

[0012] Optionally, the power output terminal includes a first output and a second output; the number of rectifier circuits is two; the number of voltage dividing networks is two; the number of both the capacitor C1 and the capacitor C2 is two; the number of filter circuits is two;

[0013] The output of the controller is divided into two paths. One path is connected to a rectifier circuit via a capacitor C1 and a capacitor C2 connected in parallel. The output terminal of the rectifier circuit is connected to a filter circuit and then serves as the first output; the first output is connected to the millimeter-wave isolator via a voltage dividing network;

[0014] The other path of the output of the controller is connected to another rectifier circuit via another capacitor C1 and another capacitor C2 connected in parallel. The output terminal of the other rectifier circuit is connected to another filter circuit and then serves as the second output; the second output is connected to the millimeter-wave isolator via another voltage dividing network.

[0015] Optionally, the millimeter-wave isolator includes a transmitting end and a receiving end; there is a millimeter-wave wireless communication connection between the transmitting end and the receiving end; the transmitting end is also connected to the power output terminal; the receiving end is also connected to the controller.

[0016] Optionally, the transmitting end includes a transmitting digital-to-analog converter, a transmitting baseband amplifier, a transmitting mixer, a transmitting phase-locked loop, a transmitting power amplifier, a transmitting filter, and a millimeter-wave transmitting antenna;

[0017] The transmitting digital-to-analog converter, the transmitting baseband amplifier, the transmitting mixer, the transmitting power amplifier, the transmitting filter, and the millimeter-wave transmitting antenna are connected in sequence; the transmitting phase-locked loop is connected to the transmitting mixer.

[0018] Optionally, the receiving end includes a receiving digital-to-analog converter, a receiving baseband amplifier, a receiving mixer, a receiving phase-locked loop, a receiving power amplifier, a receiving filter, and a millimeter-wave receiving antenna;

[0019] The receiving digital-to-analog converter, the receiving baseband amplifier, the receiving mixer, the receiving power amplifier, the receiving filter, and the millimeter-wave receiving antenna are connected in sequence; the receiving phase-locked loop is connected to the receiving mixer.

[0020] Optionally, the millimeter-wave isolator is a millimeter-wave isolation chip; the DCDC isolated power supply is a DCDC isolated power supply chip.

[0021] The beneficial effects of the present utility model are as follows: For the DCDC isolated power supply provided by the present utility model, the transmission and DC common-mode level isolation functions originally realized by a capacitor in its feedback channel are realized by using a millimeter-wave isolator. Based on the high speed, high stability, high isolation degree, and high integration characteristics of the millimeter-wave isolator. The DCDC isolated power supply of the present utility model realizes feedback regulation through millimeter-wave wireless transmission, which can not only significantly improve the stability of the output voltage, but also eliminate the external connectors and connection wires on the feedback channel, simplify the circuit structure, and improve the integration degree. Description of the Drawings

[0022] Figure 1 It is a simplified structural schematic diagram of a millimeter-wave-based DCDC isolated power supply provided by an embodiment of the present utility model;

[0023] Figure 2 It is a structural schematic diagram of a millimeter-wave-based DCDC isolated power supply provided by an embodiment of the present utility model;

[0024] Figure 3 It is a structural schematic diagram of a millimeter-wave isolator in a millimeter-wave-based DCDC isolated power supply provided by an embodiment of the present utility model;

[0025] Figure 4 It is a structural schematic diagram of a millimeter-wave-based DCDC isolated power supply provided by an embodiment of the present utility model.

[0026] Label Description:

[0027] 10. Transmission channel; 20. Feedback channel;

[0028] VDD1. Power input terminal; VDD2. Power output terminal; 11. Controller; 12. Rectification circuit;

[0029] 13. Voltage division network; 14. Charge pump; 15. Filter circuit;

[0030] 21. Millimeter-wave isolator;

[0031] 21-TX. Transmitting end; 21-RX. Receiving end;

[0032] TX-1. Transmitting digital-to-analog converter; TX-2. Transmitting baseband amplifier; TX-3. Transmitting mixer;

[0033] TX-4. Transmitting phase-locked loop; TX-5. Transmitting power amplifier; TX-6. Transmitting filter;

[0034] TX-7, millimeter-wave transmitting antenna;

[0035] RX-1, receiving digital-to-analog converter; RX-2, receiving baseband amplifier; RX-3, receiving mixer;

[0036] RX-4, receiving phase-locked loop; RX-5, receiving power amplifier; RX-6, receiving filter;

[0037] RX-7, millimeter-wave receiving antenna. Detailed implementation manners

[0038] To illustrate in detail the possible application scenarios, technical principles, specific implementable solutions, achievable objectives and effects of the present utility model, the following is described in detail in conjunction with the listed specific embodiments and with reference to the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present utility model, and thus are only examples and cannot be used to limit the protection scope of the present utility model.

[0039] Reference to "embodiment" in this text means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0040] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the technical field to which the present utility model belongs; the use of the relevant terms herein is only for describing specific embodiments and is not intended to limit the present application.

[0041] In the description of the present utility model, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist. For example, A and / or B means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " in this text generally represents an "or" logical relationship between the associated objects before and after.

[0042] In the present utility model, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary-secondary or order relationship between these entities or operations.

[0043] Without further limitations, in the present utility model, the terms "comprising", "including", "having" or other similar expressions used in a statement are intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in a process, method or product that includes the said elements. Thus, in a process, method or product that includes a series of elements, it may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such a process, method or product.

[0044] Similar to the understanding in the "Examination Guidelines", in the present utility model, expressions such as "greater than", "less than", "exceeding" are understood not to include the base number; expressions such as "above", "below", "within" are understood to include the base number. In addition, in the description of the embodiments of the present utility model, the meaning of "a plurality of" is two or more (including two). Similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in the same way, unless otherwise specifically defined.

[0045] In the description of the embodiments of the present utility model, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiment or the drawing. It is only for the convenience of describing the specific embodiments of the present utility model or for the reader to understand, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present utility model.

[0046] Unless otherwise clearly specified or limited, in the description of the embodiments of the present utility model, the terms "installed", "connected", "joined", "fixed", "set", etc. should be understood in a broad sense. For example, the said "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the technical field to which the present utility model belongs, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0047] Please refer to Figure 1 , the first embodiment of the present utility model is:

[0048] This embodiment provides a millimeter-wave-based DCDC isolated power supply, as Figure 1As shown, it includes a transmission channel 10 and a feedback channel 20.

[0049] It can be understood that the transmission channel of the DCDC isolated power supply includes a power input terminal VDD1, a controller 12, and a power output terminal VDD2 that are sequentially connected. Here, the transmission channel is used to supply the DC voltage input from the power input terminal VDD1 to the controller. The controller generates a set of differential control signals through power regulation, and then isolates and transmits the differential control signals to the power output terminal VDD2 for output, so as to achieve power modulation and power transmission of the voltage input from the power input terminal VDD1.

[0050] In this embodiment, the transmission channel can be implemented by any circuit structure with the above functions in the prior art. At the same time, the isolation transmission requirement in the transmission channel can also be implemented by any isolation transmission method in the prior art, such as capacitive isolation, electromagnetic isolation, etc.

[0051] Specifically, the feedback channel 20 in this embodiment includes a millimeter-wave isolator 21; both ends of the millimeter-wave isolator 21 are respectively connected to the controller 12 and the power output terminal VDD2. It can be understood that the feedback channel is used to feedback the voltage signal output from the power output terminal VDD2 to the controller through isolation transmission, so that the controller can timely control the output voltage of the power output terminal VDD2 through power regulation.

[0052] In this embodiment, the feedback channel is implemented by a millimeter-wave isolator for isolating and transmitting the feedback voltage signal. Compared with the way of isolating transmission through capacitive coupling in the feedback channel of the prior art, since the millimeter-wave isolator has the characteristics of high speed, high stability, and high isolation degree, the DCDC isolated power supply in this embodiment will be able to obtain faster and more accurate voltage feedback, thus significantly improving the stability of the output voltage. In addition, compared with the capacitive coupling isolation method used in the feedback channel of the prior art, which requires external connectors or connecting wires and has the disadvantages of complex wiring and being not conducive to integration. The feedback channel in this embodiment uses a millimeter-wave isolator with a non-contact chip-embedded antenna transmission method for isolation transmission, which is not only safer and more reliable, but also does not require external connectors / connecting wires, and can greatly simplify the circuit structure composition of the feedback channel through an integrated single-chip solution. Therefore, the DCDC isolated power supply in this embodiment will also be able to optimize the circuit of the feedback channel, can be packaged using standard packaging processes, and improve the integration degree.

[0053] Please refer to Figure 2 , Embodiment 2 of the present utility model is:

[0054] The present utility model is further extended based on Embodiment 1, mainly further refining its transmission channel.

[0055] The millimeter-wave-based DCDC isolated power supply provided in this embodiment is as follows Figure 2 As shown, its transmission channel further includes a rectification circuit 12 and a voltage division network 13; the input end of the rectification circuit 12 is connected to the controller 11, and the output end of the rectification circuit 12 is connected to the power supply output end VDD2; the power supply output end VDD2 is connected to the millimeter-wave isolator 21 via the voltage division network 13.

[0056] In some specific embodiments of this embodiment, as Figure 2 As shown, the rectification circuit 12 is composed of a rectifier bridge formed by MOS transistors Q1 to Q4.

[0057] In some other specific embodiments of this embodiment, as Figure 2 As shown, the voltage division network 13 is formed by connecting resistor R1 and resistor R2 in series; the series-connected R1 and R2 are then connected in parallel with the rectification circuit 12. At the same time, the connection line between resistor R1 and resistor R2 is led out and connected to the feedback channel as the input of the feedback channel. The comparison voltage signal VFB is obtained by dividing the output voltage by the pull-up and pull-down resistors, which is used as the input of the feedback channel and is used to be fed back to the controller via the millimeter-wave isolator after comparison with the reference voltage in the feedback channel, serving as the basis for the controller to adjust the output.

[0058] In the transmission channel of this embodiment, the DC voltage input at the power supply input end VDD1 is given to the controller, and the controller generates a set of differential control signals through power adjustment. After being isolated and transmitted to the rectification circuit, the differential control signals are rectified by the rectification circuit into the power supply VDD2 voltage and output to the power supply output end VDD2; at the same time, the power supply VDD2 voltage output by the rectification circuit will also generate a comparison voltage signal VFB through the voltage division network and then output to the feedback channel.

[0059] Preferably, the isolation transmission method in the transmission channel of this embodiment adopts capacitive isolation transmission. That is, in the transmission channel, the power supply VDD1 is transmitted and the DC common-mode level is isolated through high-voltage-resistant capacitors.

[0060] Specifically, as Figure 2 As shown, the transmission channel further includes capacitor C1 and capacitor C2; one end of capacitor C1 and one end of capacitor C2 are respectively connected to the controller 11, and the other end of capacitor C1 and the other end of capacitor C2 are respectively connected to the input end of the rectification circuit 12.

[0061] Here, a set of differential control signals modulated by the controller will be transmitted to the rectification circuit through capacitor C1 and capacitor C2 in a capacitive coupling isolation manner (blocking DC and passing AC), which is beneficial to improving the integration of the isolated power supply chip.

[0062] In some further specific embodiments of this embodiment, such as Figure 2 shown, the transmission channel further includes a charge pump 14; the controller 11 is respectively connected to the capacitor C1 and the capacitor C2 through the charge pump 14.

[0063] Here, the differential control signal output by the controller will generate a differential control signal with a larger amplitude through the charge pump and output it to the rectifier circuit. Compared with a simple square wave signal, the differential signal with a larger amplitude can provide twice the energy, making the DCDC isolation power larger (the DCDCD isolation power is generally small, about 5W), and the large-amplitude differential control signal coupled by the rectifier circuit can realize self-driven rectification MOS.

[0064] In some further specific embodiments of this embodiment, such as Figure 2 shown, the transmission channel further includes a filter circuit 15; the rectifier circuit 12 is connected to the power output terminal VDD2 through the filter circuit 15.

[0065] As a specific example, the filter circuit 15 includes a capacitor C3; the capacitor C3 is connected in parallel with the rectifier circuit 12.

[0066] Here, the filter circuit is used to reduce the ripple of the voltage of the power supply VDD2 output by the rectifier circuit and improve the output accuracy.

[0067] As a preferred specific embodiment of this embodiment, such as Figure 2 shown, the transmission channel specifically includes a power input terminal VDD1, a controller 11, a charge pump 14, a capacitor C1, a capacitor C2, a rectifier circuit 12, a capacitor C3, a voltage dividing network 13, and a power output terminal VDD2. After the power input terminal VDD1, the controller 11, and the charge pump 14 are connected in sequence, they are connected to the rectifier circuit 12 through the capacitors C1 and C2 connected in parallel; the rectifier circuit 12 is connected to the power output terminal VDD2 through the capacitor C3 and the resistors R1 and R2 connected in series.

[0068] The implementation process of the above transmission channel is as follows: The power input terminal VDD1 outputs to the controller, which generates a pair of differential clock signals; the differential clock signals generate differential clock signals with a higher amplitude through the charge pump, thereby realizing the modulation of the power supply VDD1; the differential clock signals output by the charge pump are isolated and transmitted to the rectifier circuit through the capacitors C1 and C2; after receiving the differential clock signals, the rectifier circuit rectifies them into the voltage of the power supply VDD2, and then reduces the ripple of the voltage of the power supply VDD2 through the capacitor C3. Finally, it is divided into two paths, one path is output to the power output terminal VDD2, and the other path generates a comparison voltage signal VFB through the voltage dividing network and then is output to the feedback channel.

[0069] Please refer to Figure 2, Embodiment 3 of the present utility model is as follows:

[0070] The present utility model is further extended based on Embodiment 1, mainly further refining its feedback channel.

[0071] The millimeter-wave-based DCDC isolated power supply provided in this embodiment, the feedback channel includes a millimeter-wave isolator 21, a reference voltage generator ( Figure 2 not shown in the figure) and a comparator ( Figure 2 not shown in the figure). The comparator is respectively connected to the millimeter-wave isolator, the reference voltage generator and the voltage division network.

[0072] The millimeter-wave isolator 21 includes a transmitting end 21-TX and a receiving end 21-RX; a millimeter-wave wireless communication connection is based between the transmitting end 21-TX and the receiving end 21-RX; the transmitting end is connected to the comparator; the receiving end is connected to the controller.

[0073] In the feedback channel of this embodiment, the comparator compares the comparison voltage signal VFB generated by the voltage division network and the reference voltage VREF generated by the reference voltage generator to determine whether the voltage of the power supply VDD2 reaches the target amplitude, and outputs a feedback signal to the transmitting end of the millimeter-wave isolator according to the judgment result; the feedback signal is isolated and transmitted to the controller through the millimeter-wave isolator, and the controller adjusts the generated differential control signal according to the feedback signal. Thus, the feedback regulation of the voltage of the power supply VDD2 output by the power supply output end VDD2 is realized through the feedback channel.

[0074] In some specific embodiments of this embodiment, as Figure 3 shown, the transmitting end 21-TX of the millimeter-wave isolator includes a transmitting digital-to-analog converter TX-1, a transmitting baseband amplifier TX-2, a transmitting mixer TX-3, a transmitting phase-locked loop TX-4, a transmitting power amplifier TX-5, a transmitting filter TX-6 and a millimeter-wave transmitting antenna TX-7;

[0075] Specifically, the transmitting digital-to-analog converter TX-1, the transmitting baseband amplifier TX-2, the transmitting mixer TX-3, the transmitting power amplifier TX-5, the transmitting filter TX-6 and the millimeter-wave transmitting antenna TX-7 are connected in sequence; the output end of the transmitting phase-locked loop TX-4 is connected to the input end of the transmitting mixer TX-3.

[0076] The receiving end 21-RX of the millimeter-wave isolator includes a receiving digital-to-analog converter RX-1, a receiving baseband amplifier RX-2, a receiving mixer RX-3, a receiving phase-locked loop RX-4, a receiving power amplifier RX-5, a receiving filter RX-6 and a millimeter-wave receiving antenna RX-7;

[0077] Specifically, the receiving digital-to-analog converter RX-1, the receiving baseband amplifier RX-2, the receiving mixer RX-3, the receiving power amplifier RX-5, the receiving filter RX-6, and the millimeter-wave receiving antenna RX-7 are connected in sequence; the output end of the receiving phase-locked loop RX-4 is connected to the input end of the receiving mixer RX-3.

[0078] Herein, the isolation transmission working principle of the millimeter-wave isolator includes:

[0079] The feedback signal reaches the transmitting end of the millimeter-wave transmitter. First, it undergoes digital-to-analog conversion through the transmitting digital-to-analog converter, then signal amplification through the transmitting baseband amplifier, then frequency mixing and phase locking through the transmitting mixer and the transmitting phase-locked loop, then power amplification through the transmitting power amplifier, then filtering through the transmitting filter, and finally is transmitted through the millimeter-wave transmitting antenna; after the millimeter-wave receiving antenna receives the signal transmitted from the millimeter-wave transmitting antenna, it first undergoes filtering through the receiving filter, then power amplification through the receiving power amplifier, then frequency mixing and phase locking through the receiving mixer and the receiving phase-locked loop, then signal amplification through the receiving baseband amplifier, then analog-to-digital conversion through the receiving digital-to-analog converter into a digital signal, and finally the digital signal is output to the controller.

[0080] In the preferred embodiment of this embodiment, the millimeter-wave isolator is a millimeter-wave isolation chip; optionally, the DCDC isolation power supply is also a DCDC isolation power supply chip.

[0081] Herein, by designing the isolation transmission mode of the feedback channel into an integrated single-chip solution, the peripheral circuit can be made more concise, with fewer components, and more convenient for design. The standard CMOS process and the standard packaging process can be used to improve the overall integration of the circuit.

[0082] Furthermore, implementing the DCDC isolation power supply as a whole in an integrated single-chip solution not only simplifies the overall circuit structure, reduces the overall volume, and improves the power supply integration; but also can enhance the market competitiveness.

[0083] Please refer to Figure 4 , Embodiment 4 of the present utility model is:

[0084] Based on Embodiments 1 to 3, this embodiment provides a DCDC isolation power supply with two or even multiple outputs to meet different voltage requirements.

[0085] The DCDC isolated power supply with multiple VDD outputs provided in this embodiment has a power output terminal VDD2 that includes at least a first output VDD2-1 and a second output VDD2-2. Correspondingly, the number of rectifying circuits is two; the number of voltage dividing networks is two; the number of both the capacitor C1 and the capacitor C2 is two; the number of filtering circuits is two; and the number of charge pumps is also two.

[0086] As Figure 4 shown, the output of the controller 11 is divided into two paths. The first path is connected to a capacitor C1 and a capacitor C2 connected in parallel via the charge pump 14, and then connected to a rectifying circuit, and then connected to a filtering circuit (i.e., Figure 4 capacitor C3), and then used as the first output VDD2-1. At the same time, a voltage dividing network (i.e., Figure 4 resistors R1 and R2) is connected in parallel after the capacitor C3, and this voltage dividing network is then connected to the millimeter wave isolator 21;

[0087] The second output of the controller 11 has exactly the same circuit structure as its first output. It also passes through the charge pump 14 and is connected to another capacitor C1 and another capacitor C2 connected in parallel, and then connected to another rectifying circuit. The output terminal of this other rectifying circuit is then connected to another filtering circuit (i.e., Figure 4 capacitor C5), and then used as the second output VDD2-2. At the same time, another voltage dividing network (i.e., Figure 4 resistors R3 and R4) is connected in parallel after the capacitor C5, and this voltage dividing network is then connected to the millimeter wave isolator 21.

[0088] In this embodiment, the outputs of the two voltage dividing networks are both connected to the millimeter wave isolator 21 and fed back to the controller 11 via the feedback channel. The controller appropriately adjusts the power of its two outputs respectively to output two identical / different voltages simultaneously / respectively.

[0089] The DCDC isolated power supply of this embodiment has at least two VDD outputs, which can provide different voltage requirements to better adapt to different usage scenarios, and further improve the practicability and market competitiveness of the DCDC isolated power supply.

[0090] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformation made using the content of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. DCDC isolated power supply based on millimeter wave, characterized in that: It includes a transmission channel and a feedback channel; the transmission channel includes a power input terminal, a controller and a power output terminal connected in sequence; the feedback channel includes a millimeter wave isolator; Two ends of the millimeter wave isolator are respectively connected to the controller and the power output end.

2. The millimeter wave based DCDC isolated power supply according to claim 1, characterized in that: The transmission channel also includes a rectifier circuit and a voltage divider network; the input end of the rectifier circuit is connected to the controller, and the output end is connected to the power supply output end; the power supply output end is connected to the millimeter wave isolator via the voltage divider network.

3. The millimeter wave based DCDC isolated power supply as claimed in claim 2, characterized in that: The transmission channel also includes a capacitor C1 and a capacitor C2; one end of the capacitor C1 and one end of the capacitor C2 are respectively connected to the controller, and the other end of the capacitor C1 and the other end of the capacitor C2 are respectively connected to the input end of the rectifier circuit.

4. The millimeter wave based DCDC isolated power supply as claimed in claim 3, characterized in that: The transmission channel further includes a charge pump; the controller is connected to the capacitor C1 and the capacitor C2 respectively through the charge pump.

5. The millimeter-wave based DCDC isolated power supply as claimed in claim 3, characterized in that: The transmission channel also includes a filter circuit; the rectifier circuit is connected to the power output terminal via the filter circuit.

6. The millimeter-wave based DCDC isolated power supply as claimed in claim 5, characterized in that: The filter circuit includes a capacitor C3; the capacitor C3 is connected in parallel with the rectifier circuit.

7. The millimeter-wave based DCDC isolated power supply as claimed in claim 5, characterized in that: The power output end includes a first output and a second output; the number of the rectifier circuits is two; the number of the voltage divider networks is two; the number of the capacitors C1 and C2 is two; the number of the filter circuits is two; The output of the controller is divided into two paths, one of which is connected to a rectifier circuit via a capacitor C1 and a capacitor C2 connected in parallel, and the output end of the rectifier circuit is connected to a filter circuit as the first output; the first output is connected to the millimeter wave isolator via a voltage divider network; Another output of the controller is connected to another rectifier circuit via another capacitor C1 and another capacitor C2 connected in parallel, and the output end of the other rectifier circuit is connected to another filter circuit as the second output; the second output is connected to the millimeter wave isolator via another voltage divider network.

8. The millimeter-wave based DCDC isolated power supply according to claim 1, characterized in that: The millimeter wave isolator includes a transmitting end and a receiving end; the transmitting end and the receiving end are connected based on millimeter wave wireless communication; the transmitting end is also connected to the power output end; and the receiving end is also connected to the controller.

9. The millimeter-wave based DCDC isolated power supply as claimed in claim 8, characterized in that: The transmitting end includes a transmitting digital-to-analog converter, a transmitting baseband amplifier, a transmitting mixer, a transmitting phase-locked loop, a transmitting power amplifier, a transmitting filter and a millimeter wave transmitting antenna; The transmitting digital-to-analog converter, transmitting baseband amplifier, transmitting mixer, transmitting power amplifier, transmitting filter and millimeter wave transmitting antenna are connected in sequence; the transmitting phase-locked loop is connected to the transmitting mixer.

10. The millimeter wave based DCDC isolated power supply according to claim 8, characterized in that: The receiving end includes a receiving digital-to-analog converter, a receiving baseband amplifier, a receiving mixer, a receiving phase-locked loop, a receiving power amplifier, a receiving filter and a millimeter wave receiving antenna; The receiving digital-to-analog converter, receiving baseband amplifier, receiving mixer, receiving power amplifier, receiving filter and millimeter wave receiving antenna are connected in sequence; the receiving phase-locked loop is connected to the receiving mixer.

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