Series-parallel combination structure envelope tracking power supply

Abstract

The utility model relates to power supply technical field provides a series parallel combination structure envelope tracking power supply, including dynamic regulation structure: dynamic regulation structure symmetry is installed in the top both sides of power supply main part structure, power supply main part structure: power supply main part structure includes power supply casing, main control module and output interface, main control module fixed connection in the inside end of power supply casing, and output interface fixed connection is in the lower part of one side of power supply casing. The utility model discloses through setting dynamic regulation structure, and main control module controls series parallel switch circuit according to envelope information, and the series parallel combination mode of adjustable power module is adjusted, when needing high voltage output, control part adjustable power module series connection, when needing large current output, control part adjustable power module parallel connection, thereby realizes the accurate tracking of signal envelope, provides the power supply voltage of adaptation for power amplifier, and the working efficiency of power amplifier is greatly promoted.

Description

Technical Field

[0001] This utility model relates to the field of power supply technology, and in particular to a series-parallel combined envelope tracking power supply. Background Technology

[0002] In electronic systems such as wireless communication and radar, power amplifiers are one of the core components, and their performance directly affects the communication quality and energy consumption of the entire system.

[0003] Traditional envelope tracking power supplies can adjust the output voltage according to the signal envelope, but most of them use a single power module, which has problems such as limited voltage regulation range, insufficient current output capability, and slow dynamic response speed. When faced with high-power signals with wide envelope variations, they are difficult to meet the power supply requirements of high voltage and high current at the same time. Moreover, voltage fluctuations are prone to occur when switching between different power loads, which affects the output performance of the power amplifier and cannot adapt to the high requirements of power supply systems for next-generation communication technologies such as 5G and 6G. Utility Model Content

[0004] The purpose of this invention is to provide a series-parallel combined envelope tracking power supply to solve the shortcomings of existing envelope tracking power supplies, such as narrow voltage regulation range, weak current output capability, slow dynamic response, and difficulty in adapting to the power supply requirements of high-power wide envelope signals.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a series-parallel combined envelope tracking power supply, including a main power supply structure:

[0006] Dynamic adjustment structure: The dynamic adjustment structure is symmetrically installed on both sides of the top of the main power supply structure;

[0007] Power supply main structure: The power supply main structure includes a power supply housing, a main control module, and an output interface;

[0008] The main control module is fixedly connected to the inside middle of the power supply housing, and the output interface is fixedly connected to the lower part of one side of the power supply housing.

[0009] Dynamic adjustment structure: The dynamic adjustment structure includes a module mounting frame, an adjustable power module, a series-parallel switching circuit, and a signal sampling unit;

[0010] The module mounting bracket is fixedly connected to the top two sides of the power supply housing. The adjustable power modules are evenly distributed and fixedly connected inside the module mounting bracket. The series-parallel switching circuit is fixedly connected to one end of the adjustable power module. The signal sampling unit is fixedly connected to one side of the inside of the power supply housing and is electrically connected to the main control module.

[0011] Preferably, the dynamic adjustment structure further includes a driver chip, a voltage detection unit, a current detection unit, and a heat dissipation component;

[0012] The driver chip is fixedly connected to one side of the series-parallel switching circuit and is electrically connected to the main control module. The voltage detection unit is fixedly connected to the output terminal of the adjustable power module, the current detection unit is connected in series in the output interface circuit, and the heat dissipation component is fixedly connected to both sides of the inner wall of the power supply housing.

[0013] Preferably, the adjustable power supply module is provided in four groups, and each group of adjustable power supply modules is interconnected through a series-parallel switching circuit. The series-parallel switching circuit receives the control signal from the main control module through a driver chip.

[0014] Preferably, the signal sampling unit includes an envelope extraction circuit and a signal amplification circuit. The input terminal of the signal sampling unit is used to connect to an external signal source, and the output terminal is electrically connected to the signal input terminal of the main control module.

[0015] Preferably, the main structure of the power supply further includes an input interface and an energy storage capacitor;

[0016] The input interface is fixedly connected to the lower part of the other side of the power supply housing, and the input interface is electrically connected to the input terminal of the adjustable power module. The energy storage capacitor is connected in parallel to the output terminal of the adjustable power module.

[0017] Preferably, it also includes a protective structure;

[0018] The protection structure includes an overvoltage protection unit, an overcurrent protection unit, an overtemperature protection unit, and a fault alarm unit;

[0019] The overvoltage protection unit is connected in parallel to both ends of the output interface, the overcurrent protection unit is connected in series in the output interface line, the overtemperature protection unit is fixedly connected to one side of the heat dissipation component, and the fault alarm unit is fixedly connected to the top middle of the power supply housing. The overvoltage protection unit, overcurrent protection unit, and overtemperature protection unit are all electrically connected to the signal input terminal of the main control module, and the fault alarm unit is electrically connected to the signal output terminal of the main control module.

[0020] Preferably, the protection structure further includes a short-circuit protection unit and a voltage clamping circuit;

[0021] The short-circuit protection unit is connected in series at the output terminal of the adjustable power supply module, and the voltage clamping circuit is connected in parallel at both ends of the output interface. Both the short-circuit protection unit and the voltage clamping circuit are electrically connected to the main control module.

[0022] The series-parallel combined envelope tracking power supply provided by this utility model has the following advantages:

[0023] This invention, through the setting of a dynamic adjustment structure, utilizes a signal sampling unit to collect the envelope information of external input signals in real time. The main control module controls the series-parallel switching circuit according to the envelope information, adjusting the series-parallel combination of the adjustable power supply modules. When high voltage output is required, the adjustable power supply modules are connected in series; when high current output is required, the adjustable power supply modules are connected in parallel. This achieves accurate tracking of the signal envelope, provides a suitable power supply voltage for the power amplifier, and significantly improves the working efficiency of the power amplifier.

[0024] Based on the aforementioned beneficial effects, a protection structure is provided, which includes multiple protection units such as overvoltage, overcurrent, overtemperature, and short circuit protection. It can monitor the power supply output status and internal temperature in real time. When an abnormal situation occurs, the main control module can quickly trigger the protection mechanism, cut off the fault circuit or adjust the working status, and remind the staff through the fault alarm unit, effectively avoiding equipment damage and improving the safety and reliability of the power supply system. At the same time, the combination of heat dissipation components and energy storage capacitors further ensures the stability and dynamic response speed of the power supply when operating at high power. Attached Figure Description

[0025] Figure 1 This is an axonometric view of the present invention;

[0026] Figure 2 This is another isometric view of the present invention;

[0027] Figure 3 This is a three-dimensional sectional view of the power supply housing of this utility model;

[0028] Figure 4 This is a three-dimensional schematic diagram of the overvoltage protection unit of this utility model;

[0029] Figure 5 This is a three-dimensional disassembled schematic diagram of the power supply housing of this utility model.

[0030] Explanation of the reference numerals in the figure:

[0031] 11. Power supply housing; 12. Main control module; 13. Output interface; 14. Input interface; 15. Energy storage capacitor;

[0032] 21. Module mounting bracket; 22. Adjustable power supply module; 23. Series-parallel switching circuit; 24. Signal sampling unit; 25. Driver chip; 26. Voltage detection unit; 27. Current detection unit; 28. Heat dissipation assembly;

[0033] 31. Overvoltage protection unit; 32. Overcurrent protection unit; 33. Overtemperature protection unit; 34. Fault alarm unit; 35. Short circuit protection unit; 36. Voltage clamping circuit. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figures 1-5 This utility model provides a series-parallel combined envelope tracking power supply, including the main power supply structure:

[0036] Dynamic adjustment structure: The dynamic adjustment structure is symmetrically installed on both sides of the top of the main power supply structure;

[0037] Power supply main structure: The power supply main structure includes a power supply housing 11, a main control module 12, and an output interface 13;

[0038] The main control module 12 is fixedly connected to the middle of the inside of the power supply housing 11, and the output interface 13 is fixedly connected to the lower part of one side of the power supply housing 11.

[0039] The main structure of the power supply also includes an input interface 14 and an energy storage capacitor 15;

[0040] The input interface 14 is fixedly connected to the lower part of the other side of the power supply housing 11, and the input interface 14 is electrically connected to the input terminal of the adjustable power module 22. The energy storage capacitor 15 is connected in parallel to the output terminal of the adjustable power module 22.

[0041] Among them, the energy storage capacitor 15 adopts a high-frequency low-resistance electrolytic capacitor, and the capacity of the energy storage capacitor 15 is adapted to the total output power of the adjustable power module 22. The energy storage capacitor 15 releases electrical energy at the moment of power module switching to maintain stable output voltage and avoid voltage drop or spike.

[0042] Dynamic adjustment structure: The dynamic adjustment structure includes a module mounting frame 21, an adjustable power supply module 22, a series-parallel switching circuit 23, and a signal sampling unit 24;

[0043] The module mounting bracket 21 is fixedly connected to the top two sides of the power supply housing 11. The adjustable power modules 22 are evenly distributed and fixedly connected inside the module mounting bracket 21. The series-parallel switching circuit 23 is fixedly connected to one end of the adjustable power module 22. The signal sampling unit 24 is fixedly connected to one side of the inside of the power supply housing 11. The signal sampling unit 24 is electrically connected to the main control module 12.

[0044] The dynamic adjustment structure also includes a driver chip 25, a voltage detection unit 26, a current detection unit 27, and a heat dissipation component 28;

[0045] The driver chip 25 is fixedly connected to one side of the series-parallel switching circuit 23, and the driver chip 25 is electrically connected to the main control module 12. The voltage detection unit 26 is fixedly connected to the output terminal of the adjustable power module 22. The current detection unit 27 is connected in series in the line of the output interface 13. The heat dissipation component 28 is fixedly connected to both sides of the inner wall of the power housing 11.

[0046] The heat dissipation component 28 includes a cooling fan and heat dissipation fins. The heat dissipation fins are attached to the outer wall of the adjustable power module 22, and the cooling fan is fixedly connected to one side of the heat dissipation fins.

[0047] The adjustable power module 22 is provided in four groups, and each group of adjustable power modules 22 is interconnected through a series-parallel switching circuit 23. The series-parallel switching circuit 23 receives the control signal from the main control module 12 through the driver chip 25. The signal sampling unit 24 includes an envelope extraction circuit and a signal amplification circuit, which are used to accurately collect the envelope information of external signals.

[0048] Working principle: When the power supply is supplying power to the power amplifier;

[0049] First, the external signal source is connected to the input terminal of the signal sampling unit 24. The signal sampling unit 24 extracts the envelope information of the signal in real time, amplifies the envelope information, and transmits it to the main control module 12. The main control module analyzes and processes the envelope information to determine the power supply voltage and current required by the power amplifier. If the signal envelope is in the high-level segment and requires high voltage power supply, the main control module 12 sends a series control signal to the driver chip 25. The driver chip 25 drives the series-parallel switching circuit 23 to switch some of the adjustable power modules 22 to series mode. If the signal envelope is in the low-level segment and requires high current power supply, the main control module 12 sends a parallel control signal. The series-parallel switching circuit 23 switches some of the adjustable power modules 22 to parallel mode.

[0050] Next, the voltage detection unit 26 monitors the output voltage of the adjustable power module 22 in real time, the current detection unit 27 monitors the output current of the output interface 13, and feeds back the detection data to the main control module 12. The main control module 12 fine-tunes the output parameters of the adjustable power module 22 according to the feedback data to ensure that the power supply voltage accurately matches the signal envelope. The heat dissipation component 28 continuously cools the adjustable power module 22 to ensure that the module operates stably under high power conditions.

[0051] This step enables dynamic tracking of the signal envelope, ensuring that the power amplifier always operates in the optimal power supply state, significantly reducing useless power consumption and improving efficiency.

[0052] Please see Figure 3-5 As shown, this embodiment, based on the above embodiment, also includes a protective structure;

[0053] The protection structure includes an overvoltage protection unit 31, an overcurrent protection unit 32, an overtemperature protection unit 33, and a fault alarm unit 34;

[0054] Overvoltage protection unit 31 is connected in parallel to both ends of output interface 13, overcurrent protection unit 32 is connected in series in the line of output interface 13, overtemperature protection unit 33 is fixedly connected to one side of heat dissipation component 28, and fault alarm unit 34 is fixedly connected to the top middle of power supply housing 11. Overvoltage protection unit 31, overcurrent protection unit 32, and overtemperature protection unit 33 are all electrically connected to the signal input terminal of main control module 12, and fault alarm unit 34 is electrically connected to the signal output terminal of main control module 12.

[0055] The protection structure also includes a short-circuit protection unit 35 and a voltage clamping circuit 36;

[0056] The short-circuit protection unit 35 is connected in series to the output terminal of the adjustable power module 22, and the voltage clamping circuit 36 ​​is connected in parallel to both ends of the output interface 13. Both the short-circuit protection unit 35 and the voltage clamping circuit 36 ​​are electrically connected to the main control module 12.

[0057] The over-temperature protection unit 33 includes a temperature sensor and a temperature control switch. The temperature sensor is electrically connected to the main control module 12, and the temperature control switch is connected in series with the heat dissipation component 28.

[0058] Working principle: When overvoltage occurs at output interface 13;

[0059] First, the overvoltage protection unit 31 is triggered. On the one hand, the voltage clamping circuit 36 ​​clamps the output voltage within a safe range. On the other hand, it sends an overvoltage signal to the main control module 12. The main control module 12 controls the adjustable power supply module 22 to reduce the output voltage. If the overvoltage situation is not relieved, the output circuit of part of the power supply module is cut off. When an overcurrent occurs in the output line, the overcurrent protection unit 32 quickly disconnects the output circuit and simultaneously feeds back a signal to the main control module 12. The main control module 12 suspends the series-parallel switching and reduces the output power of the adjustable power supply module 22. Normal operation is restored after the fault is cleared.

[0060] Next, when the temperature sensor detects that the internal temperature of the power supply housing 11 exceeds the set threshold, the over-temperature protection unit 33 first controls the heat dissipation component 28 to switch to high-speed operation mode; if the temperature continues to rise, the temperature control switch can be triggered to cut off the power supply of part of the adjustable power module 22 and forcibly reduce the power to prevent the module from burning out. When a short circuit occurs at the output interface 13, the short circuit protection unit 35 instantly cuts off the output of the adjustable power module 22, and at the same time the main control module 12 triggers the fault alarm unit 34 to remind the staff to troubleshoot the fault in time.

[0061] This step provides multi-dimensional safety protection for the power supply, effectively ensuring the safe operation of both the power supply and the load.

[0062] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A series-parallel combined envelope tracking power supply, comprising a main power supply structure, characterized in that: Dynamic adjustment structure: The dynamic adjustment structure is symmetrically installed on both sides of the top of the main power supply structure; Power supply main structure: The power supply main structure includes a power supply housing (11), a main control module (12), and an output interface (13); The main control module (12) is fixedly connected to the middle of the inside of the power supply housing (11), and the output interface (13) is fixedly connected to the lower part of one side of the power supply housing (11). Dynamic adjustment structure: The dynamic adjustment structure includes a module mounting bracket (21), an adjustable power module (22), a series-parallel switching circuit (23), and a signal sampling unit (24); The module mounting bracket (21) is fixedly connected to the top two sides of the power supply housing (11). The adjustable power modules (22) are evenly distributed and fixedly connected inside the module mounting bracket (21). The series-parallel switching circuit (23) is fixedly connected to one end of the adjustable power module (22). The signal sampling unit (24) is fixedly connected to one side of the inside of the power supply housing (11). The signal sampling unit (24) is electrically connected to the main control module (12).

2. The series-parallel combined envelope tracking power supply according to claim 1, characterized in that, The dynamic adjustment structure also includes a driver chip (25), a voltage detection unit (26), a current detection unit (27), and a heat dissipation component (28); The driving chip (25) is fixedly connected to one side of the series-parallel switching circuit (23), and the driving chip (25) is electrically connected to the main control module (12). The voltage detection unit (26) is fixedly connected to the output end of the adjustable power module (22). The current detection unit (27) is connected in series in the line of the output interface (13). The heat dissipation component (28) is fixedly connected to both sides of the inner wall of the power housing (11).

3. A series-parallel combined envelope tracking power supply according to claim 2, characterized in that, The adjustable power module (22) is provided in four groups, and each group of adjustable power modules (22) is interconnected through a series-parallel switching circuit (23). The series-parallel switching circuit (23) receives the control signal from the main control module (12) through the driver chip (25).

4. A series-parallel combined envelope tracking power supply according to claim 2, characterized in that, The signal sampling unit (24) includes an envelope extraction circuit and a signal amplification circuit. The input terminal of the signal sampling unit (24) is used to connect to an external signal source, and the output terminal is electrically connected to the signal input terminal of the main control module (12).

5. A series-parallel combined envelope tracking power supply according to claim 1, characterized in that, The main structure of the power supply also includes an input interface (14) and an energy storage capacitor (15); The input interface (14) is fixedly connected to the lower part of the other side of the power supply housing (11), and the input interface (14) is electrically connected to the input terminal of the adjustable power module (22), and the energy storage capacitor (15) is connected in parallel to the output terminal of the adjustable power module (22).

6. A series-parallel combined envelope tracking power supply according to claim 1, characterized in that, It also includes protective structures; The protection structure includes an overvoltage protection unit (31), an overcurrent protection unit (32), an overtemperature protection unit (33), and a fault alarm unit (34); The overvoltage protection unit (31) is connected in parallel to both ends of the output interface (13), the overcurrent protection unit (32) is connected in series in the line of the output interface (13), the overtemperature protection unit (33) is fixedly connected to one side of the heat dissipation component (28), and the fault alarm unit (34) is fixedly connected to the top middle of the power supply housing (11). The overvoltage protection unit (31), the overcurrent protection unit (32), and the overtemperature protection unit (33) are all electrically connected to the signal input terminal of the main control module (12), and the fault alarm unit (34) is electrically connected to the signal output terminal of the main control module (12).

7. A series-parallel combined envelope tracking power supply according to claim 6, characterized in that, The protection structure also includes a short-circuit protection unit (35) and a voltage clamping circuit (36); The short-circuit protection unit (35) is connected in series to the output terminal of the adjustable power module (22), and the voltage clamping circuit (36) is connected in parallel to both ends of the output interface (13). Both the short-circuit protection unit (35) and the voltage clamping circuit (36) are electrically connected to the main control module (12).

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