Power distributor

Abstract

The utility model discloses a power supply distributor which comprises a power supply used for outputting voltage; the first filtering unit is connected to the output end of the power supply and is used for carrying out primary filtering processing on the output voltage; the plurality of level conversion units are respectively connected to the output end of the first filtering unit and are used for level conversion to obtain an intermediate level signal; the plurality of second filtering units are connected to the output ends of the plurality of level conversion units and are used for carrying out secondary filtering processing on the intermediate level signal; the voltage stabilizing units are connected to the output ends of the second filtering units and used for further stabilizing the voltage signals subjected to secondary filtering processing and then outputting final level signals, and under the condition that input is stable, the power supply distributor provided by the utility model is under the full-load test condition, the final output electric plain wave noise is smaller than 5mV, and the output voltage is smaller than 5mV. The single-path maximum output current can be larger than 1A, the maximum single-path conversion efficiency can reach 80%, and the use requirements of most scenes can be met.

Description

Technical Field

[0001] This application relates to the field of power supply technology, specifically to a power distributor. Background Technology

[0002] In real-world laboratory environments, for experiments involving sophisticated sensor development, analog operational amplifier power supply, and ADC acquisition, multi-potential power supply is often required. While power requirements are not high, the requirements for power supply ripple and noise are quite stringent. The appropriate solution is typically an adjustable linear regulated DC power supply, which contains an internal transformer. These power supplies are generally large and heavy, and their output is usually unidirectional and dual-channel adjustable. In both positive and negative power supply environments, a single power supply can only provide one set of potentials. Multiple potentials require the use of a separate power supply, resulting in high costs and difficulties in layout, placement, and wiring in a laboratory environment. Furthermore, current DC power supplies have excessive power redundancy, and in most cases, only about 10% of the power is needed.

[0003] Existing solutions typically use multiple adjustable linear regulated DC power supplies or multiple LDO (low dropout linear regulated power supply) chips for power redistribution. However, LDOs have extremely weak load-carrying capacity and very low conversion efficiency in scenarios with large voltage drops, making it impossible to achieve large voltage drop distribution when supplying power uniformly. Summary of the Invention

[0004] To address the problems existing in the prior art, this application provides a power distributor that redistributes the power supply voltage while ensuring that the noise ripple meets the requirements, thereby achieving the technical effect of providing positive and negative voltages under the same power supply voltage.

[0005] To achieve the above-mentioned technical effects, the technical solution adopted in this application is: a power distributor, comprising,

[0006] Power supply, used to output voltage;

[0007] The first filtering unit is connected to the output terminal of the power supply and is used to perform primary filtering on the output voltage.

[0008] Several level conversion units are connected to the output of the first filter unit to convert the level and obtain an intermediate level signal;

[0009] Several second filtering units are connected to the output terminals of several level conversion units to perform secondary filtering on intermediate level signals;

[0010] Several voltage regulation units are connected to the output terminals of several second filter units to further stabilize the voltage signal after secondary filtering, and then output the final level signal.

[0011] In one possible implementation, the power supply is a linear regulated power supply.

[0012] In one possible implementation, the first filtering unit is selected from either a filter or a ferrite bead.

[0013] In one possible implementation, the level conversion unit is a DC-DC buck converter chip.

[0014] In one possible implementation, the second filtering unit is selected from either a filter or a ferrite bead.

[0015] In one possible implementation, the voltage regulator unit is an LDO chip.

[0016] In one possible implementation, the voltage of the intermediate level signal is 2V higher than that of the final level signal.

[0017] The technical advantages of this application are: under relatively stable input conditions, the power distributor provided by this application has a final output level ripple noise of less than 5mV under full load test conditions, a maximum single-channel output current of more than 1A, and a maximum single-channel conversion efficiency of 80%, which can meet the requirements of most application scenarios. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings required in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the power distributor provided in one embodiment of this application. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] It should be noted that, where there is no conflict, different features in the embodiments of this application can be combined with each other.

[0026] To address the problems in the existing technology, please refer to... Figure 1 In one possible implementation, Figure 1 A power distributor is provided, comprising,

[0027] The power supply is used to output voltage and provide voltage input to the overall power distributor. The type of power supply is not limited and can be selected according to the actual working conditions. For example, a DC power supply or an AC power supply can be selected.

[0028] The first filtering unit is connected to the output terminal of the power supply and is used to perform a primary filtering process on the output voltage. The first filtering unit can perform a primary filtering process on the voltage output by the power supply to remove high-frequency noise and interference in the power supply and improve the purity of the voltage signal.

[0029] Several second filtering units are connected to the output terminals of several level conversion units to perform secondary filtering on the intermediate level signal; secondary filtering on the intermediate level signal can further remove noise or interference that may be introduced during the level conversion process.

[0030] Several voltage regulation units are connected to the output terminals of several second filter units to further stabilize the voltage signal after secondary filtering, and then output the final level signal. The regulated power supply can further stabilize the voltage signal after secondary filtering to ensure that the output final level signal has extremely high stability and reliability.

[0031] In one embodiment of this application, the power supply is a linear regulated power supply, which has the advantages of stable output voltage and low ripple.

[0032] In one embodiment of this application, the first filtering unit is selected from either a filter or a ferrite bead. The filter can attenuate or enhance signals of a specific frequency through a combination of internal components such as inductors and capacitors to achieve the purpose of filtering; the ferrite bead utilizes the principle of electromagnetic induction to generate a large impedance to high-frequency signals, thereby suppressing high-frequency noise and achieving the effect of filtering.

[0033] In one embodiment of this application, the level conversion unit is a DC-DC step-down chip. The DC-DC chip can convert a higher input voltage into a lower, stable output voltage. The DC-DC step-down chip is selected in this embodiment mainly because it has the characteristics of high efficiency, small size, low power consumption, good stability, high integration, space saving, cost reduction, and improved manufacturing efficiency.

[0034] In one embodiment of this application, the second filtering unit is selected from a filter or a ferrite bead.

[0035] In one embodiment of this application, the voltage regulator unit is an LDO chip. The LDO chip selected in this embodiment mainly suppresses noise ripple. The noise ripple is linear. A DC-DC step-down chip is added before the LDO to reduce the voltage drop. The magnitude of the voltage drop determines the power loss of the overall power distributor (used for heat generation). The output power of the LDO chip = input power - voltage drop * output current. An excessively large voltage drop will lead to severe heat generation and may even burn out the device.

[0036] In one possible implementation, the voltage of the intermediate level signal is 2V higher than that of the final level signal.

[0037] In summary, the technical solution achieves a final output signal ripple noise level better than 5mV, a maximum single-channel output current greater than 1A, and a maximum single-channel conversion efficiency of 80%, meeting the requirements of most application scenarios. The power distributor provided in this application can redistribute the power supply voltage while ensuring that the noise ripple meets the requirements. It can provide positive and negative voltages under the premise of the same source voltage, allowing for a relatively high voltage difference and a certain load-carrying capacity. The overall power distributor is compact and low in cost.

Claims

1. A power distributor, characterized by, The application relates to a power supply device, comprising: a power supply for outputting a voltage; a first filter unit connected to the output end of the power supply for performing a first filtering process on the output voltage; a plurality of level conversion units respectively connected to the output end of the first filter unit for level conversion to obtain intermediate level signals; a plurality of second filter units connected to the output end of the plurality of level conversion units for performing a second filtering process on the intermediate level signals; a plurality of voltage stabilizing units connected to the output end of the plurality of second filter units for further stabilizing the voltage signals after the second filtering process and then outputting final level signals.

2. The power distributor of claim 1, wherein: The power supply is a linear voltage stabilizing power supply.

3. The power distributor of claim 1, wherein: The first filter unit is selected from one of a filter and a magnetic bead.

4. The power distributor of claim 1, wherein: The level conversion unit is a DC-DC voltage reduction chip.

5. The power distributor of claim 1, wherein: The second filter unit is selected from one of a filter and a magnetic bead.

6. The power distributor of claim 1, wherein: The voltage stabilizing unit is an LDO chip.

7. The power distributor of claim 1, wherein: The voltage of the intermediate level signal is 2V higher than that of the final level signal.

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