All-solid-state programmable pulse power supply

Abstract

The utility model discloses an all-solid-state programmable pulse power supply which is composed of a working power supply, a high-speed D / A converter, an anti-burr filter used for carrying out low-pass filtering on differential signals output by the high-speed D / A converter, and a high-power follower used for outputting high-voltage large-current pulse signals. And the working power supply, the high-speed D / A converter, the anti-burr filter and the high-power follower are connected in sequence. According to the utility model, the numerical control circuit is adopted to control the output voltage and waveform without an energy storage capacitor with a large volume in a traditional pulse power supply, so that the pulse power supply has the advantage of small volume; the high-speed D / A converter U6 is used for controlling output, a mechanical relay in a traditional pulse power supply is omitted, signal output time can be accurately controlled, burning of a mechanical contact is avoided, the service life is long, mistaken opening and closing of a relay coil due to strong electromagnetic interference are avoided, and the pulse power supply has the advantages of stability and reliability.

Description

TECHNICAL FIELD

[0001] The utility model belongs to power supply technical field especially relates to a full solid programmable pulse power supply. BACKGROUND

[0002] The principle of pulse power supply is to make the primary energy have enough energy through slow energy storage, then charge (or flow into energy) to the intermediate energy storage and pulse forming system, and finally discharge to the load after some complex processes such as energy storage, compression, pulse formation or conversion.

[0003] Due to the intermittent power supply characteristics of pulse power supply, it has been widely used in many fields. The existing pulse power supply discharges through closing the relay after simple capacitor energy storage, which has the following defects:

[0004] (1) A large volume of energy storage capacitor is used, so the power supply is large in size;

[0005] (2) The mechanical contact needs a certain time to close, and there is a certain delay from the output instruction to the signal output, which leads to the difference in output time caused by the different environment of the relay, so that the signal output time cannot be accurately controlled, which limits its application, and when the relay contact is separated, the strong signal energy will cause arc burning phenomenon, which leads to the short service life of the pulse power supply;

[0006] (4) It is affected by strong electromagnetic interference, which leads to the error opening and closing of the relay coil, and the stability and reliability are poor.

[0007] (5) The output of the existing pulse power supply is related to the capacitor voltage, which cannot be automatically adjusted, and the output capacity is limited. INVENTION CONTENTS

[0008] The utility model aims at providing a full solid programmable pulse power supply which is simple in structure, low in cost, small in size, high in efficiency, long in service life, high in repetition frequency, stable in work, and simple in maintenance.

[0009] The utility model realizes the purpose by the following technical measures: a full solid programmable pulse power supply is characterized by comprising a working power supply, a high-speed D / A converter, a anti-spur filter for low-pass filtering the differential signal output by the high-speed D / A converter, and a high-power follower for outputting a high-voltage and high-current pulse signal, wherein the working power supply, the high-speed D / A converter, the anti-spur filter and the high-power follower are sequentially connected.

[0010] The utility model discloses adopt numerical control circuit control output voltage and waveform, do not have the energy storage capacitor of bigger volume in traditional pulse power, therefore have the advantage of small size, because adopt high -speed D / A converter U6 control output, do not have the mechanical relay in traditional pulse power, can accurately control signal output time, and there is no mechanical contact burning condition, therefore long service life, also will not be caused by strong electromagnetic interference and lead to relay coil error opening and closing, with stable and reliable advantage.

[0011] The anti-burr filter is an RC filter circuit composed of surface-mounted resistance and capacitance, and the cutoff frequency is 30MHz.

[0012] The high-power follower is composed of an OPA552 element.

[0013] The high-speed D / A converter adopts a high-performance 3PD5651E, the conversion bit number of the digital-analog converter is 10 bits, the voltage control precision is 3.2 millivolts, the maximum conversion speed is 125MSPS, and the waveform adjustment interval is 8 nanoseconds.

[0014] Compared with the prior art, the utility model has the following remarkable effects:

[0015] (1) the utility model adopts numerical control circuit control output voltage and waveform, do not have the energy storage capacitor of bigger volume in traditional pulse power, therefore have the advantage of small size.

[0016] (2) the utility model adopts high-speed D / A converter U6 control output, do not have the mechanical relay in traditional pulse power, can accurately control signal output time, and there is no mechanical contact burning condition, long service life, also will not be caused by strong electromagnetic interference and lead to relay coil error opening and closing, with stable and reliable advantage.

[0017] (3) the utility model has simple structure, low cost, simple maintenance, strong practicality, is suitable for extensive promotion and use. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0019] Figure 1 It is the component structure schematic drawing of the utility model;

[0020] Figure 2 It is the circuit diagram of the utility model. CONCRETE EMBODIMENT

[0021] 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.

[0022] like Figure 1 , Figure 2 As shown, this utility model discloses an all-solid-state programmable pulse power supply, which consists of a working power supply, a high-speed D / A converter, an anti-glitch filter for low-pass filtering of the differential signal output by the high-speed D / A converter, and a high-power follower for outputting high-voltage, high-current pulse signals. The working power supply, high-speed D / A converter, anti-glitch filter, and high-power follower are connected in sequence.

[0023] An anti-glitch filter is an RC filter circuit composed of surface-mount resistors and capacitors with a cutoff frequency of 30MHz. It is used for low-pass filtering of the differential signal output from a high-speed D / A converter, such as... Figure 2 As shown, the anti-glitch filter consists of vertical resistors, capacitors, and resistive elements between U6 and U7.

[0024] The high-power follower is composed of OPA552 components and can output high-voltage, high-current pulse signals.

[0025] The high-speed D / A converter uses the high-performance 3PD5651E, which has a 10-bit digital-to-analog conversion bit, a voltage control accuracy of 3.2 millivolts, a maximum conversion speed of 125 MSPS, and a waveform adjustment interval of 8 nanoseconds.

[0026] The working principle of this utility model is as follows: the positive terminal of the lithium battery is connected to pin 2 (BAT) of the working power supply U5. The working power supply converts the 12V battery voltage to 5V for use by other modules. The control signal is connected to the high-speed D / A converter through DAD0 to DAD9. Its signal output is connected to the anti-glitch filter, then input to the high-power follower, and finally output to the output wire.

[0027] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. An all-solid-state programmable pulse power supply, characterized by: It is composed of working power supply, high-speed D / A converter, anti-spur filter for low-pass filtering differential signal output by high-speed D / A converter and high-power follower for outputting high-voltage and large-current pulse signal, and the working power supply, high-speed D / A converter, anti-spur filter and high-power follower are sequentially connected.

2. The all-solid-state programmable pulse power supply of claim 1, wherein: The anti-spur filter is an RC filter circuit composed of surface-mounted resistor and capacitor, and the cut-off frequency is 30 MHz.

3. The all-solid-state programmable pulse power supply of claim 2, wherein: The high-power follower is composed of OPA552 element.

4. The all-solid-state programmable pulse power supply of claim 3, wherein: The high-speed D / A converter adopts high-performance 3PD5651E, the digital-to-analog conversion bit number is 10 bits, the voltage control precision is 3.2 millivolt, the maximum conversion speed is 125 MSPS, and the waveform adjustment interval is 8 nanoseconds.

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