CN106787764B

CN106787764B - DC/DC device

Info

Publication number: CN106787764B
Application number: CN201710060030.5A
Authority: CN
Inventors: 李锟
Original assignee: Guangzhou Jetekps Electronics Co ltd
Current assignee: Chongqing Jute Electronic Co ltd
Priority date: 2017-01-24
Filing date: 2017-01-24
Publication date: 2023-03-17
Anticipated expiration: 2037-01-24
Also published as: CN106787764A

Abstract

The invention provides a DC/DC device, comprising: the circuit comprises a self-excited oscillator, a first transformer, a first mos tube, a second mos tube, a third mos tube, a fourth mos tube, a first capacitor and a second capacitor; the self-excited oscillator comprises a second transformer, and the second transformer of the self-excited oscillator comprises 10 angles which are respectively 1 angle, 2 angles, 3 angles, 4 angles, 5 angles, 6 angles, 7 angles, 8 angles, 9 angles and 10 angles. Generating high-frequency sine wave signals through a self-excited oscillator, enabling a first mos tube, a second mos tube, a third mos tube and a fourth mos tube to obtain completely symmetrical sine wave driving voltages, outputting alternating voltages through isolation and transformation of a transformer, and finally converting the alternating voltages into direct-current voltages through a second capacitor to output; by adopting the completely symmetrical sine wave drive, all devices can work under extremely low voltage, and the device is suitable for DC/DC under low voltage.

Description

DC/DC device

Technical Field

The invention relates to the electrical field, in particular to a DC/DC device.

Background

In the prior art, the requirement that each component can normally work even under extremely low voltage exists, but at present, a good scheme is not provided for meeting the requirement.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a DC/DC device which is used for overcoming the defects in the prior art.

Specifically, the present invention proposes the following specific examples:

the embodiment of the invention provides a DC/DC device, which comprises: the circuit comprises a self-excited oscillator, a first transformer, a first mos tube, a second mos tube, a third mos tube, a fourth mos tube, a first capacitor and a second capacitor; wherein,

the self-excited oscillator comprises a second transformer, and the second transformer of the self-excited oscillator comprises 10 angles which are respectively 1 angle, 2 angles, 3 angles, 4 angles, 5 angles, 6 angles, 7 angles, 8 angles, 9 angles and 10 angles;

the G pole of the first mos tube is connected with a 10-degree angle; the D pole of the first mos tube is connected with a first coil of a first transformer; the S pole of the first mos tube is grounded;

the G pole of the second mos tube is connected with an angle of 8; the D pole of the second mos tube is connected with the first coil of the transformer; the S pole of the second mos tube is grounded;

the G pole of the third mos tube is connected with an angle of 5; the D pole of the third mos tube is connected with the second coil of the first transformer; the S pole of the third mos tube is connected with the S pole of the fourth mos tube and one end of the second capacitor;

the G pole of the fourth mos tube is connected with a 7-corner; the D pole of the fourth mos tube is connected with the second coil of the first transformer; the S pole of the fourth mos tube is connected with the S pole of the second mos tube and one end of the second capacitor;

the other end of the second capacitor is connected with a second coil of the first transformer;

one end of the first capacitor is connected with the first coil of the first transformer, and the other end of the first capacitor is connected with the S pole of the second mos tube.

In a specific embodiment, the free running oscillator further comprises: the first resistor, the second resistor, the third capacitor, the fourth capacitor, the fifth capacitor, the seventh triode and the eighth triode; wherein,

one end of the first resistor is connected with the 1 corner, one end of the third capacitor and the collector of the eighth triode; the other end of the first resistor is connected with one end of the third capacitor and one end of the fifth capacitor;

one end of the second resistor is connected with the 4-corner resistor, one end of the fourth resistor and the collector of the seventh triode; the other end of the second resistor is connected with the other end of the fourth resistor and the other end of the fifth capacitor;

one end of the fifth capacitor is connected with the base electrode of the eighth triode, one end of the fourth capacitor and one end of the second resistor; the other end of the fifth capacitor is connected with a base electrode of the seventh triode, one end of the third capacitor and one end of the first resistor;

an emitting electrode of the seventh triode is grounded;

and the emitter of the eighth triode is grounded.

In a specific embodiment, the first capacitance is a fixed capacitor.

In a specific embodiment, the first capacitance is the same as the second capacitance.

In a specific embodiment, the first transformer is specifically a high frequency transformer.

In a specific embodiment, the first resistor is a resistor with an adjustable resistance value.

In a specific embodiment, the first resistance is the same as the second resistance.

In a specific embodiment, the third capacitance is the same as the fourth capacitance.

In a specific embodiment, the seventh transistor is specifically a germanium transistor.

In a specific embodiment, the seventh transistor is the same as the eighth transistor.

Thus, the present invention provides a DC/DC apparatus comprising: the circuit comprises a self-excited oscillator, a first transformer, a first mos tube, a second mos tube, a third mos tube, a fourth mos tube, a first capacitor and a second capacitor; the self-excited oscillator comprises a second transformer, and the second transformer of the self-excited oscillator comprises 10 angles which are respectively 1 angle, 2 angles, 3 angles, 4 angles, 5 angles, 6 angles, 7 angles, 8 angles, 9 angles and 10 angles; the G pole of the first mos tube is connected with 10 corners; the D pole of the first mos tube is connected with a first coil of a first transformer; the S pole of the first mos tube is grounded; the G pole of the second mos tube is connected with an angle of 8; the D pole of the second mos tube is connected with the first coil of the transformer; the S pole of the second mos tube is grounded; the G pole of the third mos tube is connected with an angle of 5; the D pole of the third mos tube is connected with the second coil of the first transformer; the S pole of the third mos tube is connected with the S pole of the fourth mos tube and one end of the second capacitor; the G pole of the fourth mos tube is connected with a 7-corner; the D pole of the fourth mos tube is connected with the second coil of the first transformer; the S pole of the fourth mos tube is connected with the S pole of the second mos tube and one end of the second capacitor; the other end of the second capacitor is connected with a second coil of the first transformer; one end of the first capacitor is connected with the first coil of the first transformer, and the other end of the first capacitor is connected with the S pole of the second mos tube. Generating high-frequency sine wave signals through a self-excited oscillator, enabling a first mos tube, a second mos tube, a third mos tube and a fourth mos tube to obtain completely symmetrical sine wave driving voltages, outputting alternating voltages through isolation and transformation of a transformer, and finally converting the alternating voltages into direct-current voltages through a second capacitor to output; by adopting the completely symmetrical sine wave drive, all devices can work under extremely low voltage, and the device is suitable for DC/DC under low voltage.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a DC/DC apparatus according to an embodiment of the present invention.

Illustration of the drawings:

1: self-excited oscillator 11 second transformer

12 first resistor 13 second resistor

14: third capacitor 15: fourth capacitor

16: a fifth capacitor 17: a seventh triode 18: an eighth triode

2: first transformer

3: first mos tube 4: second mos tube

5: third mos tube 6: fourth mos tube

7: first capacitor 8: second capacitor

Detailed Description

Various embodiments of the present disclosure will be described more fully hereinafter. The present disclosure is capable of various embodiments and of modifications and variations therein. However, it should be understood that: there is no intention to limit the various embodiments of the disclosure to the specific embodiments disclosed herein, but rather, the disclosure is to cover all modifications, equivalents, and/or alternatives falling within the spirit and scope of the various embodiments of the disclosure.

Hereinafter, the term "includes" or "may include" used in various embodiments of the present disclosure indicates the presence of the disclosed functions, operations, or elements, and does not limit the addition of one or more functions, operations, or elements. Furthermore, as used in various embodiments of the present disclosure, the terms "comprising," "having," and their derivatives, are intended to be inclusive and mean only that a particular feature, number, step, operation, element, component, or combination of the foregoing is meant, and should not be construed as first excluding the presence of, or adding to, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.

In various embodiments of the disclosure, the expression "or" at least one of a or/and B "includes any or all combinations of the words listed simultaneously. For example, the expression "a or B" or "at least one of a or/and B" may include a, may include B, or may include both a and B.

Expressions (such as "first", "second", and the like) used in various embodiments of the present disclosure may modify various constituent elements in the various embodiments, but may not limit the respective constituent elements. For example, the above description does not limit the order and/or importance of the elements described. The above description is only intended to distinguish one element from another. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of various embodiments of the present disclosure.

It should be noted that: if it is described that one constituent element is "connected" to another constituent element, the first constituent element may be directly connected to the second constituent element, and a third constituent element may be "connected" between the first constituent element and the second constituent element. In contrast, when one constituent element is "directly connected" to another constituent element, it is understood that there is no third constituent element between the first constituent element and the second constituent element.

The term "user" as used in various embodiments of the present disclosure may indicate a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).

The terminology used in the various embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the disclosure. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the present disclosure belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined in various embodiments of the present disclosure.

Example 1

Embodiment 1 of the present invention discloses a DC/DC apparatus, as shown in fig. 1, including: the circuit comprises a self-excited oscillator 1, a first transformer 2, a first mos tube 3, a second mos tube 4, a third mos tube 5, a fourth mos tube 6, a first capacitor 7 and a second capacitor 8; wherein,

the self-excited oscillator comprises a second transformer 11, and the second transformer of the self-excited oscillator comprises 10 angles which are respectively 1 angle, 2 angles, 3 angles, 4 angles, 5 angles, 6 angles, 7 angles, 8 angles, 9 angles and 10 angles;

the G pole of the first mos tube is connected with 10 corners; the D pole of the first mos tube is connected with a first coil of a first transformer; the S pole of the first mos tube is grounded;

In particular, a self-excited oscillator (self-excited oscillator) is a feedback control system. If the closed-loop poles of the system have a pair of conjugate poles located on the right half-plane of S, the impulse response will produce a sine wave with an exponentially increasing magnitude. Theoretically, the amplitude of the oscillation will increase indefinitely. However, due to the nonlinear effect of the system internal components, the increased oscillation causes the internal parameters of the system to automatically change, so that the conjugate pole on the right half-plane of S is finally shifted to the j omega axis, and the sine wave is stabilized in constant amplitude before oscillation.

In an amplifying circuit, in order to improve circuit performance, negative feedback (intermediate frequency region) is generally introduced. Negative feedback in a circuit becomes positive when the circuit adds a phase shift (high frequency region or low frequency region) that changes the polarity of the feedback signal. At this time, if the gain of the feedback loop satisfies a certain condition, the circuit will generate self-oscillation.

Specifically, the self-excited oscillator 1 further includes: a first resistor 12, a second resistor 13, a third capacitor 14, a fourth capacitor 15, a fifth capacitor 16, a seventh triode 17 and an eighth triode 18; wherein,

the emitter of the seventh triode is grounded;

and the emitter of the eighth triode is grounded.

Thus, as shown in fig. 1, the power supply voltage is input from VCC and GND, the self-excited oscillator is composed of Q7, Q8, R1, R2, C3, C4 and C5, the high-frequency sine wave signal is generated and output from T2, the control ends of Q1 and Q2, Q3 and Q4 obtain completely symmetrical sine wave driving voltage, the alternating voltage is output through the isolation and transformation of the high-frequency transformer, and the direct current power supply is obtained through C2.

The circuit is driven by completely symmetrical sine waves, and devices can work under extremely low voltage, so that the circuit is suitable for low-voltage DC (direct current) DC

In a specific embodiment, the first capacitance is a fixed capacitor.

The capacitance, i.e. the capacity of a capacitor, usually referred to simply as its capacity to hold a charge, is denoted by the letter C. Definition 1: a capacitor, as the name implies, is an 'electrically charged container', a device that contains an electrical charge. English name: a capacitor. The capacitor is one of electronic elements widely used in electronic equipment, and is widely applied to aspects of blocking AC, coupling, bypassing, filtering, tuning loop, energy conversion, control and the like in a circuit. Definition 2: a capacitor is formed between any two conductors (including wires) which are insulated and closely spaced from each other.

In particular, when filtering is performed, a capacitor used in a filter circuit is called a filter capacitor, and such a capacitor circuit is used in a power supply filter and various filter circuits, and the filter capacitor removes a signal in a certain frequency band from a total signal.

The high-frequency transformer is a power transformer with the working frequency exceeding the intermediate frequency (10 kHz), is mainly used as a high-frequency switching power transformer in a high-frequency switching power supply, and is also used as a high-frequency inverter power transformer in a high-frequency inverter power supply and a high-frequency inverter welding machine. According to the working frequency, the method can be divided into several grades: 10kHz-50kHz, 50kHz-100kHz, 100 kHz-500 kHz, 500 kHz-1 MHz and more than 10 MHz.

The resistance, i.e. the Resistor (Resistor), is commonly and directly referred to as resistance in daily life. Is a current limiting element, and after a resistor is connected in a circuit, the resistance value of the resistor is fixed, generally two pins, and the resistor can limit the current passing through a branch connected with the resistor. The resistor whose resistance value cannot be changed is called a fixed resistor. Variable resistance is called a potentiometer or a variable resistor. Ideally the resistor is linear, i.e. the instantaneous current through the resistor is proportional to the instantaneous voltage applied. A variable resistor for voltage division. On the exposed resistor body, one or two movable metal contacts are pressed. The contact position determines the resistance between either end of the resistor and the contact.

Those skilled in the art will appreciate that the drawings are merely schematic representations of preferred embodiments and that the blocks or flowchart illustrations are not necessary to practice the present invention.

Those skilled in the art will appreciate that the modules in the devices in the implementation scenario may be distributed in the devices in the implementation scenario according to the description of the implementation scenario, or may be located in one or more devices different from the present implementation scenario with corresponding changes. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.

The above-mentioned invention numbers are merely for description and do not represent the merits of the implementation scenarios.

The above disclosure is only a few specific implementation scenarios of the present invention, however, the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. A DC/DC apparatus, comprising: the circuit comprises a self-excited oscillator, a first transformer, a first mos tube, a second mos tube, a third mos tube, a fourth mos tube, a first capacitor and a second capacitor; wherein,

2. The apparatus of claim 1, wherein the free running oscillator further comprises: the first resistor, the second resistor, the third capacitor, the fourth capacitor, the fifth capacitor, the seventh triode and the eighth triode; wherein,

the emitter of the seventh triode is grounded;

and the emitter of the eighth triode is grounded.

3. The apparatus of claim 1, wherein the first capacitance is a fixed capacitor.

4. The apparatus of claim 1, wherein the first capacitance is the same as the second capacitance.

5. The apparatus according to claim 1, wherein the first transformer is in particular a high frequency transformer.

6. The apparatus of claim 2, wherein the first resistor is a resistor with an adjustable resistance value.

7. The apparatus of claim 2, wherein the first resistance is the same as the second resistance.

8. The apparatus of claim 2, wherein the third capacitance is the same as the fourth capacitance.

9. The apparatus of claim 2, wherein the seventh transistor is specifically a germanium transistor.

10. The apparatus of claim 2, wherein the seventh transistor is the same as the eighth transistor.