CN217506428U

CN217506428U - Power supply voltage stabilizing circuit and circuit equipment thereof

Info

Publication number: CN217506428U
Application number: CN202221347058.XU
Authority: CN
Inventors: 杨书伟; 曹文华; 赵平桥; 刘峥炜; 陈华柠
Original assignee: Jiangmen Sparkguard Electric Technology Co ltd
Current assignee: Jiangmen Sparkguard Electric Technology Co ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-09-27
Anticipated expiration: 2032-05-31

Abstract

The embodiment of the utility model provides a power voltage stabilizing circuit and circuit equipment thereof, power voltage stabilizing circuit includes: the alternating current input end is used for connecting alternating current commercial power; the non-isolated off-line regulator is used for carrying out pressure reduction treatment; the surge suppression module is connected between the alternating current access end and the non-isolated offline regulator; the filtering module is connected with the output end of the non-isolated off-line regulator; and the linear voltage stabilizer is connected with the filtering module. According to the utility model discloses the scheme for circuit output voltage remains stable, has improved the security of using.

Description

Power supply voltage stabilizing circuit and circuit equipment thereof

Technical Field

The utility model relates to a circuit equipment field, in particular to power voltage stabilizing circuit and circuit equipment thereof.

Background

With the continuous development of economy, the safety power utilization consciousness of people is continuously enhanced, and the leakage circuit breaker is more and more applied to the life and work scenes of people; the earth leakage circuit breaker is developed towards high reliability, high stability and miniaturization, but the output voltage of the circuit in the prior art is unstable, and the stability of the voltage is lower if the loads in the circuit are more, thereby bringing unstable safety factors to people.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

Therefore, the utility model provides a power voltage stabilizing circuit for circuit output voltage remains stable, has improved the security of using.

The utility model discloses still provide a circuit equipment who possesses above-mentioned power voltage stabilizing circuit.

According to the utility model discloses power voltage stabilizing circuit of first aspect embodiment, include:

the alternating current access end is used for connecting alternating current commercial power;

the non-isolated off-line regulator is used for carrying out pressure reduction treatment;

the surge suppression module is connected between the alternating current access end and the non-isolated offline regulator;

the filtering module is connected with the output end of the non-isolated off-line regulator;

and the linear voltage stabilizer is connected with the filtering module.

According to the utility model discloses power voltage stabilizing circuit has following beneficial effect at least: the alternating current incoming end is used for connecting alternating current commercial power, and non-isolated off-line regulator is used for stepping down and handles, and surge suppression module is arranged in suppressing the filtering to the surge signal in the circuit and handles, and filtering module can carry out the filtering to the noise in the circuit and handle, and linear voltage regulator can further step down steady voltage and handle, and each part in the circuit mutually supports makes the voltage of circuit output can remain stable, has improved the security in the use.

According to the utility model discloses a some embodiments, surge suppression module includes first diode, second diode, first resistance and fourth polarity electric capacity, exchange the incoming end first diode the second diode first resistance with non-isolation formula off-line regulator's input connects gradually, fourth polarity electric capacity connect in between non-isolation formula off-line regulator's input and the reference ground.

According to some embodiments of the present invention, the filtering module includes first inductance, fourth schottky diode, eighth polarity electric capacity, seventh electric capacity and sixth resistance, the one end of first inductance with the output of non-isolated off-line regulator is connected, the negative pole of fourth schottky diode with the one end of first inductance is connected, the positive pole of eighth polarity electric capacity the one end of seventh electric capacity with the one end of sixth resistance all with the other end of first inductance is connected, the positive pole of fourth schottky diode the negative pole of eighth polarity electric capacity the other end of seventh electric capacity with the other end of sixth resistance all is connected with the ground of reference.

According to some embodiments of the present invention, the linear regulator further comprises a regulation module, the regulation module is connected to the filtering module and between the linear regulators.

According to the utility model discloses a some embodiments, the regulation module includes triode, fifth resistance, tenth electric capacity and ninth polarity electric capacity, the negative pole of ninth polarity electric capacity with the one end of tenth electric capacity all is connected with the reference ground, the positive pole of ninth polarity electric capacity with the other end of tenth electric capacity all with the base of triode is connected, fifth resistance connect in between the base and the collecting electrode of triode, the projecting pole of triode with linear voltage regulator connects.

According to some embodiments of the invention, the model of the non-isolated offline regulator is MP 173.

According to some embodiments of the invention, the linear regulator is model TPL810F 33.

According to some embodiments of the present invention, the type of the triode is MMBT 9018H.

According to some embodiments of the invention, the fourth schottky diode is model ES 2J.

According to the utility model discloses circuit equipment of second aspect embodiment, including the power voltage stabilizing circuit of above-mentioned first aspect.

According to the utility model discloses circuit equipment has following beneficial effect at least: the alternating current incoming end is used for connecting alternating current commercial power, and non-isolated off-line regulator is used for stepping down and handles, and surge suppression module is arranged in suppressing the filtering to the surge signal in the circuit and handles, and filtering module can carry out the filtering to the noise in the circuit and handle, and linear voltage regulator can further step down steady voltage and handle, and each part in the circuit mutually supports makes the voltage of circuit output can remain stable, has improved the security in the use.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosed embodiments and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the example serve to explain the principles of the disclosure and not to limit the disclosure.

Fig. 1 is a schematic block diagram of a power supply voltage stabilizing circuit according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a surge suppression module of a power supply voltage stabilizing circuit according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a non-isolated off-line regulator circuit of a power supply voltage stabilizing circuit according to an embodiment of the present invention;

fig. 4 is a schematic circuit diagram of a filter module of a power supply voltage stabilizing circuit according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a regulating module circuit of a power supply voltage stabilizing circuit according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a linear regulator circuit for a power supply voltage regulator according to an embodiment of the present invention.

Reference numerals are as follows:

the device comprises an alternating current access end 100, a surge suppression module 200, a non-isolated offline regulator 300, a filtering module 400, a regulating module 500 and a linear regulator 600.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The embodiments of the present invention will be further explained with reference to the drawings.

As shown in fig. 1, fig. 1 is a power supply voltage stabilizing circuit provided by an embodiment of the present invention, which includes an ac access terminal 100, a surge suppression module 200, a non-isolated offline regulator 300, a filtering module 400, and a linear regulator 600; the alternating current access end 100 is used for connecting alternating current mains supply; the non-isolated offline regulator 300, wherein the non-isolated offline regulator 300 is used for performing a voltage reduction process; the surge suppression module 200, the surge suppression module 200 is connected between the ac access terminal 100 and the non-isolated offline regulator 300; the filtering module 400, the filtering module 400 is connected with the output end of the non-isolated off-line regulator 300; and the linear voltage regulator 600, wherein the linear voltage regulator 600 is connected with the filtering module 400.

It should be noted that the ac access terminal 100 is used to connect an ac mains supply, the non-isolated offline regulator 300 is used to perform voltage reduction processing, the surge suppression module 200 is used to suppress and filter surge signals in the circuit, the filter module 400 can filter noise in the circuit, the linear regulator 600 can further perform voltage reduction and voltage stabilization processing, and each component in the circuit is matched with each other to keep the voltage output by the circuit stable, thereby improving the safety in use.

Referring to fig. 2, in some embodiments of the present invention, the surge suppressing module 200 includes a first diode D1, a second diode D2, a first resistor R1 and a fourth polar capacitor C4, the ac input terminal, the first diode D1, the second diode D2, the first resistor R1 and the input terminal of the non-isolated offline regulator 300 are sequentially connected, and the fourth polar capacitor C4 is connected between the input terminal of the non-isolated offline regulator 300 and the reference ground.

It should be noted that, the first diode D1 and the second diode D2 both enable signals to be conducted in a single direction, and the fourth polar capacitor C4 can well suppress surge signals in the line, filter the surge signals in the line, and prevent other components in the circuit from being damaged due to surge impact.

Referring to fig. 4, in some embodiments of the present invention, the filtering module 400 includes a first inductor L1, a fourth schottky diode D4, an eighth polar capacitor C8, a seventh capacitor C7 and a sixth resistor R6, one end of the first inductor L1 is connected to the output end of the non-isolated offline regulator 300, a cathode of the fourth schottky diode D4 is connected to one end of the first inductor L1, an anode of the eighth polar capacitor C8, one end of the seventh capacitor C7 and one end of the sixth resistor R6 are all connected to the other end of the first inductor L1, and an anode of the fourth schottky diode D4, a cathode of the eighth polar capacitor C8, the other end of the seventh capacitor C7 and the other end of the sixth resistor R6 are all connected to the reference ground.

It should be noted that the first inductor L1 can realize the function of direct current resistance and alternating current resistance, and the eighth polar capacitor C8 and the seventh capacitor C7 can filter noise in the circuit; the fourth schottky diode D4 is a low power consumption, ultra high speed semiconductor device, and is widely used in circuits such as switching power supplies, frequency converters, and drivers, as high frequency, low voltage, and large current rectifier diodes, flywheel diodes, and protection diodes, or as rectifier diodes and small signal detector diodes in circuits such as microwave communications.

Referring to fig. 1, in some embodiments of the present invention, the present invention further comprises a regulation module 500, and the regulation module 500 is connected between the filtering module 400 and the linear regulator 600.

It should be noted that the adjusting module 500 is connected between the filtering module 400 and the linear regulator 600, and further, the signal filtered by the filtering module 400 can be adjusted and changed in voltage by the adjusting module 500.

Referring to fig. 5, in some embodiments of the present invention, the adjusting module 500 includes a transistor Q1, a fifth resistor R5, a tenth capacitor C10 and a ninth capacitor C9, a negative electrode of the ninth capacitor C9 and one end of the tenth capacitor C10 are all connected to the reference ground, a positive electrode of the ninth capacitor C9 and the other end of the tenth capacitor C10 are all connected to the base of the transistor Q1, a fifth resistor R5 is connected between the base and the collector of the transistor Q1, and an emitter of the transistor Q1 is connected to the linear regulator 600.

It should be noted that, when the voltage value received by the collector of the transistor Q1 is greater than the set value, the transistor Q1 is triggered to be turned on, so that the entire transistor Q1 is in an amplification state, and the received voltage value can be further adjusted.

Referring to fig. 3, in some embodiments of the invention, the non-isolated offline regulator 300 is model MP 173.

It should be noted that the non-isolated offline regulator 300 is a primary regulator that provides accurate Constant Voltage (CV) regulation without a photo-coupler. It supports buck, boost, buck-boost and flyback topologies. The internal integration of 700V MOSFETs simplifies the structure and reduces cost, which makes the device an ideal choice for off-line, low power applications, such as household appliances and backup power supplies. MP173 is a green energy saving regulator. As the load decreases, both the peak current and the switching frequency decrease. The characteristic enables the chip to achieve extremely high efficiency under light load, and the overall average efficiency of the chip is effectively improved. MP173 has a variety of protection characteristics including over-temperature turn-off protection, VCC under-voltage lockout protection, overload protection, short circuit protection, and open loop protection. MP173 employs a small TSOT23-5 package and SOIC-8 package.

Referring to fig. 6, in some embodiments of the invention, linear regulator 600 is model number TPL810F 33. TPL810F33 is a linear regulator with low power consumption.

Referring to fig. 5, in some embodiments of the invention, the transistor is of the MMBT9018H type. The triode is in a MMBT9018H model and has the characteristic of stable performance.

Referring to fig. 4, in some embodiments of the invention, the fourth schottky diode D4 is model ES 2J. ES2J belongs to the fast recovery diode series, and encapsulates SMA/SMB, and its prominent feature is that the reverse recovery time is short.

Furthermore, an embodiment of the utility model also provides a circuit device, including the power voltage stabilizing circuit of above-mentioned embodiment.

While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention defined by the appended claims.

Claims

1. A power supply voltage regulator circuit, comprising:

and the linear voltage stabilizer is connected with the filtering module.

2. The power supply voltage stabilizing circuit according to claim 1, wherein the surge suppressing module comprises a first diode, a second diode, a first resistor and a fourth polar capacitor, the ac access terminal, the first diode, the second diode, the first resistor and the input terminal of the non-isolated offline regulator are sequentially connected, and the fourth polar capacitor is connected between the input terminal of the non-isolated offline regulator and a reference ground.

3. The power supply voltage stabilizing circuit according to claim 1, wherein the filtering module comprises a first inductor, a fourth schottky diode, an eighth polarity capacitor, a seventh capacitor and a sixth resistor, one end of the first inductor is connected to the output end of the non-isolated offline regulator, a cathode of the fourth schottky diode is connected to one end of the first inductor, an anode of the eighth polarity capacitor, one end of the seventh capacitor and one end of the sixth resistor are all connected to the other end of the first inductor, and an anode of the fourth schottky diode, a cathode of the eighth polarity capacitor, the other end of the seventh capacitor and the other end of the sixth resistor are all connected to a reference ground.

4. The power supply voltage regulation circuit of claim 1 further comprising a regulation module coupled between the filtering module and the linear regulator.

5. The power supply voltage stabilizing circuit of claim 4, wherein the regulating module comprises a triode, a fifth resistor, a tenth capacitor and a ninth polarity capacitor, wherein a negative electrode of the ninth polarity capacitor and one end of the tenth capacitor are both connected with a reference ground, a positive electrode of the ninth polarity capacitor and the other end of the tenth capacitor are both connected with a base electrode of the triode, the fifth resistor is connected between the base electrode and a collector electrode of the triode, and an emitter electrode of the triode is connected with the linear regulator.

6. The power supply voltage regulator circuit of claim 1, wherein the non-isolated offline regulator is of the type MP 173.

7. The power supply voltage regulation circuit of claim 1 wherein the linear regulator is of the type TPL810F 33.

8. The power supply voltage regulation circuit of claim 5 wherein the triode is of the type MMBT 9018H.

9. The power supply voltage regulation circuit of claim 3 wherein the fourth Schottky diode has a model number ES 2J.

10. A circuit arrangement comprising a power supply voltage regulator circuit as claimed in any one of claims 1 to 9.