CN216160989U - Starting circuit and starting device - Google Patents
Starting circuit and starting device Download PDFInfo
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- CN216160989U CN216160989U CN202122140235.9U CN202122140235U CN216160989U CN 216160989 U CN216160989 U CN 216160989U CN 202122140235 U CN202122140235 U CN 202122140235U CN 216160989 U CN216160989 U CN 216160989U
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Abstract
The application discloses starting circuit and starting device. The start-up circuit of the present application includes: the starting module is used for receiving a starting signal and outputting a starting current according to the starting signal; the control module is connected with the starting module, is used for receiving the starting current output by the starting module and is used for outputting a reference signal according to the starting current; the switch module is connected with the control module and the starting module and used for adjusting the connection state between the control module and the starting module according to the reference signal; the power supply module is connected with the starting module and the control module, and is used for receiving the starting current output by the starting module and outputting the power supply current according to the starting current. The starting circuit provided by the embodiment of the application can provide starting current for the control module, and the control module is enabled to cut off a current loop of the starting module through the switch module after working, so that power loss generated by the starting circuit is reduced.
Description
Technical Field
The present application relates to the field of starting circuits, and in particular, to a starting circuit and a starting apparatus.
Background
At present, the starting current of the controller is usually provided by a starting module, after the controller completes starting work according to the starting current, a transformer connected with the controller can continue to supply power to the controller, at the moment, the starting module can generate a large voltage difference, and if the controller continuously works, the controller can be connected between high voltage and low voltage for a long time, so that power loss is caused.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides a starting circuit and a starting device, which can cut off a current loop of a starting module after a controller completes starting operation so as to reduce power loss.
The starting circuit according to the embodiment of the first aspect of the application comprises:
the starting module is used for receiving a starting signal and outputting a starting current according to the starting signal;
the control module is connected with the starting module, is used for receiving the starting current output by the starting module and is used for outputting a reference signal according to the starting current;
the switch module is connected with the control module and the starting module and used for controlling the connection state between the control module and the starting module according to the reference signal; wherein the connection state comprises an on state or an off state;
and the power supply module is connected with the starting module and the control module, and is used for receiving the starting current output by the starting module and outputting power supply current according to the starting current, wherein the power supply current is used for supplying power to the control module when the connection state between the starting module and the control module is a disconnection state.
According to the starting circuit of the embodiment of the application, at least the following beneficial effects are achieved:
the starting circuit comprises a starting module, a control module, a switch module and a power supply module, wherein the starting module receives a starting signal and outputs a starting current according to the starting signal; the control module receives the starting current output by the starting module and outputs a reference signal according to the starting current; the switch module adjusts the connection state between the control module and the starting module according to the reference signal; the power supply module receives the starting current output by the starting module and supplies power to the control module according to the starting current when the starting module and the control module are in a disconnected state. According to the embodiment of the application, the starting circuit is designed, the starting current can be provided for the control module, the current loop of the starting module is disconnected through the switch module after the control module works, and the power loss generated by the starting circuit is reduced.
According to some embodiments of the present application, the start module comprises:
the starting interface is used for receiving the starting signal;
the first end of the first resistor is connected with the starting interface, and the second end of the first resistor is connected with the control module.
According to some embodiments of the application, the control module comprises:
the first end of the control unit is connected with the switch module;
a first end of the first capacitor is respectively connected with a first end of the control unit, a second end of the control unit and the switch module, and a second end of the first capacitor is connected with a third end of the control unit;
and the first end of the second capacitor is respectively connected with the first end of the control unit, the second end of the control unit, the switch module and the first end of the first capacitor, and the second end of the second capacitor is grounded.
According to some embodiments of the application, the switch module comprises:
a first end of the first switch unit is connected with the starting module, a second end of the first switch unit is connected with the power supply module, a third end of the first switch unit is connected with the control module, and a fourth end of the first switch unit is grounded;
and a first end of the second switch unit is connected with a fifth end of the first switch unit, a second end of the second switch unit is grounded, and a third end of the second switch unit is connected with the control module.
According to some embodiments of the present application, the first switching unit comprises:
the collector of the first triode is connected with the starting module;
a first end of the first diode is connected with an emitting electrode of the first triode, and the other end of the first diode is respectively connected with the power supply module and the control module;
the emitting electrode of the second triode is grounded, the base electrode of the second triode is connected with the second switch unit, and the collector electrode of the second triode is connected with the base electrode of the first triode;
and one end of the second resistor is respectively connected with the base electrode of the first triode and the collector electrode of the second triode, and the other end of the second resistor is respectively connected with the starting module and the collector electrode of the first triode.
According to some embodiments of the present application, the second switching unit comprises:
a first end of the third capacitor is connected with the first switch unit, and a second end of the third capacitor is grounded;
a first end of the third resistor is connected with the first switch unit and a first end of the third capacitor respectively, and a second end of the third resistor is connected with a second end of the third capacitor;
and a first end of the fourth resistor is connected with the first switch unit, the first end of the third capacitor and the first end of the third resistor respectively, and a second end of the fourth resistor is connected with the control module.
According to some embodiments of the present application, the power supply module comprises:
a second diode;
a first end of the resistance unit is connected with a first end of the second diode, and a second end of the resistance unit is respectively connected with the switch module and the control module;
a first end of the fourth capacitor is connected with the second end of the resistor unit, the switch module and the control module respectively, and a second end of the fourth capacitor is grounded;
and a first end of the transformation unit is connected with a second end of the fourth capacitor, and a second end of the transformation unit is connected with a second end of the second diode.
According to some embodiments of the present application, the resistance unit includes:
a first end of the fifth resistor is connected with the first end of the second diode, and a second end of the fifth resistor is respectively connected with the switch module, the control module and the first end of the fourth capacitor;
and a first end of the sixth resistor is connected with the first end of the second diode and the first end of the fifth resistor respectively, and a second end of the sixth resistor is connected with the switch module, the control module, the first end of the fourth capacitor and the second end of the fifth resistor respectively.
The starting device according to the second aspect of the present application includes the starting circuit according to the first aspect of the present application.
According to the starting device of the embodiment of the application, at least the following beneficial effects are achieved: by adopting the starting circuit, the starting current can be provided for the control module, and after the control module works, the current loop of the starting module is disconnected through the switch module, so that the power loss generated by the starting circuit is reduced.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The present application is further described with reference to the following figures and examples, in which:
fig. 1 is a circuit diagram of a start-up circuit in the related art;
FIG. 2 is a block diagram of a start-up circuit according to an embodiment of the present application;
fig. 3 is a circuit diagram of a start-up circuit according to an embodiment of the present application.
Reference numerals:
the starting module 110, the control module 120, the control unit 121, the switch module 130, the first switch unit 131, the second switch unit 132, the power supply module 140, the resistance unit 141, and the voltage transformation unit 142.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.
In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present number, and the above, below, within, etc. are understood as including the present 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 application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.
In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the conventional starting circuit, as shown in fig. 1, a network reference number HV + is a high-voltage direct current generated by rectifying a commercial power, and the high-voltage direct current provides a starting current for a controller U1 through a resistor R1. When the controller U1 is operating normally, the transformer T1T 1 generates a low voltage self-powered VCC to continue to supply the normal power requirements to the controller U1. After the controller U1 completes the start-up operation, a large voltage difference is generated across the resistor R1, which may cause the controller U1 to be connected between high and low voltages for a long time and cause power loss if the controller U1 continues to operate.
Based on this, this application proposes a starting circuit and starting device, can be after the controller finishes the start work, the return circuit of disconnection starting current to reduce power loss.
As shown in fig. 2, the starting circuit according to the embodiment of the present application includes a starting module 110, a control module 120, a switching module 130, and a power supply module 140, wherein the starting module 110 receives a starting signal and outputs a starting current according to the starting signal; the control module 120 receives the starting current output by the starting module 110 and outputs a reference signal according to the starting current, wherein the reference signal comprises a reference voltage, a reference current and the like; the switch module 130 adjusts the connection state between the control module 120 and the start module 110 according to the reference signal; the power supply module 140 receives the start current output by the start module 110 and supplies power to the control module 120 according to the start current when the start module 110 and the control module 120 are in the off state. According to the embodiment of the application, by designing the starting circuit, after the control module 120 works, the current loop of the starting module 110 is disconnected through the switch module 130, so that power loss generated by the starting circuit is reduced.
In some embodiments of the present application, as shown in fig. 3, the start module 110 includes: the starting circuit comprises a starting interface and a first resistor R1, wherein the starting interface is used for receiving a starting signal, the starting signal is a signal for controlling the starting interface to output a starting current, a first end of the first resistor R1 is connected with the starting interface, and a second end of the first resistor R1 is connected with the control module 120. In practical applications, the start interface of the start module 110 may be connected to an external power source, such as a commercial power, and after the start module 110 is connected to the commercial power, a start current, such as a high voltage direct current HV +, may be generated, and if the switch module 130 is in an on state, the high voltage direct current HV + may reach the control module 120 through the switch module 130, so as to provide the start current for the control module 120, and enable the control module 120 to enter a normal operating state.
In some embodiments of the present application, as shown in fig. 2 and 3, the control module 120 includes: the circuit comprises a control unit 121, a first capacitor C1 and a second capacitor C2, wherein a first end of the control unit 121 is connected with a switch module 130, a first end of a first capacitor C1 is respectively connected with the first end of the control unit 121, a second end of the control unit 121 and the switch module 130, a second end of a first capacitor C1 is connected with a third end of the control unit 121, wherein the second end of the control unit 121 is used for outputting a reference signal comprising a reference current, a reference voltage and the like; a first end of the second capacitor C2 is connected to the first end of the control unit 121, the second end of the control unit 121, the switch module 130, and the first end of the first capacitor C1, respectively, and a second end of the second capacitor C2 is grounded. In practical applications, the control unit 121 is a controller U1 having a plurality of pins, for example, 8 pins, wherein 7 pins of the controller U1 are used for receiving the start current output by the start module 110 to start the controller U1, after the controller U1 normally operates, a reference signal, for example, a reference voltage VREF, is generated at 8 pins of the controller U1 for reference comparison with other control circuits, and the switch module 130 is further capable of adjusting a connection state between the control module 120 and the start module 110 according to the reference voltage VREF output by the controller U1. It should be understood that, the above-mentioned connection relationship between the pins of the controller U1 according to the embodiment of the present application is only an exemplary illustration, and is not a specific limitation of the present application, and a person skilled in the art may adjust the connection relationship between the pins of the controller U1 according to actual needs, and details thereof are not described herein again.
In some embodiments of the present application, as shown in fig. 2 and 3, the switch module 130 includes: a first switch unit 131 and a second switch unit 132, wherein a first end of the first switch unit 131 is connected to the starting module 110, a second end of the first switch unit 131 is connected to the power supply module 140, a third end of the first switch unit 131 is connected to the control module 120, and a fourth end of the first switch unit 131 is grounded; before the control module 120 of the start-up circuit is started, the start-up current flows into the first switch unit 131 through the start-up module 110 and is output to the control module 120 through the first switch unit 131, so as to provide the start-up current for the control module 120, and the control module 120 starts to operate according to the start-up current. A first end of the second switch unit 132 is connected to a fifth end of the first switch unit 131, a second end of the second switch unit 132 is grounded, and a third end of the second switch unit 132 is connected to the control module 120; after the control module 120 of the start-up circuit normally operates, the reference voltage VREF output by the control module 120 turns off the start-up current through the second switching unit 132 to reduce loss.
In some embodiments of the present application, as shown in fig. 2 and 3, the first switching unit 131 includes: the starting circuit comprises a first triode Q1, a first diode D1, a second triode Q2 and a second resistor R2, wherein the collector of the first triode Q1 is connected with the starting module 110; a first end of the first diode D1 is connected with an emitter of the first triode Q1, and the other end of the first diode D1 is connected with the power supply module 140 and the control module 120 respectively; an emitter of the second triode Q2 is grounded, a base of the second triode Q2 is connected with the second switching unit 132, and a collector of the second triode Q2 is connected with a base of the first triode Q1; one end of the second resistor R2 is connected to the base of the first transistor Q1 and the collector of the second transistor Q2, respectively, and the other end of the second resistor R2 is connected to the starting module 110 and the collector of the first transistor Q1, respectively, before the control module 120 of the starting circuit is started, the starting current reaches the collector of the first transistor Q1 through the starting module 110, and the starting current simultaneously provides the base current to the first transistor Q1 through the second resistor R2, so that the first transistor Q1 is turned on, and then the starting current passes through the first diode D1 from the emitter of the first transistor Q1 and is output to the control module 120, so as to provide the starting current for the control module 120, and the control module 120 starts to operate according to the starting current.
In some embodiments of the present application, as shown in fig. 2 and 3, the second switching unit 132 includes: a third capacitor C3, a third resistor R3 and a fourth resistor R4, wherein a first terminal of the third capacitor C3 is connected to the first switch unit 131, and a second terminal of the third capacitor C3 is grounded; a first end of the third resistor R3 is connected to the first switch unit 131 and a first end of the third capacitor C3, respectively, and a second end of the third resistor R3 is connected to a second end of the third capacitor C3; the first end of the fourth resistor R4 is connected to the first switch unit 131, the first end of the third capacitor C3, and the first end of the third resistor R3, respectively, the second end of the fourth resistor R4 is connected to the control module 120, after the control module 120 of the starting circuit normally operates, the control module 120 outputs a reference signal, such as a reference voltage VREF, the reference voltage VREF is output to the base of the second transistor Q2 in the first switch unit 131 through the fourth resistor R4, so that the second transistor Q2 is turned on, after the second transistor Q2 is turned on, the base current of the first transistor Q1 is pulled low, at this time, the first transistor Q1 does not operate, so that the current loop of the first resistor R1 is disconnected, and thus the current loop of the starting module 110 is disconnected through the switch module 130, and thus the power loss generated by the starting circuit is reduced.
In some embodiments of the present application, as shown in fig. 2 and 3, the power supply module 140 includes: a second diode D2, a resistor unit 141, a fourth capacitor C4, and a transformer unit 142, wherein a first end of the resistor unit 141 is connected to a first end of a second diode D2, and a second end of the resistor unit 141 is connected to the switch module 130 and the control module 120, respectively; a first end of the fourth capacitor C4 is connected to the second end of the resistor unit 141, the switch module 130 and the control module 120, respectively, and a second end of the fourth capacitor C4 is grounded; a first end of the transforming unit 142 is connected to a second end of the fourth capacitor C4, and a second end of the transforming unit 142 is connected to a second end of the second diode D2, where it should be noted that the transforming unit 142 may be specifically a transformer T1; after the control module 120 of the start-up circuit normally operates, the transformer T1 generates a self-powered VCC with a low voltage, so that the power supply module 140 can continue to provide the normal power supply requirement for the control module 120 when the switch module 130 disconnects the connection between the start-up module 110 and the control module 120.
In some embodiments of the present application, as shown in fig. 2 and fig. 3, the resistor unit 141 includes at least two resistors, for example, the resistor unit 141 includes a fifth resistor R5 and a sixth resistor R6, wherein the fifth resistor R5 and the sixth resistor R6 are in a parallel relationship, and the specific connection relationship of the resistor unit 141 is: a first end of the fifth resistor R5 is connected to a first end of the second diode D2, and a second end of the fifth resistor R5 is connected to the first ends of the switch module 130, the control module 120 and the fourth capacitor C4, respectively; a first end of the sixth resistor R6 is connected to a first end of the second diode D2 and a first end of the fifth resistor R5, respectively, and a second end of the sixth resistor R6 is connected to a first end of the switch module 130, the control module 120, the fourth capacitor C4, and a second end of the fifth resistor R5, respectively; the embodiment of the application can play a role in adapting and shunting the resistance value by designing the resistance unit 141 of the parallel resistor.
In some embodiments of the present application, as shown in fig. 2 and 3, to illustrate the operation principle of the start-up circuit of the embodiment of the present application, the start-up module 110 is connected to the mains through the start-up interface, and the high voltage dc HV + is generated after the mains is connected, and the high voltage dc HV + reaches the collector of the first transistor Q1 through the first resistor R1, and the high voltage dc HV + simultaneously provides the base current to the first transistor Q1 through the second resistor R2, so that the first transistor Q1 is turned on, and the high voltage dc HV + passes through the first diode D1 from the emitter of the first transistor Q1 and is output to the 7 pin of the controller U1, so as to provide the start-up current for the controller U1, so that the controller U1 starts to operate according to the start-up current, and after the controller U1 normally operates, the 8 pin of the controller U1 generates a reference voltage VREF, which is convenient for other control circuits to compare the reference voltage VREF, this reference voltage VREF passes through the base that fourth resistance R4 exported to second triode Q2 for second triode Q2 switches on, second triode Q2 can draw first triode Q1's base current low after switching on, first triode Q1 is out of work this moment, thereby make first resistance R1's current loop be broken off, just also realize the current loop through switch module 130 disconnection start module 110, thereby reduce the power loss that the starting circuit produced.
The embodiment of the present application further provides a starting apparatus, by using the starting circuit, the starting apparatus can provide a starting current for the control module 120, and after the control module 120 works, the current loop of the starting module 110 is disconnected through the switch module 130, so that power loss generated by the starting circuit is reduced.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Claims (9)
1. A start-up circuit, comprising:
the starting module is used for receiving a starting signal and outputting a starting current according to the starting signal;
the control module is connected with the starting module, is used for receiving the starting current output by the starting module and is used for outputting a reference signal according to the starting current;
the switch module is connected with the control module and the starting module and used for controlling the connection state between the control module and the starting module according to the reference signal; wherein the connection state comprises an on state or an off state;
and the power supply module is connected with the starting module and the control module, and is used for receiving the starting current output by the starting module and outputting power supply current according to the starting current, wherein the power supply current is used for supplying power to the control module when the connection state between the starting module and the control module is a disconnection state.
2. The startup circuit of claim 1, wherein the startup module comprises:
the starting interface is used for receiving the starting signal;
the first end of the first resistor is connected with the starting interface, and the second end of the first resistor is connected with the control module.
3. The startup circuit of claim 1, wherein the control module comprises:
the first end of the control unit is connected with the switch module;
a first end of the first capacitor is respectively connected with a first end of the control unit, a second end of the control unit and the switch module, and a second end of the first capacitor is connected with a third end of the control unit;
and the first end of the second capacitor is respectively connected with the first end of the control unit, the second end of the control unit, the switch module and the first end of the first capacitor, and the second end of the second capacitor is grounded.
4. A starting circuit according to any one of claims 1 to 3, wherein the switching module comprises:
a first end of the first switch unit is connected with the starting module, a second end of the first switch unit is connected with the power supply module, a third end of the first switch unit is connected with the control module, and a fourth end of the first switch unit is grounded;
and a first end of the second switch unit is connected with a fifth end of the first switch unit, a second end of the second switch unit is grounded, and a third end of the second switch unit is connected with the control module.
5. The start-up circuit of claim 4, wherein the first switching unit comprises:
the collector of the first triode is connected with the starting module;
a first end of the first diode is connected with an emitting electrode of the first triode, and the other end of the first diode is respectively connected with the power supply module and the control module;
the emitting electrode of the second triode is grounded, the base electrode of the second triode is connected with the second switch unit, and the collector electrode of the second triode is connected with the base electrode of the first triode;
and one end of the second resistor is respectively connected with the base electrode of the first triode and the collector electrode of the second triode, and the other end of the second resistor is respectively connected with the starting module and the collector electrode of the first triode.
6. The start-up circuit of claim 4, wherein the second switching unit comprises:
a first end of the third capacitor is connected with the first switch unit, and a second end of the third capacitor is grounded;
a first end of the third resistor is connected with the first switch unit and a first end of the third capacitor respectively, and a second end of the third resistor is connected with a second end of the third capacitor;
and a first end of the fourth resistor is connected with the first switch unit, the first end of the third capacitor and the first end of the third resistor respectively, and a second end of the fourth resistor is connected with the control module.
7. A start-up circuit according to any of claims 1 to 3, characterized in that the power supply module comprises:
a second diode;
a first end of the resistance unit is connected with a first end of the second diode, and a second end of the resistance unit is respectively connected with the switch module and the control module;
a first end of the fourth capacitor is connected with the second end of the resistor unit, the switch module and the control module respectively, and a second end of the fourth capacitor is grounded;
and a first end of the transformation unit is connected with a second end of the fourth capacitor, and a second end of the transformation unit is connected with a second end of the second diode.
8. The startup circuit of claim 7, wherein the resistance unit comprises:
a first end of the fifth resistor is connected with the first end of the second diode, and a second end of the fifth resistor is respectively connected with the switch module, the control module and the first end of the fourth capacitor;
and a first end of the sixth resistor is connected with the first end of the second diode and the first end of the fifth resistor respectively, and a second end of the sixth resistor is connected with the switch module, the control module, the first end of the fourth capacitor and the second end of the fifth resistor respectively.
9. A starting device, characterized in that it comprises a starting circuit according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122140235.9U CN216160989U (en) | 2021-09-02 | 2021-09-02 | Starting circuit and starting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122140235.9U CN216160989U (en) | 2021-09-02 | 2021-09-02 | Starting circuit and starting device |
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| CN216160989U true CN216160989U (en) | 2022-04-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116488629A (en) * | 2023-06-16 | 2023-07-25 | 上海芯龙半导体技术股份有限公司 | Startup and shutdown module |
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2021
- 2021-09-02 CN CN202122140235.9U patent/CN216160989U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116488629A (en) * | 2023-06-16 | 2023-07-25 | 上海芯龙半导体技术股份有限公司 | Startup and shutdown module |
| CN116488629B (en) * | 2023-06-16 | 2023-09-01 | 上海芯龙半导体技术股份有限公司 | Startup and shutdown module |
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| GR01 | Patent grant |