Multi-parallel-connection circuit

Abstract

The invention belongs to the technical field of circuits, and discloses a multi-parallel circuit, which comprises a plurality of PS-ON circuits, each PS-ON circuit comprises a port SMCU, the port SMCU is connected with a collector of an optical coupler OT1, an emitter of the optical coupler OT1 is connected with a port PS-ON and one end of a resistor R3, the other end of the resistor R3 is connected with a port AGND, a positive end of the optical coupler OT1 is connected with a port VPS-ON and one end of a capacitor C1, and a negative end of the optical coupler OT1 is connected with the other end of the capacitor C1. The negative end of the optocoupler OT1 is connected with one end of the resistor R2, the other end of the resistor R2 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with the port PEST, the other end of the capacitor C1 is connected with the port GND and the port RETUN, the ports PEST of the PS-ON circuits are mutually connected, and the ports RETUN of the PS-ON circuits are mutually connected. The parallel operation device has the advantages of being simple in structure, stable in operation and capable of effectively solving the parallel operation problem.

Description

Technical Field

[0001] The present invention relates to the field of circuit technology, and in particular to a multi-parallel circuit. Background Art

[0002] In the communication power supply industry, N modules are used in parallel in actual use environments, and the switches of N modules need to be controlled at the same time. At this time, a control circuit that supports multiple parallel machines is required. Some existing circuits have complex structures and high costs, and some are unstable and prone to danger.

[0003] Therefore, it is necessary to provide a multi-parallel circuit with simple structure and stable operation to effectively solve the parallel problem. Summary of the invention

[0004] The invention discloses a multi-parallel circuit, which can effectively solve the technical problems involved in the background technology.

[0005] To achieve the above object, the technical solution of the present invention is:

[0006] A multi-parallel circuit comprises a plurality of PS-ON circuits, wherein the PS-ON circuit comprises a port SMCU, wherein the port SMCU is connected to the collector of an optical coupler OT1, the emitter of the optical coupler OT1 is connected to the port PS-ON and one end of a resistor R3, the other end of the resistor R3 is connected to a port AGND, the positive end of the optical coupler OT1 is connected to a port VPS-ON and one end of a capacitor C1, the negative end of the optical coupler OT1 is connected to one end of a resistor R2, the other end of the resistor R2 is connected to one end of a resistor R1, the other end of the resistor R1 is connected to a port PEST, the other end of the capacitor C1 is connected to a port GND and a port RETUN, and the ports PEST of the plurality of PS-ON circuits are connected to one another, and the ports RETUN are connected to one another.

[0007] A multi-parallel POWER Supply-ON circuit (hereinafter referred to as PS-ON) includes multiple PS-ON circuits to solve the parallel problem. The PS-ON circuit is composed of a photocoupler (with isolation function or non-isolation function, selected according to actual needs), three chip resistors, and a chip capacitor. The parallel PS-ON circuit is composed of the above single PS-ON circuits, and the material selection is exactly the same. It involves the field of switching power supplies, especially in the server field and communication power modules. When the PSET and RETUN networks are short-circuited, the primary diode of the photocoupler emits light, the photocoupler is turned on, and the PS-ON network generates a high level, which is transmitted to the microcontroller to control the power on and off.

[0008] As a preferred improvement of the present invention: the port PEST and the port RETUN are physical ports, which are short-circuited by manual operation.

[0009] As a preferred improvement of the present invention: the port PS-ON is connected to a controller.

[0010] As a preferred improvement of the present invention: the port SMCU is connected to the power supply terminal 1, and the port VPS-ON is connected to the power supply terminal 2.

[0011] As a preferred improvement of the present invention: the PS-ON circuit further includes a diode D2, a pin 1 of the diode D2 is connected to the other end of the resistor R2, a pin 2 of the diode D2 is connected to the other end of the capacitor C1, and a pin 3 of the diode D2 is connected to the port VPS-ON.

[0012] As a preferred improvement of the present invention: the diode D2 is of model BAV99.

[0013] As a preferred improvement of the present invention: a diode D1 is provided between the resistor R1 and the port PEST, the positive end of the diode D1 is connected to the other end of the resistor R1, and the negative end of the diode D1 is connected to the port PES.

[0014] As a preferred improvement of the present invention: the number of the PS-ON circuits is 2-10.

[0015] The beneficial effects of the present invention are as follows:

[0016] The structure is simple and the operation is stable. When the PSET and RETUN networks are short-circuited, the primary diode of the photocoupler will light up, the photocoupler will be turned on, and the PS-ON network will generate a high level, which will be transmitted to the microcontroller to control the power on and off. It can be infinitely superimposed according to actual needs, effectively solving the parallel problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0018] Figure 1 A schematic diagram of a multi-parallel circuit of the present invention Figure 1 ;

[0019] Figure 2 The circuit diagram of the present invention is shown in FIG. Figure 2 ;

[0020] Figure 3 The circuit diagram of the present invention is shown in FIG. Figure 3 ;

[0021] Figure 4 for Figure 3 Circuit operation diagram;

[0022] Figure 5 The circuit diagram of the present invention is shown in FIG. Figure 4 . DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] See also Figure 1As shown, the present invention provides a multi-parallel circuit, including multiple PS-ON circuits, the PS-ON circuit includes a port SMCU, the port SMCU is connected to the collector of the optocoupler OT1, the emitter of the optocoupler OT1 is connected to the port PS-ON and one end of the resistor R3, the other end of the resistor R3 is connected to the port AGND, the positive end of the optocoupler OT1 is connected to the port VPS-ON and one end of the capacitor C1, the negative end of the optocoupler OT1 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the port PEST, the other end of the capacitor C1 is connected to the port GND and the port RETUN, the ports PEST of the multiple PS-ON circuits are connected to each other, the ports RETUN are connected to each other, the port PS-ON is connected to the controller, the port SMCU is connected to the power supply terminal 1, and the port VPS-ON is connected to the power supply terminal 2. Preferably, the number of the PS-ON circuits is 2-10. In this embodiment, the number of the PS-ON circuits is 2. When the PSET and RETUN networks are short-circuited, the primary diode of the photocoupler emits light, the photocoupler is turned on, and the PS-ON network generates a high level, which is transmitted to the microcontroller to control the power on and off. The port PEST and the port RETUN are physical ports, which are short-circuited manually. The two ports PS-ON are connected to different control mechanisms, thereby controlling different power supplies or devices to start synchronously. Figure 2 , adding a diode between resistor R1 and port PEST can make the circuit run more stable and avoid false triggering.

[0029] See also Figure 3-Figure 4 As shown, the PS-ON circuit includes a port SMCU, the port SMCU is connected to the collector of the optocoupler OT1, the emitter of the optocoupler OT1 is connected to the port PS-ON and one end of the resistor R3, the other end of the resistor R3 is connected to the port AGND, the positive end of the optocoupler OT1 is connected to the port VPS-ON and one end of the capacitor C1, the negative end of the optocoupler OT1 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the port PEST, the other end of the capacitor C1 is connected to the port GND and the port RETUN, the pin 1 of the diode D2 is connected to the other end of the resistor R2, the pin 2 of the diode D2 is connected to the other end of the capacitor C1, the pin 3 of the diode D2 is connected to the port VPS-ON, and the diode D2 model is BAV99. When two or more modules are used in parallel, taking 2 parallel machines as an example, the PS-ON circuit is as follows Figure 4 ,and Figure 3Compared with the same circuit connected in parallel, the other parts are exactly the same, the working principle has not changed, and the PSET network and RETUN short circuit work normally. However, this circuit has a disadvantage. When the two modules are not powered on at the same time, one of the modules will restart continuously. Figure 2 The left side is module 1, and the right side is module 2. When module 1 is powered on and module 2 is not powered on, its working state and current circuit are as follows Figure 4 , a diode is clamped between the PS-ON signal and the reference ground. When the PS-ON reference grounds of multiple machines are short-circuited, if a module is not powered on, the power supply voltage of the powered module will pass through the optocoupler OT1, the current limiting resistor (R2, R1) and then pass through the clamping diode to charge the VPS-ON decoupling capacitor C1 of the unpowered module, forming a path. Therefore, the optocoupler (OT1) will be misconnected, and the microcontroller can detect the PS-ON signal, causing the module to start up by mistake. When the decoupling capacitor (C1) of the VPS-ON of the unpowered module is fully charged, the loop is disconnected, and the PS-ON signal will be lost again. Repeated cycles will cause the power supply to restart repeatedly.

[0030] See also Figure 5 As shown, the PS-ON circuit includes a port SMCU, the port SMCU is connected to the collector of the optocoupler OT1, the emitter of the optocoupler OT1 is connected to the port PS-ON and one end of the resistor R3, the other end of the resistor R3 is connected to the port AGND, the positive end of the optocoupler OT1 is connected to the port VPS-ON and one end of the capacitor C1, the negative end of the optocoupler OT1 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the port PEST, the other end of the capacitor C1 is connected to the port GND and the port RETUN, the pin 1 of the diode D2 is connected to the other end of the resistor R2, the pin 2 of the diode D2 is connected to the other end of the capacitor C1, the pin 3 of the diode D2 is connected to the port VPS-ON, a diode D1 is provided between the resistor R1 and the port PEST, the positive end of the diode D1 is connected to the other end of the resistor R1, and the negative end of the diode D1 is connected to the port PES. A diode D1 is added to the PS-ON circuit of each power module. When module 1 is powered on and module 2 is not powered on, the charging current of the capacitor has no loop, and the capacitor C1 will not be repeatedly charged and discharged, thus solving the problem. It should be further explained that the use of other components to achieve the above effects should be within the inventive concept of the present invention and should be within the protection scope of the present invention.

[0031] Working principle: When the PSET and RETUN networks are short-circuited, the primary diode of the photocoupler lights up, the photocoupler is turned on, and the PS-ON network generates a high level, which is transmitted to the microcontroller to control the power on and off.

[0032] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the embodiments. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A multi-parallel circuit, characterized in that: The invention comprises a plurality of PS-ON circuits, wherein the PS-ON circuit comprises a port SMCU, wherein the port SMCU is connected to the collector of an optocoupler OT1, the emitter of the optocoupler OT1 is connected to the port PS-ON and one end of a resistor R3, the other end of the resistor R3 is connected to the port AGND, the positive end of the optocoupler OT1 is connected to the port VPS-ON and one end of a capacitor C1, the negative end of the optocoupler OT1 is connected to one end of a resistor R2, the other end of the resistor R2 is connected to one end of a resistor R1, the other end of the resistor R1 is connected to the port PEST, the other end of the capacitor C1 is connected to the port GND and the port RETUN, and the ports PEST of the plurality of PS-ON circuits are connected to each other, and the ports RETUN are connected to each other.

2. A multi-parallel circuit according to claim 1, characterized in that: The port PEST and the port RETUN are physical ports and are short-circuited by manual operation.

3. The multi-parallel circuit according to claim 1, characterized in that: The PS-ON port is connected to the controller.

4. The multi-parallel circuit according to claim 1, characterized in that: The port SMCU is connected to the power supply terminal 1, and the port VPS-ON is connected to the power supply terminal 2.

5. The multi-parallel circuit according to claim 1, characterized in that: The PS-ON circuit further includes a diode D2, a pin 1 of the diode D2 is connected to the other end of the resistor R2, a pin 2 of the diode D2 is connected to the other end of the capacitor C1, and a pin 3 of the diode D2 is connected to the port VPS-ON.

6. The multi-parallel circuit according to claim 5, characterized in that: The diode D2 is of model BAV99.

7. A multi-parallel circuit according to claim 1 or 5, characterized in that: A diode D1 is provided between the resistor R1 and the port PEST, a positive end of the diode D1 is connected to the other end of the resistor R1, and a negative end of the diode D1 is connected to the port PES.

8. The multi-parallel circuit according to claim 1, characterized in that: The number of the PS-ON circuits is 2-10.

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