Solid-state power controller driving circuit based on reference source circuit and control method

Abstract

The invention belongs to the MOSFET (metal-oxide-semiconductor field effect transistor) driving control technology, particularly relates to a solid-state power controller driving circuit based on a reference source circuit and a control method, and can be applied to the field of power distribution system power control. The solid state power controller driving circuit comprises a main control processor circuit, a reference source circuit, a follower circuit, an MOSFET driving circuit, an MOSFET circuit and an MOSFET parameter acquisition circuit, an output end main control I / O of the main control processor circuit is connected with an input end of the MOSFET driving circuit, and an input end MOSFET state acquisition I / O of the main control processor circuit is connected with an output end of the MOSFET parameter acquisition circuit; the output end of the reference source circuit is connected with the input end of the follower circuit; the output end of the follower circuit is respectively connected with the ground of the MOSFET driving circuit and the input end of the MOSFET parameter acquisition circuit; the input end of the MOSFET parameter acquisition circuit is connected with the output end of the MOSFET circuit; and the output end of the MOSFET driving circuit is connected with the input end of the MOSFET circuit.

Description

Technical Field

[0001] This invention pertains to MOSFET drive control technology, specifically relating to a solid-state power controller drive circuit and control method based on a reference source circuit, which can be applied to the field of power control in power distribution systems. Background Technology

[0002] MOSFETs are semiconductor devices widely used in various electronic design fields such as power amplification, device driving, communication, and circuit switching due to their advantages including high-speed switching, low-voltage control, low power consumption, and arc-free switching. In power distribution, MOSFETs are often used as power switches to control the power supply of distribution channels. Currently, with increasingly stringent safety and reliability requirements for power MOSFET control in environments such as civil aircraft, conventional MOSFET control technologies can no longer meet the requirements for turn-off speed and reliability. This necessitates a new design to implement an AC solid-state controller that integrates MOSFET parameter acquisition and control technology to meet safety and reliability requirements. Summary of the Invention

[0003] Purpose of the invention: To provide a solid-state power controller drive circuit and control method based on a reference source circuit, so as to realize the acquisition and control of MOSFET parameter states.

[0004] Technical solution: A solid-state power controller drive circuit based on a reference source circuit includes: a main control processor circuit, a reference source circuit, a follower circuit, a MOSFET drive circuit, a MOSFET circuit, and a MOSFET parameter acquisition circuit, wherein: The output terminal of the main control processor circuit, the main control I / O, is connected to the input terminal of the MOSFET drive circuit, and the input terminal of the main control processor circuit, the MOSFET status acquisition I / O, is connected to the output terminal of the MOSFET parameter acquisition circuit. The output of the reference source circuit is connected to the input of the follower circuit; The output of the follower circuit is connected to the ground of the MOSFET drive circuit and the input of the MOSFET parameter acquisition circuit, respectively. The input terminal of the MOSFET parameter acquisition circuit is connected to the output terminal of the MOSFET circuit; The output terminal of the MOSFET drive circuit is connected to the input terminal of the MOSFET circuit.

[0005] Furthermore, the reference source circuit includes capacitor C1, capacitor C2, and reference source chip U1, wherein: The input terminal of the reference source chip U1 is connected to the 3.3V control circuit, the ground pin of the reference source chip U1 is connected to the 3.3V GND, and the output terminal of the reference source chip U1 is the 1.5V reference output pin. One end of capacitor C1 is connected to the 3.3V control circuit along with the input terminal of the reference source chip U1, and the other end of capacitor C1 is connected to the ground pin of the reference source chip U1 and the 3.3V GND. One end of capacitor C2 is connected to the 3.3V GND, and the other end of capacitor C2 is connected to the output terminal of the reference source chip U1.

[0006] Furthermore, the follower circuit includes capacitors C3, C4, C5, C6, and C7, resistors R1 and R2, and operational amplifier chip M1, wherein: One end of capacitor C3 is connected to the 3.3V control voltage and the power supply pin of the operational amplifier chip, while the other end of capacitor C3 is connected to 3.3V GND. One end of capacitor C4 is connected to the inverting input terminal of the operational amplifier chip and one end of resistor R1, while the other end of capacitor C4 is connected to the output terminal of the operational amplifier chip and one end of resistor R2. The other end of resistor R1 and the other end of resistor R2 are simultaneously connected to one end of capacitors C5, C6, and C7. The other ends of capacitors C5, C6, and C7 are connected to 3.3V GND.

[0007] Furthermore, capacitors C1 to C7 in the drive circuit are all filter capacitors.

[0008] A control method for a solid-state power controller drive circuit, characterized in that it includes: The reference source circuit provides a stable power signal to the follower circuit and outputs the power signal to the MOSFET drive circuit and the MOSFET parameter acquisition circuit. The main control processor circuit sends a drive signal to the MOSFET drive circuit. After processing, the drive circuit sends an on command to the MOSFET circuit. The MOSFET circuit sends MOSFET parameter signals to the MOSFET parameter acquisition circuit. After signal processing, the MOSFET parameter signals send MOSFET status signals to the main control processor circuit.

[0009] Furthermore, the reference source voltage is boosted by the electrical signal, and the main control processor circuit acquires and processes the drive state of the controlled MOSFET V1.

[0010] Furthermore, the reference source circuit provides a stable 1.5V power supply signal.

[0011] Furthermore, the reference source circuit provides a stable voltage signal to align the ground voltage of the driver chip in the MOSFET driver circuit with the voltage at the source (S) terminal of the MOSFET, thereby controlling the MOSFET's turn-on and turn-off. It also raises the input of the MOSFET parameter acquisition circuit, facilitating subsequent signal processing by the acquisition circuit.

[0012] Beneficial effects: The solid-state power controller control method based on a reference source circuit of the present invention is applied in the field of MOSFET control. By using a reference source circuit, a follower circuit, a drive circuit composed of discrete components such as resistors, capacitors, and integrated chips, and a MOSFET control method for acquiring MOSFET parameters, the control of an AC solid-state controller is realized. It has the advantages of low cost, high control reliability, and rapid control. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. 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 effort.

[0014] Figure 1 This is a functional block diagram of a solid-state power controller drive circuit based on a reference source circuit. Figure 2 This is a hardware schematic of a solid-state power controller drive circuit based on a reference source circuit. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] The features and illustrative embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific setups and methods set forth below, but covers any improvements, substitutions, and modifications to structures, methods, and devices without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description to avoid unnecessarily obscuring the invention.

[0017] In the description of this invention, it should be noted that the directions or positional relationships indicated by terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing and simplifying the invention, and should not be construed as limiting the invention. Furthermore, the use of ordinal numbers (e.g., "first and second," etc.) is for distinguishing objects and is not limited to this order, and should not be construed as indicating or implying relative importance.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly, encompassing both direct connection and indirect connection via an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0019] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other, and the various embodiments can be referenced and cited in each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0021] Currently, the control of MOSFETs in AC power distribution channels is often achieved using absolute value circuits in the MOSFET parameter acquisition circuit. Precision rectifier circuits based on operational amplifiers typically consist of one or more operational amplifiers combined with diodes, which can easily cause signal distortion and reduce product reliability. This paper designs a solid-state power controller drive circuit based on a reference source circuit. This circuit can effectively acquire AC power distribution channel parameters according to design requirements, preserving the validity and authenticity of the initial voltage signal. Furthermore, this circuit involves only one reference source chip and one operational amplifier circuit, effectively avoiding the failures that can occur when multiple operational amplifiers are used simultaneously, thus improving the reliability of MOSFET drive control.

[0022] This invention relates to a solid-state power controller drive circuit based on a reference source circuit, comprising a main control processor circuit, a reference source circuit, a follower circuit, a drive circuit, a MOSFET circuit, and a MOSFET parameter acquisition circuit. The output terminal (main control I / O) of the main control processor circuit is connected to the input terminal of the MOSFET drive circuit, and the input terminal (MOSFET state acquisition I / O) of the main control processor circuit is connected to the output terminal of the MOSFET parameter acquisition circuit. The output terminal of the reference source circuit is connected to the input terminal of the follower circuit, the output terminal of the follower circuit is connected to ground of the MOSFET drive circuit, and another output terminal of the follower circuit is connected to the input terminal of the MOSFET parameter acquisition circuit. The input terminal of the MOSFET parameter acquisition circuit is connected to the output terminal of the MOSFET circuit, and the output terminal of the MOSFET drive circuit is connected to the input terminal of the MOSFET circuit.

[0023] Furthermore, the reference source circuit includes capacitor C1, capacitor C2, and reference source chip U1, wherein: The input terminal of the reference source chip U1 is connected to the 3.3V control circuit, the ground pin of the reference source chip U1 is connected to the 3.3V GND, and the output terminal of the reference source chip U1 is the 1.5V reference output pin. One end of capacitor C1 is connected to the 3.3V control circuit along with the input terminal of the reference source chip U1, and the other end of capacitor C1 is connected to the ground pin of the reference source chip U1 and the 3.3V GND. One end of capacitor C2 is connected to the 3.3V GND, and the other end of capacitor C2 is connected to the output terminal of the reference source chip U1.

[0024] Furthermore, the follower circuit includes capacitors C3, C4, C5, C6, and C7, resistors R1 and R2, and operational amplifier chip M1, wherein: One end of capacitor C3 is connected to the 3.3V control voltage and the power supply pin of the operational amplifier chip, while the other end of capacitor C3 is connected to 3.3V GND. One end of capacitor C4 is connected to the inverting input terminal of the operational amplifier chip and one end of resistor R1, while the other end of capacitor C4 is connected to the output terminal of the operational amplifier chip and one end of resistor R2. The other end of resistor R1 and the other end of resistor R2 are simultaneously connected to one end of capacitors C5, C6, and C7. The other ends of capacitors C5, C6, and C7 are connected to 3.3V GND.

[0025] Furthermore, capacitors C1 to C7 in the drive circuit are all filter capacitors.

[0026] A control method for a solid-state power controller drive circuit is also provided, including: The reference source circuit provides a stable power signal to the follower circuit and outputs the power signal to the MOSFET drive circuit and the MOSFET parameter acquisition circuit. The main control processor circuit sends a drive signal to the MOSFET drive circuit. After processing, the drive circuit sends an on command to the MOSFET circuit. The MOSFET circuit sends MOSFET parameter signals to the MOSFET parameter acquisition circuit. After signal processing, the MOSFET parameter signals send MOSFET status signals to the main control processor circuit.

[0027] Furthermore, the reference source voltage is boosted by the electrical signal, and the main control processor circuit acquires and processes the drive state of the controlled MOSFET V1.

[0028] Furthermore, the reference source circuit provides a stable 1.5V power supply signal.

[0029] Furthermore, the reference source circuit provides a stable voltage signal to align the ground voltage of the driver chip in the MOSFET driver circuit with the voltage at the source (S) terminal of the MOSFET, thereby controlling the MOSFET's turn-on and turn-off. It also raises the input of the MOSFET parameter acquisition circuit, facilitating subsequent signal processing by the acquisition circuit.

[0030] Example 1 like Figure 2As shown, a solid-state power controller drive circuit based on a reference source circuit includes a main control processor circuit, a reference source circuit, a follower circuit, a drive circuit, a MOSFET circuit, and a MOSFET parameter acquisition circuit. The output terminal (main control I / O) of the main control processor circuit is connected to the input terminal of the MOSFET drive circuit, and the input terminal (MOSFET status acquisition I / O) of the main control processor circuit is connected to the output terminal of the MOSFET parameter acquisition circuit. The output terminal of the reference source circuit is connected to the input terminal of the follower circuit, the output terminal of the follower circuit is connected to ground of the MOSFET drive circuit, and the other output terminal of the follower circuit is connected to the input terminal of the MOSFET parameter acquisition circuit. The input terminal of the MOSFET parameter acquisition circuit is connected to the output terminal of the MOSFET circuit, and the output terminal of the MOSFET drive circuit is connected to the input terminal of the MOSFET circuit.

[0031] The solid-state power controller drive circuit based on the reference source circuit is characterized in that the controller drive circuit has the function of providing a stable voltage source signal. It can output a 1.5V voltage signal through the reference source chip and regulate and filter it through the follower circuit to provide a stable 1.5V reference source for the drive chip and MOSFET parameter acquisition circuit.

[0032] The solid-state power controller drive circuit based on the reference source circuit is characterized in that the output terminal of the follower circuit includes three capacitors, which are connected in parallel and grounded to achieve a stable 1.5V voltage through capacitor filtering.

[0033] A solid-state power controller drive circuit and control method for a reference source circuit, the specific circuit operation process of which is as follows: Step 1: In the reference source circuit, the reference source chip outputs a 1.5V voltage signal after being powered by 3.3V and outputs the voltage signal to the follower circuit.

[0034] Step 2: After the operational amplifier chip and RC network in the follower circuit receive the 1.5V voltage signal from the reference source circuit and perform voltage regulation, the signal is output to the near-ground terminal of the sampling resistor in the MOSFET circuit and the ground terminal of the driver chip.

[0035] Step 3: After the main control processor sends a MOSFET turn-off command to the driver chip, the driver chip processes the signal and outputs a drive signal to turn off the MOSFET. At the instant the MOSFET turns off, the instantaneous electromotive force of the MOSFET is discharged to the ground terminal of the driver chip through the near-ground terminal of the sampling resistor, completing the rapid discharge.

[0036] Step 4: After the main control processor sends a MOSFET turn-on command to the driver chip, the driver chip processes the signal and outputs a drive signal to turn on the MOSFET. The MOSFET circuit provides power load parameters to the MOSFET parameter acquisition circuit. The 1.5V reference source amplifies the acquired AC signal. After processing by the MOSFET acquisition circuit, the voltage parameter signal is input to the MOSFET status acquisition I / O of the main control processing circuit to realize real-time acquisition of the MOSFET status.

[0037] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A solid-state power controller drive circuit based on a reference source circuit, characterized in that, include: The circuit consists of a main control processor circuit, a reference source circuit, a follower circuit, a MOSFET driver circuit, a MOSFET circuit, and a MOSFET parameter acquisition circuit, among which: The output terminal of the main control processor circuit, the main control I / O, is connected to the input terminal of the MOSFET drive circuit, and the input terminal of the main control processor circuit, the MOSFET status acquisition I / O, is connected to the output terminal of the MOSFET parameter acquisition circuit. The output of the reference source circuit is connected to the input of the follower circuit; The output of the follower circuit is connected to the ground of the MOSFET drive circuit and the input of the MOSFET parameter acquisition circuit, respectively. The input terminal of the MOSFET parameter acquisition circuit is connected to the output terminal of the MOSFET circuit; The output terminal of the MOSFET drive circuit is connected to the input terminal of the MOSFET circuit.

2. The solid-state power controller drive circuit according to claim 1, characterized in that, The reference source circuit includes capacitor C1, capacitor C2, and reference source chip U1, wherein: The input terminal of the reference source chip U1 is connected to the 3.3V control circuit, the ground pin of the reference source chip U1 is connected to the 3.3V GND, and the output terminal of the reference source chip U1 is the 1.5V reference output pin. One end of capacitor C1 is connected to the 3.3V control circuit along with the input terminal of the reference source chip U1, and the other end of capacitor C1 is connected to the ground pin of the reference source chip U1 and the 3.3V GND. One end of capacitor C2 is connected to the 3.3V GND, and the other end of capacitor C2 is connected to the output terminal of the reference source chip U1.

3. The solid-state power controller drive circuit according to claim 1, characterized in that, The follower circuit includes capacitors C3, C4, C5, C6, and C7, resistors R1 and R2, and operational amplifier chip M1, wherein: One end of capacitor C3 is connected to the 3.3V control voltage and the power supply pin of the operational amplifier chip, while the other end of capacitor C3 is connected to the 3.3V GND. One end of capacitor C4 is connected to the inverting input terminal of the operational amplifier chip and one end of resistor R1, while the other end of capacitor C4 is connected to the output terminal of the operational amplifier chip and one end of resistor R2. The other end of resistor R1 and the other end of resistor R2 are simultaneously connected to one end of capacitors C5, C6, and C7. The other ends of capacitors C5, C6, and C7 are connected to 3.3V GND.

4. The solid-state power controller drive circuit according to claim 1, characterized in that, The capacitors C1 to C7 in the drive circuit are all filter capacitors.

5. A control method for a solid-state power controller drive circuit, characterized in that, include: The reference source circuit provides a stable power signal to the follower circuit and outputs the power signal to the MOSFET drive circuit and the MOSFET parameter acquisition circuit. The main control processor circuit sends a drive signal to the MOSFET drive circuit. After processing, the drive circuit sends an on command to the MOSFET circuit. The MOSFET circuit sends MOSFET parameter signals to the MOSFET parameter acquisition circuit. After signal processing, the MOSFET parameter signals send MOSFET status signals to the main control processor circuit.

6. The control method according to claim 5, characterized in that, The reference source voltage amplifies the electrical signal, and the main control processor circuit acquires and processes the drive state of the controlled MOSFET V1.

7. The control method according to claim 5, characterized in that, The reference source circuit provides a stable 1.5V power supply signal.

8. The control method according to claim 5, characterized in that, The reference source circuit provides a stable voltage signal, aligning the ground voltage of the driver chip in the MOSFET driver circuit with the voltage at the source (S) terminal of the MOSFET, controlling the MOSFET's turn-on and turn-off, and boosting the input of the MOSFET parameter acquisition circuit to facilitate subsequent signal processing by the acquisition circuit.

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