CN213846573U - Step driver control motor band-type brake driving circuit - Google Patents

Abstract

The utility model relates to a step driver control motor band-type brake drive circuit, including MCU circuit, triode drive circuit, opto-coupler isolation circuit and motor band-type brake drive circuit, wherein, the MCU circuit adopts XMC4300 control chip U1A; the triode driving circuit comprises a triode Q1 and resistors R1-R3; the optical coupling isolation circuit comprises an EL3H7 optical coupling isolation chip U1; the band-type brake driving circuit comprises an IRF7341 power chip M1, a capacitor C1, a diode D1 and resistors R5-R6, wherein 2 paths of MOSFETs which are arranged in parallel are integrated in the IRF7341 power chip M1. The stepping driver control motor band-type brake driving circuit can realize direct control of the motor band-type brake through an internal circuit of the driver, and can avoid the problems of external relay increase and complex wiring; meanwhile, the band-type brake driving circuit is adopted, 2 paths of MOSFETs are connected in parallel, the driving circuit can pass larger current, and the IRF7341 power chip M1 is a low internal resistance MOSFET, so that the heating is smaller in work, and the stability of the circuit can be effectively ensured.

Description

Step driver control motor band-type brake driving circuit

Technical Field

The utility model relates to a motor drive circuit technical field especially relates to a step driver control motor band-type brake drive circuit.

Background

The step driver control motor band-type brake on the existing market generally needs external relay to control, can occupation space in some micro equipment, and the wiring is more moreover, has increased the fault point.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a step driver control motor band-type brake drive circuit who need not external relay.

For realizing the purpose of the utility model, the utility model adopts the following technical scheme:

a stepping driver control motor band-type brake driving circuit comprises an MCU circuit, a triode driving circuit, an optical coupling isolation circuit and a motor band-type brake driving circuit, wherein the MCU circuit adopts an XMC4300 control chip U1A; the triode driving circuit comprises a triode Q1 and resistors R1-R3; the optical coupling isolation circuit comprises an EL3H7 optical coupling isolation chip U1; the band-type brake driving circuit comprises an IRF7341 power chip M1, a capacitor C1, a diode D1 and resistors R5-R6, wherein 2 paths of MOSFETs arranged in parallel are integrated in the IRF7341 power chip M1,

the signal output end of the XMC4300 control chip U1A is respectively connected with one end of a resistor R1 and one end of a resistor R2, the other end of the resistor R1 is respectively connected with one end of a resistor R3 and the base electrode of a triode Q1, and the other end of the resistor R2, the other end of the resistor R3 and the emitter electrode of the triode Q1 are all grounded; a collector of the triode Q1 is connected with one input end of the EL3H7 optical coupling isolation chip U1 through a resistor R4, the other input end of the EL3H7 optical coupling isolation chip U1 is connected with a 3.3V power supply terminal, and an output end of the EL3H7 optical coupling isolation chip U1, a cathode of the diode, and D1 and D2 terminals of the IRF7341 power chip M1 are connected with 24V power supply terminals; the other output end of the EL3H7 optical coupling isolation chip U1 is respectively connected with one end of a resistor R6, one end of a capacitor C1 and G1 and G2 ends of an IRF7341 power chip M1 through a resistor R5, the other end of the resistor R6, the other end of the capacitor C1 and S1 and S2 ends of the IRF7341 power chip M1 are all connected with OV power supply ends, and D1 and D2 ends of the IRF7341 power chip M1 are respectively connected with an anode of the diode D1 and a motor.

The stepping driver control motor band-type brake driving circuit can realize direct control of the motor band-type brake through an internal circuit of the driver, and can avoid the problems of external relay increase and complex wiring; meanwhile, the band-type brake driving circuit is adopted, 2 paths of MOSFETs are connected in parallel, the driving circuit can pass larger current, and the IRF7341 power chip M1 is a low internal resistance MOSFET, so that the heating is smaller in work, and the stability of the circuit can be effectively ensured.

Drawings

FIG. 1 is a schematic circuit diagram of a stepping driver controlling a motor brake driving circuit according to an embodiment;

fig. 2 is a schematic circuit diagram of an MCU circuit in the stepping driver control motor band-type brake driving circuit in fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 and fig. 2, the embodiment provides a step driver controlled motor brake driving circuit, which includes an MCU circuit, a triode driving circuit, an optocoupler isolation circuit and a motor brake driving circuit, where the MCU circuit employs an XMC4300 control chip U1A; the triode driving circuit comprises a triode Q1 and resistors R1-R3; the optical coupling isolation circuit comprises an EL3H7 optical coupling isolation chip U1; the band-type brake driving circuit comprises an IRF7341 power chip M1, a capacitor C1, a diode D1 and resistors R5-R6, wherein 2 paths of MOSFETs which are arranged in parallel are integrated in the IRF7341 power chip M1.

The signal output end of the XMC4300 control chip U1A is respectively connected with one end of a resistor R1 and one end of a resistor R2, the other end of the resistor R1 is respectively connected with one end of a resistor R3 and the base electrode of the triode Q1, and the other end of the resistor R2, the other end of the resistor R3 and the emitter electrode of the triode Q1 are all grounded; a collector of the triode Q1 is connected with one input end of an EL3H7 optical coupling isolation chip U1 through a resistor R4, the other input end of the EL3H7 optical coupling isolation chip U1 is connected with a 3.3V power supply end, and an output end of the EL3H7 optical coupling isolation chip U1, a cathode of the diode and D1 and D2 ends of the IRF7341 power chip M1 are connected with a 24V power supply end; the other output end of the EL3H7 optical coupling isolation chip U1 is respectively connected with one end of a resistor R6, one end of a capacitor C1 and G1 and G2 ends of an IRF7341 power chip M1 through a resistor R5, the other end of the resistor R6, the other end of the capacitor C1 and S1 and S2 ends of the IRF7341 power chip M1 are respectively connected with OV power supply ends, and D1 and D2 ends of the IRF7341 power chip M1 are respectively connected with an anode of a diode D1 and a motor.

The working principle of the stepping driver control motor band-type brake driving circuit provided by the embodiment is as follows: when an XMC4300 control chip U1A sends a brake release signal, firstly, the optical coupling isolation chip U1 is switched on through a triode drive circuit, then the optical coupling isolation chip U1 outputs signals to a G1 end and a G2 end of an IRF7341 power chip M1, two N-channel MOSFETs are arranged inside the IRF7341 power chip M1, each path allows a maximum 7A current to pass through, the G1 end and the G2 end of the IRF7341 power chip M1 are respectively the gates of the two MOSFETs, when the signals are received, 2 MOS transistors inside the chips are switched on simultaneously, at the moment, the motor brake is powered on, and the brake is released; when the control signal is changed into low level, the optical coupling isolation chip U1 is disconnected, the IRF7341 power chip M1 is disconnected, the motor brake is powered off, the brake is locked, and the diode D1 is used for releasing electric energy stored in the motor brake.

The stepping driver control motor band-type brake driving circuit provided by the embodiment can realize direct control of the motor band-type brake through an internal circuit of the driver, and can avoid the problems of external relay increase and complex wiring; meanwhile, the band-type brake driving circuit is adopted, 2 paths of MOSFETs are connected in parallel, the driving circuit can pass larger current, and the IRF7341 power chip M1 is a low internal resistance MOSFET, so that the heating is smaller in work, and the stability of the circuit can be effectively ensured.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (1)

1. A stepping driver control motor band-type brake driving circuit is characterized by comprising an MCU circuit, a triode driving circuit, an optical coupling isolation circuit and a motor band-type brake driving circuit, wherein the MCU circuit adopts an XMC4300 control chip U1A; the triode driving circuit comprises a triode Q1 and resistors R1-R3; the optical coupling isolation circuit comprises an EL3H7 optical coupling isolation chip U1; the band-type brake driving circuit comprises an IRF7341 power chip M1, a capacitor C1, a diode D1 and resistors R5-R6, wherein 2 paths of MOSFETs arranged in parallel are integrated in the IRF7341 power chip M1,

the signal output end of the XMC4300 control chip U1A is respectively connected with one end of a resistor R1 and one end of a resistor R2, the other end of the resistor R1 is respectively connected with one end of a resistor R3 and the base electrode of a triode Q1, and the other end of the resistor R2, the other end of the resistor R3 and the emitter electrode of the triode Q1 are all grounded; a collector of the triode Q1 is connected with one input end of the EL3H7 optical coupling isolation chip U1 through a resistor R4, the other input end of the EL3H7 optical coupling isolation chip U1 is connected with a 3.3V power supply terminal, and an output end of the EL3H7 optical coupling isolation chip U1, a cathode of the diode, and D1 and D2 terminals of the IRF7341 power chip M1 are connected with 24V power supply terminals; the other output end of the EL3H7 optical coupling isolation chip U1 is respectively connected with one end of a resistor R6, one end of a capacitor C1 and G1 and G2 ends of an IRF7341 power chip M1 through a resistor R5, the other end of the resistor R6, the other end of the capacitor C1 and S1 and S2 ends of the IRF7341 power chip M1 are all connected with OV power supply ends, and D1 and D2 ends of the IRF7341 power chip M1 are respectively connected with an anode of the diode D1 and a motor.

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