AU1384-800MBJA2

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AU1384-800MBJA2 Application Field and Working Principle

The AU1384-800MBJA2 is an integrated circuit (IC) designed for applications in motor drives, power conversion, and power and sensor conditioning. It can be used in a wide variety of motor drives, such as servo drives, brushless DC drives, stepper motor control, and load or parameter control. This IC has been developed by Texas Instruments Inc. and is the successor to the company\'s original AU1384 IC.

Applications

The AU1384-800MBJA2 can be used in a wide variety of applications. It is ideal for controlling current in motor drives, such as servo drives, brushless DC drives, stepper motor control, and load or parameter control. Additionally, it can be used for soft-switching and resonant-mode converters, e.g., isolation converters used in medical equipment, LED lighting, telecom systems, and AC and DC motor drives. It also provides active rectification and integrated protection for high-power circuits, as well as pre-drivers for solenoid valves, contactors, and relays. It also supports various parametric monitoring functions, such as temperature, current, and voltage readings.

Working Principle

The working principle of the AU1384-800MBJA2 is based on the control of the dual-phase motor drive by utilizing the Variable Frequency Mode (VFM) concept. This is used in conjunction with a bridge circuit which, when energized with alternating current, provides an onboard voltage with the necessary peak current for two-phase operations, such as stepper motor control. The VFM concept is based on the idea that the peak current can be adjusted or switched while the frequency remains constant. This is achieved by setting a set of constant-frequency triangle waveforms, each of which representing a different peak amplitude. The desired control is then achieved by switching between the different waveforms for different settings.

The AU1384-800MBJA2 also provides integrated protection for high-power circuits, as well as advanced pre-drivers for solenoid valves, contactors, and relays. Various safety features are also integrated in the IC such as over-temperature, current over-load, and over-voltage protection. Additionally, the AU1384-800MBJA2 provides advanced diagnostic functions which utilize the Hall sensor signals to detect motor status and positioning, enabling precise motor control.

Conclusion

The AU1384-800MBJA2 is a versatile IC designed for motor drives, power conversion, and power and sensor conditioning. It is capable of controlling current in motor drives, providing active rectification, and integrated protection for high-power circuits. Additionally, it provides advanced pre-drivers for solenoid valves, contactors, and relays. It also provides various diagnostic functions which enable precise motor control, as well as various safety features such as over-temperature, current over-load, and over-voltage protection.

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