A3935KLQTR

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A3935KLQTR is a PMIC driver, controller and motor driver that is typically used to control the speed and positioning of the motor in a variety of applications. It is typically employed in motion control applications such as automotive, medical, industrial and home automation systems. The A3935KLQTR provides a three-phase sinusoidal driving waveform for driving synchronous motors in applications where low current consumption, motor noise reduction and overall performance are important factors. The device features a three-phase output voltage subsystem, auxiliary power supply, and supporting peripheral circuitry. The motor driving waveform is generated by a sinusoidal PWM modulator based on pre-programmed speed and current limiter settings.

The A3935KLQTR is intended to be programmed using an external microcontroller by SPI or UART, and can be programmed with up to 8 distinct motor steps. It also has a high-side current sense circuit that allows for integrated measurement of current levels in each of the three motor phases and can provide instantaneous current protection if a the current levels exceed programmed thresholds. The device also includes integrated overload, overvoltage, and undervoltage protection.

The A3935KLQTR is specifically current-driven, meaning that it utilizes the measured current values to control the motor. This can be done using closed-loop current control or open-loop speed control. The device features a configurable output voltage loop as well as a sine wave control, which allows for greater noise reduction and improved system performance. The A3935KLQTR also features pre-calibrated dwell timing and programmable ramp-up and ramp-down rates.

The A3935KLQTR is a simple and compact solution for driving synchronous motors in a variety of applications. It features an integrated current sense circuit and supports SPI and UART direct control. The device is designed for easy integration into motor control systems using low current consumption, motor noise reduction and overall performance as the key factors. Additionally, it provides configurable protection, pre-calibrated dwell timing, and programmable ramp-up and ramp-down rates.

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