MC34845AEP

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MC34845AEP is a two-channel and three-phase motor driver integrated circuit (IC) from Texas Instruments’ microcontroller (MCU) and peripheral (PMIC) product family. It is an innovative solution designed for heavy-duty and mid-range application fields, such as automotive, industrial, aerospace and medical. The device supports automotive configurable current sensing technology and operating temperature ranges between –40 C and +125 C, making it suitable for most reliable and robust applications.

The MC34845AEP operates within a wide input voltage range of 4.5 V to 16 V with a single power input and is able to deliver an output current of up to 6 A per channel. The IC provides a 3-phase PWMs for motor control and two high-sides for power stage, configurable current sense and protection, allowing for more versatility and flexibility in motor control.

The operating principle of the MC34845AEP is simple yet effective. When the power supply pin is high, the PWM signal drives the two high-sides on the motor control output at the desired duty cycle. During motor operation the controlled current is sensed by the integrated current sense resistor and the signal is connected to the current sense comparator. The comparator then compares the signal from the current sense resistor with the programmed threshold and activates the current limit signal if the threshold is exceeded. The current limit signal is connected to the logic signal of the driver, preventing it from exceeding the programmed threshold.

MC34845AEP makes use of the latest in LED driving systems, providing advanced solutions to the needs of both the consumer and professional lighting market. The device integrates a highly effective three-phase PWM controller with two protected high-current outputs and enables the design of both constant current or constant voltage LED solutions in a wide range of power ratings. The integrated current sensing and protection functions allow the controller to detect and protect against any over-current events that can occur in a LED system.

Overall, the MC34845AEP is a great choice for motor control and LED driver solutions. With its two high-sides for power stage and configurable current sense and protection which make it suitable for a wide variety of applications, it can efficiently and reliably drive motors and LED lighting.

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