SMA6852MZ LF2451

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Motor controllers and drivers are essential components in applications in various fields and industries to enhance the performance of a wide range of devices. They act as a bridge between electrical motors and power supplies, allowing users to control and manage the speed, power and torque output of motors, thereby ensuring the dependability and reliability of the system. The StMicroelectronics SMA6852MZ and LF2451 are two PMICs designed to provide advanced motor control features and are currently being used in numerous automotive, industrial and consumer applications. In this article, we will discuss the application fields and working principles of these two PMICs.

SMA6852MZ: Application Fields

The SMA6852MZ is a three-phase brushless DC motor driver with integrated power management, comprising an in-phase (IPM) gate driver, fast demagnetization driver and startup/speed regulator IC. It is suitable for a wide range of automotive applications, such as electric brakes, electric windows, electric seat movement and motorized sunroofs. It is also suitable for industrial applications, such as conveyor belts, automated lifts, fans and pumps.

The SMA6852MZ is designed to optimize the performance of automotive and industrial applications, providing reliable and accurate motor control with low power consumption and low jitter. It is also highly configurable, allowing users to customize their applications in terms of speed, torque and power output. It is compatible with a wide range of power supply voltages, ranging from 9V to 42V.

SMA6852MZ: Features and Working Principles

The SMA6852MZ is a low power motor driver that utilizes low side PWM current control for efficient motor control. It integrates an IPM gate driver which operates at: 5V logic voltage, with a 3.3V level shift. It also integrates a fast demagnetization driver, which regulates the speed and enables fault-free operation even in the event of under-voltage or over-voltage conditions. It also includes a startup/speed regulator IC, which provides accurate current and voltage control, making it suitable for use in applications with tight speed and torque requirements.

The SMA6852MZ also offers built-in over-current and over-temperature protection features, allowing users to prevent damage to their system in the event of any fault. Other features include a pull-up resistor, which reduces power consumption, and a selection logic which allows users to select the desired operation: manual or automatic.

LF2451: Application Fields

The LF2451 is a range of four-phase DC motor drivers, ideal for a variety of automotive, industrial, and consumer applications. It is designed to provide superior current and voltage control, allowing users to accurately control the speed and torque output of motors. Applications include automated window lifting systems, power sunroofs, and electric seat movement.

The LF2451 is designed to operate at a wide range of power supply voltages, ranging from 18-60V, allowing users to optimize their applications for maximum efficiency.

LF2451: Features and Working Principles

The LF2451 is a four-phase motor driver that utilizes pulse width modulation (PWM) current control for efficient motor control. It integrates four independent channels on a single chip, each of which can be independently controlled, allowing users to synchronize four-phase motors for more accurate control. It also integrates an electronic overload protection feature, which prevents damage to the system in the event of an overload.

The LF2451 also offers built-in current sense protection, which allows users to monitor the current flow in their motor and take corrective action if required. It also offers a sleep control feature, which allows users to reduce power consumption in low power scenarios. Other features include a startup signal logic, which prevents the motor from restarting until current levels have returned to normal.

Conclusion

The StMicroelectronics SMA6852MZ and LF2451 are two highly versatile PMICs designed to provide advanced motor control features in automotive, industrial and consumer applications. They both offer highly configurable solutions with low power consumption and low jitter, allowing users to customize the speed, power, and torque of motors in their applications. With the features, protection and control features that these two PMICs offer, they are both ideally suited for a wide range of motor control applications.

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