SMA6821MH

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PMIC (Power Management IC) or power supply IC is an integrated circuit (IC) with a specific purpose of delivering electrical power to electronic devices, most commonly for consumer electronic devices. The SMA6821MH is a PMIC designed specifically for motor drivers and controllers. It features a configurable range of power, up to 16A, and has many advanced features to make it an ideal choice for automotive applications demanding stringent safety requirements.

The SMA6821MH is an ideal choice for driving powerful 3-phase brushless DC motors, stepper motors, and traditional film motors. It is designed to the Automotive Safety Integrity Level (ASIL) to meet the needs of various automotive motor control applications such as electric vehicles, automatic door operators, heavy industrial machinery, and more. With advanced functionalities such as over-current protection, current mode control, and thermal protection, the SMA6821MH is reliable and safe.

The SMA6821MH supports a wide input voltage range of 8V to 80V, a wide output voltage range of 5V to 48V, and efficient output power up to 240W. It has an integrated MOSFET and can deliver 3-phase currents up to 16A continuously, and surge current up to 30A. It features an integrated and efficient current-mode Buck-Boost architecture that reduces noise and ensures reliability. The device also features a range of protection functions such as over current protection (OCP), over temperature protection (OTP), over voltage protection (OVP), and under voltage protection (UVP).

The working principle behind SMA6821MH is based on a controllable, bidirectional energy transfer system that can deliver power to multiple motors while also recovering power generated from motor braking. The device uses current-mode control techniques to detect the motor current and ensure that it is regulated within the desired range. This helps to maximize the efficiency of the motor and minimize power loss. Additionally, the device has an integrated startup circuit that protects the sensitive components from damage due to voltage surges when the motors are started.

The SMA6821MH is a flexible solution, allowing for custom applications. Programming the device parameters is easy and is done via PMBus. The device is also PWM configurable, providing for an adjustable frequency range from 200kHz to 1.2MHz. Additionally, there is an integrated DIODE, which helps to reduce EMI (electromagnetic interference) and protect against switching noise.

The SMA6821MH is an ideal choice for driving large motors and controllers, providing safety and reliability. With its integrated MOSFET, wide input and output voltage range, and advanced protection functions, the device is suitable for a variety of motor control applications. With its PWM compatibility and programmable parameters, the device can be used in custom designs to meet the needs of different applications.

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