MC34905CS3EKR2

MC34905CS3EKR2 application field and working principle

As the world is more and more dependent on portable electronic products, the demand for efficient power management solutions is also increasing. In order to meet this demand, different power management integrated circuits (PMICs) are developed to provide optimized and efficient power conversion technology. The MC34905CS3EKR2 is a PMIC-type integrated circuit; more specifically, it belongs to the Specialized Power Management branch in PMICs.

Application Field

The MC34905CS3EKR2 is a highly integrated power management IC designed for portable electronic devices running on Li-ion battery. It is optimized for minimizing the total cost of the power management solution. The device integrates both power path management and a battery management system (BMS) on a single integrated circuit. This integration of power path and battery management significantly reduces the cost and board space of the power control solution. In addition, the MC34905CS3EKR2 has a special real time operating system (RTOS) which enables efficient firmware updates and advanced power management functions.

The MC34905CS3EKR2 is designed to manage multiple Li-ion batteries in series stack configuration with a nominal voltage range of 8 V to 28 V. It is suitable for powering the most demanding applications requiring high-current charge and discharge up to 6A. It can also be used to power standard applications up to 3A while maintaining low quiescent supply current of 32mA.

The MC34905CS3EKR2 is widely used in industry-leading portable electronic portable devices such as medical devices, drones, robotics, electric vehicles, power tools, consumer electronics, and smart home systems.

Working Principle

The working principle of the MC34905CS3EKR2 is based on a central bus architecture which allows for the integration of multiple voltage regulators, buck converters, and battery management systems into one single power management device. The device works by regulating the electric current from the battery to a stable output voltage, which is then used to power the various components of the portable device.

The integrated RTOS controls the various components of the device and allows for advanced power management functions such as thermal shutdown, over voltage protection, over current protection and system monitoring. The RTOS also provides software protection against unauthorized firmware updates and other malicious code.

The MC34905CS3EKR2 also integrates a BMS, which is responsible for providing the necessary charging and monitoring of the batteries. The BMS monitors the state of charge, temperature, and voltage of the batteries, while providing the necessary protection to ensure safe operation of the device.

In terms of advanced power management, the MC34905CS3EKR2 includes advanced features like dynamic power switching and voltage scalability, which enables the device to adjust its input and output voltage levels depending on the current load and temperature. This helps reduce power consumption and extend the life of the device.

Conclusion

The MC34905CS3EKR2 is a highly integrated power management IC designed for portable devices running on Li-ion batteries. It integrates BMS, power path management, and a RTOS for advanced power management functions into a single device, thus significantly reducing the cost and board space of the power control solution. The device is suitable for high current charge and discharge up to 6A and can be used to power various portable electronic devices.