X5643P

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PMIC - Supervisors refers to a type of integrated circuit (IC) that is used to manage power systems within a device. It is responsible for the control, distribution and protection of the device’s power. X5643P is a highly integrated supervisor IC that integrates numerous functions and features suitable for a variety of applications. This article will discuss the application fields and working principles of the X5643P IC.

Application Field

X5643P is typically used in point of load (POL) dc-dc converters because of its high efficiency and flexibility. These converters enable designers to simplify the design of end circuits by powering individual processor cores, graphic chips and memories at different voltage levels. Additionally, X5643P is able to manage multiple POLs in parallel or serial manners, providing further flexibility for design integration. Furthermore, due to its PMBusI2C compatible protocol, X5643P also provides a very convenient way to monitor and manage the power systems, especially in operating LIN or CAN bus system.

Features

X5643P’s wide application fields have been made possible due to its numerous features. To start, it is able to operate at a wide working voltage range, from 2.6V to 10V, enabling it to fit a variety of hardware configurations. Furthermore, its support of both buck and boost configurations enables tremendous flexibility in the power stage design. The IC also has an embedded true-check voltage monitor, which can prevent installation errors and/or damage to other components within the system. X5643P also includes a number of protection features, including thermal shutdown, output overvoltage protection and adjustable overcurrent protection, providing a further layer of protection for the device.

Working Principle

The working principle of the X5643P IC is based on the control system configured by the master I2C controller and the separate, dedicated output controllers. The control system manages the communication between the power source and the power source’s voltages and currents. The communication between the two is done via the I2C interface. This allows the power source controller to inform the output controllers on the desired voltages and current draws. The output controllers then adjust the output voltage and current accordingly.

The X5643P also features two predefined functionalities for two-phase/single-phase buck output stages, as well as two-phase/single-phase boost output stages. This enables the professional designer to choose the most suitable target output configuration and let the multi-phase controllers take care of the rest. X5643P’s PMBus compatible interface provides the designer with the ability to configure specific settings such as voltage and current settings, as well as thermal protection thresholds.

Conclusion

X5643P is a highly integrated supervisor IC that is suitable for a variety of applications. It offers numerous features such as support for buck and boost configurations, adjustable overcurrent protection, and thermal shutdown. Additionally, its ability to operate at a wide working voltage range, from 2.6V to 10V, allows designers to easily incorporate the X5643P into existing hardware configurations. Finally, the PMBus compatible interface simplifies the power management process and allows designers to easily configure their system settings.

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