TPS2224PWPR

Power Management Integrated Circuit, commonly referred to as PMIC, is a device that provides mixed power sources and voltage level, regulation, and protection necessary for embedded systems. It\'s responsible for pooling power across all the blocks in the system and distributing them according to their specs, managing during multiple power sequence transition and taking the necessary steps in each of the transition. This article focuses on the TPS2224PWPR power management IC, which is a single-chip, high-performance, robust solution for distributing digital power and supporting associated monitoring functions.

Application Field

The TPS2224PWPR is applicable to various regulated power supply environments, ranging from DTV, data center and computer components, automotive systems, medical device, industrial automation and embedded systems. An important feature to note is that this IC is built to withstand an operational temperature range of – 40° to +85 °C

Other key features of this PMIC are its high power switching, low voltage operation, high current operation, low power operation, over-voltage protection, over-current protection, hot-swap operation, and power sequencing. All of these features make the TPS2224PWPR a preferred choice for many power management applications.

Working Principle

The TPS2224PWPR is a dual-channel load driver that integrates over-voltage protection and over-current protection in a single package. It allows load switching between two power sources and provides an accurate switched-voltage monitor as feedback. It\'s adaptable to any load with a wide input voltage range of 4.5V to 30V and with an output voltage range of 0.5V to 30V.

The IC is composed of two channels, each with its own PWM (pulse-width modulation) control logic and its own FETs for respective power switching. It also contains internal bus delays to ensure the correct sequencing of power-on and power-off of both channels. The TPS2224PWPR also has a number of protection features such as over-voltage protection (OVP) and over-current protection (OCP). It also has advanced thermal-shutdown protection for over-heating conditions.

In basic operation, the logic block of each channel will monitor the voltage and current levels at the respective outputs and drive FETs to switch the respective power sources accordingly. In the case of over-current or over-voltage conditions, the chip will shut down the respective channels to prevent further power damage. The power transition is also done on a symmetrical basis to avoid power interruption.

Conclusion

The TPS2224PWPR is an ideal PMIC solution for high-performance and robust power management applications. With its wide input and output voltage range, high switching and current capability, and advanced protection, the TPS2224PWPR provides the necessary and reliable power delivery for any system.