TPS22921YZTR

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Power distribution switches, load drivers, and PMICs (Power Management ICs) are essential components of any electrical circuit, providing a range of functions such as power distribution, preventing power overloads, and regulating the flow of current. The TPS22921YZTR is a monolithic power management chip (PMIC) from Texas Instruments that offers power distribution switching and load drivers for a range of applications. In this article we\'ll take a closer look at the TPS22921YZTR application field and working principle.

Overview of the TPS22921YZTR PMIC

The TPS22921YZTR is a 150V, integrated N-Channel MOSFET power switching solution, offering a range of features that make it suitable for use in a number of different applications. It features spread spectrum PWM dimming, integrated thermal-shutdown protection, over voltage, and over-current fault protection. It also offers 200mV/A linear current sensing, ensuring that current is accurately monitored and regulated.

The device offers two separate output channels and is programmed via a single I2C interface, making it ideal for applications that require two regulated voltages. It also features two integrated LDO regulators, which can be used to supply two separate low-voltage power supplies.

Applications of the TPS22921YZTR

The TPS22921YZTR is a very versatile PMIC and is suitable for a range of different applications, including:

• Power supplies
• DC/DC converters
• LED lighting
• Power over Ethernet (PoE)
• Solar inverters

The device is also suited for automotive applications, with its improved EMI performance offering greater protection against electromagnetic interference. As a result, it is suitable for use in automotive battery management, intelligent junction box applications, and power charging systems.

Working Principle of the TPS22921YZTR

The TPS22921YZTR makes use of two integrated N-Channel MOSFETs to switch power in two different output channels. The two MOSFETs are controlled by Pulse Width Modulated (PWM) signals, which reduce energy loss and provide high efficiency operation. The PWM signals are generated by the device\'s internal circuitry and each MOSFET can be operated at a different frequency, making it suitable for applications such as LED lighting that requires multiple voltage levels.

The device is also equipped with integrated thermal protection and a range of fault protection features, including overtemperature protection, output current limit, overvoltage protection, and a short-circuit protection circuit. It also offers integrated EMI filters for improved EMI performance and linear current sensing for accurate current monitoring.

Conclusion

The TPS22921YZTR is a versatile and powerful PMIC, offering power distribution switching and load drivers suitable for a range of different applications. It features two integrated N-Channel MOSFETs, spread spectrum PWM dimming, linear current sensing, and a range of safety features. As a result, it is well suited foruse in automotive, commercial, and industrial applications.

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