TPS62222DDCRG4

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TPS62222DDCRG4 Application Field and Working Principle

The TPS62222DDCRG4 is a low quiescent current synchronous step-down DC-DC converter integrated circuit from Texas Instruments\' power management product family. This device is specifically designed for portable battery-powered applications with stringent space and power requirements, such as medical sensors, smart wearables, and hearables. This 5-pin chip integrates a buck regulation controller and a low-side MOSFET to create a power-efficient tiny footprint of 4mm x 4mm.

The TPS62222DDCRG4 integrates the features of a low quiescent current, step-down switched-mode power supply (SMPS) with a wide input voltage range of 2.5V to 5.5V and a low output voltage range of 0.85V to VIN. It also offers high efficiency and over 90% peak efficiency. In addition to these features, the TPS62222DDCRG4 has an adjustable output voltage and an adjustable current limit. It also provides comprehensive enable, soft-start, current-mode, and over-temperature protections.

Application Field

The TPS62222DDCRG4 is designed primarily for extremely low quiescent current and efficiency applications, such as sensors, microcontrollers, and hearables. This chip is ideal for these applications because it requires very little space, has a wide input voltage range, and has adjustable current limit as well as adjustable output voltages.

The combination of its extremely low quiescent current and high efficiency make the TPS62222DDCRG4 a great choice for battery-powered applications. Its low quiescent current allows for longer battery life, while its high efficiency ensures that less power is lost in transmission from the battery source to the device. In addition, its wide input voltage range allows for the use of a variety of power sources, making it an ideal choice for any application.

Working Principle

The working principle of the TPS62222DDCRG4 is similar to a standard voltage regulator circuit. The device consists of an input stage and an output stage that regulate the voltage of the circuit. In the input stage, the input voltage is conditioned through a series of switchable components, such as a MOSFET, which control the amount of current entering the converter. The controller in the input stage monitors the input voltage and adjusts the duty cycle of the MOSFET to maintain the desired voltage output.

In the output stage, the output voltage is then transformed to the desired output voltage through a series of voltage level-shifting stages, such as a buck converter. The controller in the output stage adjusts the duty cycle of the converter to maintain the desired output voltage. Finally, the output voltage is monitored and regulated by the low-side MOSFET.

The TPS62222DDCRG4 offers a wide range of input and output voltage ranges, adjustable current limit, and adjustable output voltages, making it an ideal choice for any application that requires power efficiency, low quiescent current, and low cost. It is perfect for battery-powered applications and is a great choice for any device that requires a dependable and efficient voltage regulator.

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