TPS61281AYFFR

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TPS61281AYFFR Application Field and Working Principle

Introduction

The TPS61281AYFFR is a synchronous buck converter from Texas Instruments that provides up to 2A of continuous current with dense power delivery. It can operate from input sources ranging from 2.3V to 17V, enabling it to be used in a variety of applications such as laptops and mobile phones. This device is part of Texas Instruments’ PMIC (Power Management Integrated Circuit) family of products and is used to regulate the voltage and current requirements of electronic components in an electronic circuit. It is classified under Voltage Regulators – DC DC Switching Regulators.

Application Field

The TPS61281AYFFR DC-DC converter is ideal for applications where a compact and reliable power management solution is needed. Its high efficiency, low noise, and compact form factor make it suitable for applications such as:

• Portable and mobile devices
• Digital consumer such as digital cameras, media players and PDAs
• Battery powered high capacity applications such as notebooks and handheld gaming devices

Working Principle

The TPS61281AYFFR utilizes two main components, a high-side p-channel MOSFET and a low-side n-channel MOSFET, to deliver power from a DC source. The high-side MOSFET is controlled by a PWM controller which enables it to turn off and on quickly, allowing it to regulate the voltage and current of the output voltage. When the Output Voltage is higher than the intended, the PWM controller turns off the high-side MOSFET, reducing the current flow to the load. On the other hand, when the Output Voltage is lower than the desired voltage, the PWM controller turns on the high-side MOSFET, increasing the current to the load.

The output voltage is compared with the reference voltage and the error is used to generate the PWM signal. This signal is generated by the PWM controller which enables the MOSFETs to turn on and off at the right time to achieve the desired output voltage. The TPS61281AYFFR also includes several protection features including over-temperature, over-current, under-voltage lockout, and short-circuit protection, which protect the device and the circuit.

Conclusion

The TPS61281AYFFR is a synchronous buck converter from Texas Instruments that provides up to 2A of continuous current with dense power delivery. It is part of Texas Instruments’ PMIC family of products, classified under Voltage Regulators – DC DC Switching Regulators This device is ideal for applications such as portable and mobile devices, digital consumer electronics, and battery powered high capacity applications due to its high efficiency, low noise, and compact form factor. The output voltage is regulated by the PWM controller which turns on and off the high-side and low-side MOSFETs in order to achieve the desired output voltage. The TPS61281AYFFR also includes several protection features to protect the device and the circuit.

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