TPS657120YFFR

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The TPS657120YFFR is an award-winning power management integrated circuit (PMIC) designed to operate with dual-input supplies across a wide range of voltages. The device is designed to prioritize a lower voltage rail that is available with or without passing through the reverse-diode protection circuit, referred to as the alternate low voltage (ALV) mode. It offers an economical solution for 1.8V to 5V systems and can provide up to 2A at both the output voltages with a typical efficiency of 93%. It is designed to occupy minimal board footprint and therefore, suitable for space-constraint applications. The integrated step-down converter can also be used to power load from input voltages up to 9V and 24V, with a predictable constant output voltage level across all input voltage and temperature variations.

The TPS657120YFFR has versatile digitally controlled register settings, enabling additional flexibility for user-defined applications. It also features an enable input, which enables and disables the converter’s output stage. It also features various features such as adjustable slope compensation, over-temperature protection, cycle-by-cycle current limiting, and short circuit protection. Apart from these features, the device also includes power-saving features such as a low operating quiescent current of 104µA, power-good indicator output, and a power-saving burst mode of operation.

The TPS657120YFFR is suitable for a wide range of application fields. It is particularly suitable for portable devices, small form factor devices such as smartphones, tablets, and wearables. It is also suitable for low voltage system power supply applications in portable media players, navigation systems, and industrial or medical equipment. Additionally, its small footprint coupled with its efficient and accurate output regulation makes it suitable for powering devices such as LED backlights, LCD displays, RF modules, and sensors.

The device integrates an adjustable fixed frequency current-mode hysteretic pulse-width-modulated (PWM) buck converter, consisting of a fixed-frequency peak voltage-mode synchronous rectifier. It enables fast transient response, cycle-by-cycle over-current protection, and operates with no external compensation circuit. The adjustable PWM frequency helps to minimize the external component size with a wide range of output voltage levels, enabling simpler and more efficient design with fewer external components.

In order to provide dynamic control for the output voltage, the device includes an enable input voltage pin, which allows the user to dynamically adjust the output voltage by writing to the register. It has a maximum output current of 500mA, and the output can be up to 30V. It features a wide operating temperature range from -20℃ to +125℃ and has an operating temperature industrial operating grade that ranges from -40℃ to +125℃.

Apart from its multiple features and applications, the TPS657120YFFR has superior thermal performance and offers optional voltage margining in its ALV pin, allowing the user to adjust the output voltage accordingly. Additionally, it has an on-chip soft start sequencer that allows the output voltage to reach its target level without generating any inrush current. It is designed to provide a very low quiescent current, resulting in accurate output voltage tracking across a wide temperature range and improved power efficiency.

In conclusion, the TPS657120YFFR is a low-cost and feature-rich power management integrated circuit specifically designed to prioritize a lower voltage rail while providing adequate load current and maintaining a wide operating temperature range. It offers a flexible, reliable, and high-performance solution for various power-charging applications, and its versatile Register programming options make it an ideal choice for many embedded and system-level applications.

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