TPS65561RGTT

TPS65561RGTT Application Field and Working Principle

The TPS65561RGTT is a robust multi-phase ultra-low power management integrated circuit (PMIC) designed for highly efficient power distribution in handheld devices powered by one or more Li-on cell batteries. It provides system level solutions to reduce overall power dissipation and boosts load current capability, allowing system to achieve highest power savings.

It is specially developed to support multiple application such as camera, video, handsets, wearable, and other mobile devices. It is integrated with multiple power options, such as a multi-phase step-down buck converter, a high speed low-side MOSFET driver, a low-side power switch, and an ultra low-power regulator. The device is suitable for a wide input voltage range and provides up to 8A of output current, making it suitable for most mobile devices. It also provides built-in OVP and OCP for system protection.

Working Principle

The TPS65561RGTT is designed to optimize system power efficiency, reduce power dissipation and boost the load current capability. The device has a high-performance, four-phase synchronous buck regulator. The four-phase buck regulator operates in two phase-shifted modes, allowing the output voltage to remain stable even with varying load conditions. The four-phase system improves phase current-sharing balancing between phases, providing improved power conversion efficiency. This improves system level power consumption saving and also boosts load current capability. The device provides ultra-low dropout voltage, allowing it to be used in deep-sleep operation.

It is capable of handling output voltages from 1.4V to 1.8V and is also equipped with OVP and OCP for system protection. Additionally, the device is designed to minimize internal power consumption, providing improved power efficiency. The device also integrates a low-side MOSFET driver, allowing it to be used as an asymmetric buck converter, providing further power savings.

Conclusion

The TPS65561RGTT is an ultra-low power PMIC suitable for use in mobile and handheld applications. It provides high-performance, four-phase buck regulator, allowing system to achieve highest power savings. It integrates multiple power options, and provides OVP and OCP for system protection. The device is self-adjusting, minimizing internal power consumption and providing improved power efficiency. It is capable of handling output voltages from 1.4V to 1.8V, and can be used as an asymmetric buck converter, providing further power savings.