TPS61280YFFT Integrated Circuits (ICs)

The TPS61280YFFT is a synchronous DC/DC converter and power management IC (PMIC) designed for use in various computing and mobile applications. Operating in buck and boost mode, it efficiently reduces input voltage to the level needed by the system, while providing fast transient response and high accuracy voltage control. The device is offered in PQFN and WLCSP packages, both featuring a highly compact form factor.

The TPS61280YFFT is designed to support a wide range of power requirements in modern computing and mobile applications, such as those powered by laptop, notebook, or tablet computers. Its main features include an integrated dual-output synchronous boost converter, a high-accuracy low-noise voltage reference, write/read interface for digital power programming, an over-temperature protection, and an optional watchdog timer. Its compact design fits into the smallest application space and provides a high degree of system integration.

Functionality

The TPS61280YFFT is designed to provide efficient, high-accuracy voltage regulation with fast transient response, as well as a wide range of protection features, with input and output disconnection, overvoltage shutdown, and over-temperature protection. The device supports a wide input voltage range from 2.5 to 5.5V and offers adjustable output voltages from 0.9V to 5.0V. Its very low quiescent current of 0.2µA in shutdown mode makes it suitable for low-power applications.

Working Principle

The TPS61280YFFT is based on a synchronous DC/DC converter, increasing or reducing the input voltage as required. It operates in a voltage-mode control scheme, which uses a single output voltage control loop to produce regulated output voltage. The IC employs a current-mode control scheme to ensure fast transient response and eliminates any requirement for loop compensation. The PWM carrier-based control scheme also eliminates control signal glitches, improves EMI performance, and minimizes switch node oscillation.

The device utilizes proprietary dynamic voltage scaling technology to regulate output voltage over a wide range of input voltages, while maintaining high accuracy. The dynamic voltage scaling maintains the output voltage ripple within the specified tolerances. The IC also features two additional voltage levels, which can be programmed for dynamic supply voltage scaling or system power management.

Applications

The TPS61280YFFT is specifically designed for computing and mobile applications. It is suitable for a range of applications from laptop power supplies to tablet power systems, as well as DC/DC converters for automotive, FPGA and ASIC power solutions, and a variety of consumer and industrial electronics. It can also be used to provide secondary power for USB-C port applications, as well as for portable medical devices and polarity-free power supplies.

Conclusion

The TPS61280YFFT is a highly integrated PMIC designed for portable and computing applications. It offers a high level of system integration with its integrated dual-output synchronous boost converter, a low-noise voltage reference, write/read interface for digital power programming, as well as protection features such as input/output disconnection, overvoltage shutdown, and over-temperature protection. The device\'s very low quiescent current makes it suitable for low-power applications, while its dynamic voltage scaling technology ensures high accuracy voltage control with fast transient response.