TPS60311DGSG4

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TPS60311DGSG4 is a charge-pump DC-DC buck switching regulator with high efficiency and excellent load transient capability. The current limit is adjustable and it provides low noise and EMI performance, as well as very low quiescent current consumption. It is suitable as an economic power solution in many applications like mobile phones, tablet computers and other portable applications. It is also able to power systems where no available supply rail exists at the required voltage level. The charge pump architecture offers high efficiency over the entire load range, and the integrated PMOS switches make the TPS60311DGSG4 an ideal selection for cost-sensitive applications.

Application Field

The TPS60311DGSG4 is designed for continuous operation from a + 2.5 V to +5.5 V input, and provides an output voltage of either 1.5 V to 5.5 V or 2 V to 5 V. It can deliver up to 300 mA of output current and is an excellent choice for a wide range of applications, including M2M, wireless sensor network, mobile accessories, media players, electric vehicles, portables, and other cost-sensitive applications.

Working Principle

The TPS60311DGSG4 utilizes a 3-phase charge pump architecture to provide high efficiency over the entire load range. A continuous mode control loop design ensures precise dynamic load line tracking, while the integrated PMOS switches reduce component count and cost. An adjustable 0.8 A current limit threshold allows the device to handle high output currents without affecting the regulation loop performance, while competing devices rely on an external FET to provide over-current protection. The TPS60311DGSG4 also provides low noise and EMI, as well as a very low 1.5 μA quiescent current. The device also features enable and power-down control, as well as integrated soft-start for optimal current limit management.

The TPS60311DGSG4 also comes with a wide range of disable functions for improved efficiency and cost savings. The device supports a typical enable time of 100 ns, making it suitable for powersaving operational modes. The integrated soft-start function ensures gradual current loading, while the internal PWM and PSM controls guarantee clean shutdown during transition from powered-up to powered-down mode. The device also offers an adjustable output voltage so it can be optimized for each application.

The TPS60311DGSG4 also offers a variety of protection features. It includes an accurate, programmable thermal-shutdown threshold and UVLO functions, as well as integrated over-voltage protection for maximum system robustness and reliability. The device also features loop compensation that is external to the IC, making it easily customizable for any application.

Overall, the TPS60311DGSG4 is an excellent choice for applications requiring high efficiency, low noise, and excellent transient capability with minimal external components. With its wide range of features and low cost, it is an ideal solution for cost-sensitive, energy-efficient designs.

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