TPS54350MPWPREP Integrated Circuits (ICs)

Introduction

The TPS54350MPWPREP is a DC-DC switching voltage regulator offering high efficiency, excellent transient response, and low quiescent current under light load. Built using the Texas Instruments’ proprietary NexFET Power MOSFET technology, the TPS54350MPWPREP is designed to meet stringent requirements from high-current automotive, industrial, and consumer applications. In addition, its high step-down ratio and accurate current limit make it ideal for a variety of different applications with different power requirements, including LED lighting and motor control.

Application Fields and Working Principle

The TPS54350MPWPREP offers a wide operating temperature range of -40°C to 150°C, allowing it to operate in harsh environments. It is designed for automotive, industrial and consumer applications, and is ideal for space and power sensitive applications, such as LED lighting, motor control and power distribution systems. The device supports step-down voltage regulation with a wide input voltage and precise output voltage.

The TPS54350MPWPREP operates in a buck configuration and employs an adaptive constant on-time (COT) control scheme. COT control requires a relatively small number of external components for fast loop response, thus reducing total system power losses. It also provides excellent dynamic line and load regulation, eliminating sources of errors due to line or load fluctuations.

The device supports a wide input voltage range of 4V to 40V and up to a continuous output current of 4A, delivering up to 100% duty cycle at the start-up. The TPS54350MPWPREP also has an integrated dual-mode slope compensation system which allows for fast transitions between PWM and DCM modes. This system ensures good transient performance, continuous operation in DCM mode, and low output ripple.

In addition, the device also provides excellent stability, programmable soft-start, and programmable over-current protection. The TPS54350MPWPREP is also designed to provide up to 80% efficiency and has a low quiescent current of less than 10µA in sleep mode. This low quiescent current makes it suitable for battery-powered applications.

Conclusion

The TPS54350MPWPREP is a DC-DC switching voltage regulator designed for a wide range of industrial, automotive and consumer applications. It offers a wide input voltage range, high efficiency and excellent transient response. The device also provides excellent stability, programmable soft-start and over-current protection. Its low quiescent current makes it suitable for battery-powered applications.