TPS2815DRG4

Introduction

The TPS2815DRG4 is a low dropout linear regulator driver designed for powering high-efficiency power management integrated circuits (PMICs). The device is a buck-boost linear regulator, consisting of a digital input isolator, low-side MOSFET gate driver, and buck-boost regulator controller with integrated protection functions. It is suitable for applications where a smaller package size, higher frequency, and higher efficiency are desired, including regulating gate-drive voltage for low-voltage PMICs such as PMICs used in low-voltage DC-DC converters, power converters, and battery management systems.

This article provides an overview of the TPS2815DRG4 application field, working principle and features.

Application Field and Work Principle

The TPS2815DRG4 is designed for use with high-performance switching buck-boost linear regulators and is ideal for providing power to load steps of one to ten watts as well as more. The device’s isolation provides a very stable voltage source, independent of the load current and power supply transients, while the output voltage can be tightly regulated. The driver’s internal buck-boost regulator circuitry works on a principle known as active voltage drop compensation. It uses an integrated compensation circuit to compensate the output voltage drop caused by the load’s current consumption.

The TPS2815DRG4 also incorporates a single-ended gate driver circuit with a short circuit protection to prevent damage due to shorted outputs or output transients. The driver features a wide operating range from 2.5V to 5.5V with a maximum output voltage of 5.8V and a slew rate of 2A. It also has a low minimum on-time of 0.575 µs and a low maximum off-time of 4.1 µs, allowing for improved efficiency and fast settling times.

The TPS2815DRG4 is ideal for supplying power to PMICs such as DC-DC converters, flyback converters, LED drivers, and battery management systems with lower input and output voltages. It can provide an additional gate voltage up to 5.8V, and its short-circuit protection helps protect systems from damage due to output shorts or transients.

Key Features

The TPS2815DRG4 is ideal for powering high-efficiency PMICs and systems due to its high efficiency and small package size. Key features include:

• High frequency up to 300 kHz
• Low RDS(ON) MOSFET reduces power dissipation and increases efficiency
• Integral short-circuit protection protects against output shorts and output transients
• Wide operating range from 2.5V to 5.5V
• Low minimum on-time of 0.575 µs
• Low maximum off-time of 4.1 µs
• High peak output of up to 5.8V

The TPS2815DRG4 is a highly efficient, low-power integrated linear regulator driver designed specifically for powering high-efficiency PMICs and systems with lower input and output voltages.

Conclusion

The TPS2815DRG4 is a low dropout linear regulator driver designed for powering high-efficiency PMICs and systems. It is suitable for applications where a smaller package size, higher frequency, and higher efficiency are desired, including regulating gate-drive voltage for low-voltage PMICs. The driver features a wide operating range and integral short-circuit protection, and the integrated buck-boost converter reduces the need for external components. Thanks to its high frequency, low RDS(ON) MOSFET, and small package size, the TPS2815DRG4 enables higher efficiency, faster settling times, and a greater design flexibility.