TPS62142RGTT

Introduction

The TPS62142RGTT is a programmable DC-DC switching regulator designed specifically for use in mobile phone, tablet and portable applications. It features a 1.2 V to 5.5 V adjustable output voltage, a frequency range of up to 2 MHz, and a high-efficiency, low-noise, low-cost design. It can be used to provide regulation for a wide range of device requirements, from low-power standby operations to high-power peak load conditions.

Application Field

The TPS62142RGTT can be used in a variety of applications, including mobile phones and tablets, automotive infotainment systems, personal audio devices and Wearable’s/IoT systems. Its programmable features allow it to be used in a wide range of voltage, frequency, topology and current requirements, providing system designers with a cost-effective and reliable power management solution.

Working Principle

The TPS62142RGTT follows a synchronous buck topology, with a dedicated PWM controller and high-side and low-side power MOSFETs. The operating frequency is set by the external resistor-capacitor (RC) circuit, or by the direct control pin (FREQ CTRL pin). The input voltage is divided across an internal resistor divider to adjust the feedback voltage. An output voltage is determined by the control loop.

The device contains a number of programmable features to ensure fast transient response and accurate output voltage regulation. These include a wide input voltage range (1.2 V to 5.5 V), a low-dropout voltage, a switch-mode regulator, a high-frequency operation (up to 2 MHz), and an adjustable switching frequency. The device also features adjustable current limit and voltage limit settings.

The device also features an integrated temperature-sensed shutdown (TSSD) circuit to protect the device in case of an over-temperature event. The TSSD circuit is powered by a dedicated power input pin (VTSSD). The TSSD will shut down the output voltage when the temperature exceeds the device\'s maximum junction temperature rating.

Conclusion

The TPS62142RGTT is a low-cost, high-efficiency, wide-input-range, 2 MHz synchronous step-down DC-DC switching regulator. Its wide range of programmable features presents system designers with a cost-effective and reliable power management solution for a variety of applications, including mobile phones and tablets, automotive infotainment systems, personal audio devices and Wearable’s/IoT systems.