TPS76518DR

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The TPS76518DR is a three-phase, step-down dc-to-dc synchronous buck converter, specifically designed for output power requirements from 2 to 18 W. It is designed with a fully integrated, smart power stage, providing a complete power solution for challenging power subsystems found on application processor, ASICs and other high performance digital devices. It has a wide input voltage range from 2.5 V to 18 V, and offers both high efficiency (up to 96%) and low quiescent current across all conditions. The TPS76518DR is a very compact and low cost solution which is capable of handling high output current up to 2 A. It also features peak current limit, over temperature and over voltage protection, making it ideal for a wide range of applications. This article will delve into the application field and working principle of the TPS76518DR.

Application Field

The TPS76518DR is an ideal solution for applications requiring low current consumption and high efficiency, such as portable and hand-held equipment, and other wearable or embedded systems. It is ideally suited to be used in mobile phones, wearables, USB Type-C wall-plugs, and point-of-sale equipment. In addition, the TPS76518DR is well suited for a variety of fixed-rail low power applications, such as white goods, industrial telecom and automotive power control. The TPS76518DR\'s intelligent power stage prevents high-temperature thermal runaway, and the anti-ringing control reduces EMI issues to ensure a more reliable operation, making it an ideal choice for applications where a high degree of system reliability is required.

Working Principle

The TPS76518DR is a step-down (buck) synchronous dc-to-dc converter, which integrates an advanced multi-phase current regulation loop with a low on-resistance smart power stage and charge pump voltage regulator. The internal current regulator works in conjunction with the external components to maximize efficiency and reduce current usage during standby. The TPS76518DR operates in continuous conduction mode (CCM) with either bursting or pulse-skipping control depending on the output current requirement. The device utilizes valley switching techniques to reduce switching losses and eliminate the need for a power stage bootstrap capacitor.

The TPS76518DR is designed with two stages for regulation: the primary regulation loop and the secondary regulation loop. The primary regulation loop uses peak current mode control and includes a built-in low on-resistance charge pump (CP) which, when combined with the buck converter inductor, provides a low-ripple output voltage. The secondary regulation loop uses valley current mode control and is used as an inner-loop low-frequency compensator to improve the system-level transient response.

The internal power stage of the TPS76518DR includes high and low side external NMOS and PMOS devices with a VGS voltage range of 600 mV to 1200 mV, allowing the device to handle loads up to 2 A. It also features automatic deadtime control to prevent shoot-through and excessive ringing. In addition, the TPS76518DR is designed with over-temperature and over-voltage protection to ensure safe operation.

The TPS76518DR is an ideal choice for applications requiring a high level of efficiency and reliability. The device is capable of handling up to 2 A of output current, and its two-stage regulation loop provides superior transient response. The device also features protection against over-temperature and over-voltage, and offers low power consumption and automatic dead-time control. With its extensive feature set, the TPS76518DR is an ideal solution for a wide range of low power applications.

The specific data is subject to PDF, and the above content is for reference