TPS51511RHLR

Overview

The TPS51511RHLR is a synchronous switcher controller with an integrated 2A LDO, designed for GPU power applications. It operates within a 3V to 28V input voltage range and utilizes current-mode control with pulse width modulation. The device features dynamic voltage scaling, power good signaling, and synchronous rectification. It is housed in a 20-pin HVQCCN package (QFN) and supports an operating temperature range from -40°C to 85°C.

Feature Summary

• Integrates a dedicated 2A low-dropout regulator alongside the main switching controller
• Supports dynamic voltage scaling for efficient power management
• Includes built-in power good monitoring functionality

Applications

• GPU core voltage regulation
• High-performance processor power supplies
• Multi-phase synchronous buck converter designs

Procurement Notes

Verify the specific suffix RHLR against the manufacturer's official datasheet to confirm the exact package variant and tape-and-reel specifications. Ensure that the ordering information matches the required moisture sensitivity level and lead finish details provided in the component documentation. Cross-reference the part number with the latest product change notices to avoid discrepancies in manufacturing origin or assembly materials.

Selection Notes

Select this component when a combined solution for high-current switching and auxiliary low-noise LDO power is required. The integrated design reduces external component count compared to discrete solutions. Consider the 20-pin QFN footprint for thermal performance and board space constraints. Verify that the input voltage range aligns with the system's available power rails before finalizing the design.

Part Context

This part belongs to Texas Instruments' family of synchronous switcher controllers tailored for demanding graphics and computing loads. It differs from standard buck regulators by including an auxiliary LDO, simplifying bias supply generation. The device is distinct from the TPS51511G4 variant primarily through its specific packaging and trailing designation codes defined by the manufacturer.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.