TPS53647RTAT

Special Purpose Regulators Overview

The TPS53647RTAT is a four-phase D-CAP+ step-down buck controller manufactured by Texas Instruments. It operates with an input voltage range of 4.5 V to 17 V and supports output voltages from 0.5 V to 2.5 V in 5 mV increments via eight-bit selection. The device delivers up to 240 A of output current with a switching frequency adjustable between 300 kHz and 1 MHz. It features built-in non-volatile memory (NVM) and a PMBus interface, housed in a WQFN-40 package.

Special Purpose Regulators Feature Summary

• Integrates D-CAP+ control architecture with under-shoot and over-shoot suppression for rapid transient response
• Includes built-in non-volatile memory (NVM) and PMBus interface for configuration and monitoring
• Supports dynamic phase shedding and novel phase-interleaving strategies to enhance efficiency at light loads

Special Purpose Regulators Applications

• High-current multi-phase power delivery systems
• Server and storage subsystems requiring precise voltage regulation
• Graphics processing unit (GPU) power stages
• Central processing unit (CPU) core voltage regulation modules

Special Purpose Regulators Procurement Notes

Verify the specific suffix RTAT against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with NexFET power stages such as CSD95372BQ5MC. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement to prevent handling damage during assembly.

Special Purpose Regulators Selection Notes

Select this component for applications demanding high current density and fast transient response without external compensation networks. The integrated NVM simplifies design iterations by storing configuration data. Ensure the selected NexFET pair matches the controller's drive capabilities. Verify that the required output voltage falls within the 0.5 V to 2.5 V programmable range supported by the eight-bit selection feature.

Special Purpose Regulators Part Context

This part belongs to the TPS536xx series of multi-phase buck controllers designed for high-performance computing. It utilizes the proprietary D-CAP+ control mode to eliminate the need for error amplifier compensation components. The series is optimized for driving low-RDS(on) MOSFETs to achieve high efficiency across varying load conditions.

Special Purpose Regulators Replacement Considerations

Consult official substitution guides for compatible multi-phase buck controllers. Verify pinout compatibility and control algorithm differences before replacing existing designs.