Texas Instruments TPS53627RSMT

Overview

TPS53627RSMT from Texas Instruments is a 2-phase, VR13 SVID-compliant synchronous buck controller for CPU VCORE and DDR memory power delivery. It operates from 4.5 V to 28 V input, delivers 0.5 V–2.3 V output with 10-mV DAC resolution, supports 300 kHz–1 MHz switching frequency, and integrates AutoBalance™ phase balancing and D-CAP+™ transient control.

For engineers reviewing the TPS53627RSMT datasheet, TPS53627RSMT pinout, TPS53627RSMT application, or TPS53627RSMT equivalent, key selection considerations include VR13 SVID interface compliance, driverless operation with discrete or DrMOS power stages, programmable OSR/USR levels, and thermal performance in the 4 mm × 4 mm VQFN package.

Technical Context

The TPS53627RSMT implements D-CAP+™ control architecture with overlapping pulse support, enabling fast load-transient response without external compensation. It supports both CCM and DCM modes, selectable via pin strapping or SVID command, and includes 8-level programmable current limit and ON-pulse extension for transient boost.

This controller integrates full VR13 I/O signaling-VR_READY (PGOOD), ALERT, and VR_HOT-with SVID address programmability (00h–07h) and adjustable VOUT slew rate up to 20 mV/µs. Its driverless design eliminates gate drivers, reducing BOM count and enabling high-frequency operation with TI NexFET™ Power Stages.

Key Specifications

Pinout & Package

The TPS53627RSMT is housed in a thermally enhanced 32-pin VQFN (RSM) package measuring 4.00 mm × 4.00 mm with an exposed thermal pad. The package is RoHS-compliant, MSL Level-2, and requires soldering of the thermal pad for proper thermal and mechanical performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-phase VR controller applications.

Compared with TPS53627RSMT, the TPS53632GRTAR offers higher phase scalability and integrated drivers at the cost of larger footprint, while the ISL95857IRZ-T provides basic VR13 compliance but lacks D-CAP+™ transient advantages and AutoBalance™-making TPS53627RSMT optimal for space-constrained, high-dV/dt applications.

Availability

TPS53627RSMT is available at Aetrix Electronics and suitable for server CPU VCORE power, DDR memory VDDQ regulation, and AI accelerator core supply requiring stable component supply, consistent parametric performance, and long-term lifecycle support.

Supply support for TPS53627RSMT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and power management technologies, with leadership in high-reliability power conversion ICs for computing infrastructure.

The TPS53627RSMT belongs to TI's VR13-compliant multi-phase controller product line, engineered specifically for high-efficiency, fast-transient CPU and memory power delivery in datacenter and edge AI platforms.

FAQ

What is the primary function of the TPS53627RSMT in a server power system?

The TPS53627RSMT serves as a 2-phase VR13 SVID-compliant synchronous buck controller that regulates VCORE voltage for Intel-compatible CPUs and DDR memory VDDQ rails. It manages phase current balancing, interprets SVID commands for dynamic voltage scaling, and delivers fast transient response using D-CAP+™ architecture. Its driverless design interfaces directly with external power stages like the CSD9537x series, making the TPS53627RSMT ideal for compact, high-efficiency server VR solutions.

Does the TPS53627RSMT require external gate drivers when used with discrete MOSFETs?

No, the TPS53627RSMT is a driverless controller and provides PWM outputs (PWM1/PWM2) designed to directly drive the gates of high-side MOSFETs in discrete or integrated power stage configurations. When paired with TI's CSD9537x Power Stages or compatible DrMOS devices, no external gate drivers are needed-reducing component count, PCB area, and propagation delay. This driverless capability is integral to the TPS53627RSMT's architecture and confirmed in its datasheet functional description.

What is the significance of AutoBalance™ in the TPS53627RSMT?

AutoBalance™ is a patented TI feature in the TPS53627RSMT that actively monitors and equalizes current between its two output phases using differential current sense inputs (CSP1/CSN1, CSP2/CSN2). It eliminates the need for external current-sharing circuits or manual tuning, ensuring balanced thermal loading and improved reliability. In practice, AutoBalance™ maintains phase current matching within ±3% across load and temperature ranges-directly enhancing the TPS53627RSMT's suitability for high-power-density server and AI accelerator applications.

Can the TPS53627RSMT operate in single-phase mode?

Yes, the TPS53627RSMT supports configurable 1- or 2-phase operation via pin strapping or SVID command. In single-phase mode, it retains full functionality-including D-CAP+™ control, OSR/USR, and VR13 signaling-while optimizing efficiency for lower-current rails such as auxiliary SoC domains or low-power memory interfaces. This flexibility allows the same TPS53627RSMT design to scale across multiple voltage rails without hardware change, simplifying BOM management and validation effort.

What package type and thermal characteristics does the TPS53627RSMT use?

The TPS53627RSMT uses a 32-pin VQFN (RSM) package measuring 4.00 mm × 4.00 mm with an exposed thermal pad. It is rated for operation from –40°C to +105°C ambient, and the thermal pad must be soldered to a PCB copper plane for effective heat dissipation. The package's low profile (<1 mm height) and optimized thermal resistance enable high-power density deployment in space-constrained server DIMMs and AI module carriers-key attributes verified in TI's SLUSCX9 datasheet for the TPS53627RSMT.