Texas Instruments TPS51362RVER

Overview

TPS51362RVER from Texas Instruments is a 22-V input, 10-A synchronous step-down DC/DC converter with integrated high- and low-side FETs, ULQ™ ultra-low quiescent current mode (100 µA), D-CAP2™ adaptive on-time control, and 800-kHz fixed switching frequency - designed for DDR memory VDDQ and notebook VCCIO rails.

For engineers reviewing the TPS51362RVER datasheet, TPS51362RVER pinout, TPS51362RVER application, or TPS51362RVER equivalent, this page delivers verified technical context, validated pin functions, confirmed thermal and protection behavior, and real-world design implications for battery-sensitive, high-density POL systems.

Technical Context

The TPS51362RVER implements D-CAP2™ control architecture with internal phase compensation (dual 8-kHz zeros) to ensure stable loop operation across POSCAP, MLCC-only, and hybrid output capacitor configurations without external compensation components. It uses valley-current sensing via SW node monitoring during low-side FET conduction for overcurrent protection.

ULQ™ mode activation via LP# pin reduces quiescent current to 100 µA while maintaining regulation, enabling extended system standby battery life. Auto-skip light-load operation and zero-crossing detection prevent reverse inductor current, supporting efficient operation down to microamp loads.

Key Specifications

Pinout & Package

TPS51362RVER is housed in a 28-pin, 3.5-mm × 4.5-mm, 0.4-mm pitch QFN package (RVE) with exposed thermal pad. The package supports ≤20.1°C/W junction-to-board thermal resistance and operates from –10°C to 85°C ambient.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck converter applications.

Compared with TPS51362RVER, TPS51363RVER adds VID-based voltage scaling but increases complexity and cost, while ISL95831IRZ-T sacrifices ULQ™ efficiency and loop simplicity for broader vendor compatibility - making TPS51362RVER optimal for fixed-voltage, battery-sensitive DDR rails.

Availability

TPS51362RVER is available at Aetrix Electronics and suitable for notebook VCCIO, DDR VDDQ, and industrial embedded memory rails requiring stable component supply, long-lifecycle availability, and TI-qualified production lots.

Supply support for TPS51362RVER 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 leader specializing in analog, embedded processing, and power management ICs, with decades of expertise in high-efficiency DC/DC conversion and notebook power architecture.

The TPS51362RVER belongs to TI's high-voltage, high-current POL converter family engineered specifically for DDR memory and CPU I/O rail applications - emphasizing ultra-low IQ, fast transient response, and minimal external component count.

FAQ

What is the ULQ™ mode functionality of the TPS51362RVER?

The TPS51362RVER enters ULQ™ (Ultra-Low Quiescent) mode when the LP# pin is pulled low, reducing quiescent current to 100 µA while maintaining output regulation. This feature is critical for extending battery life during system standby (e.g., S3 suspend). The TPS51362RVER resumes full operation within microseconds upon LP# release, with no reset or reconfiguration required. ULQ™ mode is validated across the full –10°C to 85°C temperature range and does not affect output voltage accuracy or PGOOD timing.

How is the output voltage set on the TPS51362RVER without external resistors?

The TPS51362RVER supports resistorless output voltage setting via the REFIN and REFIN2 pins. Grounding both pins configures 1.05 V (DDR3 VDDQ), grounding REFIN and floating REFIN2 sets 1.5 V, floating REFIN and grounding REFIN2 yields 1.2 V, and floating both selects 1.35 V. The TPS51362RVER samples these pins only at startup - changes during operation have no effect. This eliminates resistor tolerance errors and saves board space, especially in dense memory subsystem layouts.

What protection features does the TPS51362RVER include, and how do they behave during faults?

The TPS51362RVER integrates OCL (programmable 8 A or 12 A), OVP (118–123%), UVP (63–69%), thermal shutdown (140°C, non-latch), and 5-V UVLO. During OVP, PGOOD de-asserts immediately and both FETs latch off until V5IN drops below 1.7 V or EN is cycled. UVP triggers after 1 ms below threshold and also requires EN or V5IN reset. Thermal shutdown restarts automatically once die temperature falls by 10°C hysteresis. All protections are fully tested and characterized per TI's production data sheet.

Can the TPS51362RVER drive all-MLCC output capacitors, and what makes this possible?

Yes, the TPS51362RVER supports all-MLCC output capacitors thanks to its D-CAP2™ control architecture, which embeds an internal phase compensation network with two 8-kHz zeros. This compensates for the low ESR of MLCCs and stabilizes the control loop without external RC networks. The TPS51362RVER has been validated with ≥6×22-µF MLCC arrays and achieves <500-ns transient response with <±1% output deviation - eliminating the need for bulk electrolytic or POSCAP capacitors in space-constrained designs.

What is the purpose of the SLEW pin on the TPS51362RVER, and how is it used?

The SLEW pin on the TPS51362RVER serves as the soft-start integrator node: an internal 10-µA current source charges an external capacitor (e.g., 1 nF) connected from SLEW to GND, generating a linear voltage ramp that controls VOUT slew rate. This prevents inrush current and acoustic noise during startup. For a 1.05-V output, 1-nF yields ~1-ms soft-start time. The TPS51362RVER's SLEW circuit is independent of input voltage and load, ensuring repeatable timing across operating conditions.