Texas Instruments TPS62872QWRXSRQ1

Overview

TPS62872QWRXSRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive synchronous step-down DC/DC converter delivering up to 12A continuous output current, supporting 2.7V–6V input, ±1% output voltage accuracy with differential remote sensing, and I²C interface for dynamic voltage scaling in infotainment and ADAS power rails.

For engineers reviewing the TPS62872QWRXSRQ1 datasheet, TPS62872QWRXSRQ1 pinout, TPS62872QWRXSRQ1 application, or TPS62872QWRXSRQ1 equivalent, key selection factors include its stackable 12A capability, resistor-selectable 1.5–3.0MHz switching frequency, thermal warning/thermal shutdown thresholds (150°C/170°C), and VQFN-FCRLF (RXS) 2.55mm × 3.55mm wettable-flank package.

Technical Context

The TPS62872QWRXSRQ1 implements a fixed-frequency DCS-Control topology optimized for fast load transients and low output voltage ripple. It supports both power-save mode for peak efficiency and forced-PWM mode for deterministic timing and minimal ripple-enabling adaptive operation across processor core and memory supply profiles.

Differential remote sensing (VOSNS/GOSNS) enables precise point-of-load regulation under varying PCB IR drops, while stackable architecture allows parallel configuration of identical-current devices to scale output current or distribute thermal load-each device maintains independent compensation via shared COMP node and synchronized switching via SYNC_OUT/MODE/SYNC daisy-chain.

Key Specifications

Pinout & Package

TPS62872QWRXSRQ1 uses the RXS package: 16-pin VQFN-FCRLF (2.55mm × 3.55mm × 1mm) with exposed thermal pad soldered to GND for optimal thermal performance (R_θJB = 7.7°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Compared with TPS62873QWRXSRQ1, the TPS62872QWRXSRQ1 offers tighter thermal margin at 12A loads and lower component count for nominal applications; versus MP2964GQ-0000-Z, it delivers superior regulation accuracy via differential sensing and greater system-level flexibility through stackability and programmable frequency.

Availability

TPS62872QWRXSRQ1 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS domain controllers, and FPGA-based central compute modules requiring stable component supply, AEC-Q100 qualification, and functional safety documentation support.

Supply support for TPS62872QWRXSRQ1 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 automotive-grade power management ICs with decades of automotive qualification expertise.

The TPS6287x-Q1 product line was designed specifically for high-current, safety-critical automotive power rails-including processor cores, memory interfaces, and sensor fusion domains-where fast transient response, thermal resilience, and programmable telemetry are mandatory.

FAQ

What is the maximum continuous output current supported by the TPS62872QWRXSRQ1?

The TPS62872QWRXSRQ1 supports up to 12A continuous output current under recommended operating conditions (T_J ≤ 150°C, proper layout, and adequate PCB copper). Its internal high-side and low-side MOSFETs have typical R_DS(on) values of 7mΩ and 4.5mΩ respectively, enabling high efficiency at this rating. Derating is required above 85°C ambient per thermal metrics in the datasheet.

Does the TPS62872QWRXSRQ1 support differential remote sensing, and how is it implemented?

Yes, the TPS62872QWRXSRQ1 supports differential remote sensing via dedicated VOSNS and GOSNS pins. These inputs measure output voltage directly at the load, rejecting voltage drop across PCB traces and connectors. The device achieves better than ±1% DC accuracy across temperature and load by comparing this sensed voltage against its internal 0.4V reference-critical for sub-1V core supplies.

Can multiple TPS62872QWRXSRQ1 devices be stacked, and what are the requirements?

Yes, the TPS62872QWRXSRQ1 supports stacking for increased current or thermal distribution. All stacked devices must share the same current rating (e.g., all TPS62872QWRXSRQ1), interconnect COMP, EN, PG (primary only), and SYNC_OUT → MODE/SYNC daisy-chain. VOSNS/GOSNS must be routed to the same load point. No external controller is needed-the devices self-synchronize and balance current via inherent DCS-Control dynamics.

What I²C capabilities does the TPS62872QWRXSRQ1 provide, and what is its maximum speed?

The TPS62872QWRXSRQ1 features a fully compliant I²C interface supporting Standard (100kHz), Fast (400kHz), and Fast Mode Plus (1MHz) speeds. It enables real-time readback of output voltage, junction temperature, and fault flags (thermal warning, UVLO), plus dynamic voltage adjustment via register writes. The default I²C address is 0x42, determined by the VSEL configuration.

What package type and thermal characteristics define the TPS62872QWRXSRQ1?

The TPS62872QWRXSRQ1 uses the RXS package: a 16-pin VQFN-FCRLF (2.55mm × 3.55mm × 1mm) with wettable flanks and an exposed thermal pad. Its thermal metrics include R_θJA = 43.2°C/W (JEDEC) and R_θJB = 7.7°C/W, enabling efficient heat transfer to the PCB. The thermal pad must be soldered to a solid GND plane for optimal performance and reliability.