Texas Instruments TPS62142RGTR

Overview

TPS62142RGTR from Texas Instruments is a 3-V to 17-V, 2-A synchronous step-down DC-DC converter in a 3-mm × 3-mm VQFN-16 package, featuring DCS-Control™ topology, 3.3-V fixed output voltage, power-good (PG) open-drain output, and seamless PWM-to-power-save mode transition. It delivers high efficiency across load range for POL supplies in embedded systems and solid-state drives.

For engineers reviewing the TPS62142RGTR datasheet, TPS62142RGTR pinout, TPS62142RGTR application, or TPS62142RGTR equivalent, key selection criteria include its 3.3-V fixed output, 17-µA quiescent current in power-save mode, 2.5-MHz/1.25-MHz selectable switching frequency, thermal shutdown at 160°C, and compatibility with low-ESR ceramic output capacitors.

Technical Context

The TPS62142RGTR implements DCS-Control™ topology-combining fast transient response via direct output-voltage sensing with stable DC regulation through an internal compensated voltage feedback loop. Its dual-mode operation (PWM at medium/heavy loads, power-save at light loads) enables seamless transitions without output voltage disturbance.

It supports 100% duty-cycle operation down to VIN ≈ VOUT + (IOUT × RDS(on)_HS + IOUT × R_L), enabling extended battery runtime. The device integrates undervoltage lockout (2.7 V ±0.1 V), overtemperature protection (160°C trip), short-circuit current limiting (2.45–3.5 A typical), and programmable soft-start via external capacitor on SS/TR pin.

Key Specifications

Pinout & Package

TPS62142RGTR is housed in a 16-pin VQFN (RGT) package measuring 3.00 mm × 3.00 mm with exposed thermal pad. The package requires soldering of the thermal pad to AGND/PGND for thermal performance and mechanical reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS62142RGTR, TPS62141RGTR provides identical performance at 1.8 V but cannot replace 3.3-V rails, while TPS62150ARGTR trades fixed-output simplicity for adjustable regulation-requiring external components but enabling reuse across varying VOUT requirements.

Availability

TPS62142RGTR is available at Aetrix Electronics and suitable for solid-state drives, embedded systems, and mobile computing applications requiring stable component supply, long-term manufacturability, and consistent electrical performance across production batches.

Supply support for TPS62142RGTR 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 automotive-grade reliability.

The TPS6214x product line was designed specifically for high-density point-of-load applications demanding ultra-small footprints, fast transient response, and seamless light-load efficiency-targeting SSDs, portable computing, and industrial edge devices.

FAQ

What is the output voltage of the TPS62142RGTR and how is it set?

The TPS62142RGTR provides a fixed 3.3-V output voltage determined by an internal resistor divider. Unlike adjustable versions, no external feedback resistors are required-simplifying layout and reducing BOM count. The device achieves ±1.8% initial accuracy at the FB pin, and the DEF pin allows dynamic scaling to +5% (3.465 V) if margining is needed. This fixed output makes TPS62142RGTR ideal for standardized 3.3-V logic rails in SSDs and embedded controllers.

Does the TPS62142RGTR support power sequencing with other rails?

Yes, the TPS62142RGTR supports robust power sequencing via its EN (enable) and PG (power-good) pins. EN accepts active-high logic to control startup timing, while PG provides an open-drain signal that goes high-impedance when VOUT reaches 92–98% of nominal-enabling cascaded enable signals or processor reset assertion. When paired with other TI PMICs or sequencers, TPS62142RGTR ensures deterministic startup order critical for FPGAs and multi-core SoCs.

What thermal considerations apply to the TPS62142RGTR in a 3×3 mm QFN package?

The TPS62142RGTR uses a 16-pin VQFN (RGT) package with an exposed thermal pad that must be soldered to AGND/PGND and a solid copper pour for effective heat dissipation. Its junction-to-board thermal resistance (RθJB) is 17.4°C/W, and maximum operating junction temperature is 125°C. To maintain reliability at 2-A load, ensure ≥200 mm² of 2-oz copper connected to the thermal pad, minimize trace length between PGND pins and the pad, and avoid thermal isolation islands beneath the IC.

How does the TPS62142RGTR handle light-load efficiency compared to traditional buck converters?

The TPS62142RGTR uses TI's DCS-Control™ architecture to enter power-save mode automatically below ~300 mA, reducing switching frequency linearly with load while maintaining regulation. This yields 17-µA typical quiescent current and >85% efficiency at 1-mA output-far exceeding conventional PWM-only buck converters. The seamless transition avoids output voltage glitches, making TPS62142RGTR suitable for always-on IoT nodes and battery-backed memory subsystems.

Is the TPS62142RGTR pin-compatible with other members of the TPS6214x family?

Yes, all TPS6214x variants-including TPS62140, TPS62141, TPS62142, TPS62143, and TPS62140A-are pin-compatible in the 3-mm × 3-mm VQFN-16 (RGT) package. They share identical pin functions, thermal pad layout, and PCB footprint. Differences are limited to output voltage (fixed 1.8 V, 3.3 V, or 5.0 V), PG logic (high-impedance vs. active-low), and internal feedback configuration-allowing drop-in replacement during design iteration or voltage optimization.