Texas Instruments TPS62134BRGTR

Overview

TPS62134BRGTR from Texas Instruments is a synchronous step-down DC-DC converter optimized for Intel Skylake platform VCC(IO) rail applications, featuring DCS-Control™ architecture, 3.2-A output current capability, 3-V to 17-V input range, and 0.95-V fixed output voltage with LPM support.

For engineers reviewing the TPS62134BRGTR datasheet, TPS62134BRGTR pinout, TPS62134BRGTR application, or TPS62134BRGTR equivalent, key selection criteria include low-power mode logic compatibility, remote sense (FBS) implementation, power-good timing behavior, and thermal performance in 3-mm × 3-mm VQFN packages.

Technical Context

The TPS62134BRGTR implements DCS-Control™ topology combining voltage-mode and hysteretic control for fast transient response and seamless PWM-to-power-save mode transition. It supports dynamic output voltage adjustment via VID0/VID1 pins and low-power mode activation via LPM pin, enabling system-level power state coordination.

Its internal 1-MHz nominal switching frequency varies with input voltage to maintain efficiency across duty cycles. The device integrates undervoltage lockout (2.7-V threshold), thermal shutdown (160°C), short-circuit protection with reduced current limit (1.6 A), and single-ended remote sensing through FBS pin for load-point regulation.

Key Specifications

Pinout & Package

TPS62134BRGTR is housed in a thermally enhanced 3-mm × 3-mm VQFN-16 package with exposed thermal pad, optimized for high-current POL applications requiring compact layout and efficient heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS62134ARGBR and TPS62134DRGTR, the TPS62134BRGTR uniquely satisfies Intel Skylake VCC(IO) rail requirements with its 0.95-V nominal output, LPM-driven zero-volt disable, and PG blanking behavior-making it the only validated option for new VCC(IO) designs.

Availability

TPS62134BRGTR is available at Aetrix Electronics and suitable for Intel Skylake platform designs, solid-state disk drive power systems, and 12-V intermediate bus conversion requiring stable component supply, long-term lifecycle support, and automotive-grade reliability screening.

Supply support for TPS62134BRGTR 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 technologies, with over 50 years of innovation in high-reliability power conversion solutions.

The TPS62134x product line was engineered specifically for Intel Skylake platform voltage regulation, delivering tightly controlled output accuracy, fast transient response, and system-aware power-state coordination via LPM and VID interfaces.

FAQ

What output voltage does the TPS62134BRGTR deliver in standard operation?

The TPS62134BRGTR delivers a fixed 0.95-V output when configured with VID0 = 0, VID1 = 1, and LPM = 1 - matching the Intel Skylake VCC(IO) rail specification. This setting is factory-configured for the 'B' variant and verified in TI's SLVSC20E datasheet Table 1. The TPS62134BRGTR maintains ±1% accuracy in PWM mode across temperature and line/load variations.

How does the TPS62134BRGTR implement low-power mode (LPM)?

The TPS62134BRGTR asserts LPM = 0 to disable the output and force VOUT to 0 V, enabling deep system sleep states while retaining rail isolation. During LPM, the PG pin enters high-impedance state and remains blanked for 500 µs upon exit to prevent false sequencing signals. This behavior is explicitly defined for the TPS62134B variant in the datasheet's Table 1 and Section 8.3.5.

Does the TPS62134BRGTR support remote sensing, and how is it implemented?

Yes, the TPS62134BRGTR supports single-ended remote sensing via the FBS pin, which connects directly to the load's power input node. This compensates for voltage drop across PCB traces, improving load regulation to within ±0.5%. The FBS trace must be routed away from noise sources and referenced to AGND/PGND per Section 8.3.7 of the TPS62134BRGTR datasheet.

What is the thermal performance of the TPS62134BRGTR in its VQFN-16 package?

The TPS62134BRGTR in the 3-mm × 3-mm VQFN-16 package has a junction-to-ambient thermal resistance (RθJA) of 44.2°C/W and junction-to-board (RθJB) of 16.6°C/W. Its thermal shutdown activates at 160°C with 20°C hysteresis, and the exposed thermal pad must be soldered to AGND/PGND for effective heat transfer - confirmed in Section 7.4 and Figure 11 of the TPS62134BRGTR datasheet.

Can the TPS62134BRGTR be used in place of the TPS62134ARGBR without hardware changes?

No - although both share the same VQFN-16 package and pinout, the TPS62134BRGTR and TPS62134ARGBR differ in output voltage (0.95 V vs. 0.85 V) and LPM behavior (0-V disable vs. no LPM-driven disable). Substituting them requires verifying VID pin logic, adjusting feedback network if used, and validating PG timing and LPM exit behavior per Intel platform requirements.