Texas Instruments TPS63070RNMT

Overview

TPS63070RNMT from Texas Instruments is a synchronous buck-boost DC/DC converter IC designed for single-inductor, wide-input applications where VIN may be above or below VOUT. It delivers up to 2 A output current in both buck and boost modes, supports 2.0 V–16 V input and 2.5 V–9 V adjustable output, achieves up to 95% efficiency, and features automatic mode transition - used in portable medical devices, dual-cell Li-ion power rails, and industrial metering.

For engineers reviewing the TPS63070RNMT datasheet, TPS63070RNMT pinout, TPS63070RNMT application, or TPS63070RNMT equivalent, key selection considerations include its 2.5 mm × 3 mm QFN package, ±1% PWM-mode output accuracy, 2.4 MHz fixed-frequency operation with synchronization capability, integrated power good (PG) signal, and precise enable threshold enabling user-defined UVLO and sequencing control.

Technical Context

The TPS63070RNMT implements an average current-mode control architecture using four internal N-channel MOSFETs, enabling seamless buck-to-boost transition without discontinuous conduction or dead-time gaps. Its dual-mode operation maintains high efficiency across full input range by dynamically selecting active switch pairs: buck path (L1–PGND–VIN–VOUT) or boost path (VIN–L2–VOUT–PGND), with RMS current minimized via optimized gate drive timing.

It integrates dedicated circuitry for VSEL/FB2-based dual-output-voltage selection, PS/SYNC-controlled PFM/PWM mode switching or external clock synchronization, and robust protection including thermal shutdown (160°C), input/output overvoltage lockout, and short-circuit detection via back-gate diode conduction below 1.2 V output.

Key Specifications

Pinout & Package

TPS63070RNMT is housed in a thermally enhanced 13-pin VQFN package (2.5 mm × 3 mm, 0.5 mm pitch) with exposed thermal pad (Pin 13 = PGND). The package supports high-power density layouts and requires controlled PCB copper pour under the die for optimal thermal performance (R_θJA = 63°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS63070RNMT, TPS630701RNMT offers lower BOM cost and simpler design for fixed 5 V use, while MAX20034ATC+T provides automotive qualification and higher current but sacrifices input voltage range and dynamic voltage selection - making TPS63070RNMT optimal for portable, wide-input, and multi-rail applications.

Availability

TPS63070RNMT is available at Aetrix Electronics and suitable for portable medical devices, industrial metering equipment, and ultra-mobile PC subsystems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TPS63070RNMT 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 decades of expertise in high-efficiency DC/DC conversion and battery-powered system design.

The TPS6307x product line was engineered specifically for space-constrained, wide-input portable electronics - delivering high efficiency, seamless buck-boost operation, and intelligent features like VSEL-based voltage scaling and integrated power good signaling.

FAQ

What is the maximum continuous output current supported by the TPS63070RNMT?

The TPS63070RNMT delivers up to 2 A continuous output current in both buck mode (when VIN ≥ 4.5 V) and boost mode (when VOUT ≥ 4.5 V), as specified in TI's SLVSC58B datasheet Rev B. This rating assumes proper thermal management using the 2.5 mm × 3 mm QFN package's exposed thermal pad and recommended PCB copper area.

Does the TPS63070RNMT support output voltage adjustment, and how is it implemented?

Yes, the TPS63070RNMT supports adjustable output voltage from 2.5 V to 9 V using an external resistor divider connected to the FB pin. Additionally, the VSEL and FB2 pins enable hardware-selectable dual output levels - applying logic high to VSEL pulls FB2 to GND, changing the feedback ratio and shifting VOUT to a second preset value without firmware involvement.

How does the TPS63070RNMT handle transitions between buck and boost operation?

The TPS63070RNMT uses an average current-mode controller with four internal N-channel MOSFETs to enable automatic, seamless buck-to-boost transition. When VIN crosses VOUT, the device dynamically selects the optimal switch pair - ensuring continuous regulation without output glitch, dropout, or mode-control latency - critical for battery-powered systems with varying input voltage.

What protection features are integrated into the TPS63070RNMT?

The TPS63070RNMT includes thermal shutdown (160°C with 20°C hysteresis), input/output overvoltage protection, short-circuit protection (using back-gate diodes below 1.2 V), and undervoltage lockout (1.7–1.95 V with 525–850 mV hysteresis). These features safeguard both the IC and downstream circuitry during fault conditions without requiring external components.

Can the TPS63070RNMT be synchronized to an external clock, and what is the supported frequency range?

Yes, the TPS63070RNMT supports external clock synchronization via the PS/SYNC pin. It accepts square-wave signals from 2.1 MHz to 2.8 MHz, allowing coordination with other switching regulators to minimize beat frequencies and EMI in multi-rail systems. When the external clock is removed, the device automatically reverts to internal 2.4 MHz operation or PFM mode based on load conditions.