Texas Instruments TPS63050YFFT

Overview

TPS63050YFFT from Texas Instruments is a synchronous buck-boost DC-DC converter with adjustable output voltage, 2.5–5.5 V input range, 500 mA continuous output current in boost mode, 1 A switch current rating, and 2.5 MHz fixed switching frequency. It operates in seamless buck/boost transition mode and supports programmable soft-start and average input current limiting for battery-powered portable electronics.

For engineers reviewing the TPS63050YFFT datasheet, TPS63050YFFT pinout, TPS63050YFFT application, or TPS63050YFFT equivalent, key selection criteria include its DSBGA-12 (1.56 mm × 1.16 mm) package, 0.8 V feedback reference, <65 µA quiescent current, and PFM/PWM mode control - all critical for low-power, space-constrained designs requiring stable 3.3 V or adjustable rail generation from single-cell Li-ion or multi-cell alkaline sources.

Technical Context

The TPS63050YFFT implements average current-mode control using four internal N-channel MOSFETs, enabling true buck or boost operation depending on VIN vs VOUT - never all four switches active simultaneously. Its seamless mode transition avoids output glitches during input voltage crossing near VOUT.

It features dual-mode operation: forced PWM (2.5 MHz fixed frequency) or automatic PFM/PWM with load-dependent switching, achieving >90% efficiency in boost and >95% in buck at typical loads. Input current limiting is set via ILIM0/ILIM1 logic inputs, and soft-start is controlled by external capacitor on SS pin with 3.2 µA charging current.

Key Specifications

Pinout & Package

TPS63050YFFT uses a 12-pin DSBGA (YFF) package with 0.4 mm pitch and nominal body size 1.56 mm × 1.16 mm. The package is optimized for low thermal resistance (R_θJA = 89.9°C/W) and minimal board area in ultra-compact portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS63050YFFT, TPS63051YFFT offers identical performance in a pin-compatible fixed-output variant, while MP2155GQZ-P trades programmability and advanced protection for lower IQ and simpler implementation - making each suitable for distinct trade-offs in size, flexibility, and feature depth.

Availability

TPS63050YFFT is available at Aetrix Electronics and suitable for smartphone power management, wearable sensor hubs, industrial handheld terminals, smart meter backup supplies, and portable medical devices requiring stable component supply across long production lifecycles.

Supply support for TPS63050YFFT 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 battery-aware power architecture.

The TPS6305x product line was designed specifically for space- and power-constrained portable electronics needing seamless buck-boost regulation from single- or dual-cell batteries - emphasizing low IQ, small solution size, and robust protection.

FAQ

What is the maximum output current capability of the TPS63050YFFT in boost mode?

The TPS63050YFFT delivers up to 500 mA continuous output current in boost mode when VIN ≥ 2.5 V and VOUT = 3.3 V. This is limited by thermal design and inductor saturation; actual achievable current depends on PCB layout, ambient temperature, and input/output voltage differential. The internal switches are rated for 1 A peak, but average input current is programmable via ILIM0/ILIM1 pins to manage inrush and thermal stress.

Does the TPS63050YFFT require an external feedback resistor network?

Yes, the TPS63050YFFT requires an external resistor divider connected to the FB pin to set the output voltage, as it features an adjustable 0.8 V reference. For example, to achieve 3.3 V output, use R1 = 316 kΩ and R2 = 100 kΩ. In contrast, the pin-compatible TPS63051YFFT has an internal 3.3 V reference and does not require external resistors - FB must be shorted to VOUT.

How does the PFM/PWM pin affect efficiency and output ripple in the TPS63050YFFT?

When the PFM/PWM pin is low, the TPS63050YFFT enters automatic PFM/PWM mode, reducing switching frequency at light loads to maintain >85% efficiency with <65 µA quiescent current - but increases output ripple to ~30–50 mV_PP. When high, it forces fixed 2.5 MHz PWM operation, lowering ripple to <10 mV_PP at the expense of slightly higher light-load IQ (~100 µA). This trade-off is configurable per system requirements.

Can the TPS63050YFFT operate with input voltages below 2.5 V?

No, the TPS63050YFFT has a specified minimum input voltage of 2.5 V per datasheet Recommended Operating Conditions. Attempting operation below this threshold may trigger undervoltage lockout (UVLO) with 1.7 V threshold and 200 mV hysteresis, causing intermittent enable/disable cycling. For sub-2.5 V inputs, consider TI's TPS63802 or alternative ultra-low-VIN buck-boost converters.

What thermal considerations apply to the TPS63050YFFT in its YFF (DSBGA) package?

The TPS63050YFFT in YFF package has R_θJA = 89.9°C/W and R_θJB = 43.9°C/W. To maintain TJ ≤ 125°C at full 500 mA boost load, ensure ≥400 mm² of 1-oz copper connected to the thermal pad, use ≥4 thermal vias (0.3 mm diameter), and avoid enclosing the IC in sealed enclosures. Thermal shutdown activates at 140°C with 20°C hysteresis, providing robust overtemperature protection without latch-off.