Texas Instruments TPS61032PWPR

Overview

TPS61032PWPR from Texas Instruments is a synchronous boost DC-DC converter IC designed for battery-powered portable systems. It delivers up to 1000 mA output current at 5 V from input voltages as low as 1.8 V, features 96% peak efficiency, integrated 4-A switch, and adjustable output voltage via external feedback divider.

For engineers reviewing the TPS61032PWPR datasheet, TPS61032PWPR pinout, TPS61032PWPR application, or TPS61032PWPR equivalent, key selection considerations include its 600-kHz fixed-frequency PWM operation, Power Save mode for light-load efficiency, low-battery comparator (LBI/LBO), load disconnect during shutdown, and QFN-16 package thermal performance.

Technical Context

The TPS61032PWPR implements a fixed-frequency, multiple feedforward PWM controller with synchronous rectification using integrated N- and P-channel MOSFETs. Input voltage, output voltage, and NMOS switch voltage drop are directly monitored to dynamically adjust duty cycle-bypassing slow error-amplifier loop latency for fast transient response.

It integrates a low-battery detector with 500-mV threshold on LBI and open-drain LBO output, antiringing circuitry to suppress SW-node oscillation in discontinuous conduction mode, and undervoltage lockout (≈1.6 V) to prevent malfunction during deep discharge.

Key Specifications

Pinout & Package

TPS61032PWPR is housed in a thermally enhanced 4 mm × 4 mm QFN-16 package with exposed PowerPAD™ (pin 16), requiring solder connection to PGND for optimal thermal dissipation and electrical performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS61031PWPR, the TPS61032PWPR offers design flexibility via adjustable output but requires two external resistors; compared with TPS61291DRVR, it delivers higher output current and better thermal performance in QFN-16, at the cost of larger size and lower switching frequency.

Availability

TPS61032PWPR is available at Aetrix Electronics and suitable for portable medical devices, industrial handheld scanners, and wireless sensor nodes requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TPS61032PWPR 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.

The TPS6103x product line was engineered specifically for space-constrained, battery-powered portable electronics needing high-efficiency step-up conversion from low-input sources like single-cell Li-ion or multi-cell alkaline batteries.

FAQ

What is the maximum output current capability of the TPS61032PWPR?

The TPS61032PWPR delivers up to 1000 mA at 5 V output when supplied from ≥2.4 V input. At lower inputs (e.g., 1.8 V), maximum output current decreases per the device's current-limit architecture and thermal constraints. The internal 4-A switch enables robust peak-current handling during transient loads, but continuous output is limited by package thermal resistance (R_θJA = 35.5°C/W in QFN) and PCB layout.

Does the TPS61032PWPR support adjustable output voltage?

Yes, the TPS61032PWPR supports adjustable output voltage via the FB pin, which regulates to a precise 500-mV internal reference. Using an external resistor divider (e.g., R3 = 1 MΩ, R4 = 100 kΩ), outputs from 1.8 V to 5.5 V can be set. This differs from the fixed-output TPS61030 (3.3 V) and TPS61031 (5 V) variants in the same family.

How does the low-battery detection function work on the TPS61032PWPR?

The TPS61032PWPR uses the LBI pin to monitor a scaled-down battery voltage via an external resistor divider. When the voltage at LBI falls to 500 mV (with 10 mV hysteresis), the open-drain LBO pin pulls low to signal low battery. This function is only active when EN = high; during shutdown, LBO is high-impedance. LBI must never be left floating and should be tied to GND if unused.

Can the TPS61032PWPR operate without external synchronization?

Yes, the TPS61032PWPR operates autonomously at its nominal 600-kHz switching frequency. The SYNC pin defaults to Power Save mode when pulled low, fixed-frequency mode when pulled high, and accepts external clock signals (500–700 kHz, 30–70% duty) for EMI reduction. No external clock is required for basic operation - all timing is generated internally.

What thermal considerations apply to the TPS61032PWPR in QFN-16 package?

The TPS61032PWPR in PWP (QFN-16) package has R_θJA = 35.5°C/W and R_θJB = 12.9°C/W. Effective thermal management requires soldering the exposed PowerPAD™ (pin 16) to a large PGND copper area. Thermal performance degrades significantly if the PowerPAD™ is unconnected or undersized. Junction temperature must remain ≤125°C under continuous load; derating is recommended above 85°C ambient.