Texas Instruments TPS62733EVM-726

Overview

TPS62733EVM-726 from Texas Instruments is an evaluation module designed to demonstrate and validate the TPS62733 stepdown converter IC in ultralow-power wireless systems. It supports fixed 2.3-V output, delivers up to 100 mA continuous current, operates from 1.9 V to 3.9 V input, and features automatic bypass mode with ~30-nA quiescent current for RF transceiver power management.

For engineers reviewing the TPS62733EVM-726 datasheet, TPS62733EVM-726 test setup, TPS62733EVM-726 application interface, or TPS62733EVM-726 compatibility with TI sub-1-GHz/2.4-GHz RF transceivers, this EVM enables rapid validation of buck-to-bypass transition, load transient response, PFM/PWM efficiency behavior, and STAT pin signaling under real-world low-power system conditions.

Technical Context

The TPS62733EVM-726 implements a complete reference design for the TPS62733 synchronous stepdown converter, including 2.2-µH inductor (LQM21PN2R2NGC), 22-µF output capacitor (GRM31CR61C226ME15L), and 2.2-µF input capacitors (GRM155R60J225ME15D). It provides direct access to VIN, VOUT, ON/BYP, and STAT pins via test points and headers.

Operation modes are controlled via JP1: "ON" position enables switching regulation; "Bypass" position grounds ON/BYP to force dc conduction through the internal 2-Ω FET. The board includes a 1-MΩ pullup on ON/BYP (to VIN) and a 10-kΩ pullup on STAT (to VOUT), matching typical host-system interfacing requirements while enabling standalone evaluation.

Key Specifications

Availability

TPS62733EVM-726 is available at Aetrix Electronics and suitable for ultralow-power wireless sensor development, RF transceiver power validation, and battery-operated IoT node prototyping requiring stable component supply and documented test methodology.

Supply support for TPS62733EVM-726 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 company specializing in analog, embedded processing, and wireless connectivity solutions, with leadership in low-power power management and RF technologies.

The TPS62733EVM-726 belongs to TI's ultralow-power DC/DC evaluation platform family, engineered specifically to accelerate development of battery-powered wireless applications using TI's sub-1-GHz and 2.4-GHz RF transceivers.

FAQ

What is the purpose of the TPS62733EVM-726?

The TPS62733EVM-726 is an evaluation module that demonstrates the operation and performance of the TPS62733 stepdown converter IC. It enables engineers to verify key behaviors-including buck regulation, automatic and manual bypass mode transitions, STAT pin signaling, and load transient response-under realistic input voltage and load conditions. The TPS62733EVM-726 is not a production-ready power supply but a validated reference design for rapid feasibility testing.

How does the TPS62733EVM-726 enter bypass mode?

The TPS62733EVM-726 enters bypass mode either automatically when the input voltage drops to the bypass threshold (a few millivolts above the 2.3-V regulated output), or manually by moving the JP1 shunt to the "Bypass" position, which grounds the ON/BYP pin. In bypass mode, the internal 2-Ω FET connects VIN directly to VOUT, reducing quiescent current to ~30 nA. The STAT pin goes high-impedance and is pulled to VOUT by R1 (10 kΩ).

Can the TPS62733EVM-726 be used with other ICs besides the TPS62733?

No-the TPS62733EVM-726 is specifically laid out and calibrated for the TPS62733DRY IC with 2.3-V fixed output. While the closely related TPS62730EVM-726 shares identical board layout and bill of materials except for U1 (TPS62730DRY, 2.1-V output), the TPS62733EVM-726 is not intended for use with other converters. Component values-including feedback network and compensation-are optimized for the TPS62733's internal reference and control loop.

What power source is required to operate the TPS62733EVM-726?

The TPS62733EVM-726 requires an adjustable DC power supply set between 1.8 V and 4 V, current-limited to ≥150 mA. Per the User's Guide, a 3.3-V, 150-mA-limited supply is recommended for standard evaluation. Input is connected via J1 (Vin), and grounding is made through J3 (GND). The board includes no onboard regulation or protection circuitry-external supply must meet TPS62733's absolute maximum ratings.

Does the TPS62733EVM-726 support hot-plug startup and load transients?

Yes-the TPS62733EVM-726 fully supports hot-plug startup and dynamic load steps, as verified in Figures 12–14 of the SLVU455A User's Guide. It demonstrates clean start-up without overshoot when input power is applied mid-operation, and maintains stable regulation during 50-mA ↔ 100-mA load transients with minimal undershoot/overshoot. These capabilities confirm suitability for intermittent RF burst transmission in battery-constrained devices using the TPS62733.