UCC35131EVM-118 Evaluation Module

Introduction

The Texas Instruments UCC35131EVM-118 is an evaluation module for the UCC35131-Q1 isolated bias-supply device. It is intended to help engineers assess an isolated DC/DC supply approach for powering SiC and IGBT gate drivers in automotive and industrial designs.

The board combines isolated bias-power generation with a compact evaluation platform for examining regulation, protection behavior, enable control, and power-good signaling. Its support for up to 2 W of bias power is relevant where isolated gate-driver rails are required without adding a larger auxiliary supply stage.

What it does

The UCC35131EVM-118 converts a 5.5 V to 20 V input into a regulated 15 V isolated output. It is specified for up to 133 mA output current and provides isolation greater than 5 kV RMS.

The module is designed around the UCC35131-Q1 and demonstrates an isolated bias supply for gate-driver use. An open-drain power-good signal is available for monitoring output status, while the ENA pin provides logic enable and ON/OFF control.

Integrated protection functions include undervoltage lockout, overvoltage lockout, short-circuit protection, output overvoltage protection, output undervoltage protection, and thermal shutdown. The stated operating-temperature range is −40 °C to +125 °C, and the underlying device is qualified for automotive applications under AEC-Q100.

Applications

Potential evaluation and development uses include:

• Isolated bias rails for SiC gate-driver circuits
• Isolated bias rails for IGBT gate-driver circuits
• Automotive power-electronics prototypes requiring a 15 V isolated gate-driver supply
• Industrial inverter, converter, or motor-drive development where isolated gate-driver bias power is needed
• Testing protection, enable, and power-good behavior in an isolated auxiliary-supply design

Design considerations

The module accepts a relatively broad 5.5 V to 20 V input range but produces a fixed 15 V output, so system input and gate-driver bias requirements should be checked before using the evaluation results in a final design.

Its 133 mA output-current rating and 2 W maximum bias-power capability define the available load budget. Designers evaluating multiple gate drivers or additional circuitry should account for the total bias load within these limits.

The board’s isolation rating, high-temperature operating range, and integrated fault protections are useful considerations for automotive and industrial environments. The open-drain power-good output and ENA control also require appropriate interface design in the host system, including the logic arrangement needed for status monitoring and enable control.

Availability and further information

The source/distributor link on this page provides further product information, and the datasheet link provides the associated Texas Instruments documentation for the UCC35131EVM-118 and its evaluation setup.