Texas Instruments UCC25230EVM-662

Overview

UCC25230EVM-662 from Texas Instruments is an evaluation module for a secondary-side controlled, half-bridge DC-to-DC converter targeting 48-V telecom applications. It integrates the UCC25230 (isolated Forward-Flyback/Flybuck™ controller with integrated high-side/low-side power switches) and UCC28250 (secondary-side PWM controller), delivering a regulated 3.3 V / 30 A output from 36–72 V DC input, with 91% peak efficiency and telecom-grade 1500 VDC isolation.

For engineers reviewing the UCC25230EVM-662 datasheet, UCC25230EVM-662 test setup, UCC25230EVM-662 application in telecom power supplies, or UCC25230EVM-662 alternative evaluation platforms, this EVM provides validated reference design, Bode plot characterization, pre-bias turn-on validation, and full-load efficiency data across line and load conditions - essential for rapid prototyping of isolated bias supplies in server, datacom, and FPGA power systems.

Technical Context

The UCC25230EVM-662 implements a symmetrical half-bridge topology with secondary-side control architecture, using the UCC28250 placed on the secondary side to regulate output voltage via optocoupler feedback. The UCC25230 operates as an isolated Flybuck™ controller with integrated MOSFETs, enabling self-biased operation without auxiliary windings.

It supports monotonic startup under pre-biased conditions up to 90%, features hiccup-mode over-current protection and non-latching over-voltage protection, and delivers stable 3.3 V regulation across 0–30 A load and 36–72 V input, verified with 200 LFM forced-air cooling per TI SLUU863.

Key Specifications

Availability

UCC25230EVM-662 is available at Aetrix Electronics and suitable for telecom module design, server power subsystem validation, and datacom bias supply development requiring stable component supply, documented thermal performance, and production-ready reference schematics.

Supply support for UCC25230EVM-662 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 power management technologies, with leadership in high-reliability power conversion solutions.

The UCC25230EVM-662 belongs to TI's high-efficiency isolated DC-DC evaluation platform family, designed specifically to accelerate development of secondary-side controlled telecom and datacom power supplies with integrated controllers and robust protection features.

FAQ

What is the primary function of the UCC25230EVM-662?

The UCC25230EVM-662 is an evaluation module that demonstrates a secondary-side controlled, symmetrical half-bridge DC-to-DC converter. It uses the UCC25230 (integrated Flybuck™ controller with MOSFETs) and UCC28250 (secondary-side PWM controller) to deliver a regulated 3.3 V / 30 A output from 36–72 V input. Its purpose is to validate performance, loop stability, and thermal behavior in telecom and datacom bias supply designs - not for end-product deployment.

Does the UCC25230EVM-662 require an external auxiliary power source?

No, the UCC25230EVM-662 operates in stand-alone mode without external auxiliary power. It starts directly from the 36–72 V telecom input and uses the UCC25230 to generate internal bias rails, including 9 V primary bias (TP3, TP12) and 8 V secondary bias (TP13), enabling full functionality during evaluation.

What are the key electrical performance metrics verified for the UCC25230EVM-662?

TI's SLUU863 User's Guide verifies: 3.30 V ±0.05 V output regulation across 0–30 A and 36–72 V input; 50 mVpp output ripple at full load; 91% peak efficiency at 48 V / 15 A; 200 kHz switching frequency; and 1500 VDC isolation. These metrics are measured with 200 LFM forced-air cooling and documented in Figures 3–11 of the guide.

Can the UCC25230EVM-662 be used with pre-biased outputs?

Yes, the UCC25230EVM-662 supports smooth, monotonic turn-on with up to 90% pre-biased output voltage (e.g., 3.0 V on a 3.3 V rail), as confirmed in Figures 7–9 of SLUU863. This capability is critical for hot-swap and multi-rail sequencing in server and telecom systems where downstream regulators may already be active.

What safety and compliance limitations apply to the UCC25230EVM-662?

The UCC25230EVM-662 is intended solely for engineering development, demonstration, or evaluation - not for consumer use. It is not certified to FCC Part 15, RoHS, WEEE, CE, UL, or EMC directives. Users must observe electrostatic precautions, limit input to 36–72 V, avoid exceeding 3.4 V output, and manage thermal exposure (some components exceed 60°C during operation).