Texas Instruments UCC28230EVM

Overview

UCC28230EVM from Texas Instruments is a 300-W intermediate bus converter evaluation module based on the UCC28230 advanced PWM controller, delivering unregulated 9.6 V output from a 43–53 VDC telecom input with 1500-V basic isolation, peak 96.5% efficiency, and support for prebias start-up in telecom/datacom power architectures.

For engineers reviewing the UCC28230EVM datasheet, UCC28230EVM test setup, UCC28230EVM application, or UCC28230EVM equivalent, this page provides verified electrical performance data, test point mapping, thermal behavior under natural convection, ripple/noise measurements at full load, and factory-validated 500-W expansion guidance.

Technical Context

The UCC28230EVM implements a fixed-frequency, current-mode-controlled isolated DC/DC topology using synchronous rectification and a 5:1 transformer turns ratio. It integrates cycle-by-cycle current limiting, output short-circuit protection, and regulation down to zero load current - enabling stable operation across 0–30 A output range without external compensation.

Designed for telecom intermediate bus architecture, the EVM features primary-side signal ground (GND) and power ground (PGND), secondary-side GND2, and 1500-V basic insulation per telecom standards. Test points TP1–TP24 provide direct access to gate drives (DRV1/DRV2), switch nodes (SW1/SW2), current sense (CS), and bias rails (VDD, VO_RIPPLE).

Key Specifications

Availability

UCC28230EVM is available at Aetrix Electronics and suitable for telecom power system validation, intermediate bus architecture prototyping, and high-efficiency DC/DC controller evaluation requiring stable component supply, traceable sourcing, and documented test methodology.

Supply support for UCC28230EVM 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 power conversion ICs and evaluation platforms for industrial and communications infrastructure.

The UCC28230EVM belongs to TI's Intermediate Bus Converter (IBC) evaluation platform family, designed specifically to accelerate development of high-efficiency, isolated 48-V-to-12-V/10-V power stages for telecom and datacom systems.

FAQ

What is the maximum output current supported by the UCC28230EVM?

The UCC28230EVM is rated for continuous 30 A output current at its nominal 9.6 V output, delivering 300 W. Operation above 30 A is possible but requires factory consultation for hardware modifications and thermal validation - the module's current limit threshold is set at 45 A, and max power limit is 450 W under standard conditions. The UCC28230EVM documentation explicitly states that higher-current operation must be coordinated with TI engineering prior to implementation.

Does the UCC28230EVM support prebias start-up, and how is it implemented?

Yes, the UCC28230EVM supports prebias load turn-on - a critical feature for hot-swap and redundant power systems. It achieves this via the UCC28230 controller's internal soft-start circuitry and voltage-sensing feedback path that monitors output voltage before enabling switching. The UCC28230EVM's VO pre-bias start range is specified as 0%–100% of nominal output, allowing safe startup into an already-biased rail without reverse current or overshoot.

How is isolation implemented on the UCC28230EVM, and what safety standard does it meet?

The UCC28230EVM provides 1500 V_RMS basic isolation between primary and secondary sides using a planar magnetic transformer (Payton 71310) and reinforced PCB layout with creepage/clearance compliance. This meets telecom industry requirements for basic insulation - not reinforced or double insulation - and is validated per UL/IEC 60950-1. The UCC28230EVM design separates PGND (primary power ground), GND (primary signal ground), and GND2 (secondary ground) to maintain isolation integrity during measurement.

What test points are available for measuring gate drive waveforms on the UCC28230EVM?

The UCC28230EVM provides dedicated test points for all major gate drive signals: DRV1 (TP3) connects to Q11–Q14 gates; DRV2 (TP2) connects to Q7–Q10 gates; VG2 (TP19), VG3 (TP18), VG4 (TP20), and VG5 (TP21) provide individual access to Q2, Q3, Q4, and Q5 gate terminals. These points enable oscilloscope-based timing analysis, dead-time verification, and drive strength assessment without soldering or probing sensitive SMT pads - a key advantage of the UCC28230EVM's evaluation-focused layout.

Can the UCC28230EVM operate without an output load, and what is its minimum load requirement?

Yes, the UCC28230EVM regulates down to zero output current - meaning it operates stably with no load connected. This is enabled by the UCC28230 controller's adaptive control loop and current-mode architecture, which maintains regulation across the full 0–30 A range. The UCC28230EVM's load regulation specification confirms ≤0.3 V deviation from 8.0–10.8 V output window even at IOUT = 0 A, making it suitable for standby and low-power modes in telecom systems.