Parts UCC256404ADDBR

TIUCC256404ADDBR

Name: UCC256404ADDBR
Brand: Texas Instruments

Texas Instruments

Power Supply Controller Resonant Converter Controller 14-SOIC

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Overview

The UCC256404ADDBR is a high-performance LLC resonant controller designed for high-efficiency DC/DC conversion up to 600V. It features Hybrid Hysteretic Control (HHC) to provide best-in-class transient response and an integrated high-voltage gate driver capable of 1.2A sink current. The device is optimized for low-power standby requirements with an integrated burst mode algorithm and X-capacitor discharge function.

Why Choose This Part

It eliminates the need for external high-voltage startup circuits and X-capacitor discharge resistors, reducing BOM count and standby power. The robust adaptive dead-time control and Zero-Current Switching (ZCS) avoidance scheme prevent power stage failures during extreme load transients or startup conditions.

Applications

AC-DC Power Supplies

High-efficiency resonant converters for server, telecom, and industrial power bricks.

LED Lighting Drivers

Used in high-power architectural or industrial lighting stages requiring high power factor and efficiency.

Electric Vehicle Charging

Suitable for onboard chargers and DC/DC conversion stages within EV power electronics.

Consumer Electronics

Powering large-format displays and high-end audio systems where EMI and efficiency are critical.

Key Specifications

Applications Resonant Converter Controller

Mounting Type Surface Mount

Package / Case 16-SOIC (0.154", 3.90mm Width), 14 Leads

Voltage - Input 600V

Current - Supply 2.2 mA

Voltage - Supply 13V ~ 26V

Operating Temperature -40degC ~ 125degC (TA)

Supplier Device Package 14-SOIC

Getting Started

Evaluation can be performed using the UCC256404EVM-020 development board, which demonstrates a 120W LLC design. Designers should use TI's Power Stage Designer tool or Excel-based calculation spreadsheets to tune the LLC tank parameters and HHC compensation network for specific power levels.