The UCC256302 is a fully featured LLC controller with integrated high-voltage gate driver. It has been designed for use in offline AC-DC or isolated DC-DC to provide a complete power system using a minimum of external components. The resulting power system is designed to meet the most stringent requirements for standby power without the need for a separate standby power converter.

UCC256302 includes an integrated, high voltage startup function which eliminates the need for an external bias supply, reducing BOM count and minimizing solution size. UCC256302 uses hybrid hysteretic control to provide best in class line and load transient response. The control makes the open loop transfer function a first order system so that it’s very easy to compensate.

UCC256302 provides a high efficient burst mode with consistent burst power level during each burst on cycle. The burst power level is programmable and adaptively changes with input voltage, making the optimization of efficiency very easy.

Select the appropriate LLC resonant controller for your design with UCC25630x Selection Guide

• Integrated High Voltage Startup
  • Eliminates Need for External Bias Supply
• Best-in-Class Transient Response
• Hybrid Hysteretic Control (HHC)
  • Best-in-Class Transient Response
  • Easy Compensation Design
• Optimized Low Power Features Enable 75 mW Standby Power Design with PFC on
  • Advanced Burst Mode Opto-Coupler Low Power Operation
  • Helps Enable Compliance to CoC Tier II Standard
• Fast Exit from Burst Mode
• Improved Capacitive Region Avoidance Scheme
• Adaptive Dead-Time
• Internal High-Side Gate Drivers (0.6-A and 1.2-A Capability)
• Robust Soft Start with No Hard Switching
• Over Temperature, Output Over Voltage, Input Over and Under Voltage Protection with Three Levels of Over Current Protections
• Wide Operating Frequency Range (35 kHz to 1 MHz)
• Select the appropriate LLC resonant controller for your design with UCC25630x Selection GuideUCC25630x Selection Guide
• Create a Custom Design Using the UCC256302 With the WEBENCH? Power Designer

• Control mode
• Current
• Features
• LLC, HV Start-up, Hybrid Hysteretic Control, Light Load Efficiency, Thermal Shutdown
• Operating temperature range (C)
• -40 to 125
• Supply voltage (Max) (V)
• 30
• Supply voltage (Min) (V)
• 13
• Topology
• Half-Bridge, Resonant LLC
• Rating
• Catalog

UCC256302的完整型号有：UCC25630-2DDBR、UCC25630-2DDBT，以下是这些产品的关键参数及官网采购报价：

UCC25630-2DDBR，工作温度：-40 to 125，封装：SOIC (DDB)-14，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC25630-2DDBR的批量USD价格：.604（1000+）

UCC25630-2DDBT，工作温度：-40 to 125，封装：SOIC (DDB)-14，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC25630-2DDBT的批量USD价格：.715（1000+）

UCC25630-1EVM-291 — UCC256301 LLC 评估模块

UCC25630-1EVM-291 是具有 LLC 控制器 UCC256301 的 LLC 谐振半桥直流/直流功率转换器 EVM。UCC25630-1EVM-291 支持 340Vdc 至 410Vdc 的直流线路输入、85 VAC 至 264 VAC 交流输入电压，可输出标称电压 12VDC，其中满载输出功率为 120W 或最大输出电流为 10A。

UCC256301 SIMPLIS Model

This single-stage LLC converter reference design illustrates how to convert AC input voltage (100-120 Vac and 200-240 Vac) to isolated ±42-V DC output with the UCC256302 resonant controller. The design has a regulated ±42-V output that can handle up to 6 A of continuous output current (...)

PMP21683 — 48V/550W 谐振转换器参考设计

This resonant converter reference design takes a 380-V to 420-V DC input and generates a 48-V up to 550-W output. With the UCC256302 driver-integrated resonant converter controller and UCC24624, a two-channel synchronous rectifier (SR) driver, this design can achieve 97.95% peak efficiency.

PMP30522 — 110VAC 至 38V/2A 单级 LLC 谐振转换器参考设计

This reference design is a half bridge LLC resonant converter, typically combined to PFC front end. It works directly from mains (100 VAC - 127 VAC) and supplies 38 V at 2 A. The burst mode feature keeps the curve flat in a range of 86% - 94% when load is varied between 1% and 100%.

PMP21582 — 260-W 离线多输出 LLC-SRC 参考设计

此参考设计使用 UCC256302 LLC 谐振控制器来提供美国线路交流输入至 30V、250W 输出和 13.8V、11W 输出转换。低厚度设计，最大高度为 1 英寸。采用 120V 交流输入时，此设计的峰值效率达到 94%。

PMP21000 — 单级交流/直流无辅助 LLC 谐振转换器参考设计

This reference design provides a 12-V/100-W output from either 120-Vac or 230-Vac input with a single LLC resonant converter stage. The bill of materials (BOM) cost of this design is highly optimized with the single-stage structure and the use of UCC256302 LLC resonant controller. High voltage (...)

PMP40281 — LLC 谐振转换器控制卡参考设计

此参考设计是 LLC 转换器的控制卡。它集成了用来控制 LLC 转换器的所有基本功能，包括高电压启动、X 电容放电和功率 FET 驱动器。通过采用先进的突发模式，即使 PFC 开启时，它也能帮助 LLC 转换器实现超低待机功耗。此外，PMP40281 极其灵活，便于用户评估，并且适用于 LLC 电源板的任何额定功率。通过简单连接，即可使用现有功率级轻松设置基准测试。