计算工具
UCC25661X-CALC — UCC25661X Design Calculator
The purpose of this tool is to aid in the design of the main power stage components of a LLC Resonant Converter along with component calculations using UCC25661x controller.
UCC25661
- 50kHz to 750kHz full-load switching frequency
- IPPC control enables wide input and output LLC (WLLC) operation
- Enhanced light load management:
- High frequency pulse skip for improved light load efficiency
- Low frequency burst for low standby power
- Audible frequency range skip for reduced audible noise
- Integrated PFC on/off control signal to help further reduce standby power
- Internal resonant-capacitor voltage synthesizer for enhanced signal reliability and high startup frequency support
- Automatic capacitive region avoidance
- Adaptive soft start with minimized inrush current
- Integrated high-voltage startup (UCC256610, UCC256611, UCC256612, and UCC256614)
- X-capacitor discharge (UCC256610, UCC256611 and UCC256614).
- Integrated +0.6/-1.2A gate drive
- Complete protections
- 50ns Over-Current Protection (OCP) - cycle-by-cycle current limit
- Over-Voltage Protection (OVP), internal and external Over-Temperature Protection (OTP)
- Input and VCCP UVLO with internal 19V VCCP Clamp
- SOIC-14 package with removed pins for high-voltage clearance
The UCC25661x family is a high-frequency LLC controller implementing input-power proportional control (IPPC) scheme, along with an enhanced light-load management and multiple protection features.
IPPC widens the control range of the LLC converter simplifies the design of wide input and output-voltage range applications such as LED drivers, battery chargers. It can even work without a PFC for non-universal input applications.
The UCC25661x family has enhanced light-load management that improves the efficiency while minimizing audible noise. To minimize standby power, the UCC25661x family can directly disable the PFC controller when operating in burst mode.
The automatic capacitive region avoidance scheme along with the adaptive soft start with reverse recovery avoidance scheme ensures that the device can never work in a mode where there is a potential to damage the FETs. This scheme makes the controller ideal for working with a pre-biased load.
The UCC25661x family comes with robust protection to help you design a reliable power supply. The UCC25661x family has options supporting high-voltage startup, X-capacitor (X-cap) discharge, OVP response, and extended Gain range. See details in the Device Comparison Table.
技术文档
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查看全部 5 | 类型 | 标题 | 下载最新的英语版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 数据表 | UCC25661x Family 750kHz Wide VIN /VOUT Range LLC Controller Optimized for Light-Load Efficiency 数据表 | PDF | HTML | 2025年 5月 9日 | ||
| 技术文章 | LLC 토폴로지를 이용해 자동차 설계자가 전력 밀도와 안정성을 강화 하도록 지원 | PDF | HTML | 2025年 5月 19日 | |||
| 技术文章 | 使汽车设计人员能够通过 LLC 拓扑提高功率密度和可靠性 | PDF | HTML | 英语版 | PDF | HTML | 2025年 5月 19日 | |
| 技术文章 | 幫助汽車設計師藉由 LLC 拓撲結構提升功率密度與系統可靠性 | PDF | HTML | 2025年 5月 19日 | |||
| EVM 用户指南 | UCC25661x Half Bridge LLC Evaluation Module | PDF | HTML | 2025年 5月 8日 |
设计和开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
评估板
UCC25661EVM-128 — UCC25661 评估模块
UCC25661 评估模块 (EVM) 可协助设计人员评估 UCC25661x LLC 谐振控制器（16 引脚 SOIC 封装，移除了用于高压间隙的引脚）的运行情况和性能。此评估模块演示了 UCC25661x 如何控制 LLC 谐振半桥直流/直流转换器，以在负载和输入电压范围内实现高效率。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOIC (DDB) | 14 | Ultra Librarian |
订购和质量
包含信息：
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
包含信息：
- 制造厂地点
- 封装厂地点