The UCC25600 high performance, resonant mode controller is designed for dc-to-dc applications using resonant topologies, especially the LLC half-bridge resonant converter. This highly integrated controller implements frequency modulation control and complete system functions in only an 8-pin package. Switching to the UCC25600 will greatly simplify the system design and layout, and improve time to market, all at a price point lower than competitive 16-pin device offerings.

The internal oscillator supports the switching frequencies from 40 kHz to 350 kHz. This high-accuracy oscillator realizes the minimum switching frequency limiting with 4% tolerance, allowing the designer to avoid over-design of the power stage and, thus, further reducing overall system cost. The programmable dead time enables zero-voltage switching with minimum magnetizing current. This maximizes system efficiency across a variety of applications. The programmable soft-start timer maximizes design flexibility demanded by the varied requirements of end equipment using a half-bridge topology. By incorporating a 0.4-A source and 0.8-A sink driving capability, a low cost, reliable gate driver transformer is a real option.

The UCC25600 delivers complete system protection functions including overcurrent, UVLO, bias supply OVP, and overtemperature protection.

• Variable Switching Frequency Control
• Programmable Minimum Switching Frequency With 4% Accuracy (3% Accuracy at Temperature Range: –20°C to 105°C)
• Programmable Maximum Switching Frequency
• Programmable Dead Time for Best Efficiency
• Programmable Soft-Start Time
• Easy ON and OFF Control
• Overcurrent Protection
• Overtemperature Protection
• Bias Voltage UVLO and Overvoltage Protection
• Integrated Gate Driver With 0.4-A Source and 0.8- A Sink Capability
• Operating Temperature Range: –40°C to 125°C
• SOIC 8-Pin Package

• Control mode
• Voltage
• Features
• LLC, Variable switching frequency control, programmable switching frequency, Programmable soft-start, No high voltage gate driver
• Operating temperature range (C)
• -40 to 125
• Supply voltage (Max) (V)
• 18
• Supply voltage (Min) (V)
• 11
• Topology
• Half-Bridge, Resonant LLC
• Rating
• Catalog

UCC25600的完整型号有：UCC25600D、UCC25600DR，以下是这些产品的关键参数及官网采购报价：

UCC25600D，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：75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UCC25600D的批量USD价格：.388（1000+）

UCC25600DR，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UCC25600DR的批量USD价格：.323（1000+）

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UCC25600 评估模块 EVM (HPA341) 是一个 300W LLC 谐振半桥接转换器，凭借主次之间 AC-DC 离线应用的强化隔离，在最大负荷功率为 300W 的情况下提供额定为 12V 的稳压输出电压，它从 390V 的直流电源获取电源。该 EVM 使用了集成先进内置高效升压功能与高级保护功能的 UCC25600 谐振半桥接转换器，为 LLC 谐振半桥接转换器应用提供经济高效的解决方案。二次侧使用两个 HPA410 子卡，并使用二极管产生整流。在使用 EVM 时必须采取相应的预防措施。当 EVM 通电后，它上面将产生大于 390V 的高电压电平和高于 70C (...)

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UCC25600 设计工具是一个基于 Excel 电子表格的计算表，旨在帮助用户使用 UCC25600 来设计 LLC 半桥接转换器。该工具可帮助设计功率级并对 IC 设置参数进行编程。功率级设计包括谐振回路、主要和次要开关以及磁元。IC 设置参数则包括编程开关频率、软启动时间和死机时间等，它还包括电流感应和过流保护。