TI UCD7138 340W数控LLC DC电源参考设计
TI公司的UCD7138是4A和6A单路MOSFET驱动器,集成了体二极管导通检测和报告,和UCD3138A数字PWM控制器一起可进行高挡同步整流(SR)控制.器件包括高速栅极驱动器,体二极管导通检测电路和导通延迟优化电路,非常适合于大功率高效绝缘转换器如LLC转换器,硬开关全桥转换器和数字电源控制应用.本文介绍了UCD7138主要特性,功能框图,半桥LLC应用框图以及340W数控LLC谐振半桥DC/DC电源转换参考设计主要特性和性能指标,电路图,材料清单和PCB元件布局图.
The UCD7138 device is a 4-A and 6-A single-channel MOSFET driver with body-diode conduction sensing and reporting and is a high performance driver that allows the Texas Instruments UCD3138A digital PWM controller to achieve advanced synchronous-rectification (SR) control. The device contains a high-speed gate driver, a body-diode conduction-sensing circuit, and a turnon delay optimization circuit. The device is suitable for high-power, high-efficiency isolated converter applications where SR dead-time optimization is desired.
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