TI UCC28780 65W USB Type－C PD AC－DC适配器参考设计TIDA-01622
TI公司的UCC28780是高频有源钳位反激控制器,具有自适应控制的全部和部分零电压开关(ZVS)的初级FET,外接Si或GaN FET的可编时序,开关频率高达1MHz,可编程自适应突发控制和待机模式可提高轻负载效率,具有低输出波纹和减轻可听见噪音.主要用在笔记本电脑,平板电脑,TV,机顶盒和打印机的高密度AC/DC适配器,USB供电,直接和快速移动充电器,AC/DC或DC/DC辅助电源.本文介绍了UCC28780主要特性,功能框图和典型应用电路图以及65W USB Type-C PD AC/DC适配器参考设计TIDA-01622主要特性,电路图和材料清单.
UCC28780 is a high-frequency active-clamp flybackcontroller that enables high-density AC-to-DC powersupplies that comply with stringent global efficiencystandards such as DoE Level VI and EU CoC V5Tier-2. User programmable advanced control lawfeatures allow performance to be optimized for bothSilicon (Si) and Gallium Nitride (GaN) power FETs.
Direct operation with switching devices that combinedriver and GaN FETs is further enhanced with logiclevelgate signals and enable outputs.
Zero voltage switching (ZVS) is achieved over a wideoperating range with advanced auto-tuningtechniques, adaptive dead-time optimization, andvariable switching frequency control law. Usingadaptive multimode control that changes theoperation based on input and output conditions,UCC28780 enables high efficiency while mitigating.
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