TI UCC28630高度集成大功率反激电源解决方案
TI 公司的UCC28630是高度集成大功率反激电源控制器,连续导通模式(CCM)和不连续导通模式(DCM)工作,内置700V起动电流源,有源X电容放电功能,恒流(CC)模式限制,高栅极驱动电流,30mW系统待机功耗,主要用在笔记本电脑,游戏控制台个打印机的AC/DC适配器,工业,白家电,LCD监视器的开架开关电源,以及10W-65W的高效AC/DC电源.本文介绍了UCC28630主要特性, 功能框图以及评估板UCC28630EVM-572(9.5-V, 65-W笔记本电脑适配器)主要特性,电路图,材料清单和PCB元件布局图.
The UCC28630 device is a highly-integrated, primary-side-regulated (PSR) flyback controller. The device supports magnetically-sensed output voltage regulation via the transformer bias winding. This feature eliminates the need for a secondary-side reference, error amplifier and opto-isolator. The device employs an advanced internal control algorithm that offers accurate static output voltage regulation against line and load. The fixedpoint, magnetic-sampling scheme allows operation in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM). Additionally, the device achieves accurate constant-current (CC) control of the output current limit using only primary-side, current sensing. Uniquely, this CC function operates seamlessly as the operating mode changes between DCM and CCM operation.
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