发明申请
US20080137759A1 NETWORK DEVICES WITH SOLID STATE TRANSFORMER AND CLASS AB OUTPUT STAGE FOR ACTIVE EMI SUPPRESSION AND TERMINATION OF OPEN-DRAIN TRANSMIT DRIVERS OF A PHYSICAL DEVICE
失效
具有固态变压器和AB类输出级的网络设备，用于主动EMI抑制和终止一个物理设备的开放式发射驱动器
- 专利标题： NETWORK DEVICES WITH SOLID STATE TRANSFORMER AND CLASS AB OUTPUT STAGE FOR ACTIVE EMI SUPPRESSION AND TERMINATION OF OPEN-DRAIN TRANSMIT DRIVERS OF A PHYSICAL DEVICE
- 专利标题（中）： 具有固态变压器和AB类输出级的网络设备，用于主动EMI抑制和终止一个物理设备的开放式发射驱动器
-
申请号： US11682823申请日： 2007-03-06
-
公开(公告)号： US20080137759A1公开(公告)日： 2008-06-12
- 发明人: Jun Cai , Amit Gattani
- 申请人： Jun Cai , Amit Gattani
- 主分类号： H04L25/00
- IPC分类号： H04L25/00 ; H04J3/10
摘要：
Embodiments disclosed herein describe a network device including a class AB common mode suppression (CMS) circuit coupled in parallel between a line voltage source and a physical layer (PHY) device that provides active EMI suppression and Phy device termination. A network connector is coupled to provide the line voltage source to the class AB CMS circuit. The class AB CMS circuit provides current to the PHY device, terminates open-drain transmit drivers of the PHY device and suppresses common mode noise thereby minimizing electromagnetic interference. In other embodiments, the class AB CMS circuit is coupled in parallel between the network connector and a physical layer (PHY) device. The class AB CMS circuit suppresses common mode noise, and terminates open-drain transmit drivers of the PHY device, thereby minimizing electromagnetic interference.