Network devices with solid state transformer and class AB...

Details Network devices with solid state transformer and class AB... Network devices with solid state transformer and class AB...

2011-06-21

2011-06-21

Fureman, Jared J (Department: 2836)

Electrical transmission or interconnection systems

Anti-induction or coupling to other systems

Magnetic or electrostatic field control

C307S089000, C307S090000, C307S402000, C379S090010, C379S102040, C379S169000, C379S176000, C379S186000, C379S307000, C379S318000, C379S322000, C379S323000, C379S413000, C379S392010, C379S399010, C379S412000, C379S413020, C379S416000, C330S253000

Reexamination Certificate

active

07964993

ABSTRACT:
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.

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