RE: PD power start up
My straw poll reply:
Choice #2. Nice, simple definition. Meets our original intent, I think.
Peter Schwartz
Applications Engineer
Micrel Semiconductor
Phone: 408.435.2460
FAX: 408.456.0490
peter.schwartz@xxxxxxxxxx
-----Original Message-----
From: Dieter Knollman [SMTP:djhk@xxxxxxxxxxx]
Sent: Saturday, March 24, 2001 10:21
To: Yair Darshan
Cc: stds-802-3-pwrviamdi@xxxxxxxx
Subject: PD power start up
Yair,
I believe we have two choices.
Choice 1: Define a special start up case for the PD.
In this state the PD is allowed to violate steady
state requirements.
The PD may drop the line voltage to zero.
The PD may draw any current level.
The PSE will supply current at a level about 1.5
times the steady state value.
The time for the start up state is limited to X ms.
Choice 2: The PD meets steady state requirements.
In order to receive power the PD input voltage is
>30 volts and the PD current is >10ma and <350ma.
Some violations are allowed for Y ms.
Can we have a straw poll?
Dieter