[SI-LIST] Re: SPARTAN IIE Voltage regulator selection
- From: "Adam Barnes" <adam@xxxxxxxxxxxxxxxxxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Tue, 29 Oct 2002 22:57:32 -0000
I had some issues with a Linear Technology LTC1628 dual switcher on a
PowerPC board due to high startup currents, and they eventually admitted
seeing similar problems with Xilinx parts. I had to disable some of the
overcurrent protection features to work around this.
More recently I needed a 5V in, 3.3V + 1.6V out solution, and chose the
LTC1702A. Apparently this part was developed to resolve the "Xilinx
issue" on the LTC1702. The LTC1702A works very well for me, and its 2
phase approach to switching is good for noise and EMI.
- Adam Barnes www.varisys.co.uk
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Ismail B - CTD, Chennai.
Sent: 25 October 2002 12:54
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] SPARTAN IIE Voltage regulator selection
Hello there!
I want to know if anyone used SPARTAN IIE FPGA in any of their design.
It seems that the FPGA draws a high current during start up which appers
almost like a short circuit
I am in the process of selecting an appropriate Voltage regulator but
not sure how good
it will be. My worst fear is that once the Voltage regulator senses the
high current draw
it may shutdown. It will be of great help if anyone could provide the
part number/manfacturer of Voltage regulator used in their earlier
(working :) ) design.
Thanks,
Ismail
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