The SSAC board went out to Sunstone for fabrication and will arrive about Sept 6. This board contains two channels of RF sampling, Relay controller, and 50V, 50A FET switch. This all fits on a 2.35 x 2.8 inch board. The board uses the Arduino Shield interface.
The 50A potential current flows through some traces that do not have enough width if you believe design guidelines. 1 oz. Copper has about 500 microOhms per square, which dissipates 1.25 Watts per square at 50 Amps. Most of the connections are less than 1 square, but that just means they're small. This board, and the FET transistor will mount to SilPad thermally conductive sheet to conduct heat away from the board.
Hi Jeff,
ReplyDeleteI was thinking about same idea as you but I can see you already did it.
I wonder if you got some spare PCB or even a kit??
My plan is to control a LDMOS 1296 MHz amplifier running at 48vdc.
Thank you
73, Maximo
EA1DDO at Hotmail.com