Title :
Operating Limitation of Buck Power Supplies Feeding DDR Memories -Source-Sink-Mode
Author :
Orabi, Mohamed ; Ghahary, Ali ; Lotfi, Ashraf
Author_Institution :
South Valley Univ., Aswan
Abstract :
This paper highlights an important design feature for power supply used in DDR memories applications. As, the power has to alternate in source and sink current mode, the converter operating conditions change. The input parasitic inductance plays in an aggressive way to the lower FET voltage (switch-node voltage). The analysis, limitation of load current that converter can sink is made clear in this paper. Experimental results match simulation and theory.
Keywords :
computer power supplies; DDR memory applications; buck power supply; double data rate memory; Buck converters; FETs; Inductance; Inductors; Memory management; Power supplies; Stress; Switches; Switching converters; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2007. PESC 2007. IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-0654-8
Electronic_ISBN :
0275-9306
DOI :
10.1109/PESC.2007.4342014
