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Title: Power converter using near-load output capacitance, direct inductor contact, and/or remote current sense

An apparatus includes a first circuit board including first components including a load, and a second circuit board including second components including switching power devices and an output inductor. Ground and output voltage contacts between the circuit boards are made through soldered or connectorized interfaces. Certain components on the first circuit board and certain components, including the output inductor, on the second circuit board act as a DC-DC voltage converter for the load. An output capacitance for the conversion is on the first circuit board with no board-to-board interface between the output capacitance and the load. The inductance of the board-to-board interface functions as part of the output inductor's inductance and not as a parasitic inductance. Sense components for sensing current through the output inductor are located on the first circuit board. Parasitic inductance of the board-to-board interface has less effect on a sense signal provided to a controller.
Inventors:
; ; ; ; ;
Issue Date:
OSTI Identifier:
1410510
Assignee:
International Business Machines Corporation (Armonk, NY) OSTI
Patent Number(s):
9,831,783
Application Number:
14/983,700
Contract Number:
B604142
Resource Relation:
Patent File Date: 2015 Dec 30
Research Org:
International Business Machines Corporation, Armonk, NY (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 24 POWER TRANSMISSION AND DISTRIBUTION

Works referenced in this record:

Switching Loss Analysis Considering Parasitic Loop Inductance With Current Source Drivers for Buck Converters
journal, July 2011
  • Zhang, Zhiliang; Fu, Jizhen; Liu, Yan-Fei
  • IEEE Transactions on Power Electronics, Vol. 26, Issue 7, p. 1815-1819
  • DOI: 10.1109/TPEL.2010.2096476

Parasitic inductance effect on switching losses for a high frequency Dc-Dc converter
conference, February 2008
  • Meade, Thomas; O'Sullivan, Dara; Foley, Raymond
  • Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE
  • DOI: 10.1109/APEC.2008.4522692