US 12,009,740 B2
Power conversion system with enhanced protection for gaseous corrosive atmospheres
Garron Morris, Whitefish Bay, WI (US); Garrett Wolff, Sussex, WI (US); Craig Devroy, New Berlin, WI (US); James Carter, Wauwatosa, WI (US); and Christopher Genthe, West Bend, WI (US)
Assigned to ROCKWELL AUTOMATION TECHNOLOGIES, INC., Mayfield Heights, OH (US)
Filed by ROCKWELL AUTOMATION TECHNOLOGIES, INC., Mayfield Heights, OH (US)
Filed on Apr. 19, 2023, as Appl. No. 18/303,259.
Application 18/303,259 is a continuation of application No. 17/020,738, filed on Sep. 14, 2020, granted, now 11,784,554.
Prior Publication US 2024/0136913 A1, Apr. 25, 2024
Int. Cl. H02M 1/32 (2007.01); H01L 23/00 (2006.01); H02M 7/217 (2006.01); H05K 5/00 (2006.01)
CPC H02M 1/32 (2013.01) [H01L 23/564 (2013.01); H02M 7/217 (2013.01); H05K 5/0095 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power conversion system comprising:
a rectifier comprising at least one rectifier switch module for rectifying AC input power;
a DC bus connected to the rectifier;
wherein said at least one rectifier switch module comprises:
a base plate;
a housing connected to the base plate and defining an interior space that contains at least one semiconductor switch; and
at least one printed circuit board assembly including a plurality of electronic components, a plurality of vias, and a plurality of test points, wherein said at least one printed circuit board comprises a protective coating comprising at least one of: (i) a conformal coating that covers at least said electronic components, said plurality of vias, and said plurality of test points; and (ii) a nanocoating that covers at least said electronic components, said plurality of vias, and said plurality of test points.