US 12,136,513 B2
Miniaturized isolator modules for intrinsic safety applications
Mark Stewart Cantrell, Windham, NH (US); and Keith W. Bennett, Grand Isle, VT (US)
Assigned to Analog Devices, Inc., Wilmington, MA (US)
Filed by Analog Devices, Inc., Wilmington, MA (US)
Filed on Oct. 28, 2021, as Appl. No. 17/513,850.
Application 17/513,850 is a continuation of application No. PCT/US2020/030230, filed on Apr. 28, 2020.
Claims priority of provisional application 62/840,368, filed on Apr. 29, 2019.
Prior Publication US 2022/0051845 A1, Feb. 17, 2022
Int. Cl. H01F 27/32 (2006.01); H01F 27/24 (2006.01); H02H 9/00 (2006.01); H02H 9/04 (2006.01)
CPC H01F 27/32 (2013.01) [H01F 27/24 (2013.01); H02H 9/008 (2013.01); H02H 9/042 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An isolator module for intrinsic safety applications, comprising:
a substrate;
a first transformer integrated with the substrate, comprising:
a primary coil disposed on a first side of an isolation barrier; and
a secondary coil disposed on a second side of the isolation barrier;
a first silicon protection device on the substrate coupled between a first input of the isolator module and the primary coil of the first transformer;
a second transformer integrated with the substrate, comprising:
a primary coil disposed on the first side of the isolation barrier; and
a secondary coil disposed on a second side of the isolation barrier; and
a second silicon protection device on the substrate coupled between a second input of the isolator module and the primary coil of the second transformer.