US 11,817,779 B2
Power transfer over an isolated capacitive barrier with controlled current
Ashish Kumar, Santa Clara, CA (US); Haoquan Zhang, Cambridge, MA (US); and Yogesh Kumar Ramadass, San Jose, CA (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Oct. 3, 2022, as Appl. No. 17/958,989.
Application 17/958,989 is a division of application No. 17/138,660, filed on Dec. 30, 2020, granted, now 11,463,000.
Claims priority of provisional application 63/000,210, filed on Mar. 26, 2020.
Prior Publication US 2023/0028100 A1, Jan. 26, 2023
Int. Cl. H02M 3/07 (2006.01); G01D 11/00 (2006.01); H03M 1/12 (2006.01); H02J 50/05 (2016.01)
CPC H02M 3/07 (2013.01) [G01D 11/00 (2013.01); H02J 50/05 (2016.02); H03M 1/12 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A sensor transmitter comprising:
a primary side bridge coupled between a power input and a first ground terminal, the primary side bridge having first switching terminals;
a secondary side bridge coupled between a power output and a second ground terminal, the secondary side bridge having second switching terminals, the secondary side bridge configured to be capacitively coupled to the primary side bridge via the first switching terminals and the second switching terminals; and
an analog front end having a sensor interface, a power terminal, and a reference terminal, the power terminal coupled to the power output, and the reference terminal coupled to the second ground, terminal.