US 11,991,027 B2
Phase demodulation using pulse signal
Gustavo James Mehas, Mercer Island, WA (US); Giovanni Figliozzi, Zurich (CH); Xintian Shi, Zurich (CH); and Francesco Santoro, Zurich (CH)
Assigned to Renesas Electronics America Inc., Milpitas, CA (US)
Filed by Renesas Electronics America Inc., Milpitas, CA (US)
Filed on Feb. 23, 2022, as Appl. No. 17/678,175.
Prior Publication US 2023/0269117 A1, Aug. 24, 2023
Int. Cl. H03K 7/08 (2006.01); H02J 50/10 (2016.01); H03K 5/01 (2006.01); H03K 9/08 (2006.01); H04B 5/24 (2024.01); H04L 25/49 (2006.01)
CPC H04L 25/4902 (2013.01) [H02J 50/10 (2016.02); H03K 5/01 (2013.01); H04B 5/24 (2024.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a circuit configured to:
measure a voltage of a transmission coil of a wireless power transmitter;
determine a zero crossing time of the measured voltage;
generate, based on the zero crossing time of the measured voltage and a switch node voltage of the wireless power transmitter, a pulse signal comprising a plurality of pulses; and
send the pulse signal to a controller of the wireless power transmitter.