US 12,443,259 B2
Remote switch synchronization for pulse power and fault managed power (FMP) applications
Douglas Paul Arduini, San Ramon, CA (US); Sung Kee Baek, San Ramon, CA (US); Ruqi Li, Fremont, CA (US); Joel Richard Goergen, Soulsbyville, CA (US); Chad M. Jones, Doylestown, OH (US); and Jason DeWayne Potterf, Austin, TX (US)
Assigned to CISCO TECHNOLOGY, INC., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Nov. 23, 2022, as Appl. No. 17/993,323.
Prior Publication US 2024/0168533 A1, May 23, 2024
Int. Cl. G06F 1/30 (2006.01); G06F 1/32 (2019.01); G06F 1/3206 (2019.01); G06F 1/3296 (2019.01)
CPC G06F 1/30 (2013.01) [G06F 1/3206 (2013.01); G06F 1/3296 (2013.01)] 32 Claims
OG exemplary drawing
 
1. A method to remotely control a switch device at a remote receiving end of an electrical circuit in synchronization with a pulse power switch device at a source end of the electrical circuit, the method comprising:
detecting a pulse power waveform at the remote receiving end of the electrical circuit, the pulse power waveform including alternating on-time intervals and off-time intervals;
detecting synchronization transients in the pulse power waveform for synchronizing operation of the switch device at the remote receiving end, the synchronization transients comprising positive going transitions having a voltage change rate greater than a threshold in the pulse power waveform that create a switch control pulse to turn on a load current with the switch device at the remote receiving end in synchronization with the on-time intervals of the pulse power waveform, resulting in noise and/or spurious pulses being added to the pulse power waveform;
applying blanking pulses at the remote receiving end of the electrical circuit, wherein the blanking pulses having a timing created by the synchronization transients and a duration to blank the noise and/or spurious pulses in the pulse power waveform; and
applying synchronization pulses, derived from the synchronization transients, at the remote receiving end of the electrical circuit to control operation of the switch device at the remote receiving end.