US 12,249,903 B2
Switching technique using PWM for increasing switching efficiency
Alen Dahaki, Torrance, CA (US); Farzad Ahmadkhanlou, Torrance, CA (US); and Reza Sarhadi Nia, Torrance, CA (US)
Assigned to Power Switching LLC, , CA (US)
Appl. No. 18/021,114
Filed by Power Switching LLC, Torrance, CA (US)
PCT Filed Feb. 10, 2023, PCT No. PCT/US2023/062441
§ 371(c)(1), (2) Date Feb. 13, 2023,
PCT Pub. No. WO2023/158971, PCT Pub. Date Aug. 24, 2023.
Claims priority of provisional application 63/311,352, filed on Feb. 17, 2022.
Prior Publication US 2024/0266944 A1, Aug. 8, 2024
Int. Cl. H02M 1/088 (2006.01); H02M 7/217 (2006.01); H02M 7/5395 (2006.01); H03K 4/06 (2006.01)
CPC H02M 1/088 (2013.01) [H02M 7/217 (2013.01); H02M 7/5395 (2013.01); H03K 4/06 (2013.01)] 16 Claims
OG exemplary drawing
 
14. A system for increasing switching efficiency, the system comprising:
a first stage configured to generate a first signal based on at least one feedback signal;
an inverter configured to generate a first triangle wave signal by taking an inverse of a reference triangle wave signal;
a first summer configured to sum the first signal with the first triangle wave signal and with a square wave signal to generate a second signal;
a third stage configured to generate a second triangle wave signal by combining the reference triangle wave signal with a positive reference signal, and to generate a third triangle wave signal by combining the reference triangle wave signal with a negative reference signal;
a first comparator configured to compare the second signal with the second triangle wave signal to generate a first pulse width modulation (PWM) signal, wherein generating the first PWM signal includes generating a first inverse PWM signal that is an inverse of the first PWM signal;
a second comparator configured to compare the second signal with the third triangle wave signal to generate a second PWM signal, wherein generating the second PWM signal includes generating a second inverse PWM signal that is an inverse of the second PWM signal;
a fourth stage configured to generate an output signal based on the first PWM signal and the second PWM signal, wherein generating the output signal further includes generating the at least one feedback signal; and
a plurality of switches configured to be driven based on the first PWM signal, the first inverse PWM signal, the second PWM signal, and the second inverse PWM signal.