US 11,990,839 B2
Power converters with large duty cycles
Parviz Parto, Laguna Niguel, CA (US); Saurabh Anil Jayawant, Laguna Niguel, CA (US); and Jimmy Lin, New Taipei (TW)
Assigned to Faraday Semi, Inc., Irvine, CA (US)
Filed by Faraday Semi, Inc., Irvine, CA (US)
Filed on Jun. 20, 2023, as Appl. No. 18/338,188.
Claims priority of provisional application 63/366,762, filed on Jun. 21, 2022.
Prior Publication US 2023/0412079 A1, Dec. 21, 2023
Int. Cl. H02M 3/158 (2006.01); H02M 1/00 (2006.01); H02M 3/07 (2006.01)
CPC H02M 3/158 (2013.01) [H02M 1/0009 (2021.05); H02M 1/0058 (2021.05); H02M 3/07 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A power converter comprising:
an input configured to receive an input voltage;
an output configured to output an output voltage that is different than the input voltage;
a first inductor;
a second inductor;
a first switch;
a second switch;
a third switch, wherein the second switch and the third switch are configured to control current through the second inductor;
a fourth switch, wherein the first switch and the fourth switch are configured to control current through the first inductor;
an AC coupling capacitor that is coupled between the first power switch and the first inductor;
a fifth switch having a first state that couples the AC coupling capacitor to a discharge path to at least partially discharge the AC coupling capacitor, the fifth switch having a second state that decouples the AC coupling capacitor from the discharge path; and
a driver configured to operate the first, second, third, fourth, and fifth switches to change the input voltage to provide the output voltage;
wherein the driver is configured to provide:
a first state of operation wherein:
the first switch is on;
the second switch is on;
the third switch is off;
the fourth switch is off; and
the fifth switch is off;
a second state of operation wherein:
the first switch is on;
the second switch is off;
the third switch is on;
the fourth switch is off; and
the fifth switch is off;
a third state of operation wherein:
the first switch is on;
the second switch is on;
the third switch is off;
the fourth switch is off; and
the fifth switch is off; and
a fourth state of operation wherein:
the first power switch is off;
the second power switch is on;
the third power switch is off;
the fourth power switch is on; and
the fifth switch is on.