US 11,777,413 B2
Sigma, delta and sigma-delta DC/DC converters for wide input and output voltage ranges
Laszlo Huber, Cary, NC (US); Tomas Sadilek, Durham, NC (US); Misha Kumar, Cary, NC (US); Zhiyu Shen, Cary, NC (US); Jinfa Zhang, Shanghai (CN); Chia-Hsiong Huang, Taoyuan (TW); and Peter Mantovanelli Barbosa, Durham, NC (US)
Assigned to DELTA ELECTRONICS, INC., Neihu (TW)
Filed by DELTA ELECTRONICS, INC., Neihu (TW)
Filed on Jun. 14, 2021, as Appl. No. 17/346,681.
Claims priority of provisional application 63/111,346, filed on Nov. 9, 2020.
Prior Publication US 2022/0149744 A1, May 12, 2022
Int. Cl. H02M 3/335 (2006.01); H02M 3/158 (2006.01); H03M 3/00 (2006.01); H02M 1/00 (2006.01); H02M 1/08 (2006.01)
CPC H02M 3/33584 (2013.01) [H02M 1/0095 (2021.05); H02M 1/08 (2013.01); H03M 3/39 (2013.01); H02M 3/1584 (2013.01); H02M 3/33523 (2013.01)] 52 Claims
OG exemplary drawing
 
1. A converter receiving a source voltage from a voltage source and providing an output voltage across a load, the converter comprising:
a first DC/DC converter having an input port and first and second output ports; and
a second DC/DC converter having an input port and an output port and receiving a control signal derived from the output voltage; and
wherein (i) the input ports of the first and the second DC/DC converters are connected in series across the voltage source, configured such that the voltage across the input port of the first DC/DC converter is less than the source voltage; (ii) the first output port of the first DC/DC converter providing the output voltage; (iii) the second output port of the first DC/DC converter and the output port of the second DC/DC converter are connected in parallel, and (iv) the second DC/DC converter regulates the output voltage based on the control signal.