公开(公告)号：US20200321860A1

公开(公告)日：2020-10-08

申请号：US16843175

申请日：2020-04-08

Applicant: The Regents of the University of California

Inventor： Sally Amin ,  Patrick Mercier

IPC: H02M3/07 ,  H03K3/356 ,  H02J7/00

Abstract: A DC-DC converter converts voltage from a battery source providing a voltage Vin to a lower level. A four-level transistor stack selectively connects an input voltage and flying capacitor voltages to an output inductor. Stress reduction transistors limit the charging of the flying capacitors to Vin/3. The stress reduction transistors can also limit switching transistor voltages to Vin/3. Freewheel switches can be used to limit ringing in the output inductor.

公开(公告)号：US11356017B2

公开(公告)日：2022-06-07

申请号：US16843175

申请日：2020-04-08

Applicant: The Regents of the University of California

Inventor： Sally Amin ,  Patrick Mercier

IPC: H02M3/07 ,  H03K3/356 ,  H02J7/00 ,  H01M10/0525

Abstract: A DC-DC converter converts voltage from a battery source providing a voltage Vin to a lower level. A four-level transistor stack selectively connects an input voltage and flying capacitor voltages to an output inductor. Stress reduction transistors limit the charging of the flying capacitors to Vin/3. The stress reduction transistors can also limit switching transistor voltages to Vin/3. Freewheel switches can be used to limit ringing in the output inductor.