Invention Grant
- Patent Title: Circuit implementations reducing losses in a power supply
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Application No.: US14605141Application Date: 2015-01-26
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Publication No.: US09647559B2Publication Date: 2017-05-09
- Inventor: Alex Lollio
- Applicant: International Rectifier Corporation
- Applicant Address: US CA El Segundo
- Assignee: Infineon Technologies Americas Corp.
- Current Assignee: Infineon Technologies Americas Corp.
- Current Assignee Address: US CA El Segundo
- Agency: Chapin IP Law, LLC
- Main IPC: H02M3/156
- IPC: H02M3/156 ; H02M3/158 ; H02M3/157 ; H03K17/082 ; H02M1/00

Abstract:
A power supply circuit includes a control switch, a synchronous switch, an inductor, and a voltage ramping circuit. A common node in the power supply serially connects the control switch to the synchronous switch. The common node is further coupled to the inductor that supplies current to a load based on switching the control switch and the synchronous switch to respective ON/OFF and OFF/ON states. The voltage ramping circuit generates and controls ramping of a gate voltage of the control switch based at least in part on a magnitude of a feedback voltage received on a circuit path from the common node. The multi-stage ramping of a switch control voltage reduces one or more of the following: i) QRR losses, ii) switching losses, and/or iii) a dead time of the power supply.
Public/Granted literature
- US20160218611A1 CIRCUIT IMPLEMENTATIONS REDUCING LOSSES IN A POWER SUPPLY Public/Granted day:2016-07-28
Information query
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