Invention Grant
- Patent Title: Soft shutdown for isolated drivers
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Application No.: US14036176Application Date: 2013-09-25
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Publication No.: US09698654B2Publication Date: 2017-07-04
- Inventor: Paulo Santos , Tufan Karalar , Michael J. Mills , Ross Sabolcik , Rudye McGlothlin , Michael L. Duffy , András Vince Horvath
- Applicant: Silicon Laboratories Inc.
- Applicant Address: US TX Austin
- Assignee: Silicon Laboratories Inc.
- Current Assignee: Silicon Laboratories Inc.
- Current Assignee Address: US TX Austin
- Agency: Zagorin Cave LLP
- Main IPC: H02H9/00
- IPC: H02H9/00 ; H02K11/00 ; H02P27/06 ; H02H7/08 ; H02K11/20 ; H02P29/024

Abstract:
An apparatus for controlling a high-power drive device external to a package of a motor drive circuit includes a motor drive circuit. The motor drive circuit includes a driver to control the high-power drive device based on a first reference voltage, a second reference voltage, and a control signal based on a received control signal. A fault circuit generates a failure indicator based on a voltage across terminals of the high-power drive device. A fault condition is based on the failure indicator. A first terminal coupled to the driver charges a node of the high-power drive device over a first length of time in response to an absence of the fault condition and a first level of the control signal. A second terminal coupled to the driver discharges the node over a second length of time different from the first length of time.
Public/Granted literature
- US20150085403A1 SOFT SHUTDOWN FOR ISOLATED DRIVERS Public/Granted day:2015-03-26
Information query