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公开(公告)号：US20180083611A1
公开(公告)日：2018-03-22
申请号：US15705718
申请日：2017-09-15
摘要： In at least one general aspect, an apparatus can include a first field effect transistor (FET) device and a second FET device. The apparatus can include a characterization circuit coupled to the first FET device and the second FET device where the characterization circuit can be configured to characterize a responsiveness of each of the first FET device and the second FET device. The apparatus can include a balancer configured to produce a modified gate drive signal for the first FET device based on the responsiveness of the first FET device.
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公开(公告)号：US20180048241A1
公开(公告)日：2018-02-15
申请号：US15790943
申请日：2017-10-23
发明人： Hangseok CHOI , Lei CHEN , Cheng-Sung CHEN
CPC分类号： H02M3/33592 , H02M1/08 , H02M2001/0009 , H02M2001/0032 , H02M2001/0048 , Y02B70/1475 , Y02B70/1491 , Y02B70/16
摘要： A switching converter includes a synchronous rectifier and a synchronous rectifier driver that controls conduction of the synchronous rectifier. The synchronous rectifier driver turns OFF the synchronous rectifier in response to a turn-off trigger. The synchronous rectifier driver prevents the turn-off trigger from turning OFF the synchronous rectifier during a turn-off trigger blanking time that is adaptively set based on a conduction time of the synchronous rectifier.
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公开(公告)号：US09877104B2
公开(公告)日：2018-01-23
申请号：US14748066
申请日：2015-06-23
发明人： Lei Huang , Julie Stulz , Eric Li
IPC分类号： H04R3/00 , H03K17/16 , H03K17/687 , H03F1/30
CPC分类号： H04R3/00 , H03K17/166
摘要： An audio switch circuit includes negative feedback paths and a transistor that serves as a switching component. The negative feedback paths are turned ON to couple a source voltage and a drain voltage of the transistor to the gate of the transistor when the audio switch circuit is turned ON. The negative feedback paths reduce the slew rate of the gate-to-source voltage of the transistor, thereby slowing the turn-ON of the audio switch circuit to prevent or minimize unwanted audible noise. The negative feedback paths can be turned OFF after a period of time after the audio switch circuit is turned ON for improved total harmonic distortion.
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24.发明申请公开(公告)号：US20180012958A1
公开(公告)日：2018-01-11
申请号：US15688833
申请日：2017-08-28
发明人： Joseph A. YEDINAK , Ashok CHALLA , Dean E. PROBST , Daniel KINZER
IPC分类号： H01L29/06 , H01L29/739 , H01L29/78 , H01L29/872 , H01L29/40 , H01L29/423 , H01L29/10 , H01L29/417
CPC分类号： H01L29/0634 , H01L29/0619 , H01L29/0638 , H01L29/0696 , H01L29/1095 , H01L29/402 , H01L29/407 , H01L29/41741 , H01L29/41766 , H01L29/42368 , H01L29/42372 , H01L29/4238 , H01L29/7397 , H01L29/7811 , H01L29/7813 , H01L29/7827 , H01L29/872 , H01L29/8725
摘要： Exemplary power semiconductor devices with features providing increased breakdown voltage and other benefits are disclosed.
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公开(公告)号：US20170303057A1
公开(公告)日：2017-10-19
申请号：US15642940
申请日：2017-07-06
IPC分类号： H04R29/00
CPC分类号： H04R29/001
摘要： In one general aspect, a method can include calculating, at a calibration temperature of a speaker, a calibration parameter through a coil of the speaker in response to a first test signal, and can include sending a second test signal through the coil of the speaker. The method can also include measuring a parameter through the coil of the speaker based on the second test signal, and calculating a temperature change of the coil of the speaker based on the parameter and based on the calibration parameter at the calibration temperature.
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公开(公告)号：US20170288048A1
公开(公告)日：2017-10-05
申请号：US15626690
申请日：2017-06-19
发明人： Martin DOMEIJ
CPC分类号： H01L29/7802 , H01L29/0623 , H01L29/063 , H01L29/0696 , H01L29/0878 , H01L29/1095 , H01L29/1608 , H01L29/66068
摘要： In one general aspect, an apparatus can include a silicon carbide (SiC) device can include a gate dielectric, a first doped region having a first conductivity type, a source, a body region of the first conductivity type, and a second doped region having a second conductivity type. The second doped region can have a first portion and a second portion. The first portion can be disposed between the first doped region and the body region and the second portion can be disposed between the first doped region and the gate dielectric. The first portion of the second doped region can have a width less than a width of the first doped region.
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公开(公告)号：US09735112B2
公开(公告)日：2017-08-15
申请号：US14593642
申请日：2015-01-09
发明人： John Constantino , Timwah Luk , Ahmad Ashrafzadeh , Robert L. Krause , Etan Shacham , Maria Clemens Ypil Quinones , Janusz Bryzek , Chung-Lin Wu
IPC分类号： H01L23/538 , H01L27/06 , H01L49/02 , H01L23/495 , H01L23/66
CPC分类号： H01L23/538 , H01L23/49531 , H01L23/49537 , H01L23/49541 , H01L23/49575 , H01L23/49589 , H01L23/66 , H01L27/06 , H01L28/40 , H01L2224/0603 , H01L2224/16145 , H01L2224/32145 , H01L2224/48091 , H01L2224/48137 , H01L2224/48247 , H01L2224/73257 , H01L2224/73265 , H01L2924/13055 , H01L2924/181 , H01L2924/00014 , H01L2924/00 , H01L2924/00012
摘要： In some general aspects, an apparatus may include a first semiconductor die, a second semiconductor die, and a capacitive isolation circuit being coupled to the first semiconductor die and the second semiconductor die. The capacitive isolation circuit may be disposed outside of the first semiconductor die and the second semiconductor die. The first semiconductor die, the second semiconductor die, and the capacitive circuit may be included in a molding of a semiconductor package.
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公开(公告)号：US09671803B2
公开(公告)日：2017-06-06
申请号：US14523233
申请日：2014-10-24
CPC分类号： G05F1/575
摘要： Methods and apparatus for a dynamic bias generator are provided. In an example, a dynamic bias generator for a voltage regulator can include a slope generator and a peak detector coupled to the slope generator. In certain examples, the slope generator and the peak detector can receive a representation of output current of the voltage regulator and can adjust a bias control voltage at an output of the peak detector in response to a change in the output current of the voltage regulator.
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公开(公告)号：US09654089B2
公开(公告)日：2017-05-16
申请号：US14086608
申请日：2013-11-21
发明人： Gregory A. Maher , Kenneth O'Brien
CPC分类号： H03K5/08
摘要： This document discusses, among other things, a detection circuit configured to receive an output of a window comparator over a range of input values and to measure a difference between first and second thresholds of the window comparator, and a trim circuit configured to adjust at least one of the first or second thresholds using the measured difference between the first and second thresholds.
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公开(公告)号：US09647546B2
公开(公告)日：2017-05-09
申请号：US14560630
申请日：2014-12-04
发明人： William D. Llewellyn
CPC分类号： H02M3/158 , H02M3/07 , H02M2001/0022 , H02M2001/0025 , H02M2001/007
摘要： Devices and methods provide a voltage regulating device including voltage supply circuitry configured to receive a first voltage, generate at least a second voltage based on the first voltage, and output an output voltage, the output voltage being one of the first voltage and the second voltage based on a voltage selection signal; regulator circuitry configured to switch between the output voltage and a reference potential based on a control signal; and control circuitry configured to generate the control signal, the control signal having a first duty cycle if the output voltage is the first voltage and a second duty cycle if the output voltage is the second voltage, the control circuitry configured to adjust the second duty cycle based on, at least in part, a droop voltage in the regulator circuitry.
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