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DTSTART:20260308T030000
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DTSTAMP:20260505T045801Z
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DTSTART;TZID=America/Los_Angeles:20260505T100000
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DESCRIPTION:This talk covers research on miniaturized power supplies using 
 high-voltage IC technologies from\n110/230V mains or 400V DC sources to po
 wer low-voltage subsystems. It explores system and circuit\nsolutions for 
 chip-scale power supplies\, enhancing miniaturization and decentralization
  of complex\nsystems\, applicable to sensor nodes\, transmitters\, receive
 rs\, and actuators with 3-10V supply voltages at\nor below 500mW.\nHighlig
 hted are various miniaturized high-voltage converters\, including active-c
 lamp flyback and buck\nconverters. An innovative voltage-interval-based co
 nstant-on-time control for buck converters supports\n12.5-400 V input\, ac
 hieving a power density of 752 mW/cm³ and 84% peak efficiency. A high-spe
 ed\, low-\npower HV threshold-detection circuit significantly reduces sens
 ing losses.\nThe AC-DC converter features an active zero-crossing buffer\,
  minimizing capacitance by 240x and\nenabling integration up to 50 mW with
  a power density of 458 mW/cm³ and 73.7% AC peak efficiency.\nMonolithic 
 GaN integration supports designs like a 55W PFC converter and a 15W offlin
 e buck converter.\nA fully integrated GaN power stage operating at 500V an
 d up to 6.25MHz will also be presented.\n\nSpeaker(s): Bernhard Wicht\n\nV
 irtual: https://events.vtools.ieee.org/m/555593
LOCATION:Virtual: https://events.vtools.ieee.org/m/555593
ORGANIZER:rakshitdambe.nayak@asu.edu
SEQUENCE:78
SUMMARY:Webinar: Chip-Scale High-Voltage Power Supplies
URL;VALUE=URI:https://events.vtools.ieee.org/m/555593
X-ALT-DESC:Description: <br /><p>This talk covers research on miniaturized 
 power supplies using high-voltage IC technologies from<br>110/230V mains o
 r 400V DC sources to power low-voltage subsystems. It explores system and 
 circuit<br>solutions for chip-scale power supplies\, enhancing miniaturiza
 tion and decentralization of complex<br>systems\, applicable to sensor nod
 es\, transmitters\, receivers\, and actuators with 3-10V supply voltages a
 t<br>or below 500mW.<br>Highlighted are various miniaturized high-voltage 
 converters\, including active-clamp flyback and buck<br>converters. An inn
 ovative voltage-interval-based constant-on-time control for buck converter
 s supports<br>12.5-400 V input\, achieving a power density of 752 mW/cm&su
 p3\; and 84% peak efficiency. A high-speed\, low-<br>power HV threshold-de
 tection circuit significantly reduces sensing losses.<br>The AC-DC convert
 er features an active zero-crossing buffer\, minimizing capacitance by 240
 x and<br>enabling integration up to 50 mW with a power density of 458 mW/c
 m&sup3\; and 73.7% AC peak efficiency.<br>Monolithic GaN integration suppo
 rts designs like a 55W PFC converter and a 15W offline buck converter.<br>
 A fully integrated GaN power stage operating at 500V and up to 6.25MHz wil
 l also be presented.</p>
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