1 / 8

Sachs et. al. IEEE Trans. Nuclear Science NS-31, 1249 (1984)

Threshold Shift vs Gate Oxide Thickness. Poly- Si Gate. SiO 2. Si. +. +. +. +. +. +. +. +. +. +. +. +. e --. e --. +. +. +. +. +. +. +. +. Tunneling Region. +. +. +. +. Hole removal process by tunneling in thin-oxide MOS Structures. Dosage = 150 Krads.

nasia
Download Presentation

Sachs et. al. IEEE Trans. Nuclear Science NS-31, 1249 (1984)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Threshold Shift vs Gate Oxide Thickness Poly- Si Gate SiO2 Si + + + + + + + + + + + + e-- e-- + + + + + + + + Tunneling Region + + + + Hole removal process by tunneling in thin-oxide MOS Structures Dosage = 150 Krads Sachs et. al. IEEE Trans. Nuclear Science NS-31, 1249 (1984) Book. Timothy R Oldham “Ionizing Radiation Effects in MOS Oxides” 1999 World Scientific

  2. Enpirion EN5360 With Integrated Inductor Found out at Power Technology conference 0.25 µm Lithography • Irradiated Stopped on St. Valentines Day 2007 • We reported @ TWEPP 2008 - IHP was foundry for EN5360

  3. Twepp Nagos

  4. Is there a Commercial product available ? • Yes = It is the EN5360 • Satellite folks are using it now • sLHC Levels – 100 Mrads • Use for voltage ratio = 4 • Work at Super LHC levels for Tracker • 5.5 V in > 1.3 out • Enpirion is still supplying these to a very large customer • IHP foundry will make it for many years. • Can purchase in Die form for use with Air coil For Purchasing EN5360: Steve Robb (908) 894 -6083 srobb@enpirion.com Tom Howell (908) 894-6029 thowell@enpirion.com

  5. 4 Wire Current shunt 4 Wire Current shunt DC-DC Converter Voltage ratio = 8/10 Load: Rated Current or maximum without cooling ~ 1 amp Setup for 4 EVAL Boards Measure Bias Current with Load disconnected Power Supply V out > 5 – 20 Volts ~ 0.5 Amps . VInput 5.5 V max to prevent damage. GND V Output Monitor 2 wire Differential Twisted Pair Preferred V Input Monitor. 2 Wire Differential Agilent 34970A & Multiplexer 33901A to Monitor I & V Buck Regulator Eval Board Size = 3 inch x 3.5 inch Twisted Pair Preferred Solder all wires ???? V Output Monitor 2 wire Differential Load Resistor = 0.3 to 1.5 Ώ 1 to 5 Amps . GND V Output = 1.5 V . Switch on/off V Output Monitor 2 wire Differential Line Drop ~ 0.25 volts @ 6 amps in each Leg ??? Banana Jacks / Solder Wires Satish Dhawan, Yale University DC-DC Regulator Setup for Radiation Exposure April 21. 2008

More Related