WO2001073929A3 - Apparatus for reducing power supply noise in an integrated circuit - Google Patents

Apparatus for reducing power supply noise in an integrated circuit Download PDF

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Publication number
WO2001073929A3
WO2001073929A3 PCT/US2001/001955 US0101955W WO0173929A3 WO 2001073929 A3 WO2001073929 A3 WO 2001073929A3 US 0101955 W US0101955 W US 0101955W WO 0173929 A3 WO0173929 A3 WO 0173929A3
Authority
WO
WIPO (PCT)
Prior art keywords
dut
input terminal
power input
current
demand
Prior art date
Application number
PCT/US2001/001955
Other languages
French (fr)
Other versions
WO2001073929A2 (en
Inventor
Benjamin N Eldrige
Charles A Miller
Original Assignee
Formfactor Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Formfactor Inc filed Critical Formfactor Inc
Priority to AU2001232887A priority Critical patent/AU2001232887A1/en
Priority to EP20010904961 priority patent/EP1219008A2/en
Publication of WO2001073929A2 publication Critical patent/WO2001073929A2/en
Publication of WO2001073929A3 publication Critical patent/WO2001073929A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/317—Testing of digital circuits
    • G01R31/31721—Power aspects, e.g. power supplies for test circuits, power saving during test

Abstract

A main power supply continuously provides a current to a power input terminal of an integrated circuit device under test (DUT). The DUT's demand for current at the power input terminal temporarily increases during state changes in synchronous logic circuits implemented within the DUT. To limit variation (noise) in voltage at the power input terminal arising from these temporary increases in current demand, a charged capacitor is connected to the power input terminal during each DUT state change. The capacitor discharges into the power input terminal to supply additional current to meet the DUT's increased demand. Following each DUT state change the capacitor is disconnected from the power input terminal and charged to a level sufficient to meet a predicted increase in current demand during a next DUT state change.
PCT/US2001/001955 2000-01-18 2001-01-18 Apparatus for reducing power supply noise in an integrated circuit WO2001073929A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2001232887A AU2001232887A1 (en) 2000-01-18 2001-01-18 Apparatus for reducing power supply noise in an integrated circuit
EP20010904961 EP1219008A2 (en) 2000-01-18 2001-01-18 Apparatus for reducing power supply noise in an integrated circuit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/484,600 US6339338B1 (en) 2000-01-18 2000-01-18 Apparatus for reducing power supply noise in an integrated circuit
US09/484,600 2000-01-18

Publications (2)

Publication Number Publication Date
WO2001073929A2 WO2001073929A2 (en) 2001-10-04
WO2001073929A3 true WO2001073929A3 (en) 2002-04-25

Family

ID=23924816

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/001955 WO2001073929A2 (en) 2000-01-18 2001-01-18 Apparatus for reducing power supply noise in an integrated circuit

Country Status (5)

Country Link
US (2) US6339338B1 (en)
EP (1) EP1219008A2 (en)
AU (1) AU2001232887A1 (en)
TW (1) TW529232B (en)
WO (1) WO2001073929A2 (en)

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Also Published As

Publication number Publication date
AU2001232887A1 (en) 2001-10-08
EP1219008A2 (en) 2002-07-03
TW529232B (en) 2003-04-21
US6339338B1 (en) 2002-01-15
US20020036515A1 (en) 2002-03-28
US6456103B1 (en) 2002-09-24
WO2001073929A2 (en) 2001-10-04

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