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公开(公告)号:US6437252B2
公开(公告)日:2002-08-20
申请号:US74145500
申请日:2000-12-19
Applicant: IBM
Inventor: REHM SIMONE , FRECH ROLAND , KLINK ERICH , VIRAG HELMUT , WINKEL THOMAS-MICHAEL , BECKER WIREN , CHAMBERLIN BRUCE , MA WAI
CPC classification number: H05K1/113 , H05K1/0231 , H05K1/115 , H05K3/429 , H05K2201/09472 , H05K2201/0979 , H05K2201/10522 , H05K2201/10636 , Y02P70/611 , Y10T29/4913
Abstract: Described is a method for minimizing switching noise in the high- and mid-frequency range on printed circuit cards or boards by means of a plurality of surface mounted decoupling capacitors. A novel configuration and implementation of capacitor pads including the connecting vias is also presented. As a result the parasitic inductance of the pads and vias can be significantly reduced. Thus the effectiveness of the decoupling capacitors in the mid and high frequency range can be increased, the voltage drop can be reduced and the system performance can be increased. Several design rules for the new pad via configuration lead to the significant reduction of the parasitic inductance. The proposal is especially important for high integrated system designs on boards and cards combined with increased cycle times.
Abstract translation: 描述了一种通过多个表面安装的去耦电容器来最小化印刷电路板或板上的高频和中频范围内的开关噪声的方法。 还介绍了包括连接通孔的电容器焊盘的新颖配置和实现。 结果,焊盘和通孔的寄生电感可以显着降低。 因此,可以提高中高频区域中的去耦电容器的有效性,可以降低电压降并且可以提高系统性能。 新焊盘通过配置的几个设计规则导致寄生电感的显着减少。 该建议对于板卡和卡上的高集成系统设计以及增加的周期时间尤其重要。
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公开(公告)号:JPH11354724A
公开(公告)日:1999-12-24
申请号:JP33881398
申请日:1998-11-30
Applicant: IBM
Inventor: FRECH ROLAND DR , KLINK ERICH , SHUTLER WILLIAM , WEISS ULRICH , WINKEL THOMAS-MICHAEL
Abstract: PROBLEM TO BE SOLVED: To reduce power noise by connecting a first low pass filter which has an off-chip capacitance and filtrates intermediate-frequency power noise, and a second low pass filter which has an on-chip capacitance and filtrates high-frequency power noise in series. SOLUTION: A first low pass filter which filtrates intermediate-frequency power noise having a frequency of 10-100 MHz is composed of an off-chip capacitance 2, an on-chip resistor R16 which connects a voltage surface VDD to an in-chip node 18, and thin film wiring 8 in the uppermost layer of a multilayered thin film. A second low pass filter which filtrates high-frequency power noise is composed of an on-chip capacitance 12 and an on-chip resistor 7. The first and second low pass filters are connected in series. The first low pass band stage backs up the low induced charge of the capacitance 12 of the second low pass filter and the second low pass band stage becomes the low induced current source of a voltage-controlled device.
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公开(公告)号:DE19848743A1
公开(公告)日:1999-06-17
申请号:DE19848743
申请日:1998-10-22
Applicant: IBM
Inventor: FRECH ROLAND DR , KLINK ERICH , SHUTLER WILLIAM , WEISS ULRICH , WINKEL THOMAS-MICHAEL
Abstract: There is a first low pass stage, containing a capacity (2) outside the chip (4) for picking-up power supply interference voltages, and a second low pass stage with a capacitor (12) on the chip for picking-up HF interference voltages, with the two stages in series. The first stage capacity and chip are coupled by a thin-film wiring (8). The first stage provides a low-inductance supply for the second stage capacity, while the second stage provides a low-inductance current source for the voltage controlled component.
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公开(公告)号:GB2503442A
公开(公告)日:2014-01-01
申请号:GB201211280
申请日:2012-06-26
Applicant: IBM
Inventor: ECKERT MARTIN , SIVIERO CLAUDIO , SUPPER JOCHEN , WINKEL THOMAS-MICHAEL , TORREITER OTTO ANDREAS , FRECH ROLAND
Abstract: A network power fault detection method comprises instructing at least one first network device to temporarily disconnect from a power supply path of a network, and measuring, at a second network device connected to the network, at least one characteristic of the power supply path of the network while the first network device is temporarily disconnected from the network. The measured characteristic may be voltage and/or current from which impedance may be determined. The network device may comprise a receiver 210 coupled to a bus 202 to receive an instruction to disconnect. A switch 220 activates to disconnect the device and a measurement unit 230 measures a property. Impedance is calculated by unit 240 and may be communicated via the bus to another network device. Network topology can be used to determine fault location. The network may be on a vehicle and may be an electrical or optical network.
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公开(公告)号:AT385663T
公开(公告)日:2008-02-15
申请号:AT00126690
申请日:2000-12-05
Applicant: IBM
Inventor: FRECH ROLAND , KLINK ERICH , REHM SIMONE , VIRAG HELMUT , WINKEL THOMAS-MICHAEL , CHAMBERLIN BRUCE , BECKER WIREN DALE , MA WAI MON
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