公开(公告)号：US20090160457A1

公开(公告)日：2009-06-25

申请号：US12360046

申请日：2009-01-26

申请人： Philipp S. Spuhler ,  Bert M. Vermeire ,  James P. Hofmeister

发明人： Philipp S. Spuhler ,  Bert M. Vermeire ,  James P. Hofmeister

IPC分类号： G01R31/02

CPC分类号： G01R31/048 ,  G01R31/2884 ,  G01R31/312

摘要： The solder-joint integrity of digital electronic packages, such as FPGAs or microcontrollers that have internally connected input/output buffers, is evaluated by applying a time-varying voltage through one or more solder-joint networks to charge a charge-storage component. Each network includes an I/O buffer on the die in the package and a solder-joint connection, typically one or more such connections inside the package and between the package and a board. The time constant for charging the component is proportional to the resistance of the solder-joint network, hence the voltage across the charge-storage component is a measurement of the integrity of the solder-joint network.

摘要翻译： 数字电子封装（例如具有内部连接的输入/输出缓冲器的微控制器）的焊接完整性通过通过一个或多个焊点网络施加时变电压来对电荷存储部件进行充电来评估。 每个网络包括在封装中的管芯上的I / O缓冲器和焊接接头，通常在封装内部以及封装与板之间的一个或多个这样的连接。 用于对部件充电的时间常数与焊点网络的电阻成比例，因此电荷存储部件两端的电压是测量焊点网络的完整性。

公开(公告)号：US07501832B2

公开(公告)日：2009-03-10

申请号：US11325076

申请日：2006-01-04

申请人： Philipp S. Spuhler ,  Bert M. Vermeire ,  James P. Hofmeister

发明人： Philipp S. Spuhler ,  Bert M. Vermeire ,  James P. Hofmeister

IPC分类号： G01R31/02

CPC分类号： G01R31/048 ,  G01R31/2884 ,  G01R31/312

摘要： The solder-joint integrity of digital electronic packages, such as FPGAs or microcontrollers that have internally connected input/output buffers, is evaluated by applying a time-varying voltage through one or more solder-joint networks to charge a charge-storage component. Each network includes an I/O buffer on the die in the package and a solder-joint connection, typically one or more such connections inside the package and between the package and a board. The time constant for charging the component is proportional to the resistance of the solder-joint network, hence the voltage across the charge-storage component is a measurement of the integrity of the solder-joint network.

摘要翻译： 数字电子封装（例如具有内部连接的输入/输出缓冲器的微控制器）的焊接完整性通过通过一个或多个焊点网络施加时变电压来对电荷存储部件进行充电来评估。 每个网络包括在封装中的管芯上的I / O缓冲器和焊接接头，通常在封装内部以及封装与板之间的一个或多个这样的连接。 用于对部件充电的时间常数与焊点网络的电阻成比例，因此电荷存储部件两端的电压是测量焊点网络的完整性。

公开(公告)号：US07196294B2

公开(公告)日：2007-03-27

申请号：US11350446

申请日：2006-02-09

申请人： James P. Hofmeister ,  Philipp S. Spuhler ,  Bert M. Vermeire

发明人： James P. Hofmeister ,  Philipp S. Spuhler ,  Bert M. Vermeire

IPC分类号： H05B1/02

CPC分类号： G01R31/048 ,  B23K1/0016 ,  B23K2101/40 ,  G01R31/2884 ,  H01L2224/16225 ,  H01L2924/00011 ,  H01L2924/00014 ,  H01L2924/15311 ,  H01L2224/0401

摘要： A solder-joint detection circuit uses a resistive bridge and a differential detector to detect faults in the solder-joint network both inside and outside the digital electronic package during operation. The resistive bridge is preferably coupled to a high supply voltage used to power the package. Resistors R1 and R2 are connected in series at a first junction between the high and low supply voltages and a resistor R3 is coupled to the high supply voltage and connected in series with the resistance of the solder-network at a second junction. The network is held at a low voltage on the die. The detector compares the sensitivity and detection voltages and outputs a Pass/Fail signal for the solder-joint network.

摘要翻译： 焊接检测电路使用电阻桥和差分检测器来检测数字电子封装内部和外部的焊点网络中的故障。 电阻桥优选地耦合到用于为封装供电的高电源电压。 电阻器R 1和R 2在高电源电压和低电源电压之间的第一连接处串联连接，并且电阻器R 3耦合到高电源电压并且在第二连接处与焊料网络的电阻串联连接。 网络在模具上保持低电压。 检测器比较灵敏度和检测电压，并输出焊点网络的通过/失败信号。