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1. 发明申请

US20090219049A1 Method and Apparatus for Testing and Protecting Digital Output Circuits 有权
标题翻译：用于测试和保护数字输出电路的方法和装置
公开(公告)号：US20090219049A1
公开(公告)日：2009-09-03
申请号：US12393431
申请日：2009-02-26
申请人： Thomas Bruce Meagher , Gerald Robert Creech , Robert Sidney Ord
发明人： Thomas Bruce Meagher , Gerald Robert Creech , Robert Sidney Ord
IPC分类号： G01R31/26
CPC分类号： G01R31/024 , G01R31/3277
摘要： A method and system for testing and protecting the operability of an output module. An output channel includes a transistor having a gate, a source, and a drain. The output channel drives a load with a load voltage and a load current in dependence upon a gate drive signal applied to the gate. The system determines a voltage threshold and a current threshold and monotonically varies the gate drive signal from a starting value for a predetermined time interval while monitoring the load current and the load voltage. The system returns the gate drive signal to the starting value if any of the load voltage reaches the voltage threshold, the load current reaches the current threshold, or a predetermined time interval expires indicating the condition of the output module.
摘要翻译：一种用于测试和保护输出模块可操作性的方法和系统。输出通道包括具有栅极，源极和漏极的晶体管。输出通道根据施加到栅极的栅极驱动信号来驱动具有负载电压和负载电流的负载。系统确定电压阈值和电流阈值，并且在监视负载电流和负载电压的同时，在预定时间间隔内从起始值单调地改变栅极驱动信号。如果任何负载电压达到电压阈值，负载电流达到当前阈值，或者指示输出模块的状态的预定时间间隔期满，系统将门驱动信号返回到起始值。

2. 发明授权

US07948257B2 Method and apparatus for testing and protecting digital output circuits 有权
标题翻译：用于测试和保护数字输出电路的方法和装置
公开(公告)号：US07948257B2
公开(公告)日：2011-05-24
申请号：US12393431
申请日：2009-02-26
申请人： Thomas Bruce Meagher , Gerald Robert Creech , Robert Sidney Ord
发明人： Thomas Bruce Meagher , Gerald Robert Creech , Robert Sidney Ord
IPC分类号： G01R31/26
CPC分类号： G01R31/024 , G01R31/3277
摘要： A method and system for testing and protecting the operability of an output module. An output channel includes a transistor having a gate, a source, and a drain. The output channel drives a load with a load voltage and a load current in dependence upon a gate drive signal applied to the gate. The system determines a voltage threshold and a current threshold and monotonically varies the gate drive signal from a starting value for a predetermined time interval while monitoring the load current and the load voltage. The system returns the gate drive signal to the starting value if any of the load voltage reaches the voltage threshold, the load current reaches the current threshold, or a predetermined time interval expires indicating the condition of the output module.
摘要翻译：一种用于测试和保护输出模块可操作性的方法和系统。输出通道包括具有栅极，源极和漏极的晶体管。输出通道根据施加到栅极的栅极驱动信号来驱动具有负载电压和负载电流的负载。系统确定电压阈值和电流阈值，并且在监视负载电流和负载电压的同时，在预定时间间隔内从起始值单调地改变栅极驱动信号。如果任何负载电压达到电压阈值，负载电流达到当前阈值，或者指示输出模块的状态的预定时间间隔期满，系统将门驱动信号返回到起始值。

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