发明名称 |
Power safety circuit, integrated circuit device and safety critical system |
摘要 |
A power safety circuit comprises a power sense terminal; an output terminal; an output driver unit connected to the output terminal; an input terminal connectable to receive a first power from a power source and arranged to supply the first power to the output driver unit; and a power detection unit arranged to detect a state of the input terminal and provide a power sense signal to the power sense terminal; wherein the power sense terminal is arranged to supply a second power to the output driver unit when the power sense signal indicates a level of the first power below a minimum level for driving the output terminal. An integrated circuit device comprises at least one power safety circuit. A safety critical system comprises at least one integrated circuit device with at least one power safety circuit. |
申请公布号 |
US9620992(B2) |
申请公布日期 |
2017.04.11 |
申请号 |
US201114354278 |
申请日期 |
2011.10.27 |
申请人 |
NXP USA, Inc. |
发明人 |
Givelin Philippe;Bernon-Enjalbert Valerie;Founaud Guillaume |
分类号 |
H02J7/00;H02J9/06;B60R21/017;B60T8/88 |
主分类号 |
H02J7/00 |
代理机构 |
|
代理人 |
Jacobsen Charlene R. |
主权项 |
1. A power safety circuit, comprising
a power sense terminal; an output terminal; an output driver unit connected to said output terminal; an input terminal connectable to receive a first power from a power source and arranged to supply said first power to said output driver unit; and a power detection unit arranged to detect a state of said input terminal and provide a power sense signal to said power sense terminal, wherein said power sense terminal is arranged to supply a second power to said output driver unit when said power sense signal indicates that a level of said first power is below a minimum level for driving said output terminal, and wherein a level of said second power is lower than said level of said first power. |
地址 |
Austin TX US |