发明名称 |
Smart power integrated circuit with dynamic isolation |
摘要 |
A smart power integrated circuit with dynamic isolation. A P-type isolation region surrounds the small signal devices (npn bipolar transistors and possibly other devices). This isolation region is held at ground in normal operation; but one or more pilot circuits continually monitor the collector voltages of the small-signal and power npn transistors, and instantly reconnect this isolation region, in real time, to the lowest collector voltage, whenever any of the collector voltages go below ground. Preferably a large capacitor provides a dedicated supply to the pilot circuit, so that the reconnection operation can proceed even when a power supply glitch occurs.
|
申请公布号 |
US5475273(A) |
申请公布日期 |
1995.12.12 |
申请号 |
US19920987768 |
申请日期 |
1992.12.07 |
申请人 |
PAPARO, MARIO;ZAMBRANO, RAFFAELE |
发明人 |
PAPARO, MARIO;ZAMBRANO, RAFFAELE |
分类号 |
H01L29/78;H01L21/76;H01L27/02;H01L27/04;H01L27/06;H01L27/08;H01L27/088;(IPC1-7):H03K3/01 |
主分类号 |
H01L29/78 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|