| Autor: |
Lu, Yu, Cai, Xiaowu, Lu, Jian, Pan, Longli, Dang, Jianying, Xie, Yafei, Wang, Xupeng, Li, Bo |
| Zdroj: |
IEEE Transactions on Very Large Scale Integration Systems; November 2024, Vol. 32 Issue: 11 p1993-2000, 8p |
| Abstrakt: |
In digital integrated circuits with multiple power domains, level shifters (LSs) are essential circuit elements that can transform the voltage region from low to high. However, high-frequency gate drivers can generate hundreds of voltages per nanosecond noise (high dV/dt noise). Such high dV/dt noise can cause malfunction of a conventional pulse-triggered cross-coupled LS (CCLS) that is used to control the high-side nMOS switch. In this article, a novel LS with noise immunity is proposed and investigated. Compared with the conventional resistor load LS, the proposed circuit adopts nMOS-R cross-coupled (NRCC) LS, and realizes the selective filtering ability by exploiting the path that filters out the noise introduced by the dV/dt. The high-voltage gate drive integrated circuit (HVIC) is implemented using a 600 V silicon-on-insulator (SOI) BCD process. Analyses and experiments show that the proposed design can help the HVIC maintain a high common-mode transient immunity (CMTI) of up to 137 V/ns while allowing a negative VS swing down to -9.4 V under a 15 V supply voltage. Compared with the traditional HVIC with resistance load LS, the proposed novel HVIC with the NRCC LS improves the noise immunity of dV/dt by 182%. |
| Databáze: |
Supplemental Index |
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