| Autor: |
Easwaran, Sri Navaneeth, Chellamuthu, Shanmuganand, Venugopal, Sunil Kashyap, Weigel, Robert |
| Zdroj: |
IEEE Transactions on Circuits & Systems. Part II: Express Briefs; Jan2018, Vol. 65 Issue 1, p11-15, 5p |
| Abstrakt: |
In systems-on-chip there are multiple supply voltage (MSV) designs in which a module is powered by several supply rails. For example, these rails are at 40, 5, and 3.3 V. A safe biasing scheme is needed to ensure no tri-stated biasing conditions can exist, which can result in unintended activation of the power stages or output drivers leading to high currents. It is shown here a safe biasing scheme can be implemented under any power sequencing scheme in MSV designs by exploiting the voltage and current selector topologies. This circuit was implemented in a 40-V, 0.35- \mu \mathrm m , BiCMOS process on a four-channel airbag squib driver IC. The fabricated circuit’s quiescent current is less than 5 mA even if the on chip junction temperature is 175 °C and for various fault conditions that can occur in a multiple power supply domain. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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