High-voltage IO drivers
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United States of America
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Sep 10, 2024
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N/A
app pub date -
Feb 7, 2023
filing date -
Feb 7, 2023
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Abstract
A voltage driver for supplying a supply voltage includes multiple PMOS transistors, multiple NMOS transistors, a pad, impedance divider circuits, NMOS clampers, and PMOS clampers. A maximum of the supply voltage is N times a maximum of the drain-source voltage of each transistor. The pad is configured to receive a voltage signal for dynamically controlling gates of a subset of the NMOS transistors and a subset of the PMOS transistors. The impedance divider circuits are configured to generate limited voltage signals, each of which is a fraction of voltage between the pad and supply voltage or between the pad and ground. The NMOS clampers and PMOS clampers configured to receive reference voltages and limited voltage signals to generate output, which is in turn input into gate terminals of the subset of NMOS or PMOS transistors.
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