公开(公告)号：US12153457B2

公开(公告)日：2024-11-26

申请号：US18137387

申请日：2023-04-20

Applicant: XILINX, INC.

Inventor： Lakshmi Venkata Satya Lalitha Indumathi Janaswamy ,  Sree Rama Krishna Chaithnya Saraswatula ,  Santosh Yachareni ,  Anil Kumar Kandala ,  Narendra Kumar Pulipati ,  Shidong Zhou

IPC: G05F1/46 ,  G05F1/56

Abstract: A cascaded thin-oxide N-Well voltage steering circuit includes a reference voltage generator that outputs a reference voltage within a range of first and second supply voltages, a first voltage steering circuit that outputs a higher available one of the reference voltage and the second supply voltage as an interim voltage, and a second voltage steering circuit that outputs a higher available one of the first voltage and the interim voltage at an output of the second voltage steering circuit. The interim voltage is applied to N-wells of PMOS transistors of the first voltage steering circuit. The output of the second voltage steering circuit is applied to N-wells of PMOS transistors of the second voltage steering circuit. The output of the second voltage steering circuit may also be applied to N-wells of PMOS transistors of other circuitry. The cascaded thin-oxide N-Well voltage steering circuit may consist substantially of thin-oxide PMOS transistors.