公开(公告)号：US20250023466A1

公开(公告)日：2025-01-16

申请号：US18350316

申请日：2023-07-11

Applicant: GlobalFoundries U.S. Inc.

Inventor： Siva Kumar Chinthu ,  Palle Sundar Veerendranath ,  Venu Gopal Reddy Ara ,  Abdul Rajak

IPC: H02M3/07 ,  H03K19/0185

Abstract: A disclosed charge pump includes first and second stages and, optionally, additional stage(s). The first stage receives a voltage input (Vin) at a first voltage (V1), CLK1 (GND, V1), and CLK1B (V1, GND), and outputs a first stage voltage output (Vout1) at a second voltage (V2) double V1. A second stage receives Vout1, CLK2 (V1, V2), and CLK2B (V2, V1, and outputs a second stage voltage output (Vout2) at a third voltage (V3) essentially triple V1, and so on. A clock driver supplies CLK1-CLK1B to the first stage and to a clock generator. The clock generator includes: a voltage level shifter, which receives CLK1 and CLK1B and outputs multiple level-shifted voltage output pulses; and a driving circuit, which receives specific ones of the output voltage pulses and outputs CLK2 and CLK2B to the second stage and, if needed, additional voltage level-shifted clock signal-inverted clock signal pairs to any additional stages.