Publication

Miniaturized Dual 400 mV LDO Regulators with 7.3-21.5 nA Quiescent Current for Biomedical Implants

2025

Abstract

This paper presents two ultra-miniaturized and ultra-low-power Low-Dropout (LDO) regulators, implemented using Folded-Cascode (FC) and Two-Stage (TO) Operational Transconductance Amplifier (OTA) topologies. Both designs deliver a 400 mV output, operating in the weak inversion region to significantly minimize power consumption. A bulk-driven input approach is employed to enhance the input common-mode range (ICMR) for stable operation. The TO-based LDO achieves 23.4 mV/V line sensitivity, 33 μs Transient Response (TR), 21.5 nA quiescent current, and 11.0 μm × 30.8 μm area, demonstrating fast dynamic response and efficient regulation within a small footprint. In contrast, the FC-based LDO reduces the quiescent current to 7.3 nA with 31.8 mV/V line sensitivity, 1.9 ms TR, and 11.9 μm × 131.4 μm area, favoring applications where static power is prioritized over transient speed. These designs demonstrate an optimal balance between area, power, and regulation performance, making them highly suitable for biosensor and implantable device applications.

Official source

https://infoscience.epfl.ch/entities/publication/7e94fb01-a47a-4093-bf23-fd7996ce9db1

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

2025

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/7e94fb01-a47a-4093-bf23-fd7996ce9db1

About this result

Related concepts (32)

Operational amplifier

An operational amplifier (often op amp or opamp) is a DC-coupled high-gain electronic voltage amplifier with a differential input and, usually, a single-ended output. In this configuration, an op amp produces an output potential (relative to circuit ground) that is typically 100,000 times larger than the potential difference between its input terminals. The operational amplifier traces its origin and name to analog computers, where they were used to perform mathematical operations in linear, non-linear, and frequency-dependent circuits.

Static core

In integrated circuit design, static core generally refers to a microprocessor (MPU) entirely implemented in static logic. A static core MPU may be halted by stopping the system clock oscillator that is driving it, maintaining its state and resume processing at the point where it was stopped when the clock signal is restarted, as long as power continues to be applied.

Amplifier

An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or current). It is a two-port electronic circuit that uses electric power from a power supply to increase the amplitude (magnitude of the voltage or current) of a signal applied to its input terminals, producing a proportionally greater amplitude signal at its output. The amount of amplification provided by an amplifier is measured by its gain: the ratio of output voltage, current, or power to input.

Related publications (2)

Miniaturized Dual 400 mV LDO Regulators with 7.3-21.5 nA Quiescent Current for Biomedical Implants

Chat with Graph Search

Operational Mode Analysis of the Isolated Three-Phase DC/DC Converter

Development of a versatile low-power 24 GHz phased array front-end in 90 nm CMOS technology