An on-chip voltage regulator with improved load regulation and light load power efficiency

2006 ◽  
Author(s):  
R.G. Raghavendra ◽  
P. Mandal
Keyword(s):  
Power Efficiency ◽  
Voltage Regulator ◽  
Load Power ◽  
Light Load ◽  
Load Regulation ◽  
On Chip

scholarly journals Full On-chip low dropout voltage regulator with an enhanced transient response for low power systems

2019 ◽  
Vol 9 (6) ◽  
pp. 4637 ◽  
Author(s):  
Hatim Ameziane ◽  
Kamal Zared ◽  
Hicham Akhamal ◽  
Hassan Qjidaa
Keyword(s):  
Power Systems ◽  
Transient Response ◽  
System Integration ◽  
Cmos Technology ◽  
Voltage Regulator ◽  
Fast Transient Response ◽  
Ground Current ◽  
Load Regulation ◽  
On Chip ◽  
Fast Settling

<span>A full on chip low Dropout Voltage Regulator (LDO) with fast transient response and small capacitor compensation circuit is proposed. The novel technique is implemented to detect the variation voltage at the output of LDO and enable the proposed fast detector amplifier (FDA) to improve load transient response of 50mA load step. The large external capacitor used in Conventional LDO Regulators is removed allowing for greater power system integration for system-on-chip (SoC) applications. The 1.6-V Full On-Chip LDO voltage regulator with a power supply of 1.8 V was designed and simulated in the 0.18µm CMOS technology, consuming only 14 µA of ground current with a fast settling-time LNR(Line Regulation) and LOR(Load regulation) of 928ns and 883ns respectively while the rise and fall times in LNR and LOR is 500ns.</span>

Design of a High-Precision Flyback Constant Voltage AC–DC Converter

2017 ◽  
Vol 26 (11) ◽  
pp. 1750175
Author(s):  
Changyuan Chang ◽  
Chao Hong ◽  
Yang Xu ◽  
Hailong Sun ◽  
Yao Chen
Keyword(s):  
High Precision ◽  
Output Voltage ◽  
Control Method ◽  
Switching Frequency ◽  
Constant Voltage ◽  
Light Load ◽  
Wave Generator ◽  
Load Regulation ◽  
High Output

A constant voltage AC–DC converter based on the digital assistant technology is proposed in this paper, which has the advantage of high output precision. In this paper, a novel digital exponential wave generator is adopted in Constant Voltage (CV) mode to replace the normal triangle waveform to obtain a wider range of switching frequency, increasing the accuracy of output voltage under light load. The control chip is implemented based on NEC 1[Formula: see text][Formula: see text]m 5[Formula: see text]V/40[Formula: see text]V HVCMOS process, and a 5[Formula: see text]V/1.2[Formula: see text]A prototype has been built to verify the proposed control method. In PFM mode the deviation of output voltage is within [Formula: see text]% and the load regulation is [Formula: see text]%. Meanwhile, when the load jumps from light to heavy, the minimum output voltage could be maintained above 4.16[Formula: see text]V.

A CMOS SiC Linear Voltage Regulator for High Temperature Applications

2016 ◽  
Vol 2016 (HiTEC) ◽  
pp. 000106-000111 ◽  
Author(s):  
R.C. Murphree ◽  
S. Ahmed ◽  
M. Barlow ◽  
A. Rahman ◽  
H.A. Mantooth ◽  
...  
Keyword(s):  
Feedback Loop ◽  
Input Voltage ◽  
Voltage Regulator ◽  
Voltage Reference ◽  
Frequency Compensation ◽  
Error Amplifier ◽  
Linear Regulator ◽  
Load Regulation ◽  
Pass Transistor ◽  
Linear Voltage

Abstract This paper establishes the first linear regulator in a 1.2 μm CMOS silicon carbide (SiC) process. The linear regulator presented consists of a SiC error amplifier and a pass transistor which has a W/L = 70,000 μm / 1.2 μm. The feedback loop is internal and the frequency compensation network is a combination of internal and external components. As a result of potential process variation in this emerging technology, the voltage reference used at the negative input terminal of the error amplifier has been made external. With an input voltage of 20 V to 30 V, the voltage regulator is able to provide a 15 V output and a continuous load current of 100 mA at temperatures ranging from 25 °C to over 400 °C. At a temperature of 400 °C, testing of the fabricated circuit has shown line regulation of less than 4 mV/V. Under the same test conditions, a load regulation of less than 420 mV/A is achieved.

A Light-Load Efficient Fully Integrated Voltage Regulator in 14-nm CMOS With 2.5-nH Package-Embedded Air-Core Inductors

2019 ◽  
Vol 54 (12) ◽  
pp. 3316-3325 ◽  
Author(s):  
Christopher Schaef ◽  
Kaladhar Radhakrishnan ◽  
Krishnan Ravichandran ◽  
James W. Tschanz ◽  
Vivek De ◽  
...  
Keyword(s):  
Voltage Regulator ◽  
Fully Integrated ◽  
Light Load ◽  
Air Core

Autotuning of Integrated Inductive Voltage Regulator Using On-Chip Delay Sensor to Tolerate Process and Passive Variations

2019 ◽  
Vol 27 (8) ◽  
pp. 1768-1778 ◽  
Author(s):  
Venkata Chaitanya Krishna Chekuri ◽  
Monodeep Kar ◽  
Arvind Singh ◽  
Saibal Mukhopadhyay
Keyword(s):  
Voltage Regulator ◽  
On Chip
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