Phase Frequency Detector and Charge Pump for Low Jitter PLL Applications

In this paper a new technique is presented to improve the jitter performance of conventional phase frequency detectors by completely removing the unnecessary one-shot pulse. This technique uses a variable pulse-height circuit to control the unnecessary one-shot pulse height. In addition, a novel charge-pump circuit with perfect current-matching characteristics is used to improve the output jitter performance of conventional charge pumps. This circuit is composed of a pair of symmetrical pump circuits to obtain a good current matching. As a result, the proposed charge-pump circuit has perfect current-matching characteristics, wide output range, no glitch output current, and no jump output voltage. In order to verify such operation, circuit simulation is performed using 0.18 μm CMOS process parameters.

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Failure Analysis and Radiation-Enabled Circuit Simulation of a Dual Charge Pump Circuit

IEEE Transactions on Nuclear Science ◽

10.1109/tns.2010.2079951 ◽

2010 ◽

Cited By ~ 3

Author(s):

Garrett James Schlenvogt ◽

Hugh J. Barnaby ◽

Ivan S. Esqueda ◽

Keith E. Holbert ◽

Jeff Wilkinson ◽

...

Keyword(s):

Failure Analysis ◽

Circuit Simulation ◽

Charge Pump ◽

Charge Pump Circuit

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Low‐jitter spread spectrum clock generator using charge pump frequency detector in 0.18 μm CMOS for USB3.1 transceivers

IET Circuits Devices & Systems ◽

10.1049/iet-cds.2016.0445 ◽

2017 ◽

Vol 12 (1) ◽

pp. 99-107

Author(s):

Shamin Sadrafshari ◽

Razieh Eskandari ◽

Khayrollah Hadidi ◽

Abdollah Khoei

Keyword(s):

Spread Spectrum ◽

Charge Pump ◽

Clock Generator ◽

Pump Frequency ◽

Low Jitter ◽

Frequency Detector

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A novel adaptive hysteresis DC-DC buck converter for portable devices

TURKISH JOURNAL OF ELECTRICAL ENGINEERING & COMPUTER SCIENCES ◽

10.3906/elk-1809-45 ◽

2019 ◽

pp. 807-818 ◽

Cited By ~ 1

Author(s):

SUNG SIK PARK ◽

JU SANG LEE ◽

SANG DAE YU

Keyword(s):

Circuit Simulation ◽

Reverse Current ◽

Buck Converter ◽

Portable Devices ◽

Cmos Process ◽

Load Current ◽

Current Sensing ◽

Zero Current ◽

Detection Circuit ◽

A New Technique

This paper presents a new technique that adjusts the hysteresis window depending on the variations in load current caused by a voltage-mode circuit to reduce the voltage and current ripples. Moreover, a compact current-sensing circuit is used to provide an accurate sensing signal for achieving fast hysteresis window adjustment. In addition, a zero-current detection circuit is also proposed to eliminate the reverse current at light loads. As a result, this technique reduces the voltage ripple below 8.08 mVpp and the current ripple below 93.98 mApp for a load current of 500 mA. Circuit simulation is performed using 0.18 μm CMOS process parameters.

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New Discrete Fibonacci Charge Pump Design, Evaluation and Measurement

Measurement Science Review ◽

10.1515/msr-2017-0013 ◽

2017 ◽

Vol 17 (3) ◽

pp. 100-107 ◽

Cited By ~ 2

Author(s):

David Matoušek ◽

Jiří Hospodka ◽

Ondřej Šubrt

Keyword(s):

Printed Circuit Board ◽

Charge Pump ◽

Circuit Board ◽

Design Evaluation ◽

Clock Frequency ◽

Pump Design ◽

Charge Pumps ◽

Printed Circuit ◽

Variable Power ◽

Charge Pump Circuit

AbstractThis paper focuses on the practical aspects of the realisation of Dickson and Fibonacci charge pumps. Standard Dickson charge pump circuit solution and new Fibonacci charge pump implementation are compared. Both charge pumps were designed and then evaluated by LTspice XVII simulations and realised in a discrete form on printed circuit board (PCB). Finally, the key parameters as the output voltage, efficiency, rise time, variable power supply and clock frequency effects were measured.

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Notice of Violation of IEEE Publication Principles: A 2-5GHz low jitter 0.13 μm CMOS PLL using a dynamic current matching charge-pump and a noise attenuating loop-filter [frequency synthesizer application]

Proceedings of the IEEE 2004 Custom Integrated Circuits Conference (IEEE Cat. No.04CH37571) ◽

10.1109/cicc.2004.1358760 ◽

2004 ◽

Cited By ~ 1

Author(s):

A. Maxim

Keyword(s):

Frequency Synthesizer ◽

Charge Pump ◽

Loop Filter ◽

Current Matching ◽

Low Jitter ◽

Filter Frequency

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Optimized Charge Pump and Nonlinear Phase Frequency Detector for a Ka-Band Phase-Locked Loop in 90-nm CMOS Process

IEICE Transactions on Electronics ◽

10.1587/transele.2019ecp5007 ◽

2019 ◽

Vol E102.C (11) ◽

pp. 825-832

Author(s):

Lu TANG ◽

Zhigong WANG ◽

Tiantian FAN ◽

Faen LIU ◽

Changchun ZHANG

Keyword(s):

Charge Pump ◽

Phase Locked Loop ◽

Cmos Process ◽

Ka Band ◽

Phase Frequency Detector ◽

Nonlinear Phase ◽

Frequency Detector

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Design of charge pump circuit in low-voltage CMOS process with suppressed return-back leakage current

2010 IEEE International Conference on Integrated Circuit Design and Technology ◽

10.1109/icicdt.2010.5510271 ◽

2010 ◽

Cited By ~ 5

Author(s):

Yi-Hsin Weng ◽

Hui-Wen Tsai ◽

Ming-Dou Ker

Keyword(s):

Leakage Current ◽

Low Voltage ◽

Charge Pump ◽

Cmos Process ◽

Charge Pump Circuit

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Efficiency of Innovative Charge Pump versus Clock Frequency and MOSFETs Sizes

Measurement Science Review ◽

10.1515/msr-2016-0032 ◽

2016 ◽

Vol 16 (5) ◽

pp. 260-265 ◽

Cited By ~ 2

Author(s):

David Matoušek ◽

Jiří Hospodka ◽

Ondřej Šubrt

Keyword(s):

Output Voltage ◽

Supply Voltage ◽

Charge Pump ◽

Specific Power ◽

Pump Efficiency ◽

Clock Frequency ◽

Output Current ◽

Charge Pumps ◽

Complex Optimization ◽

Charge Pump Circuit

Abstract Charge pumps are circuits that produce the voltage higher than supply voltage or negative voltage. Today, charge pumps became an integral part of the electronic equipment. The integration of charge pumps directly into the system allows manufacturers to feed a complex system with many specific power requirements from a single source. However, charge pump efficiency is reduced by many phenomena. This paper is focused on the question of efficiency of proposed variant of the charge pump. In this article, the efficiency dependence on a number of stages, output current, clock frequency and MOSFETs sizes was simulated by Eldo. The aim of this study is to determine the MOSFETs sizes and theirs influence to efficiency and the output voltage. Complex optimization of the charge pump circuit will follow in further text.

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