Power efficiency evaluation in Dickson and voltage doubler charge pump topologies

Baderna, D.; Cabrini, A.; Pasotti, M.; Torelli, G.

doi:10.1016/j.mejo.2005.12.013

Cited by 20 publications

(3 citation statements)

References 12 publications

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“…To prove that, the power losses of a charge pump are going to be considered. Specifically, the most relevant power losses terms of a voltage doubler are the dynamic (𝑃 𝑑𝑦𝑛 ), resistive (𝑃 𝑟𝑒𝑠 ) and static (𝑃 𝑠𝑡𝑎 ) losses [16]. Each of these terms can be modeled as:…”

Section: Mathematical Modelmentioning

confidence: 99%

Maximum Output Power Point Tracking for Photovoltaic Energy Harvesting Systems: Mathematical Model and Circuit Implementation

Vicente-García,

Pereira-Rial,

López-Martínez

2023

Preprint

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Section: Mathematical Modelmentioning

confidence: 99%

Maximum Output Power Point Tracking for Photovoltaic Energy Harvesting Systems: Mathematical Model and Circuit Implementation

Vicente-García,

Pereira-Rial,

López-Martínez

2023

Preprint

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“…In the case of linear CPs with n cascaded stages and in the presence of non‐zero top‐plate parasitic capacitances the CP voltage gain a lin ( n ) and the equivalent output resistance r o,lin ( n ) can be expressed as [5, 22]

a_{lin} false(n false) = \frac{n}{1 + β} + 1, r_{o, lin} (n) = \frac{n^{2}}{1 + β}

while the normalised input conductance g i,lin ( n ) can expressed as [24]

g_{normali, lin} = \frac{α + β + α β}{1 + β}

By including these values in the expressions of γ and x t , it is possible to obtain the required expression of F ( n ) in (20) for the considered design case. Fig.…”

Section: Case Study Ii: Linear Charge Pump Designmentioning

confidence: 99%

Integrated charge pumps: a generalised method for power efficiency optimisation

Cabrini

Gregori²,

Torelli

2016

IET Circuits, Devices & Systems

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Charge pumps (CPs) represent the most common solution for the implementation of fully integrated DC-DC converters. In fact, as opposed to buck/boost DC-DC converters, that need at least an external inductor, charge pump circuits do not require any external component. However, the achievable power efficiency of these circuits is typically significantly lower than power efficiency of buck/boost DC-DC converters. In this study, we develop a general mathematical model of CPs, aiming to provide basic design considerations for power efficiency optimisation. A quality factor for achievable power efficiency is proposed together with guidelines for the design of efficiency-optimised CPs under the constraint of given output voltage and current values.

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“…Due to the existence of threshold voltage drop and body-effect limitation in Dickson model, improvements are studied to attain better performance, such as floating-well method to lessen body effect, NCP-2 to decrease influence of threshold voltage, cross coupled charge pump and complicated clock control to improve its efficiency [6][7][8][9][10][11]. Compared with Dickson charge pump, voltage doubler charge pump topology gets higher efficiency [12].…”

Section: Introductionmentioning

confidence: 99%

Design of Charge Pump for Inertial Sensor Drive Circuit

Yao

Zhang

Gao

et al. 2014

KEM

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A transistor-level circuit design of charge pump is introduced to drive the inertial device. The design is made of several big modules, including main charge pump module, band gap reference module, comparator module, oscillating module, control module, temperature protection module. A three-stage charge pump is applied to achieve 5 V to 18 V DC/DC conversion, and each stage uses the cross coupled charge pump circuit, taking body effect, threshold voltage drop and efficiency into account. Considering efficiency and power consumption, the band gap reference module adopts a self-biased op amp. To make the comparator transient response fast, the op amp cascades two inverters. The temperature protection module sets a maximum temperature to protect the charge pump. The control module is composed of a data selector, a two-phase non-overlap clock circuit and a frequency divider to optimize clock signal. Then simulations are given and the charge pump is analyzed, finally the efficiency of charge pump is calculated. Designed in CSMC 0.5um process, the charge pump has an efficiency of 87.63 percent, a 19.85V output voltage, a 100 mA output current, and 6.05mV ripple.

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Power efficiency evaluation in Dickson and voltage doubler charge pump topologies

Cited by 20 publications

References 12 publications

Maximum Output Power Point Tracking for Photovoltaic Energy Harvesting Systems: Mathematical Model and Circuit Implementation

Maximum Output Power Point Tracking for Photovoltaic Energy Harvesting Systems: Mathematical Model and Circuit Implementation

Integrated charge pumps: a generalised method for power efficiency optimisation

Design of Charge Pump for Inertial Sensor Drive Circuit

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