Charge Pumps for LCD Drivers

Cristaldi, David J.R.; Pennisi, S.; Pulvirenti, Francesco

doi:10.1007/978-90-481-2255-4_7

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Case Study Ii: Linear Charge Pump Design1

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2016

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“…As an example, let us consider the design of a linear CP operating in SSC for integrated LCD display drivers [8, 9, 23] having the following target specifications: v ot = 15 V, i ot = 200 μA, input DC voltage v i = 1.8 V. Let us also assume that parasitic capacitance coefficients are α = 0.03, β = 0.02.…”

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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Section: Case Study Ii: Linear Charge Pump Designmentioning

confidence: 99%