Fibonacci charge pump design, test and measurement

Matoušek, David; Subrt, O.; Hospodka, Jiří

doi:10.23919/measurement.2017.7983554

Cited by 5 publications

(11 citation statements)

References 4 publications

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“…Proposed variant of the charge pump [8] uses the 2-phase clock. One cell as the basic building block of this charge pump is shown in Fig.1.…”

Section: Subject and Methodsmentioning

confidence: 99%

“…PER is the period of both clock signals. The optimal W1, W2 values for the best ratio between the output voltage and resulted efficiency were estimated in the previous contribution [8] as W1 = 24 ns and W2 = 10 ns for PER = 50 ns. …”

Section: Subject and Methodsmentioning

confidence: 99%

“…The W/L of used transistors: The MOSFETs M3 to M5 and MD used for transfer charge should have conductance at least ten times higher than conductance matched to the output current [2], thus their initial size must be estimated from I-V characteristics [8]. The MOSFETs M1 to M2 may cause losses of charge, but these MOSFETs are used for driving transistor M5 only.…”

Section: A Proposed Design Algorithmmentioning

confidence: 99%

“…The MOSFETs M1 to M2 may cause losses of charge, but these MOSFETs are used for driving transistor M5 only. Therefore, these transistors may be relatively narrow [8].…”

Section: A Proposed Design Algorithmmentioning

confidence: 99%

“…The optimal timing parameters: The optimal timing parameters for clock frequency fCLK = 20 MHz were estimated in previous contribution [8] as W1 = 24 ns and W2 = 10 ns for PER = 50 ns. For other values of frequency, the timing parameters must be proportionally changed according to Table 3.…”

Section: A Proposed Design Algorithmmentioning

confidence: 99%

See 4 more Smart Citations

Efficiency of Innovative Charge Pump versus Clock Frequency and MOSFETs Sizes

Matoušek

Hospodka

Subrt

2016

Measurement Science Review

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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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“…Proposed variant of the charge pump [8] uses the 2-phase clock. One cell as the basic building block of this charge pump is shown in Fig.1.…”

Section: Subject and Methodsmentioning

confidence: 99%

Section: Subject and Methodsmentioning

confidence: 99%

Section: A Proposed Design Algorithmmentioning

confidence: 99%

“…The MOSFETs M1 to M2 may cause losses of charge, but these MOSFETs are used for driving transistor M5 only. Therefore, these transistors may be relatively narrow [8].…”

Section: A Proposed Design Algorithmmentioning

confidence: 99%

Section: A Proposed Design Algorithmmentioning

confidence: 99%

See 3 more Smart Citations

Efficiency of Innovative Charge Pump versus Clock Frequency and MOSFETs Sizes

Matoušek

Hospodka

Subrt

2016

Measurement Science Review

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3-V Input, 70-V Output, Fully Integrated Hybrid Charge Pump

Pulvirenti¹

2022

IEEE Access

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A novel integrated-circuit charge-pump (CP) voltage multiplier conceived for high multiplying factors is proposed. The solution exploits a mixed architecture which merges both Cockcroft-Walton and Dickson topologies, by using on-chip 12-V poly-poly capacitors and 3.3-V CMOS transistors, maximizing the output voltage at the minimum silicon size. The proposed CP has been designed to supply a fully integrated driver for miniaturized motors in Micro Electro Mechanical Systems (MEMS) technology. It is conceived to boost the power-supply voltage to values higher than those that either a Dickson (D), Fibonacci (F), Cockroft-Walton (CW) or Serial-Parallel (SP) fully integrated CPs can generate in the selected technology process. Indeed, the output voltage of the former two CPs is limited by voltage constraints of on-chip capacitors while the multiplication efficiency of the latter two is impacted by high values of on-chip stray capacitors. Specifically, the target > 70 V output voltage has to be internally generated starting from the provided minimum power-supply voltage of 3 V. Furthermore, a mathematical model is proposed to evaluate the open load output voltage and the equivalent output resistance.

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Output voltage and efficiency of novelty architecture of charge pump versus clock frequency and MOSFETs sizes

Matoušek

Hospodka

Subrt

2016

2016 International Conference on Applied Electronics (AE)

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Charge pump is circuit that produces voltage higher than supply voltage or negative voltage. Today, charge pumps became an essential parts of electronic equipment. The integration of charge pumps directly into the target system allows manufacturers to feed a complex system with many specific power requirements from a single source. However, charge pump efficiency is relatively small. This paper is devoted to questions of efficiency of presented variant of charge pump. Thus efficiency as dependence on number of stages, clock frequency, output current and MOSFETs sizes of presented charge pump was simulated. The aim of this study is determination of MOSFETs sizes and theirs influence to efficiency and output voltage. Complex optimization of this circuit will follow in the next period.

show abstract

Fibonacci charge pump design, test and measurement

Cited by 5 publications

References 4 publications

Efficiency of Innovative Charge Pump versus Clock Frequency and MOSFETs Sizes

Efficiency of Innovative Charge Pump versus Clock Frequency and MOSFETs Sizes

3-V Input, 70-V Output, Fully Integrated Hybrid Charge Pump

Output voltage and efficiency of novelty architecture of charge pump versus clock frequency and MOSFETs sizes

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