A 28 nm FDSOI Integrated Reconfigurable Switched-Capacitor Based Step-Up DC-DC Converter With 88% Peak Efficiency

Biswas, Avishek; Sinangil, Yildiz; Chandrakasan, Anantha P.

doi:10.1109/jssc.2015.2416315

Cited by 28 publications

(4 citation statements)

References 15 publications

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“…The main limitations of these converters is their inefficiency in transferring charge; therefore, several studies try to improve the voltage gain in every stage and to investigate the energy consumption [10][11][12][13][14][15]. Regarding the classical Dickson charge pump (shown in Figure 4), the main novelty of the recent architectures lies in the use of pass transistors (switches) instead of diode-connected MOS, and/or in more complex timing schemes, as in [10,15,16], or in more expensive technologies like the Silicon On Insulator, which presents several advantages for low-voltage applications [17]. In Figure 5, the charge pump presented in [16] is shown, as an example of the effort to improve the switched capacitor circuits: it is based on the well-known Favrat architecture [18] and it is basically a cascade of simple two-phase voltage doubler.…”

Section: Circuital Architectures Of the Main Converters' Topologies Used In Iotmentioning

confidence: 99%

A Review of Fully Integrated and Embedded Power Converters for IoT

2021

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The Internet of Things (IoT) has found application in many components of implantable medical devices, wearable smart devices, monitoring systems, etc. The IoT devices are conventionally battery powered, even though, in several low power applications, they can also be powered using energy harvesting technology. Independently of the power sources (if batteries or environment), efficient and robust power converters must be designed to provide the small and distributed energy required by such IoT devices. This review paper will first provide an overview about the power consumption in IoT devices; second, it will discuss the most recent research and advance in the field of fully-integrated or embedded DC/DC converters, starting from high-performance integrated charge pumps or embedded inductive boost converters for specific harvesting sources (temperature, solar, and so on), to novel DC/DC converters for multiple energy sources.

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Section: Circuital Architectures Of the Main Converters' Topologies Used In Iotmentioning

confidence: 99%

A Review of Fully Integrated and Embedded Power Converters for IoT

2021

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“…Switched capacitor converters (SCCs) have been well studied to alleviate this problem. This approach offers easier on-chip integration thanks to the high capacitance density in recent CMOS technologies [2], [11]. However, SCCs also have different drawbacks such as efficiency dependence on conversion ratio and large input current pulse i.e.…”

Section: B Converter Topology In the Second Stagementioning

confidence: 99%

“…The above assumptions are chosen to analyze the maximal efficiency achievable by the two technologies under the same constraints. Our aim is to avoid a table comparing previous published work using heterogeneous technologies (MIM, deep trench, SOI) under different constraints (load current profile, input voltage, die area) [11], [1]. On the one hand, the key advantage of these tables is to access the achievable efficiency in practice.…”

Section: H Limitations and Strengths Of This Analysismentioning

confidence: 99%

3D ICs: An opportunity for fully-integrated, dense and efficient power supplies

Pillonnet

Jeanniot

Vivet

2015

2015 International 3D Systems Integration Conference (3DIC)

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With 3D technologies, the in-package solution allows integrated, efficient and granular power supplies to be designed for multi-core processors. As the converter design obtains few benefits from the scaling, 3DIC allows the best technology to be chosen i.e. one which suits the DC-DC converter design. This paper evaluates the achievable power efficiency between on-die and in-package converters using a combination of active (28 and 65nm CMOS nodes) and passive (poly, MIM, vertical capacitor) layers. Based on the same load power consumption, on-die and in-package switched capacitor converters achieve 65% and 78% efficiency, respectively, in a 1mm 2 silicon area. An additional high density capacitance layer (100nF/mm 2) improves efficiency by more than 20 points in 65nm for the same surface which emphasizes the need for dedicated technology for better power management integration. This paper shows that in-package power management is a key alternative for fully-integrated, dense and efficient power supplies.

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“…This technology greatly improves the boost speed and conversion efficiency of the charge pump. The use of a simple common drain gate source follower enhances the load ability of the charge pump, resulting in an output ripple of less than 0.1mV, which greatly reduces the output ripple [3] .…”

Section: Introductionmentioning

confidence: 99%

A low-ripple fast boosting CMOS charge pump design

cheng,

Deng

2024

Third International Conference on Electronic Information Engineering, Big Data, and Computer Technology (EIBDCT 2024)

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A low ripple fast boost CMOS charge pump is designed for charging mobile phones. The charge pump has the advantages of low power consumption, low cost, and simple circuit. In the design of the charge pump, in order to improve its boosting speed, voltage boosting circuits for pre-charging the charging node and substrate automatic following circuits to overcome the substrate effect of field-effect transistors are designed separately; And the simple common drain amplifier is used to reduce the charge pump's output ripple effectively. Based on CSMC 0.5 μm process and Dickson charge pump, a clock generation circuit, a charge pump circuit, a voltage regulation circuit, a pre-charging circuit, a substrate effect elimination circuit, and a common drain amplifier are designed. The charge pump circuits are designed and simulated by cadence. The simulation results show that the static current of the circuit is a few μA, the input voltage range is from 1V to 3V, and the output voltage is 4V. And the boosting time is below 100 μs, the ripple is less than 1mV, and when the input voltage is 1V, the static power consumption is only 0.3mW.

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A 28 nm FDSOI Integrated Reconfigurable Switched-Capacitor Based Step-Up DC-DC Converter With 88% Peak Efficiency

Cited by 28 publications

References 15 publications

A Review of Fully Integrated and Embedded Power Converters for IoT

A Review of Fully Integrated and Embedded Power Converters for IoT

3D ICs: An opportunity for fully-integrated, dense and efficient power supplies

A low-ripple fast boosting CMOS charge pump design

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