Current‐mode body‐biased switch to increase performance of linear charge pumps

Abstract

Summary This letter introduces a novel scheme to improve charge transfer switches in linear charge pumps. The proposed approach relies on the reduction of the threshold voltage of the transistor implementing each charge transfer switch by forcing a current into its bulk junction. Simulation results using a 130‐nm standard complementary metal‐oxide semiconductor (CMOS) technology confirm the effectiveness of the proposed method.

Harvesting circuits for triboelectric nanogenerators for wearable applications

“…Inductors are suitable for high power applications but require bulky components also presenting reduced scalability (Seeman et al, 2010). For low-power low-area applications, capacitor-based converters are a better alternative because they can be fully on-chip integrated and used for a voltage gain higher than one Ballo, 2020;Ballo et al, 2020).…”

A Review of Power Management Integrated Circuits for Ultrasound-Based Energy Harvesting in Implantable Medical Devices

“…Moreover, magnetic components strongly reduces scalability and compactness of the IMD, making it unsuitable for applications requiring minimal invasive systems with mm-scale form factor [25]. On the other hand, in low-power low-area applications, SC converters represents a better alternative since they are amenable for full on-chip integration SC converters with a voltage gain higher than one are referred to in the literature as voltage multipliers or charge pumps (CPs) [6,[26][27][28]. The conventional topologies of a monolithic charge pumps are the linear known as Dickson and Cockcroft-Walton charge pumps, which are made up of MOSFET diodes and capacitors clocked by a two-phases clock generator.…”

A BIST Scheme for Bootstrapped Switches

“…For example, they are used in sample and hold circuits to achieve rail-to-rail switching functions [10,11], used in charge pump circuits to improve energy harvesting by node precharging [12,13], and so on. There are also reports on improving the performance of bootstrap switches [14][15][16]. For example, the body effect compensation technology is used to improve the linearity of the bootstrapped switch [14,15], the dual-channel sampling switch technology is used to improve the accuracy and linearity of the bootstrapped switch [16], and so on.…”

“…There are also reports on improving the performance of bootstrap switches [14][15][16]. For example, the body effect compensation technology is used to improve the linearity of the bootstrapped switch [14,15], the dual-channel sampling switch technology is used to improve the accuracy and linearity of the bootstrapped switch [16], and so on. However, there are few reports on the fault diagnosis schemes for bootstrapped switches.…”