An integrated current sensing circuit with comparator function for a buck DC-DC converter in HV-CMOS

Mitrovic, Natasa; Enne, Reinhard; Zimmermann, Horst

doi:10.1109/icecs.2016.7841287

Cited by 2 publications

(1 citation statement)

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“…Linear regulation is widely used to control charge pump output in a closed loop. However, a linear regulator could be very inefficient and lead to a possible large drop in the output voltage [22][23][24][25]. In this design, we use the bang-bang control topology to regulate the charge pump's output.…”

Section: Bang-bang Closed-loop Output Regulatormentioning

confidence: 99%

A High-Efficiency Low-Power Chip-Based CMOS Liquid Crystal Driver for Tunable Electro-Optic Eyewear

Deng

2018

Electronics

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A high-efficiency low-power chip-based liquid crystal (LC) driver has been successfully designed and implemented for adaptive electro-optic eyewear including tunable vision correction devices (eyeglass, contact lens, intraocular lens, occluder, and prism), phoropter, iris, head-mounted display, and 3D imaging. The driver can generate a 1 kHz bipolar square wave with magnitude tunable from 0 V to 15 V to change the lens focus adaptively. The LC driver output magnitude is controlled by a reference DC voltage that is manually tunable between 0 and 3 V. A multi-mode 1×/2×/3×/4×/5× charge pump is developed for DC-DC conversion to expand the output range with a fast-sink function implemented to regulate the charge pump output. In addition, a new four-phase H-bridge driving scheme is employed to improve the DC/AC inverter efficiency. The LC driver has been successfully implemented and tested as an IC chip (8.6 mm × 8.6 mm) using AMS 0.18 μm High-Voltage CMOS technology.

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Section: Bang-bang Closed-loop Output Regulatormentioning

confidence: 99%