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Start Over Author "Neville McNeill" Journal electronics letters
4 results on '"Neville McNeill"'

1. Gate driver power supply arrangement for cascode‐connected super‐junction MOSFETs in a bridge‐leg

Author

Neville McNeill, Andrew Hopkins, and Barry W. Williams

Subjects
Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract

Abstract This letter presents a circuit for powering cascode gate driver circuits with super‐junction (SJ) MOSFETs in a bridge‐leg. The cascode gate driver gives inherent MOSFET intrinsic diode deactivation, and the bridge‐leg incorporates an inductive turn‐on snubber which controls the charging currents into the MOSFETs’ output capacitances. The cascode driver circuits and snubber inductor are configured such that the gate‐drive energy is derived from the power stage.

Published
2022
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2. Switched‐capacitor power sensing in low‐power energy harvesting systems

Author

Bernard H. Stark, Plamen Proynov, G. D. Szarka, and Neville McNeill

Subjects
Reservoir capacitor, Computer science, Ćuk converter, Sense (electronics), Switched capacitor, Decoupling capacitor, law.invention, Capacitor, Hardware_GENERAL, law, Boost converter, Electronic engineering, Electrical and Electronic Engineering, Energy harvesting
Abstract

A method for power sensing in low-power energy harvesting systems is presented. The technique utilises a small sense capacitor between the converter output and the main storage capacitor. The storage capacitor is disconnected from the converter for a short period of time and the change of sense capacitor voltage is measured. This change is proportional to the average output current of the converter for the period of the measurement, thus the relative output power can be determined using only voltage measurements. The method has been experimentally validated in a low-power energy harvesting system that employs a microcontroller-based control implementation.

Published
2013

3. Current pulse transformer circuit with reset voltage feedback implemented using discrete MOSFET

Author

Derrick Holliday, Neville McNeill, Naren Gupta, Philip H. Mellor, and Stephen G. Burrow

Subjects
Engineering, business.industry, Amplifier, Electrical engineering, Hardware_PERFORMANCEANDRELIABILITY, Power-on reset, Current transformer, law.invention, Hardware_GENERAL, law, Power electronics, Hardware_INTEGRATEDCIRCUITS, Electronic engineering, Voltage droop, Electrical and Electronic Engineering, business, Transformer, Low voltage, Hardware_LOGICDESIGN, Voltage
Abstract

A discrete MOSFET driven from a low-cost signal amplifier may be used to realise reset voltage feedback in a current transformer circuit. Furthermore, losses are relocated from the amplifier to the MOSFET. The technique has been demonstrated in this paper and is shown to effectively eliminate droop error.

Published
2009

4. Alleviating common-mode interference effects in phase-switched power device gate driver circuit

Author

Neville McNeill, Derrick Holliday, and Philip H. Mellor

Subjects
Materials science, business.industry, Electrical engineering, Hardware_PERFORMANCEANDRELIABILITY, Common-mode interference, Network topology, Capacitance, law.invention, law, Power electronics, Electronic engineering, Gate driver, Commutation, Electrical and Electronic Engineering, business, Transformer, Electronic circuit
Abstract

The number of transformers in isolated power device gate driver circuits may be reduced in bridge-leg topologies by using a phase-switched carrier technique. However, susceptibility to the effects of transient currents injected through inter-winding capacitances is increased. This is addressed in this reported work.

Published
2008

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