Probing Techniques for GaN Power Electronics: How to Obtain 400+ MHz Voltage and Current Measurement Bandwidths without Compromising PCB Layout

Harry C P Dymond; Yushi Wang; Saeed Jahdi; Bernard H Stark

doi:10.30420/565822010

Probing Techniques for GaN Power Electronics: How to Obtain 400+ MHz Voltage and Current Measurement Bandwidths without Compromising PCB Layout

Harry C P Dymond^*, Yushi Wang, Saeed Jahdi, Bernard H Stark

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

5 Citations (Scopus)

441 Downloads (Pure)

Abstract

Printed circuit board (PCB) layout critically influences the performance of GaN power electronic circuits, in terms of switching speed, overshoots, ringing, and generated EMI. Typically, low-impedance layout of gate-drive loops and switching cells is vital for performance. This paper briefly examines the circuit impedances required for adequate performance, and the bandwidth needed for measurement of switching waveforms. It is shown that many high-bandwidth voltage and current probing methods are not compatible with the circuit-layout requirements. The paper then presents PCB layout and probing techniques, including an updated version of the “Infinity” current sensor, that achieve both high-fidelity, wide-bandwidth (400+ MHz) voltage and current measurements, and clean, efficient switching.

Original language	English
Title of host publication	PCIM Europe 2022
Subtitle of host publication	International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
Place of Publication	Nuremberg
Pages	44-53
Number of pages	10
DOIs	https://doi.org/10.30420/565822010
Publication status	Published - 19 Aug 2022

Publication series

Name	PCIM Europe Conference Proceedings
ISSN (Electronic)	2191-3358

Bibliographical note

Funding Information:
Tests on four versions of a GaN-based power board switching 400 V and 20 A have demonstrated the very low insertion impedance and wide bandwidth of an updated version of the Infinity Sensor. The sensor therefore has minimal effect on circuit performance. As such, it is a promising candidate for measurements of prototypes, and for deployment in end products. Samples of the Infinity Sensor V2 are available via infinitysensor.com. This work was supported by the UK EPSRC under Grant EP/R029504/1.

Publisher Copyright:
© VDE VERLAG GMBH, Berlin, Offenbach.

Keywords

Wide bandgap devices
current sensing
probing
PCB layout
infinity sensor

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Shortlisted Finalist for Best Paper
Jahdi, S. (Recipient), 2022
Prize: Other distinction

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Dymond, H. C. P., Wang, Y., Jahdi, S., & Stark, B. H. (2022). Probing Techniques for GaN Power Electronics: How to Obtain 400+ MHz Voltage and Current Measurement Bandwidths without Compromising PCB Layout. In PCIM Europe 2022: International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (pp. 44-53). (PCIM Europe Conference Proceedings).. https://doi.org/10.30420/565822010

Dymond, Harry C P ; Wang, Yushi ; Jahdi, Saeed et al. / Probing Techniques for GaN Power Electronics : How to Obtain 400+ MHz Voltage and Current Measurement Bandwidths without Compromising PCB Layout. PCIM Europe 2022: International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. Nuremberg, 2022. pp. 44-53 (PCIM Europe Conference Proceedings).

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abstract = "Printed circuit board (PCB) layout critically influences the performance of GaN power electronic circuits, in terms of switching speed, overshoots, ringing, and generated EMI. Typically, low-impedance layout of gate-drive loops and switching cells is vital for performance. This paper briefly examines the circuit impedances required for adequate performance, and the bandwidth needed for measurement of switching waveforms. It is shown that many high-bandwidth voltage and current probing methods are not compatible with the circuit-layout requirements. The paper then presents PCB layout and probing techniques, including an updated version of the “Infinity” current sensor, that achieve both high-fidelity, wide-bandwidth (400+ MHz) voltage and current measurements, and clean, efficient switching.",

keywords = "Wide bandgap devices, current sensing, probing, PCB layout, infinity sensor",

author = "Dymond, {Harry C P} and Yushi Wang and Saeed Jahdi and Stark, {Bernard H}",

note = "Funding Information: Tests on four versions of a GaN-based power board switching 400 V and 20 A have demonstrated the very low insertion impedance and wide bandwidth of an updated version of the Infinity Sensor. The sensor therefore has minimal effect on circuit performance. As such, it is a promising candidate for measurements of prototypes, and for deployment in end products. Samples of the Infinity Sensor V2 are available via infinitysensor.com. This work was supported by the UK EPSRC under Grant EP/R029504/1. Publisher Copyright: {\textcopyright} VDE VERLAG GMBH, Berlin, Offenbach.",

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Dymond, HCP , Wang, Y , Jahdi, S & Stark, BH 2022, Probing Techniques for GaN Power Electronics: How to Obtain 400+ MHz Voltage and Current Measurement Bandwidths without Compromising PCB Layout. in PCIM Europe 2022: International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. PCIM Europe Conference Proceedings, Nuremberg, pp. 44-53. https://doi.org/10.30420/565822010

Probing Techniques for GaN Power Electronics: How to Obtain 400+ MHz Voltage and Current Measurement Bandwidths without Compromising PCB Layout. / Dymond, Harry C P ; Wang, Yushi ; Jahdi, Saeed et al.
PCIM Europe 2022: International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. Nuremberg, 2022. p. 44-53 (PCIM Europe Conference Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

TY - GEN

T1 - Probing Techniques for GaN Power Electronics

T2 - How to Obtain 400+ MHz Voltage and Current Measurement Bandwidths without Compromising PCB Layout

AU - Dymond, Harry C P

AU - Wang, Yushi

AU - Jahdi, Saeed

AU - Stark, Bernard H

N1 - Funding Information: Tests on four versions of a GaN-based power board switching 400 V and 20 A have demonstrated the very low insertion impedance and wide bandwidth of an updated version of the Infinity Sensor. The sensor therefore has minimal effect on circuit performance. As such, it is a promising candidate for measurements of prototypes, and for deployment in end products. Samples of the Infinity Sensor V2 are available via infinitysensor.com. This work was supported by the UK EPSRC under Grant EP/R029504/1. Publisher Copyright: © VDE VERLAG GMBH, Berlin, Offenbach.

PY - 2022/8/19

Y1 - 2022/8/19

N2 - Printed circuit board (PCB) layout critically influences the performance of GaN power electronic circuits, in terms of switching speed, overshoots, ringing, and generated EMI. Typically, low-impedance layout of gate-drive loops and switching cells is vital for performance. This paper briefly examines the circuit impedances required for adequate performance, and the bandwidth needed for measurement of switching waveforms. It is shown that many high-bandwidth voltage and current probing methods are not compatible with the circuit-layout requirements. The paper then presents PCB layout and probing techniques, including an updated version of the “Infinity” current sensor, that achieve both high-fidelity, wide-bandwidth (400+ MHz) voltage and current measurements, and clean, efficient switching.

AB - Printed circuit board (PCB) layout critically influences the performance of GaN power electronic circuits, in terms of switching speed, overshoots, ringing, and generated EMI. Typically, low-impedance layout of gate-drive loops and switching cells is vital for performance. This paper briefly examines the circuit impedances required for adequate performance, and the bandwidth needed for measurement of switching waveforms. It is shown that many high-bandwidth voltage and current probing methods are not compatible with the circuit-layout requirements. The paper then presents PCB layout and probing techniques, including an updated version of the “Infinity” current sensor, that achieve both high-fidelity, wide-bandwidth (400+ MHz) voltage and current measurements, and clean, efficient switching.

KW - Wide bandgap devices

KW - current sensing

KW - probing

KW - PCB layout

KW - infinity sensor

U2 - 10.30420/565822010

DO - 10.30420/565822010

M3 - Conference Contribution (Conference Proceeding)

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T3 - PCIM Europe Conference Proceedings

SP - 44

EP - 53

BT - PCIM Europe 2022

CY - Nuremberg

ER -

Dymond HCP , Wang Y , Jahdi S , Stark BH. Probing Techniques for GaN Power Electronics: How to Obtain 400+ MHz Voltage and Current Measurement Bandwidths without Compromising PCB Layout. In PCIM Europe 2022: International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management. Nuremberg. 2022. p. 44-53. (PCIM Europe Conference Proceedings). doi: 10.30420/565822010

Probing Techniques for GaN Power Electronics: How to Obtain 400+ MHz Voltage and Current Measurement Bandwidths without Compromising PCB Layout

Abstract

Publication series

Bibliographical note

Keywords

Access to Document

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Prizes

Shortlisted Finalist for Best Paper

Cite this