An Amplifier-Less Acquisition Chain for Power Measurements in Series Resonant Inverters

Successive approximation register (SAR) analog-to-digital converter (ADC) manufacturers recommend the use of a driver amplifier to achieve the best performance. When a driver amplifier is not used, the conversion speed is severely penalized because of the need to meet the settling time constraint. T...

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Bibliographic Details
Published inSensors (Basel, Switzerland) Vol. 19; no. 19; p. 4343
Main Authors Villa, Jorge, Artigas, José I., Barragán, Luis A., Navarro, Denis
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 08.10.2019
MDPI
Subjects
Amplifiers
Analog to digital conversion
Analog to digital converters
analog-digital conversion
Approximation
Chains
data acquisition chain
error compensation
Field programmable gate arrays
home appliances
Induction heating
Inverters
Methods
Power measurement
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Summary:Successive approximation register (SAR) analog-to-digital converter (ADC) manufacturers recommend the use of a driver amplifier to achieve the best performance. When a driver amplifier is not used, the conversion speed is severely penalized because of the need to meet the settling time constraint. This paper proposes a simple digital correction method to raise the performance (conversion speed and/or accuracy) when the acquisition chain lacks a driver amplifier. It is intended to reduce the cost, size and power consumption of the conditioning circuit while maintaining acceptable performance. The method is applied to the measurement of the output power delivered by a series resonant inverter for domestic induction heating.
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ISSN:1424-8220
1424-8220
DOI:10.3390/s19194343