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Integrated Analog and Digital Power Supply for Remote Sensors

Authored on: Apr 11, 2014 by Magnus Meier

Technical Paper

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Decentralized industrial sensors such encoders, optical sensors or laser modules are supplied via long lines with a 24 V voltage. This voltage can vary up to +/-50% and be overlain by glitches and noise. In the field of sensors, however, high-precision analog circuits have to be supplied with a voltage as precise and glitch-free as possible. In modern sensors high-precision analog circuits have to work together with microcontrollers on different supply voltages or drivers with a switching capability of several 100 mA, such as IO-Link interface drivers or RS422 line drivers. A special DC/DC converter hybrid architecture provides an optimum solution to the different supply needs of analog and digital part of sensors.
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