PTC Heater with High Current PROFET™ - Infineon Technologies

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Uploaded by on Jul 14, 2011

http://www.infineon.com/profet
Due to reliability & self-protection, PTC (positive temp. coefficient) ceramic heating elements are getting more & more popular in automotive and also in industrial /consumer applications. The driving challenges are the low cold-resistance, leading to extreme inrush currents, danger of short-circuits and it's non-linear characteristics. The "PTC-Heater Demo" incorporates two 6mΩ high-current ProFets (BTS50060), a LIN-transceiver and the TLE7826, an embedded power IC generating independent PWM signals for the two-channel PTC heater and brushed DC-motor fan. Apart from that, lots of protection and diagnostic features like i.e. short-circuit & overtemperature protection or open-load detection and offset current measurement. The demo is fully programmable via a USB/LIN interface.

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