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Melexis Two Coil Fan Driver - Power Dissipation 

This application note provides a method to determine the power dissipation in Melexis Two Coil fan driver ICs.

Rather than giving complex formulas requiring long calculations which increase the risk of errors this application note provides practical and usable solutions to perform accurate estimations. General theory and steps of simplification are explained, so that the reader keeps the understanding of the contents and formulas.

The method described here is completed with two concrete examples based on Two-Coil fan driver:
US91A – High Voltage Fan Driver
US65 – Low Noise High Current Fan Driver


Current Revision:  001
File Type: Application Note
File Size: 256.7 KB

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Part Number
Description
 
US62 Two-Coil Fan Driver (Tachometer output)
US63 Two-Coil Fan Driver (Alarm output)
US65 Two-Coil Fan Driver - Low Noise & High Output Current (Tachometer output)
US651 Two-Coil Fan Driver - Low Noise (Tachometer output)
US66 Two-Coil Fan Driver - Low Noise & High Output Current (Alarm output)
US661 Two-Coil Fan Driver - Low Noise (Alarm output)
US79 Smart Fan Motor Driver
US890 Two-Coil Fan Driver - High Output Current (Tachometer output)
US891 Two-Coil Fan Driver - High Output Current (Alarm output)
US90A Two-Coil Fan Driver - High Voltage (Tachometer output)
US91A Two-Coil Fan Driver - High Voltage (Alarm output)
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