DC Bus and ADC Offset Compensation for IRMCF/K300 Series Motor Control IC - International Rectifier - #1
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Text version of the page
| International IOR Rectifier | ||||||||||||||||||
| APPLICATION NOTE | ||||||||||||||||||
| Application Note AN-1127 | ||||||||||||||||||
| DC Bus and ADC Offset Compensation for IRMCF/K300 Series Motor Control IC By Benjamin Poiesz, International Rectifier November 2006 Version 1.0 Table of Contents | ||||||||||||||||||
| INTRODUCTION..................................................................................................2 POTENTIAL HAZARDS......................................................................................2 ADC OFFSET COMPENSATION........................................................................2 EXTERNAL REFERENCE FOR IFBK OP-AMPS...............................................3 EXTERNAL REFERENCE FOR AINX.................................................................3 PERFORMING COMPENSATION CALCULATIONS..........................................4 EXTERNAL VOLTAGE PROTECTION...............................................................5 | ||||||||||||||||||
| This application note describes how to properly and safely use the IRMCF/K300 series to measure and regulate the DC Bus voltage. Two compensation methods are outlined to improve measurement accuracy involving the Analog-to-Digital converter. By following these methods the ADC will allow DC Bus measurements to be accurate within a few volts, rather than tens of volts. These same techniques can also be applied to non-DC Bus voltage measurements for more accurate results across all of the ADC inputs. | ||||||||||||||||||
| AN-1127 | ||||||||||||||||||
| www.irf.com | ||||||||||||||||||
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