3-Phase BLDC Motor Sensorless Control Using MC56F8013

Tuning7.4 Power Stage Related ParametersParameters for the desired power stage can be loaded by calling one of the following functions.• EVM33395BoardSettings()• MPBoardSettings()Unused functions will be dead-stripped by the compiler, so they will not occupy program Flash.To select the desired power stage board, use #define directives in the bldczcconfig.h header file.7.4.1 Parameter SummaryThe parameters in Group 2 are listed and explained in Table 7-2.Table 7-2. Power Stage Related Parameter SummaryName Description Units Range DefaultFreeMasterLocationAPP_VOLT_MAXDC-bus voltage value, then maximumoutput is received from ADC.VDefined byboardcomponents.No range.16.3 N/AAPP_CUR_MAXDC-bus current value, then maximumoutput is received from ADC.ADefined byboardcomponents.No range.8.25 N/ADC_UNDERVOLTAGE DC under-voltage level of application. V 0.0–8.0 5.0 N/ADC_OVERVOLTAGE DC over-voltage level of application. V 13.0–16.2 15.0 N/ADC_OVERCURRENT DC over-current level of application. A 0.0–8.25 3.0 N/A7.4.2 APP_VOLT_MAXThe DC-bus voltage value, when the maximum output is received from the ADC. This value correspondsto the maximum value of the ADC DC-bus voltage reading range.For example, if the ADC high reference is set to 3.3 V, the ADC converter output will be at a maximumwhen 3.3 V is received from its input. If the external analog sampling circuit provides 3.3 V to the ADC,when the DC-bus voltage is 16.0 V this parameter should be 16.0.This parameter should be defined with the decimal point to enable the pre-compiler to perform floatingpoint operations.7.4.3 APP_CUR_MAXThe DC-bus current value, when the maximum output is received from the ADC. This value correspondsto the maximum value of the ADC DC-bus current reading range.For example, if the ADC high reference is set to 3.3 V, the ADC output will be at a maximum when 3.3 Vis received from its input. If the external analog sampling circuit provides 3.3 V to the ADC, when theDC-bus current is 4.0 A this parameter should be 4.0.3-Phase BLDC Motor Sensorless Control using MC56F8013, Rev. 076 Freescale Semiconductor