Other Parts Discussed in Thread: MCF8315C
MCF8315C current measure value not equal to the configured value.
Hello, I used MCF8315C to control BLDC. I configure current by writting register, and measure it by oscilloscope。
But I find the measure value doesn't equal to the configured value, and they have a const rate. Why?
1) MOTOR_STARTUP1.ALIGN_OR_SLOW_CURRENT_ILIMIT
a. set value=250mA, measure value=164mA. 250/164=1.524.
b. set value=500mA, measure value=324mA. 500/324=1.543.
2) MOTOR_STARTUP2.OL_ILIMIT
a. set value=250mA, measure value=160mA. 250/160=1.5625.
b. set value=500mA, measure value=336mA. 500/336=1.602.