Dear all,
I am running a bldc motor Infineon TLE9879 chip. Now I want to measure the current flowing through the motor. so I use the current sense amplifier where the motor current is converted to a voltage by means of a shunt resistor RSH(0.005 ohms).
Question: I want to measure current from 0.1amp to 3Amps which gives the voltage drop at RSH (0.1*0.005=0.0005volts to 3*0.005=0.015volts).
Considering 5V reference voltage of ADC I will not be able to get a good number for the above...
Current sense amplifier liner calibration
I am running a bldc motor Infineon TLE9879 chip. Now I want to measure the current flowing through the motor. so I use the current sense amplifier where the motor current is converted to a voltage by means of a shunt resistor RSH(0.005 ohms).
Question: I want to measure current from 0.1amp to 3Amps which gives the voltage drop at RSH (0.1*0.005=0.0005volts to 3*0.005=0.015volts).
Considering 5V reference voltage of ADC I will not be able to get a good number for the above...
Current sense amplifier liner calibration