Hello there.
I plan to measure current from low side with resistance and I don't know if some of the components I have are ideal for this job. there is a 5mOhms shunt resistor , The datasheet of the shunt resistance is shared below. this is the tlv9062 opamp 's datasheet and that i will use to measure the low side current.
I have to talk about the system first. The system will measure the current of the low side igbt of an alternating current motor that will draw a maximum of 5 amps of current. There is a circuit diagram in the datasheet of Tlv9062 opamp (Figure 38) and in this scheme the voltage drop of 100mV is increased to 4.95V with the non-inverting amplifier. As you know, the shunt resistance in my system is 5mOhms (+ - 5%). this makes a 25mV voltage drop for 5 amps and this is valid at maximum condition. In fact, the motor cannot be expected to draw more than 5 amps in normal operating condition. I want to measure relatively low currents such as 1 ampere with this shunt resistor and I want to publish the measurement value with a user interface. Do you think a shunt resistor of 5mOhms with tlv9062 can measure a voltage such as 5mV? I am waiting for help because I cannot understand the part of this in datasheet. thank you.
I plan to measure current from low side with resistance and I don't know if some of the components I have are ideal for this job. there is a 5mOhms shunt resistor , The datasheet of the shunt resistance is shared below. this is the tlv9062 opamp 's datasheet and that i will use to measure the low side current.
I have to talk about the system first. The system will measure the current of the low side igbt of an alternating current motor that will draw a maximum of 5 amps of current. There is a circuit diagram in the datasheet of Tlv9062 opamp (Figure 38) and in this scheme the voltage drop of 100mV is increased to 4.95V with the non-inverting amplifier. As you know, the shunt resistance in my system is 5mOhms (+ - 5%). this makes a 25mV voltage drop for 5 amps and this is valid at maximum condition. In fact, the motor cannot be expected to draw more than 5 amps in normal operating condition. I want to measure relatively low currents such as 1 ampere with this shunt resistor and I want to publish the measurement value with a user interface. Do you think a shunt resistor of 5mOhms with tlv9062 can measure a voltage such as 5mV? I am waiting for help because I cannot understand the part of this in datasheet. thank you.
