I am building a circuit that needs to react at 15ADC. The current may peak to 30A for 80mS and may repeat every second. I prefer to use the 20A current sensor (MCS1823GQTE-520BRN) because of its higher mV/A output. If I use the 20A sensor, and above 20A the output goes to the rail, it will not have any effect on the circuity that follows it. I am only concerned about the sensor’s expected life. Can I use the 20A current sensor (MCS1823GQTE-520BRN) or do I need to use the 30A current sensor (MCS1823GQTE-530BRN) since both have a 0.6mΩ primary conductor?
Hello @ian1,
Welcome to MPS Forums. Typically the part is not stressed by transient currents as the current path does not directly go through the silicon. However, the accuracy will be affected as it is directly proportional to the amount of the current sensed. If accuracy is not a major concern when sensing above 20 A, it would be better to use the 20 A current sensor ((MCS1823GQTE-520BRN) as this will allow better current measurement accuracy.
Thank you for a clear answer.
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