2.1MHz low-side current sense amplifier Leave a comment

Dubbed TSC1801, it’s aimed toward motor management, solar energy and automotive energy conditioning.

“The amplifier’s fast response allows pulse-by-pulse current control even in very high-frequency power-management systems,” in keeping with the corporate, in addition to “rapid over-current detection, protecting sensitive output-stage components against being damaged in the event of a fault”.

It is a single-op-amp differential amplifier with inside gain-setting resistors, offering 20V/V achieve and 0.15% accuracy over your complete temperature vary, stated ST: “The architecture permits total output error better than 0.5% and offset voltage of ±200μV max.” 5V/V and 50V/V fashions will comply with.

The gadget can carry out bidirectional measurements (with Vref worth caveats).

The two inputs and the reference enter should not stray greater than 400mV under the detrimental provide rail or 300mV above the constructive provide rail, though the 2 inputs can go barely past this if current stays underneath 10mA.

Operation is over 2 to five.5V complete and -40 to +125°C.

“Automotive versions are available, qualified and characterized according to AEC-Q100 and Q003 or equivalent, with advanced screening according to AEC Q001 and Q002 or equivalent,” stated ST. These are scheduled for the second quarter of this 12 months.

Find the TSC1801 on this net web page