Electronics Weekly
Dubbed TSC1801, it is aimed at motor control, solar power and automotive power conditioning.
“The amplifier’s fast response allows pulse-by-pulse current control even in very high-frequency power-management systems,” according to the company, as well as “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 internal gain-setting resistors, providing 20V/V gain and 0.15% accuracy over the entire temperature range, said ST: “The architecture permits total output error better than 0.5% and offset voltage of ±200μV max.” 5V/V and 50V/V models will follow.
The device can perform bidirectional measurements (with Vref value caveats).
The two inputs and the reference input must not stray more than 400mV below the negative supply rail or 300mV above the positive supply rail, although the two inputs can go slightly beyond this if current stays under 10mA.
Operation is over 2 to 5.5V total 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,” said ST. These are scheduled for the second quarter of this year.
Find the TSC1801 on this web page
