STMicroelectronics — TSC1641 Power Monitor IC

STMicroelectronics has introduced the TSC1641, a digital current, voltage, power and temperature monitor which features high-precision input channels and a MIPI I3C bus interface. 

The IC monitors dc current and voltage simultaneously through a dual-channel, 16-bit ADC, and produces power computations derived from these measurements internally. Because the current and voltage measurements are precisely synchronized, the power calculations produced by the TSC1641 are highly accurate. Measuring voltages up to a maximum of 60 V, the TSC1641 can be used in a wide variety of industrial settings. 

The IC monitors current with an external shunt resistor, which gives the designer flexibility to perform high-side, low-side, or bi-directional measurements. The TSC1641 also performs internal die temperature monitoring. 

Via interface options including I2C and SMBus as well as I3C, the digital monitor reports its measurements to a host controller. A dedicated Alert pin enables the TSC1641 to provide alerts for trigger events: over- and under-voltage, over- and under-current, over-power, and over-temperature. 

The I3C interface allows designers to connect the TSC1641 directly to state-of-the-art microcontrollers such as the STM32H5 series from ST, to assist system supervision. The interface supports data rates up to 12.5 MHz and requires no pull-up resistors, helping to reduce the bill-of-materials and save board space. 

A full set of hardware and software tools is available from ST to enable designers to explore the TSC1641 precision power monitoring capabilities.