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STMicroelectronics TSC1641

60 V, 16-bit high-precision power monitor with I²C and MIPI I3C interface

The TSC1641 is a high-precision current, voltage, power, and temperature monitoring analog front-end (AFE). It monitors current into a shunt resistor and load voltage up to 60 V in a synchronized way. The current measurement can be high-side, low-side, and bidirectional. The device integrates high-precision 16-bit dual-channel ADC with a programmable conversion time from 128 µs to 32.7 ms. Digital bus interface is flexible from I²C/SMbus 1 MHz data rate to MIPI I3C 12.5 MHz data rate. This allows connectivity to most of the recent STM32 products. The TSC1641 allows the assertion of several alerts regarding the voltage, current, power and temperature. Thresholds can be set for each parameter in a specific register. The TSC1641 comes in a plastic DFN10 package and can operate from -40 °C to 125 °C ambient temperature.

Key features

16bit resolution dual-channel sigma-delta ADC
2.7V to 3.6V power supply voltage range, from 128µs to 32.7ms total conversion time
Bidirectional current, high-side, or low-side sensing
Load voltage sensing from 0V to 60V, ultra-low input bias current is 20pA typical at VCM = 12V
Ultra-low shutdown current is 50nA typical, shunt offset voltage is ±3µV typical
Shunt and load voltage gain error is 0.5% maximum
Internal die temperature monitoring, MIPI I3C up to 12.5MHz
I²C bus interface up to 1MHz, default I²C address: 1000000(b) to 1000011(b)
Alert signal generated in case of over/undervoltage, over/undercurrent, overpower or overtemperature
DFN10 package, extended temperature range from -40°C to 125°C

Applications

Industrial battery packs
Power inverters
DC power supplies
Data centers
Telecom equipment
Power tools

Available tools

STEVAL-DIGAFEV1:

Evaluation board for the TSC1641, 16-bit, high precision current and power monitor with MIPI I3C/I2C interface

The STEVAL-DIGAFEV1 evaluation board allows the user to evaluate the performance of the TSC1641 16-bit, high precision current and power monitor with MIPI I3C/I2C interface. The board can measure voltage up to 60 V, a load current up to 10A delivered power, and temperature based on the dual channel power monitor.

Data brief