ZHCSPN7B March 2023 – August 2024 TMAG6181-Q1
PRODUCTION DATA
The TMAG6181-Q1 supports several device and system level diagnostics features to detect, monitor, and report failures during the device operation.
In the event of a failure, the TMAG6181-Q1 is placed in a FAULT state, where the outputs from the AMR sensors are placed in a high-impedance state. See Device Functional Modes for fault state transition from different operation modes. As shown in the Application and Implementation section, users can add pullup or pulldown resistors on SIN_P, SIN_N, COS_P, and COS_N pins at the termination site (that is the microcontroller). The resistors are generally pulled up to supply voltage or pulled down to ground such that the ADC code on MCU is out of expected range. This state signal faults to the microcontroller.
The integrated turns counter has a valid range of 10% to 90% PWM output. If a fault is detected in the turns counter, then the output of the turns counter is at >95% PWM or <5% PWM. The external microcontroller can monitor if the turns counter is within expected range.
The TMAG6181-Q1 performs the following device and system level checks: