ACT72350 datasheet(27/97 Pages) QORVO

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ACT72350 Data Sheet

160V 3 Phase BLDC Motor Driver

Data Sheet v1.1, 2025-02-17

Subject to change without notice

27 of 97

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microcontroller upon re-initialization to determine the cause of previous reset. This information is stored

within the SOC.FAULT.TMPFLT bit

A power monitoring signal VMON is provided onto the AIO6 buffered output for monitoring various internal

power supplies. VMON can be set to be one of the following monitored supplies:

0.4•VCC33, 0.4•VCCIO,

0.4•VSYS, VPTAT1 or 0.1•VP.

For power and temperature warning, an IC temperature warning event at 140°C are provided as a

maskable interrupt source into the application microcontroller, through the nFAULT output. This warning

could be employed to instruct the microcontroller to safely power down the system.

To allow Temperature Warning assertions on the nFAULT open drain output, write to the

SOC.FAULTENABLE.nTMPWARN bit. Alternatively, the external microcontroller can obtain the real time

status temperature warning bit by reading the SOC.FAULT.TMPWARN bit. If the Temperature Warning

fault issues a fault message, the state of this fault is latched within the SOC.FAULT.TMPWARN_LATCH.

In addition to the temperature warning interrupt and fault reset, a temperature monitor signal is provided

onto the AIO6 buffered output as an analog signal, which the application microcontroller can choose to

capture using its ADC resource, as a means to measure internal die temperature.

11.10 Voltage Reference

The reference block includes a 1.2V high-precision reference voltage used internally and for all the LDOs.

There is also a high-accuracy 2.5V/3.0V programmable reference for the ADC VREF. There is also a 4-

level programmable threshold voltage VTHREF (0.1V, 0.2V, 0.5V, and 1.25V) .

1 VPTAT is voltage proportional with absolute temperature from the temperature sensing circuit. The

VPTAT voltage can be sampled by the

external microcontroller’s ADC through the voltage monitoring

MUX at AO6, while AIO6 is in Output Buffer Mode

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