SLUAAG7 October 2021 BQ25720
PROCHOT is an active low open-drain output to support Intel IMVP protocols. It continues to monitor input current, battery discharge current, and system voltage. If any event in the PROCHOT profile is triggered, a pulse is asserted to the CPU so that the CPU adjusts its performance to the power available to the system.
The events monitored by the processor hot function are listed in Table 2-1. For more PROCHOT event details, see the BQ25720 SMBus 1- to 4-Cell Narrow VDC Buck-Boost Battery Charge Controller With System Power Monitor and Processor Hot Monitor Data Sheet.
| Function | Description |
|---|---|
| ICRIT | 110% of Ilim2, adapter peak current. The deglitch time could change from 15 μs to 800 μs. |
| INOM | Adapter average current, as 110% of IIN_DPM |
| IDCHG1 | Battery discharge current level 1 |
| IDCHG2 | Battery discharge current level 2, IDCHG2 > IDCHG1 |
| VBUS_VAP | VBUS threshold to trigger PROCHOT in VAP mode 2 and 3 |
| VSYS | System voltage. The deglitch time is 4 μs. |
| Battery Removal | To detect battery be removed |
| CMPOUT | Independent comparator output (CMPOUT pin HIGH to LOW) |
| VINDPM | VBUS lower than 83%/91%/100% of VINDPM setting. For more details, see the device-specific data sheet. |
| EXIT_VAP | Charger exits VAP mode. |