Power Application Controller
®
-111-
Copyright 2020 © Qorvo, Inc.
Rev 1.2
– Jan 17, 2019
10.6 Enabling the ASPD
To enable the ASPD, set
SOC.ENDRV.ENDRV
to 1b.
10.7 Gate Driver Safe State
After the device is powered, both the low-side gate drivers are pulled-down and the high-side
gate drivers are pulled-down using weak pull-downs. The low-side gate drivers are pulled-down
to ground and the high-side gate drivers are pulled-down to the source node to put them into a
safe state while the driver manager is disabled.
Once the driver manager is enabled, the gate drivers will be driven high or low according to the
PWM inputs configured by the MCU.
10.8 Driver Protection
During operation the ASPD may disable the gate drivers when events such as over-current
occur.
The ASPD has a protection input signal (PR) that notifies the ASPD of a protection event. If the
ASPD has unmasked the high-side PR protection (
SOC.CFGDRV1.nHSPRM
= 1b) then the
high-side gate drivers will be disabled. If the ASPD has unmasked the low-side PR protection
(
SOC.CFGDRV1.nLSPRM
= 1b), then the low-side gate drivers will be disabled.
Once the gate drivers have been disabled, the MCU must reset the ASPD by setting
SOC.ENDRV.ENDRV
to 0b, then back to 1b in order to re-enable the ASPD.
