Power Application Controller
®
-111-
Copyright 2020 © Qorvo, Inc.
Rev 1.0
– Jan 17, 2020
10.5 Low-Side Gate Drivers
The ASPD contains 3 push-pull low-side gate drivers, with programmable sink and source
current.
Figure 10-3
Low-Side Gate Driver Block Diagram
PRE-
DRIVER
DRLx
BBM
ENDRV
V
P
SOC.DRV_FLT.DRV_FLT
Driver
Fault Detection
SOC.ENBBM.ENBBM
SOC.DRVILIMLS.LSSINK
SOC.CFGDRV1.LS_TON_SET
SOC.ENDRV.ENDRV
SOC.CFGDRV1.LSPREN
PB[2:0]
SOC.DRVILIMLS.LSSOURCE
CBCCTL
SOC.CFGDRV3.nHPxyCBCM
SOC.MODULE_EN.nDRVFLT_MSK
SOC.CFGDRV2.nDRVxyDISM
SOC.CFGDRV2.LPCBCLS
SOC.CFGDRV3.nLPxyCBCM
SOC.STATDRV.DRVxyDISSTAT
SOC.STATDRV.DRVxyDIS
Smart
St ate
Machine
The DRL<2:0> outputs of the ASPD are used to drive the gate of an external low-side power
MOSFET. The supply for the low-side gate drivers is VP, which is the output of the MVBB. VP
may be configured to 10V or 12V.
The input to the gate drivers are from PWM timer output signals from the MCU. The MCU can
configure these gate driver inputs from the PWM timer peripheral and can configure the dead-
time between complementary high-side/low-side pairs.
The input to the 3 high-side gate drivers are shown below:
•
DRL0: PB0 (PWMA4)
•
DRL1: PB1 (PWMA5)
•
DRL2: PB2 (PWMA6)