Power Application Controller
®
-110-
Copyright 2020 © Qorvo, Inc.
Rev 1.0
– Jan 17, 2020
10.3 Functional Description
The Application Specific Power Drivers
TM
(
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) module
handles power driving for power and motor control applications. The ASPD contains three
programmable-current low-side gate drivers (DRLx), three programmable-current high-side gate
drivers (DRHx). Each gate driver can drive an external MOSFET switch in response to high-
speed control signals from the micro-controller ports, and a pair of high-side and low-side gate
drivers can form a half-bridge driver.
Figure 10-2
High-Side Gate Driver Block Diagram
DRSx
PRE-
DRIVER
DRHx
BBM
ENDRV
V
CP
SOC.DRV_FLT.DRV_FLT
Driver
Fault Detection
SOC.ENBBM.ENBBM
SOC.DRVILIMHS.HSSINK
SOC.CFGDRV1.HS_TON_SET
SOC.ENDRV.ENDRV
SOC.CFGDRV1.HSPREN
PB[5:3]
SOC.DRVILIMHS.HSSOURCE
CBCCTL
SOC.CFGDRV3.nHPxyCBCM
SOC.MODULE_EN.nDRVFLT_MSK
SOC.CFGDRV2.nDRVxyDISM
SOC.CFGDRV2.LPCBCHS
SOC.CFGDRV3.nLPxyCBCM
SOC.STATDRV.DRVxyDISSTAT
SOC.STATDRV.DRVxyDIS
Smart
St ate
Machine
Level
Shifter
10.4 High-Side Gate Drivers
The ASPD contains 3 push-pull high-side gate drivers, with programmable sink and source
current.
The DRH<2:0> outputs of the ASPD are used to drive the gate of an external high-side power
MOSFET. The supply for the high-side gate drivers is V
CP
, which is the sum of V
M
+ V
P
. The
charge pump regulates VCP based on the motor voltage (V
P
) and the configured output of the
MVBB (V
P
).
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:
•
DRH0: PB4 (PWMA4)
•
DRH1: PB5 (PWMA5)
•
DRH2: PB6 (PWMA6)