Power Application Controller
®
-115-
Copyright 2020 © Qorvo, Inc.
Rev 1.2
– Jan 17, 2019
10.13 Gate Driver Programmable Current
The PAC5527 high-side and low-side gate drivers support programmable current output. This
allows the gate driver to internally control the slew rate to the MOSFET gate, which eliminates
the need for external series components to control the slew rate.
For both the high-side and low-side gate drivers, the user may configure the source and sink
current of the gate drivers, which will be used during the miller plateau of V
GS
to control the slew
rate. The user may configure the duration of the controlled current and the current output of the
gate drivers during this time.
The user may configure the controlled current between 250mA and 1A in 8 steps for both the
high-side and low-side gate drivers, for sink and source current independently.
Below are the waveforms for the high-side and low-side gate drivers that are generated with the
programmable current configuration.
Figure 10-5
High-side Gate Driver Waveforms
V
Time
V
GS
CFGDRV1.HS_TON_SET
I
DS
V
DS
PWM
I
DRV
CFGDRV1.HS_TON_SET
I
DRV
=DRVILIMHS.HSSOURCE
I
DRV
=Weak
I
DRV
=Max
I
DRV
=DRVILIMHS.HSSINK