DRV3202-Q1_15 Datasheet, PDF (18/39 Pages) Texas Instruments – 3-Phase Brushless Motor Driver

DRV3202-Q1
SLVSBJ4A – OCTOBER 2012 – REVISED DECEMBER 2012
PRE-DRIVER
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Description
The pre-driver block provides three high-side pre-drivers and three low-side pre-drivers to drive external N-
channel MOSFETs. The turn on side of the high-side pre-drivers supply the large N-channel transistor current to
quickly charge and PMOS support output voltage up to PDCPV. The turn off side supplies the large N-channel
transistor current to quickly discharge, while the low-side pre-drivers supply the large N-channel transistor current
for charge and discharge. The output voltage of the low-side pre-driver is controlled by VB and it has VGS
protection to make less than 18 V. The pre-driver has a stop condition in some fault conditions ($16 Error
Detection).
High-Side Pre-Driver
PDCPV
CTLxH
H: PU on
L: PD on
PD CTRL
UH/
VH/
WH ^RL
CL
Low-Side Pre-Driver
CTLxL
H: PU on
L: PD on
CTLEN
PD CTRL
GFB
VGS
Protection
GND
VB
UL
VL
WL _RL
C_L
GFB
Figure 14. Pre-driver Block Diagram
18
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