DRV8301_12 Datasheet, PDF (5/26 Pages) Texas Instruments – Three Phase Pre-Driver with Dual Current Shunt Amplifiers and Buck Regulator

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FUNCTION BLOCK DIAGRAM
OCTW
FAULT
EN _GATE
DTC
SCLK
SDI
SDO
SCS
VDD _SPI
Phase A
( repeated for B& C)
INH _ A
INL _A
Gate Driver
Control
&
Fault
Handling
(PVDD_UV,
CP_UV,
OTW, OTSD,
OC_ LIMIT)
OSC
Timing
and
Control
Logic
Charge
Pump
Regulator
Trickle
Charge
High Side
Gate Drive
Low Side
Gate Drive
PVDD2
VSENSE
BST _ BK
PH
EN _BUCK
PWRGD
SS _ TR
RT _ CLK
COMP
Current
Sense
Amplifier1
Buck
Converter
Offset
½ Vref
Offset
½ Vref
Current
Sense
Amplifier2
DRV8301
SLOS719 – AUGUST 2011
PVDD1
CP2
CP1
GVDD
PVDD1
BST _A
GH _A
SH_A
GL _A
SL _A
Motor
SN1
SP1
REF
DC _ CAL
SN2
SP2
AVDD
DVDD
Rshunt1
PGND
Power
Pad
GND
SO1 SO2
AGND
AGND GND PGND
Copyright © 2011, Texas Instruments Incorporated
Product Folder Link(s): DRV8301
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