DRV8303EVM Datasheet, PDF (5/29 Pages) Texas Instruments – THREE PHASE PRE-DRIVER WITH DUAL CURRENT SHUNT AMPLIFIERS

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FUNCTION BLOCK DIAGRAM
OCTW
FAULT
EN_GATE
DTC
SCLK
SDI
SDO
SCS
VDD_SPI
Gate Driver
Control
&
Fault
Handling
(PVDD_UV,
CP_UV,
OTW, OTSD,
OC_LIMIT)
OSC
Phase A
(repeated for B & C)
INH_A
INL_A
Timing
and
Control
Logic
DRV8303
SLOS846A – SEPTEMBER 2013 – REVISED OCTOBER 2013
Charge
Pump
Regulator
PVDD
CP2
CP1
GVDD
Trickle
Charge
High Side
Gate Drive
Low Side
Gate Drive
PVDD
BST_A
GH_A
SH_A
GL_A
SL_A
Motor
SO1
SO2
AVDD
DVDD
Offset
½ Vref
Offset
½ Vref
Current
Sense
Amplifier1
Current
Sense
Amplifier2
SN1
SP1
REF
DC_CAL
SN2
SP2
AGND
Rshunt1
PGND
Power
Pad
GND
AGND GND PGND
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