DRV8305-Q1_16 Datasheet, PDF (16/54 Pages) Texas Instruments – Three-Phase Automotive Gate Driver

DRV8305-Q1
SLVSD12A – MAY 2015 – REVISED MARCH 2016
7.2 Functional Block Diagram
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DVDD
AVDD
VCP_LSD
CP2H CP2L CP1H CP1L
DVDD
AVDD
VCP_LSD
DVDD
LDO
WAKE
VREG/VREF
PWRGD
VREG
VREG
LDO
EN_GATE
INH_A
INL_A
INH_B
INL_B
INH_C
INL_C
nFAULT
SCLK
nSCS
SDI
SDO
SO1
SO2
SO3
Digital
Inputs
and
Outputs
VREG
SPI
AVDD
LDO
Low Side
Gate Drive
LDO
VCPH
High Side Gate Drive
2-Stage Charge Pump
VCPH
PVDD
PVDD
Core Logic
Control
Configuration
Timing
Protection
Thermal
Sensor
Voltage
Monitoring
VDRAIN
VDRAIN VCPH
+
HS
VDS
-
+
VDS
-
VCP_LSD
LS
Phase A Pre-Driver
VDRAIN VCPH
+
HS
VDS
-
+
VDS
-
VCP_LSD
LS
Phase B Pre-Driver
VDRAIN VCPH
+
HS
VDS
-
+
VDS
-
VCP_LSD
LS
Phase C Pre-Driver
VREG AVDD
Ref/k
Current
Sense
Amplifier 1
VREG AVDD
Ref/k
Current
Sense
Amplifier 2
VREG AVDD
Ref/k
Current
Sense
Amplifier 3
VDRAIN
GH_A
SH_A
GL_A
SL_A
PVDD
GH_B
SH_B
GL_B
SL_B
PVDD
GH_C
SH_C
GL_C
SL_C
SN1
SP1
SN2
SP2
SN3
SP3
GND GND
PowerPAD
16
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