DRV8305_15 Datasheet, PDF (16/53 Pages) Texas Instruments – DRV8305 Three Phase Gate Driver With Current Shunt Amplifiers and Voltage Regulator

DRV8305
SLVSCX2A – AUGUST 2015 – REVISED SEPTEMBER 2015
7.2 Functional Block Diagram
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WAKE
VREG
PWRGD
EN_GATE
INHA
INLA
INHB
INLB
INHC
INLC
nFAULT
SCLK
nSCS
SDI
SDO
SO1
SO2
SO3
DVDD
AVDD
VCP_LSD
DVDD
LDO
AVDD
LDO
VREG
Low Side
Gate Drive
LDO
VREG
LDO
Digital
Inputs
and
Outputs
SPI
Core Logic
Control
Configuration
Timing
Protection
Thermal
Sensor
Voltage
Monitoring
High Side Gate Drive
2-Stage Charge Pump
VCPH
VCPH
PVDD
PVDD
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
GHA
SHA
GLA
SLA
PVDD
GHB
SHB
GLB
SLB
PVDD
GHC
SHC
GLC
SLC
SN1
SP1
SN2
SP2
SN3
SP3
GND GND
PowerPAD
16
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