DRV8308_15 Datasheet, PDF (13/60 Pages) Texas Instruments – DRV8308 Brushless DC Motor Controller

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8.2 Functional Block Diagram
VM
0.1 µF
VM
CP1
0.1 µF
CP2
VM
VCP
1 µF
1 µF
VINT
0.1 µF
VREG
VSW
GND
PPAD
Power
Charge
Pump
VCP
1.8-V Linear
Regulator
5-V Linear
Regulator
ENABLE
10 V _{10-V Linear}
Regulator
CLKIN
DIR
BRAKE
ENABLE
RESET
Control
Inputs
Core
Logic
VCP
Phase U
pre-driver
10 V
VCP
Phase V
pre-driver
10 V
VCP
Phase W
pre-driver
10 V
-
PWM
Limiter
+
VLIMITER
-
SENSE
OCP
+
VSENSEOCP
FGOUT
LOCKn
FAULTn
SCLK
SDATAI
SCS
SDATAO
SMODE
Outputs
FG Input
Voltage
Monitoring
Hall
Differential
Comparators
OTP
+
Memory
-
SPI
Thermal
+
Sensor
-
+
Oscillator
-
DRV8308
SLVSCF7A – FEBRUARY 2014 – REVISED OCTOBER 2014
UHSG
U
ULSG
VHSG
V
VLSG
WHSG
W
WLSG
VM
bulk
VM
VM
VSW or VREG
Hall
Power
Hall Hall Hall
U
V
W
ISEN
RISENSE
FG sense
(optional)
FGINP
FGINN / TACH
FGFB
UHP
UHN
VHP
VHN
WHP
WHN
Optional
Optional
Optional
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