DRV8301_14 Datasheet, PDF (22/28 Pages) Texas Instruments – Three Phase Pre-Driver with Dual Current Shunt Amplifiers and Buck Regulator

DRV8301
SLOS719B – AUGUST 2011 – REVISED AUGUST 2013
Application Schematic Example
Example:
Buck: PVDD= 3.5V – 40V, Iout_max = 1.5A, Vo = 3.3V, Fs = 570 kHz
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6.8 nF
VCC _120pF
205 kW
0 .015 mF
31.6 kW
10 kW
VCC
10 kW
16 .2 K
10kW
10kW
RT _CLK
COMP
VSENSE
PWRGD
OCTW
FAULT
DTC
SCS
SDI
SDO
SCLK
DC_CAL
Motor
Controller
2.2 mF
GVDD
22 nF
CP1
CP2
EN_GATE
INH_A
INL_A
INH_B
INL_B
INH_C
1 mF
INL_C
DVDD
REF
SO1
SO2
1 mF
AVDD
AGND
AGND GND
SS _TR
EN_BUCK
PVDD 2
PVDD 2
BST _BK
PH
PH
VDD _SPI
BST _A
GH _A
0.1 mF
0.1 mF
VCC
0.1 mF
PVDD
4.7 mF
22 mH
47 mF
SH_A
GL _A
SL_A
BST _B
0.1 mF
GH _B
SH_B
GL _B
SL_B
BST_ C
GH_ C
SH_ C
GL_ C
SL_ C
0.1 mF
SN1
1 nF ^{10 mW RS1}
SP 1
SN2
1 nF
SP 2
PVDD 1
0 .1 mF
PVDD
4.7 mF
PVDD
3 .3
10 nF
470 mF
VCC ( 3.3V )
PVDD
MOTOR
RS2
10mW
Power
Pad
GND
GND PGND
22
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