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DRV8308 View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
DRV8308 Brushless DC Motor Controller TI
Texas Instruments TI
DRV8308 Datasheet PDF : 59 Pages
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www.ti.com
5 Pin Configurations and Functions
DRV8308
SLVSCF7B – FEBRUARY 2014 – REVISED NOVEMBER 2017
RHA Package
40-Pin VQFN With Exposed Thermal Pad
Top View
UHP 1
UHN 2
VHP 3
VHN 4
WHP 5
WHN 6
VSW 7
FGFB 8
FGINN_TACH 9
FGINP 10
GND
TBD
30 CP1
29 CP2
28 VCP
27 VM
26 GND
25 VINT
24 VREG
23 RESET
22 ENABLE
21 DIR
Pin Functions
NAME
PIN
NO.
I/O (1)
DESCRIPTION
EXTERNAL COMPONENTS OR CONNECTIONS
POWER AND GROUND
CP1
30
PWR
Charge pump flying capacitor
Connect a 0.1-μF 35-V capacitor between CP1 and CP2
CP2
29
PWR
GND
Ground reference. Pin 26 and the
26, PPAD PWR exposed thermal pad are internally
connected.
Connect to board GND
VCP
28
PWR Charge pump storage capacitor
Connect a 1-μF 35-V ceramic capacitor to VM
VINT
25
PWR
Internal 1.8-V core voltage regulator
bypass
Bypass to GND with a 1-μF 6.3-V ceramic capacitor
VM
27
PWR Motor supply voltage
Connect to motor supply voltage.
Bypass to GND with a 0.1-μF ceramic capacitor, plus a large
electrolytic capacitor (47 μF or larger is recommended), with a
voltage rating of 1.5× to 2.5× VM.
VREG
24
PWR
5-V regulator output. Active when
ENABLE is active.
Bypass to GND with a 0.1-μF 10-V ceramic capacitor. Can
provide 5-V power to Hall sensors.
VSW
7
PWR
Switched VM power output. When
ENABLE is active, VM is applied to this
pin.
Can be used for powering Hall elements, along with added
series resistance.
CONTROL
BRAKE
Causes motor to brake. Polarity is
20
I programmable. Internal pulldown
resistor.
CLKIN
The clock input, used in Clock
19
I Frequency Mode and Clock PWM
Mode. Internal pulldown resistor.
Sets motor rotation direction. Polarity is
DIR
21
I programmable. Internal pulldown
resistor.
(1) I = input, O = output, OD = open-drain output, I/O = input/output
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