DRV8307_15 Datasheet, PDF (1/34 Pages) Texas Instruments – DRV8307 Brushless DC Motor Controller

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DRV8307 Brushless DC Motor Controller
DRV8307
SLVSCK2 – APRIL 2014
1 Features
•1 Three-Phase Brushless DC Motor Controller
– PWM Input for Speed Control
• Operating Supply Voltage 8.5 to 32 V
• 30-mA Gate-Drive Current to 6 N-Channel
MOSFETs
• Integrated Current Sense Amplifier
• 5-V Regulator for Hall Sensors
• Low-Power Standby Mode
• Locked Rotor Detection and Restart
• Integrated Overcurrent and Overtemperature
Protection
• 6- × 6-mm VQFN Package, 0.5-mm Pitch
2 Applications
• Industrial Pumps and Fans
• White Goods
• Robotic Appliances
3 Description
The DRV8307 is a three half-bridge pre-driver that
drives six N-type MOSFETs 30 mA with a single
power supply. Aimed at sensored three-phase
brushless DC motors, the DRV8307 is driven by a
single PWM input and supports integrated
commutation logic with three Hall sensor inputs. A
separate 5-V regulator is also included to be used to
power Hall-effect sensors and other external
components.
The DRV8307 includes a current sense input for
current limiting and protection. The current limit can
be set by adjusting the value of the R_ISENSE sense
resistor.
Motor operation (start and stop) is controlled through
the ENABLEn terminal. If the ENABLEn terminal is
set high and motor rotation has stopped, the device
enters into a low-power standby state, thereby
conserving overall system power during periods of
inactivity.
Protection features are also included in the DRV8307
device such as locked rotor detection, as well as
overcurrent and overtemperature protection and
undervoltage lockout to bolster overall system
robustness and reliability.
Device Information
ORDER NUMBER
PACKAGE
BODY SIZE
DRV8307RHA
VQFN (40)
6 mm × 6 mm
4 Simplified Schematic
VM (+8.5 to 32 V)
VM (+8.5 to 32 V)
Clock for PWM
Direction
Brake
Enable
FETs
(External)
M
HALLOUT
FAULT
DRV8307
+5 V or VM
HALL
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.