1 Features

? Three-phase BLDC motor driver

– Configurable slew rate for EMI mitigation

– Programmable gain current sensing

– Supports up to 200-kHz PWM frequency

– Integrated shoot through protection

? 4.5-V to 20-V operating voltage

– 24-V absolute maximum voltage

? High output current capability

– 5-A peak current drive

? Low on-state resistance MOSFETs

– RDS(ON) (HS + LS) at TA = 25°C : 130-mΩ

(typical)

? Ultra-low Q-current sleep mode

– 3-μA (max.) at VVM = 12-V, TA = 25°C

? Multiple control interface options

– 6x PWM control interface

– 3x PWM control interface

? Integrated current sensing

– No external current sense resistor required

– Three-phase current sense outputs

? SPI and hardware device variants

– 10-MHz SPI interface variant for flexibility

– Pin configurable variant for simplicity

? Supports 1.8-V, 3.3-V, and 5-V logic inputs

? Built-in 3.3-V ± 4.5, 80-mA LDO regulator

? Integrated protection features

– VM under voltage lockout (UVLO)

– VM over voltage protection (OVP)

– Charge pump under voltage (CPUV)

– Over current protection (OCP)

– Over temperature warning and shutdown

(OTW/OTS)

– Fault condition indication pin (nFAULT)

2 Applications

? Brushless-DC (BLDC) Motor Modules

? Air Purifiers

? Dishwasher Pumps

? Vacuum Robots

? Washer and Dryer Pumps

? Drones and Hand-held Gimbals

? Laptop, Desktop, and Server Fans

? Coffee Machines

3 Description

DRV8317 provides three integrated MOSFET halfbridges

for driving three-phase brushless DC (BLDC)

motors with 5-V, 9-V, 12-V, or 18-V DC rails or 2s

to 4s batteries. The device provides integrated threephase

current sensing which eliminates the need for

external sense resistors. DRV8317 has an integrated

LDO that provides a regulated 3.3-V rail capable of

delivering up to 80mA for external loads like MCU,

logic circuits, hall sensors etc.,

DRV8317 provides a configurable 6x or 3x PWM

control scheme which can be used to implement

sensored or sensorless field-oriented control (FOC),

sinusoidal control, or trapezoidal control using an

external microcontroller. DRV8317 is capable of

driving a PWM frequency of up to 200 kHz. DRV8317

is highly configurable either through SPI (DRV8317S)

or pins (DRV8317H) - PWM mode, slew rate, current

sense gain are some of the configurable features.

A number of protection features including supply

under voltage lockout (UVLO), over voltage protection

(OVP), charge pump under voltage (CPUV), over

current protection (OCP), over temperature warning

(OTW) and over temperature shutdown (OTS) are

integrated into DRV8317 to protect the device, motor,

and system against fault events. Fault conditions are

indicated by the nFAULT pin.