DRV8316C中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Three-phase BLDC motor driver

– Cycle-by-cycle current limit to limit phase

current

– Supports up to 200-kHz PWM frequency

– Active demagnetization to reduce power losses

? 4.5-V to 35-V operating voltage (40-V abs max)

? High output current capability: 8-A Peak

? Low MOSFET on-state resistance

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

? Low power sleep mode

– 1.5-μA at VVM = 24-V, TA = 25°C

? Multiple control interface options

– 6x PWM control interface

– 3x PWM control interface

– 6x PWM control interface with cycle by cycle

current limit

– 3x PWM control interface with cycle by cycle

current limit

? Does not require external current sense resistors,

built-in current sensing

? Flexible device configuration options

– DRV8316CR: 5-MHz 16-bit SPI interface for

device configuration and fault status

– DRV8316CT: Hardware pin based configuration

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

? Built-in 3.3-V (5), 30-mA LDO regulator

? Built-in 3.3-V/5-V, 200-mA buck regulator

? Built-in 3.3-V, 30-mA LDO

? Delay compensation reduces duty cycle distortion

? Suite of integrated protection features

– Supply undervoltage lockout (UVLO)

– Charge pump undervoltage (CPUV)

– Overcurrent protection (OCP)

– Thermal warning and shutdown (OTW/OTSD)

– Fault condition indication pin (nFAULT)

– Optional fault diagnostics over SPI interface

2 Applications

? CPAP machines

? Brushless-DC (BLDC) Motor Modules

? Printers

? Camera gimbals

? HVAC motors

? Small home appliances

? Office automation machines

? Factory automation and robotics

3 Description

DRV8316C integrates three H-bridges with 40-V

absolute maximum capability and a very low RDS(ON)

of 95 mΩ (high-side + low-side) to enable high power

drive capability for 12-V/24-V brushless-DC motors.

DRV8316C provides integrated current sensing which

eliminates the need for external sense resistors.

DRV8316C integrates power management circuits

including an voltage-adjustable buck regulator (3.3 V /

5 V, 200-mA) and LDO (3.3 V / 30 mA) that can be

used to power external circuits.

DRV8316C 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 trapezoid control using an

external microcontroller. DRV8316C is capable of

driving a PWM frequency of up to 200 kHz.

DRV8316C is highly configurable either through SPI

(DRV8316CR) or pins (DRV8316CT) - PWM mode.

slew rate, OCP level, current sense gain are some of

the configurable features.

A number of protection features including supply

undervoltage lockout (UVLO), overvoltage protection

(OVP), charge pump undervoltage (CPUV),

overcurrent protection (OCP), over-temperature

warning (OTW) and over-temperature shutdown

(OTSD) are integrated into DRV8316C to protect the

device, motor, and system against fault events. Fault

conditions are indicated by the nFAULT pin.

Refer Application Information for design consideration

and recommendation on device usage.