DRV8316CRRGFR

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 or 5 V, 200-mA) and LDO (3.3 or 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.

Applications

• CPAP machines
• Brushless-DC (BLDC) Motor Modules
• Printers
• Camera gimbals
• HVAC motors
• Small home appliances
• Office automation machines
• Factory automation and robotics

Key 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