MCF8316A
SLLSFI0A – AUGUST 2021 – REVISED DECEMBER 2021
MCF8316A Sensorless Field Oriented Control (FOC) Integrated FET BLDC Driver
1 Features
3 Description
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Three-phase BLDC motor driver with integrated
sensorless motor control algorithm
The MCF8316A provides a single-chip, code-free
sensorless FOC solution for customers driving speed-
controlled 12- to 24-V brushless-DC motors (BLDC)
or Permanent Magnet Synchronous motor (PMSM) up
to 8-A peak current. The MCF8316A integrates three
1/2-H bridges with 40-V absolute maximum capability
and a very low RDS(ON) of 95 mΩ(high-side + low-
side). Power management features of an adjustable
buck regulator and LDO generate the 3.3-V or 5.0-V
voltage rails for the device and can be used to power
external circuits.
– Code-free Field Oriented Control (FOC)
– Offline motor parameters measurement with
Motor Parameter Extraction Tool (MPET)
– 5-point configurable speed profile support
– Windmilling support through forward
resynchronization and reverse drive
– Analog, PWM, freq. or I2C based speed input
– Configurable motor startup and stop options
– Anti-voltage surge protections prevents
overvoltage
– Improved acoustic performance with automatic
dead time compensation
4.5- 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
– 3-µA (maximum) at VVM = 24-V, TA = 25°C
Speed loop accuracy: 3% with internal clock and
1% with external clock reference
Customer-configurable non-volatile memory
(EEPROM) to store device configuration
Supports up to 75-kHz PWM frequency for low
inductance motor support
Does not require external current sense resistors,
built-in current sensing
The algorithm configuration can be stored in non-
volatile EEPROM, which allows the device to operate
stand-alone once it has been configured. The device
receives a speed command through a PWM input,
analog voltage, variable frequency square wave or
I2C command. There are a large number of protection
features integrated into the MCF8316A, intended to
protect the device, motor, and system against fault
events.
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Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
MCF8316A1V
VQFN (40)
7.00 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Documentation for reference:
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Refer E2E FAQ for clarification.
Refer MCF8316A tuning guide
Refer to the MCF8316A EVM GUI
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Built-in 3.3-V ±5%, 20-mA LDO regulator
Built-in 3.3-V/5-V, 170-mA buck regulator
Dedicated DRVOFF pin to disable (Hi-Z) outputs
Spread spectrum and slew rate for EMI mitigation
Suite of Integrated protection features
LDO out
3.3-V, up to 20-mA
4.5 to 35-V (40-V abs max)
Buck out
3.3 or 5.0-V, up to 170-mA
– Supply undervoltage lockout (UVLO)
– Motor lock detection (5 different types)
– Overcurrent protection (OCP)
– Thermal warning and shutdown (OTW/TSD)
– Fault condition indication pin (nFAULT)
– Optional fault diagnostics over I2C interface
SPEED
PWM, analog, frequency or
commanded over I2C
MCF8316A
A
B
C
DIRECTION
BRAKE
Sensorless
FOC
FG
Speed feecback
EEPROM
nFAULT
I2C
Op onal during opera on;
I2C speed, diagnos cs, or
on-the- y con gura on
Buck/LDO Regulator
Integrated Current Sensing
2 Applications
8-A peak output current,
typically 12 to 24-V
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Brushless-DC (BLDC) Motor Modules
Residential and Living Fans
Air Purifiers and Humidifier Fans
Washer and Dishwashers Pumps
Automotive Fan and Blowers
Medical CPAP Blowers
Simplified Schematic
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.
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