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MCF8316C-Q1 Sensorless Field Oriented Control (FOC) Integrated FET BLDC Driver

1 Features

•AEC-Q100 qualified for automotive applications

–Temperature Grade-1 : –40

°

C ≤ T

A

≤ 125

°

C

•Three-phase BLDC motor driver with integrated

sensorless motor control algorithm

–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 I

2

C based speed input

–Configurable motor start-up and stop options

–Anti-voltage surge (AVS) protection

–Improved acoustic performance with soft-start,

soft-stop and dead time compensation

–Variable monitoring through DACOUT pins

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

•High output current capability: 8-A peak

•Low MOSFET on-state resistance

–R

DS(ON)

(HS + LS) at T

A

= 25°C : 95-mΩ (typ.)

•Low power sleep mode: Refer Table 7-7

–5-µA (maximum) at V

VM

= 24-V, T

A

= 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 60-kHz PWM frequency for low

inductance motor support

•Does not require external current sense resistors;

uses built-in current sensing

•Built-in 3.3-V, 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

–Supply under voltage lockout (UVLO)

–Supply over voltage protection (OVP)

–Motor lock detection (5 different types)

–Over current protection (OCP)

–Thermal warning and shutdown (OTW/TSD)

–Fault condition indication pin (nFAULT)

–Optional fault diagnostics over I

2

C interface

2 Applications

•Automotive Fan and Blowers

•Brushless-DC (BLDC) Motor Modules

•Residential and Living Fans

•Air Purifiers and Humidifier Fans

•Washer and Dishwashers Pumps

•CPAP Machines

3 Description

The MCF8316C-Q1 provides a single-chip, code-free

sensorless FOC device 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 MCF8316C-Q1 integrates three

½-bridges with 40-V absolute maximum capability and

a very low R

DS(ON)

of 95 mΩ (high-side + low-side

FETs). MCF8316C-Q1 integrates power management

circuits including an voltage-adjustable buck regulator

(3.3 V / 5 V, 170-mA) and LDO (3.3 V / 20 mA) that

can be used to power external circuits.

The FOC algorithm configuration can be stored

in non-volatile EEPROM, which allows the device

to operate stand-alone once the device has been

configured. The device receives a speed command

through a PWM input, analog voltage, variable

frequency square wave or I

2

C command. There are a

large number of protection features integrated into the

MCF8316C-Q1, intended to protect the device, motor,

and system against fault events.

Device Information

(1)

PART NUMBERPACKAGEBODY SIZE (NOM)

MCF8316C1V-Q1VQFN (40)7.00 mm x 5.00 mm

(1)For all available packages, see the orderable addendum at

the end of the data sheet.

Documentation for reference:

•Refer MCF8316C-Q1 tuning guide

•Refer to the MCF8316C-Q1 EVM GUI

MCF8316C

MOSFETs

Buck/LDO Regulator

Integrated Current Sensing

EEPROM

Sensorless

FOC

DIRECTION

BRAKE

I

2

C

Op



onal during opera



on;

I

2

C speed, diagnos



cs, or

on-the-



y con



gura



on

PWM, analog, frequency or

commanded over I

2

C

SPEED

FG

Speed feecback

nFAULT

A

B

C

4.5 to 35-V (40-V abs max)

8-A peak output current,

typically 12 to 24-V

Buck out

3.3 or 5.0-V, up to 170-mA

LDO out

3.3-V, up to 20-mA

Simplified Schematic

MCF8316C-Q1

SLLSFV2 – AUGUST 2023

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.

Produktspecifikationer