SLLSFU1A
December 2023 – July 2024
MCF8315C
PRODMIX
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Characteristics of the SDA and SCL bus for Standard and Fast mode
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Output Stage
6.3.2
Device Interface
6.3.2.1
Interface - Control and Monitoring
6.3.2.2
I2C Interface
6.3.3
Step-Down Mixed-Mode Buck Regulator
6.3.3.1
Buck in Inductor Mode
6.3.3.2
Buck in Resistor mode
6.3.3.3
Buck Regulator with External LDO
6.3.3.4
AVDD Power Sequencing from Buck Regulator
6.3.3.5
Mixed Mode Buck Operation and Control
6.3.3.6
Buck Under Voltage Protection
6.3.3.7
Buck Over Current Protection
6.3.4
AVDD Linear Voltage Regulator
6.3.5
Charge Pump
6.3.6
Slew Rate Control
6.3.7
Cross Conduction (Dead Time)
6.3.8
Motor Control Input Sources
6.3.8.1
Analog Mode Motor Control
6.3.8.2
PWM Mode Motor Control
6.3.8.3
I2C based Motor Control
6.3.8.4
Frequency Mode Motor Control
6.3.8.5
Speed Profiles
6.3.8.5.1
Linear Reference Profiles
6.3.8.5.2
Staircase Reference Profiles
6.3.8.5.3
Forward-Reverse Reference Profiles
6.3.9
Starting the Motor Under Different Initial Conditions
6.3.9.1
Case 1 – Motor is Stationary
6.3.9.2
Case 2 – Motor is Spinning in the Forward Direction
6.3.9.3
Case 3 – Motor is Spinning in the Reverse Direction
6.3.10
Motor Start Sequence (MSS)
6.3.10.1
Initial Speed Detect (ISD)
6.3.10.2
Motor Resynchronization
6.3.10.3
Reverse Drive
6.3.10.3.1
Reverse Drive Tuning
6.3.11
Motor Start-up
6.3.11.1
Align
6.3.11.2
Double Align
6.3.11.3
Initial Position Detection (IPD)
6.3.11.3.1
IPD Operation
6.3.11.3.2
IPD Release Mode
6.3.11.3.3
IPD Advance Angle
6.3.11.4
Slow First Cycle Start-up
6.3.11.5
Open loop
6.3.11.6
Transition from Open to Closed Loop
6.3.12
Closed Loop Operation
6.3.12.1
Closed Loop Acceleration/Deceleration Slew Rate
6.3.12.2
Speed PI Control
6.3.12.3
Current PI Control
6.3.12.4
Torque Mode
6.3.12.5
Overmodulation
6.3.13
Motor Parameters
6.3.13.1
Motor Resistance
6.3.13.2
Motor Inductance
6.3.13.3
Motor Back-EMF constant
6.3.14
Motor Parameter Extraction Tool (MPET)
6.3.15
Anti-Voltage Surge (AVS)
6.3.16
Active Braking
6.3.17
Output PWM Switching Frequency
6.3.18
PWM Modulation Schemes
6.3.19
Dead Time Compensation
6.3.20
Motor Stop Options
6.3.20.1
Coast (Hi-Z) Mode
6.3.20.2
Low-Side Braking
6.3.20.3
Active Spin-Down
6.3.21
FG Configuration
6.3.21.1
FG Output Frequency
6.3.21.2
FG during open loop
6.3.21.3
FG during idle and fault
6.3.22
DC Bus Current Limit
6.3.23
Protections
6.3.23.1
VM Supply Undervoltage Lockout
6.3.23.2
AVDD Undervoltage Lockout (AVDD_UV)
6.3.23.3
BUCK Under Voltage Lockout (BUCK_UV)
6.3.23.4
VCP Charge Pump Undervoltage Lockout (CPUV)
6.3.23.5
Overvoltage Protection (OVP)
6.3.23.6
Overcurrent Protection (OCP)
6.3.23.6.1
OCP Latched Shutdown (OCP_MODE = 00b)
6.3.23.6.2
OCP Automatic Retry (OCP_MODE = 01b)
6.3.23.7
Buck Overcurrent Protection
6.3.23.8
Hardware Lock Detection Current Limit (HW_LOCK_ILIMIT)
6.3.23.8.1
HW_LOCK_ILIMIT Latched Shutdown (HW_LOCK_ILIMIT_MODE = 00xxb)
6.3.23.8.2
HW_LOCK_ILIMIT Automatic recovery (HW_LOCK_ILIMIT_MODE = 01xxb)
6.3.23.8.3
HW_LOCK_ILIMIT Report Only (HW_LOCK_ILIMIT_MODE = 1000b)
6.3.23.8.4
HW_LOCK_ILIMIT Disabled (HW_LOCK_ILIMIT_MODE= 1xx1b)
6.3.23.9
Motor Lock (MTR_LCK)
6.3.23.9.1
MTR_LCK Latched Shutdown (MTR_LCK_MODE = 00xxb)
6.3.23.9.2
MTR_LCK Automatic Recovery (MTR_LCK_MODE= 01xxb)
6.3.23.9.3
MTR_LCK Report Only (MTR_LCK_MODE = 1000b)
6.3.23.9.4
MTR_LCK Disabled (MTR_LCK_MODE = 1xx1b)
6.3.23.10
Motor Lock Detection
6.3.23.10.1
Lock 1: Abnormal Speed (ABN_SPEED)
6.3.23.10.2
Lock 2: Abnormal BEMF (ABN_BEMF)
6.3.23.10.3
Lock3: No-Motor Fault (NO_MTR)
6.3.23.11
Minimum VM (undervoltage) Protection
6.3.23.12
Maximum VM (overvoltage) Protection
6.3.23.13
MPET Faults
6.3.23.14
IPD Faults
6.3.23.15
Thermal Warning (OTW)
6.3.23.16
Thermal Shutdown (TSD)
6.4
Device Functional Modes
6.4.1
Functional Modes
6.4.1.1
Sleep Mode
6.4.1.2
Standby Mode
6.4.1.3
Fault Reset (CLR_FLT)
6.5
External Interface
6.5.1
DRVOFF Functionality
6.5.2
DAC output
6.5.3
Oscillator Source
6.5.3.1
External Clock Source
6.5.4
External Watchdog
6.6
EEPROM access and I2C interface
6.6.1
EEPROM Access
6.6.1.1
EEPROM Write
6.6.1.2
EEPROM Read
6.6.2
I2C Serial Interface
6.6.2.1
I2C Data Word
6.6.2.2
I2C Write Transaction
6.6.2.3
I2C Read Transaction
6.6.2.4
I2C Communication Protocol Packet Examples
6.6.2.5
I2C Clock Stretching
6.6.2.6
CRC Byte Calculation
7
EEPROM (Non-Volatile) Register Map
7.1
Algorithm_Configuration Registers
7.2
Fault_Configuration Registers
7.3
Hardware_Configuration Registers
7.4
Internal_Algorithm_Configuration Registers
8
RAM (Volatile) Register Map
8.1
Fault_Status Registers
8.2
System_Status Registers
8.3
Device_Control Registers
8.4
Algorithm_Control Registers
8.5
Algorithm_Variables Registers
9
Application and Implementation
9.1
Application Information
9.2
Typical Applications
9.2.1
Application Curves
9.2.1.1
Motor startup
9.2.1.2
MPET
9.2.1.3
Dead time compensation
9.2.1.4
Auto handoff
9.2.1.5
Anti voltage surge (AVS)
9.3
Power Supply Recommendations
9.3.1
Bulk Capacitance
9.4
Layout
9.4.1
Layout Guidelines
9.4.2
Thermal Considerations
9.4.2.1
Power Dissipation
10
Device and Documentation Support
10.1
Support Resources
10.2
Trademarks
10.3
Electrostatic Discharge Caution
10.4
Glossary
11
Revision History
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
PWP|24
MPDS372A
RRY|32
MPQF713A
Thermal pad, mechanical data (Package|Pins)
PWP|24
PPTD395
Orderable Information
sllsfu1a_oa
Data Sheet
MCF8315C
Sensorless Field Oriented Control (FOC)
Integrated FET BLDC Driver
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