MCF8315C-Q1中文资料汽车级、40V 最大电压、4A 峰值电流、无传感器磁场定向控制 (FOC) 三相 BLDC 电机驱动器数据手册TI规格书

描述 Description

The MCF8315C-Q1 provides a single-chip, code-free sensorless FOC solution for customers driving speed-controlled 12 to 24V brushless-DC motors (BLDC) or Permanent Magnet Synchronous motor (PMSM) up to 4A peak current. The MCF8315C-Q1 integrates three ½-bridges with 40V absolute maximum capability and a low RDS(ON) of 240/250/265mΩ (high-side + low-side FETs). MCF8315C-Q1 integrates power management circuits including a voltage-adjustable buck regulator (3.3V/5V, 170mA) and LDO (3.3V/20mA) 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 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 MCF8315C-Q1, intended to protect the device, motor, and system against fault events.

MCF8315C-Q1 is available in three packages - 40-pin 7x5mm wettable-flank QFN (RGF), 32-pin 6x4mm wettable-flank QFN (RRY) and 24-pin 7.8x6.4mm HTSSOP (PWP).

特性 Features

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 I2C based speed input

Configurable motor start-up and stop options

Anti-voltage surge (AVS) protection

Improved acoustic performance with automatic dead time compensation

Variable monitoring through DACOUT pin



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

High output current capability: 4-A peak

Low MOSFET on-state resistance

RGF: RDS(ON)(H+L) at TJ=25°C: 240mΩ(typ.)

RRY: RDS(ON)(H+L) at TJ=25°C: 250mΩ(typ.)

PWP: RDS(ON)(H+L) at TJ=25°C: 265mΩ(typ.)



Low power sleep mode: Refer

5µA (maximum) at VVM = 24V, 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 60-kHz PWM frequency for low inductance motor support

Does not require external current sense resistors; uses built-in current sensing

Built-in 3.3V, 20mA LDO regulator

Built-in 3.3V/5V, 170mA buck regulator

Dedicated DRVOFF pin to disable (Hi-Z) outputs

Spread spectrum and slew rate for EMI mitigation

A 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 I2C interface