MCF8315DVPWPR-Texas Instruments-Price, Stock & Datasheet

The MCF8315D provides a single-chip, code-free sensorless FOC device for customers driving speed-controlled 12 to 24V brushless-DC motors (BLDC) or Permanent Magnet Synchronous motor (PMSM) up to 4A peak current. The MCF8315D integrates three ½-bridges with 40V absolute maximum capability and a very low RDS(ON) of 240/250/265mΩ (high-side + low-side FETs). MCF8315D 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 the device 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 MCF8315D, is intended to protect the device, motor, and system against fault events.

Documentation for reference:

Refer MCF8315D EVM User’s Guide
Refer to the MCF8315D EVM GUI

Three-phase BLDC motor driver with integrated sensorless motor control algorithm
- Code-free Field Oriented Control (FOC)
- Speed, current, power and voltage control
- Forward and reverse windmilling support
- Configurable power and speed limit
- Lead angle adjustment for high efficiency
- Improved acoustic performance with soft-start, soft-stop and dead time compensation
- Offline motor parameter measurement with Motor Parameter Extraction Tool (MPET)
- Analog, PWM, freq. or I2C based speed input
- Configurable motor start-up and stop options
- Flux weakening for high speed operation
- Anti-voltage surge (AVS) protection
- Variable monitoring through DACOUT pins
4.5 to 35V operating voltage (40V abs max)
High output current capability: 4A 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
Configurable EEPROM with R/W security to store device configuration
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, PWM dithering and slew rate for EMI reduction
Suite of integrated protection features
- Supply under voltage lockout (UVLO)
- Supply over voltage protection (OVP)
- Motor lock detection
- Configurable current limit
- Thermal warning and shutdown (OTW/TSD)
- Fault condition indication pin (nFAULT)
- Optional fault diagnostics over I2C interface