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Data Sheet
MCF8315DSensorless Field Oriented Control (FOC) Integrated FET
BLDC Driver
1 Features
- 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 Table 6-8
- 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