ET8161T

Description: ET8161 is an IC with built-in pre-driver designed
for three-phase BLDC motor driver applications. Due
to a high level of integration, few peripheral
components are required. The chip supports sensored
SVPWM (ET8161N) and sensorless FOC to reduce
audible noise and minimize torque ripple in motor
drives. Motor parameters, startup control parameters
and speed regulation mode can be configured via GUI,
and are stored in built-in EEPROM. Analog voltage
input, PWM or I2C interface is available for motor
speed regulation. Moreover, the chip integrates speed
indicator to read motor speed in real time via
FG/RD_SDA pin or I2C interface. In addition, the chip
is secured with a wide range of protection features,
including over-current protection (OCP), current
limiting protection (CLP), under-voltage lockout
(UVLO), temperature sensor detect (TSD), motor lock
protection (MLP), configurable maximum speed
protection, bus voltage protection, abnormal Hall
input detection (HALLERR) protection, etc. The chip
also supports power closed-loop control.

Features: ◼ VCC/VDRV range: 7V ~ 18V
◼ Sensorless FOC
◼ Hall-based FOC (Hall-IC/Hall-Sensor)
◼ Hall-based SVPWM (Hall-IC/Hall-Sensor)
◼ 6N pre-driver with configurable deadtime
◼ Drive current: +0.8A/-0.8A
◼ Constant speed control mode, constant current
control mode or constant power control mode
is optional.
◼ Forward and reverse direction control
◼ FG and RD output
◼ PWM, analog voltage input or I2C interface for
motor speed regulation
◼ Support multi-stage lead angle curve to fit motor
characteristics
◼ Soft-on and soft-off features protect the motor
from abrupt startup and reduces current shock
and noise
◼ Support protection features, including OCP, CLP,
UVLO, TSD, MLP, configurable maximum
speed protection, bus voltage protection,
abnormal Hall input detection (HALLERR)
protection (ET8161N), etc.