PT8161N

Description: PT8161 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 (FT8161N) 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: 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 I
2C 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 (PT8161N), etc