The MP6570 is available in a QFN-32 (4mmx4mm) package. Non-volatile memory (NVM) is employed in the MP6570 to store parameters programmed through the selectable I 2C, SPI, or RS485 digital interface.Īpplication design is aided by the eMotion System TM Virtual Bench online developer tool.įull protection features include over-current protection (OCP), rotor-lock protection, and input bus over-voltage (OVP) and over-current protection (OCP). The position sensor has a data refresh rate up to 1MHz and up to 14-bit position resolution, ideal for BLDC and PMSM motor controls, especially in applications that require high speed or position accuracy. The three-phase voltage of the motor is modulated through an SVPWM module, which has up to 12-bit resolution at a 20kHz switching frequency.Ī high-speed, high-accuracy magnetic angular sensor is embedded in the IC for rotor position and speed feedback. A 10-bit ADC is employed for accurate sampling of each phase current. The reference command comes from either the digital interface or the pulse-width modulation (PWM)/clock input pin. The operation of the MP6570 supports three modes, including speed mode, position mode, and torque mode. The MP6570 is used for applications with three-phase PMSM and BLDC motors. The MP6570 is a high-performance motor controller that incorporates field-oriented control (FOC) algorithms, SVPWM modulation technology, and an accurate embedded angle sensor. Switching Converters and Controllers AECQ Grade.
An SPI interface is provided for parameter setting and monitoring the system health and utilized through the PCA9655E's 16 bits of General Purpose parallel Input and Output (GPIO) expansion. With an in-built linear regulator for powering an external circuit, a watchdog timer and a Local Interconnect Network (LIN) transceiver, the LV8907 offers the smallest system solution footprint. Hence, BLDC fans are widely used in computer peripherals, vehicles, aircrafts, hand-held power tools and other sophisticated applications.
It supports open-loop as well as closed-loop speed control with user configurable startup, speed setting and proportional/integral (PI) control coefficients, making it suitable for a wide range of motor and load combinations. The device offers a rich set of system protection and diagnostic functions such as over-current, over-voltage, short-circuit, under-voltage, over-temperature and many more. An on-chip two-stage charge pump provides required gate current for a wide range of ultra low RDS(ON) type external N-MOSFETs. The BLDC-GEVK evaluates the LV8907, a high performance, sensor-less three-phase BLDC motor controller with integrated gate drivers for driving external N-MOSFETs.