ADM00575 Microchip

MCP8063 3-Phase Brushless Sinusoidal Sensorless Motor Driver Features Description Automotive AEC-Q100 Qualified, PPAP available The MCP8063 device is a highly integrated 3-phase, upon request full-wave sensorless driver for brushless motors. It features a 180 sinusoidal drive, high torque output, Position Sensorless BLDC Drivers (no Hall and silent drive. Its integrated features and the wide Sensor required) power supply range (2V to 14V) make the MCP8063 an 180 Sinusoidal Drive for High Efficiency and Low ideal candidate for a broad range of motor Acoustic Noise characteristics, requiring no external tuning. Speed Supports 2V to 14V Power Supplies control can be achieved through either power supply Speed Control through Power Supply Modulation modulation (PSM) or pulse-width modulation (PWM). (PSM) and/or Pulse-Width Modulation (PWM) Due to the compact packaging and minimum bill of Built-In Frequency Generator (FG output signal) materials (power transistors integrated, no Hall sensor, Built-In Lock-Up Protection and Automatic no external tuning), the MCP8063 is optimized for fan Recovery Circuit (external capacitor not applications that require high efficiency and low necessary) acoustic noise at competitive costs. Frequency Built-In Overcurrent Limitation (1.5A) generator output enables precision speed control in closed-loop applications. The MCP8063 driver Built-In Overvoltage Protection includes a Lock-Up Protection mode, which turns off Built-In Thermal Shutdown Protection the output current when the motor is under lock Thermally Enhanced 8-Lead 4 mm x 4 mm DFN condition, and an automatic recovery that enables the Package with Exposed Pad fan to restart when the lock condition is removed. 23 kHz PWM Output Frequency Features such as motor overcurrent limitation and No External Tuning Required thermal shutdown protection improve motor system Optimized for Fan Cooling Systems reliability without additional efforts from design engineers. Typical Applications The MCP8063 is available in a compact thermally-enhanced 8-lead 4mmx4mm DFN Silent Notebook CPU/GPU Cooling Fans package with exposed pad. Air Ventilation System 12V 3-Phase BLDC Motors Package Types MCP8063 4x4 DFN* FG 1 8 PWM V 2 7 V BIAS EP DD 9 OUT1 OUT3 3 6 OUT2 GND 4 5 Top View * Includes Exposed Thermal Pad (EP) see Table 3-1. 2014 Microchip Technology Inc. DS20005257B-page 1MCP8063 Functional Block Diagram V DD V REF Motor Phase Detection Circuit V Regulator BIAS Overcurrent Limitation V DD FG OUT3 MCU V BIAS OUT2 OUT1 PWM PWM Input GND Thermal Protection DS20005257B-page 2 2014 Microchip Technology Inc. Output Drive Circuit