AN44150A

DReovcisNioon. . T1A4-EA-06256 Product Standards AN44150A Realizing in One IC, PWM Output Open Control by External PWM Signal and PWM Output Loop Control by External DC Voltage and Current Peak Detection. 3-Phase Brushless Motor Drive IC Features Applications  Supply voltage range: 6.0 V to 36 V  Driver IC for 3-phase brushless motor  Built-in 5-V regulator  3-phase 120-deg--energization drive system by 3-Hall-sensor  Drive control mode is selectable: ･PWM open control by an external PWM signal Package (PWM through drive) ･PWM loop control by external DC detection. (OFF time fixed current voltage and current peak peak detection PWM drive)  24-pin plastic (QFN type, quad flat non-lead package size: 4 mm  4 mm)  OFF time setting switching function  Rotation direction switching function  FG pulse switching function (1FG or 3FG)  Short-brake/Free-running function  Built in various protection functions: under voltage lock out (UVLO), thermal protection, motor restricted protection , overcurrent protection and drive output short protection Summary AN44150A is a driver IC for 3-phase brushless motor. The rotor position detection by a 3-Hall-sensor and a 120-deg--energization drive system are adopted. It is selectable the PWM through drive mode or the OFF time fixed current peak detection PWM drive mode. Low power consumption of a motor module is realized, and it contributes to the application expansion of various motor units. Application Circui...