The MP6517 is a single-phase, brushless, DC motor driver with integrated power MOSFETs and a Hall effect sensor. The MP6517 drives single-phase, brushless, DC fan motors with up to 1.2A of output current limit. The IC has a 3.3V to 18V input voltage range and input line reverse voltage protection to save the external diode on the supply line.
The MP6517 controls the rotational speed through the PWM signal on the PWM pin. The MP6517 has a rotational speed detector feature and rotor lock fault indication on FG/RD with an open-drain collector output. The output speed versus the input duty curve can be programmed easily for flexible use. To reduce fan driver audible noise and power loss, the MP6517 features a soft on/off phase transition and automatic phase-lock function of the motor winding BEMF and current.
Full protection features include input over-voltage protection (OVP), under-voltage lockout (UVLO), rotor deadlocked protection, thermal shutdown, and input reverse protection.
The MP6517 requires a minimal number of external components to save solution cost. The MP6517 is available in a TSOT23-6 package.