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The MP6517A and MP6517B are single-phase, brushless, DC motor drivers with integrated power MOSFETs and a Hall effect sensor. The MP6517A/MP6517B drives single-phase brushless DC fan motors with up to 2A of output current limit. The IC has a 3.3V to 16V input voltage range and input line reverse voltage protection to save the external diode on the supply line.
The MP6517A/MP6517B controls the rotational speed through the PWM signal on the PWM pin. The MP6517A/MP6517B has a rotational speed detection 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 MP6517A/MP6517B 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 deadlock protection, thermal shutdown, and input reverse protection.
The MP6517A/MP6517B requires a minimal number of external components to save solution cost. The MP6517A/MP6517B is available in TSOT23-6-L, TSOT23-6-R, TSOT23-6-SL, and TSOT23-6-RSL packages.
- Embedded Hall Sensor with High Sensitivity
- Wide 3.3V to 16V Operating Input Range
- Up to 2A Programmable Current Limit
- Integrated Power MOSFETs: Total 850mΩ (HS + LS)
- Programmable Speed Curve
- Built-In Adjustable Speed Curve Corner Setting
- Automatic Phase Lock Detection of Winding BEMF and Current Zero-Crossing
- Soft On/Off Phase Transition
- Rotational Speed Indicator (FG) Signal
- 12kHz to 48kHz PWM Input Frequency Range
- Fixed 26kHz Output Switching Frequency
- Input Line Reverse Voltage Protection (RVP)
- Rotor Deadlock (RD) Protection and Automatic Recovery
- Thermal Protection and Automatic Recovery
- Built-In Input OVP, UVLO, and Automatic Recovery
- MP6517A Supports Standby Mode
- Available in TSOT23-6-L, TSOT23-6-R, TSOT23-6-SL, and TSOT23-6-RSL Packages
- Number of Half-Bridges2
- Hall InputYes
- Iout (max) (A)2
- Vin (max) (V)16
- Vin (min) (V)3.3
- PackageTSOT23-6-L, TSOT23-6-R, TSOT23-6-RSL, TSOT23-6-SL