MP6505 4.5-16V, 400mA Single-Phase Brushless-DC–Motor Driver TSSOP16
MP6505 4.5-16V, 400mA Single-Phase Brushless-DC–Motor Driver TSSOP16

MP6505 4.5-16V, 400mA Single-Phase Brushless-DC–Motor Driver TSSOP16

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pMPS MP6505 — Single-Phase Brushless-DC–Motor Driver, 4.5-16V input, 400 mA output, TSSOP16./p
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    MP6505 4.5-16V, 400mA Single-Phase Brushless-DC–Motor Driver TSSOP16

    The MPS MP6505 is a Single-Phase Brushless-DC–Motor Driver. It operates from a 4.5 V to 16 V input and is rated for 400 mA. It is supplied in a TSSOP16 package.

    The MP6505 is a single-phase brushless-DC– motor driver, with an input voltage range of 4.5V to 16V and a maximum output current of 400mA.

    Key Specifications

    Part NumberMP6505
    FunctionSingle-Phase Brushless-DC–Motor Driver
    Input Voltage4.5 V to 16 V
    Current Rating400 mA
    InterfacePWM
    PackageTSSOP16
    Ordering CodesMP6505

    Features

    • Operating Voltage of 4.5V to 16V
    • Integrated Power MOSFETs (HS: 370mΩ; LS: 230mΩ)
    • Maximum Output Current 400mA
    • Low Quiescent Current (Not including Hall Sensor) of 1.4mA
    • Speed Control by Input Voltage or PWM Signal
    • Programmable Minimum Speed
    • Rotational-Speed Indicator
    • Locked-Rotor Indicator
    • Locked-Rotor Protection and Automatic Recovery
    • Thermal Protection and Automatic Recovery

    Typical Application Circuit

    MP6505 typical application circuit
    MP6505 typical application circuit, as published in the MPS datasheet.

    Applications

    • CPU Fan for Personal Computers or Servers

    Design Notes

    • Set dead time to match the external FET turn-off, not the datasheet typical. Too little risks shoot-through, too much distorts the current waveform at low duty cycle.
    • Use a Kelvin connection for the current-sense resistor; shared copper injects switching noise straight into the sense amplifier.
    • The thermal pad is the only heat path for most packages — via-stitch it to a ground plane with at least 9 vias.
    • PWM frequency trades switching loss against current ripple in the motor inductance; 20 kHz keeps the drive out of the audible band.
    • Add a brake or coast path so regeneration during a fast stop does not pump the supply rail.

    Common Questions

    What input voltage does the MP6505 support?
    4.5 V to 16 V. The rated output is 400 mA.
    Which package and ordering codes apply to the MP6505?
    TSSOP16; order codes include MP6505.
    What are the defining features of the MP6505?
    Operating Voltage of 4.5V to 16V Integrated Power MOSFETs (HS: 370mΩ; LS: 230mΩ)

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