A3930KJP-T

ALLEGRO MICROSYSTEMS  A3930KJP-T  芯片, 无刷直流电机BLDC驱动器, 三相

The is a 3-phase hall short detection brushless DC BLDC Motor Controller for use with N-channel external power MOSFETs. It incorporates much of the circuitry required to design a cost effective 3-phase motor drive system and has been specifically designed for automotive applications. A key automotive requirement is functionality over a wide input supply range. Unique charge pump regulator provides adequate gate drive for battery voltages down to 7V and allows the device to operate with a reduced gate drive at battery voltages down to 5.5V. Power dissipation in the charge pump is minimized by switching from a voltage doubling mode at low supply voltage to a dropout mode at the nominal running voltage of 14V. A bootstrap capacitor is used to provide the above-battery supply voltage required for N-channel MOSFETs. An internal charge pump for the high-side drive allows for DC operation.

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Synchronous rectification

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Cross-conduction protection

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Charge pump and top-OFF charge pump for 100% PWM

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Integrated commutation decoder logic

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Extensive diagnostics output

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Provides 5V hall sensor power

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Low-current sleep mode

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Indicates logic fault