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A5929 Datasheet(PDF) 1 Page - Allegro MicroSystems |
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A5929 Datasheet(HTML) 1 Page - Allegro MicroSystems |
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1 / 17 page  The A5929 is a full-bridge controller for use with n-channel external power MOSFETs and is specifically designed for automotive applications. A unique charge pump regulator provides full (>10 V) gate drive at battery voltages down to 7 V and allows the A5929 to operate with reduced gate drive at battery voltages down to 5.5 V. A bootstrap capacitor is used to provide the above battery supply voltage required for n-channel MOSFETs. One logic level input is provided for each of the four power MOSFETs in the full-bridge, allowing motors to be driven with any PWM scheme defined by an external controller. The power MOSFETs are protected from cross-conduction by integrated crossover control. Motor phase short-to-supply and short-to-ground detection is provided by independent drain-source voltage monitors on each MOSFET. Short faults, supply undervoltage, and chip over-temperature conditions are indicated by a single open drain fault output. The A5929 is supplied in a 24-pin TSSOP power pack- age with an exposed thermal pad (package type LP). This package is available in lead (Pb) free versions, with 100% matte-tin lead frame plating (suffix –T). A5929-DS • High current Full-Bridge gate drive for n-channel MOSFETs • Cross-conduction protection • 5.5 V to 50 V Supply Voltage Range • Motor phase short to supply and short to ground detection • Undervoltage, overtemperature monitors • Low Current Sleep Mode Automotive Full-Bridge MOSFET Driver Typical Application Diagram Not to scale A5929 MCU A5929 VDD VBAT PACKAGE: 24-Pin eTSSOP with exposed thermal pad (suffix LP) FEATURES AND BENEFITS DESCRIPTION |
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