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A4915 : Three-Phase MOSFET Driver

The A4915 is a three-phase MOSFET driver capable of high current gate drive for 6 all N-channel power MOSFETs. An internal charge pump ensures gate drive down to 7 V supply and provides limited gate drive down to 5 V. The device improves time to market by eliminating complicated software development which saves overall system costs for customers.
A bootstrap capacitor is used to generate a supply voltage greater than the source voltage of the high side MOSFET, required for N-channel MOSFETs.
Internal synchronous rectification control circuitry is provided to improve power dissipation in the external MOSFETs during PWM operation. Internal circuit protection includes latched thermal shutdown, dead time protection, and undervoltage lockout. Special power up sequencing is not required.
Allegro recommended hall latches: APS13290-1.
The A4915 is supplied in a 28-pin TSSOP with an exposed thermal pad (suffix LP) and a 28-contact 5 × 5 mm QFN with an exposed thermal pad (suffix ET). These packages are lead (Pb) free, with 100% matte tin leadframe plating.

Product Number: A4915

Class: Fan, Motor Controllers, Drivers, BLDC Drivers, Fan Drivers

Tag: BLDC Drivers, Three-Phase Sensorless Drivers, Motor, Motion, Ignition Controllers & Drivers, Brushless DC Motor Controllers

5 to 50 V supply voltage
Latched TSD with fault output
Drives six N-channel high current MOSFETs
Internally controlled synchronous rectification
Speed voltage input enables internal PWM duty cycle control of full bridge
Center aligned PWM
Internal UVLO and crossover current protection
Hall switch inputs
Adjustable dead time protection
Low power sleep mode for battery-powered applications

Part Number Type Operating Supply Current Technology Mounting Style Number of Outputs Moisture Sensitive Applications Output Voltage Operating Temperature Voltage - Supply Package Type
A4915 3 Phase 10 mA NMOS SMD/SMT 3 Output Yes Fan Controller 3V -20 °C ~ 105 °C(TA) 5.5V ~ 50V 28-pin TSSOP with an exposed thermal pad (suffix LP)
28-contact 5×5mm QFN with an exposed thermal pad (suffix ET)

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    Datasheet Download on Sep, 2022

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