Automotive 3-Phase MOSFET Driver A4910A
Brand: Allegro MicroSystems · SKU: A4910A · MPN: A4910 · Category: Components
The A4910 is a three-phase controller designed for use with N-channel external power MOSFETs, specifically for automotive applications. It features a unique charge-pump regulator that provides full (>10 V) gate drive for battery voltages down to 7 V, and allows operation with a reduced gate drive down to 5.5 V. A bootstrap capacitor is used to supply the necessary voltage for the N-channel MOSFETs. An internal charge pump for the high-side drive supports DC (100% duty cycle) operation. It offers full control over all six power MOSFETs in the 3-phase bridge, enabling motor driving with block commutation or sinusoidal excitation. Protection against shoot-through is provided by integrated crossover control and programmable dead time. Key features include 3-phase current sense amplifiers, SPI-compatible serial or direct parallel control, and extensive diagnostics output. The supply voltage range is 5.5 V to 50 V, with CMOS inputs supporting a 3.3 V to 5 V logic supply.
Specifications
| Type | 3-Phase MOSFET Gate Driver |
|---|---|
| Gate Drive | Full (>10 V) down to 7 V battery, reduced down to 5.5 V battery |
| Application | Automotive |
| Current Sensing | 3-phase current sense amplifiers |
| Control Interface | SPI-compatible serial or direct parallel |
| Duty Cycle Support | DC (100% PWM) capable |
| Protection Features | Cross-conduction protection, Programmable dead time |
| Logic Supply Voltage (VDD) | 3.3 V to 5.5 V |
| Supply Voltage Range (VBB) | 5.5 V to 50 V |
| Operating Temperature Range | -40 °C to 150 °C |
| Package (Example: A4910KJPTR-T) | 48-Pin LQFP with exposed thermal pad |
| Warranty | Standard Manufacturer Warranty |
| Weight | N/A |
| Dimensions | N/A |
Key Features
The A4910 is an automotive-grade, high-current 3-phase gate driver for N-channel MOSFETs. It provides flexible control (block commutation or sinusoidal excitation) and integrated protection features essential for robust motor control systems like electronic power steering (EPS) and hydraulic pumps.
Frequently Asked Questions
Is this product genuine OEM?
Yes, this Automotive 3-Phase MOSFET Driver A4910A (A4910A) is 100% genuine Allegro MicroSystems hardware. All our products are verified by certified technicians and come with clean serial numbers ready for service contract registration.
What warranty is included?
This Automotive 3-Phase MOSFET Driver A4910A includes our standard 3-Year Warranty covering all manufacturing defects. We also offer advanced replacement options for minimal downtime.
How long does shipping take?
We offer free ground shipping which typically takes 3-5 business days. Expedited shipping options are available at checkout for faster delivery.
Can I return this product?
Yes, we have a 30-day return policy on all products. Restocking fees may apply for opened items. Please see our return policy for complete details.
Is the Automotive 3-Phase MOSFET Driver A4910A compatible with my system?
Please check the specifications tab for detailed compatibility information. Our technical team is available to assist with compatibility questions for the A4910A.
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