MCP8021-3315H/9PXVAO

Overview

The MCP8021-3315H/9PXVAO is a three-phase brushless DC (BLDC) motor gate driver with an integrated power module. It operates within a supply voltage range of 4.5V to 28V and supports PWM control frequencies up to 300kHz. The device features an integrated low-dropout regulator (LDO) providing 0.5A output current for auxiliary circuits. It includes three half-bridge drivers capable of driving external N-channel MOSFETs, with a maximum peak drive current of 2A per channel. The component is qualified to AEC-Q100 standards and operates over an extended temperature range from -40°C to +150°C.

Feature Summary

• Integrated three-phase BLDC motor gate driver with built-in power stage capabilities
• Includes an internal LDO regulator for stable auxiliary power supply generation
• Supports high-frequency PWM input signals for precise motor speed and torque control
• Designed with robust protection mechanisms including under-voltage lockout and thermal shutdown

Applications

• Automotive cooling fan systems
• Electric power steering actuators
• HVAC blower motors in vehicles
• Pump control modules requiring AEC-Q100 compliance

Procurement Notes

Verify the specific suffix 'H/9PXVAO' against the official Microchip datasheet to ensure correct package type and tape-and-reel configuration. Confirm that the AEC-Q100 qualification status matches your automotive application requirements. Check for any recent Product Change Notifications (PCN) or errata documents related to this part number before finalizing procurement orders.

Selection Notes

Select this component when a single-chip solution for three-phase BLDC control is required in space-constrained automotive designs. Ensure the system voltage does not exceed the 28V absolute maximum rating. Consider the integrated LDO capability if separate regulation for logic or sensor interfaces is needed. Verify compatibility with the intended microcontroller's PWM output levels and timing requirements.

Part Context

This part belongs to the MCP8021 family of three-phase motor drivers from Microchip Technology. It is designed specifically for automotive applications requiring high reliability and integration. The device combines gate driving, power switching, and regulation functions into a single VQFN package, reducing bill-of-materials count compared to discrete solutions.

Replacement Considerations

Check Microchip's official replacement matrix for direct pin-to-pin compatible alternatives. Verify that any substitute maintains the same AEC-Q100 grade and operating temperature range. Ensure electrical parameters such as drive current and supply voltage limits are equivalent or superior.