Power Delivery 3.0 compliant DC Fan

The proliferation of various power adapters can lead to inefficiencies and complexities in power source management. USB-C Power Delivery (USB-C PD) has the potential to simplify the power adapter landscape for electronic products greatly. Leveraging the extensive peripheral capabilities of the NuMicro M2L31 microcontroller, our reference design has a comprehensive feature set that includes USB Power Delivery (PD) 3.0 support, motor drive capabilities, and a user-friendly interface. Users can use PD adapters to power the board and drive the motor. Furthermore, users can intentionally control the fan with the touch key interface.

Features

-	Integrates the circuit applications required for USB-C PD 3.0 , rich analog features, and touch key, which can save BOM cost and simplify PCB layout
-	Integrates the PD 3.0 protocol and touch key, providing a simple function library
-	Adds related programs according to different motor controls to complete your motor control system
-	Flexible Input voltage to application
	- Evaluation board power can be provided using a commercially available PD adapter
	- For motors with different driving voltages, simply use software to request PD adapter to change voltage

Specifications

M2L31 (32-bit Arm® Cortex®-M23)
-	Compliant with Type-C (Rev. 2.1) and power delivery (Rev. 3.0) specification
-	Up to 24 sets of 12-bit ADC with 16-ch PDMA
-	Up to 3 channels of ACMP
-	Up to 2 channels of 12-bit DAC
-	Up to 24 channels of PWM
-	Supports eCAP for hall sensor and QEI for encoder interface to detect the motor spinning position
-	Up to 16 channels of high touch sensitivity and high-noise immunity touch keys

System Block Diagram

Power Delivery 3.0 compliant DC Fan

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Power Delivery 3.0 compliant DC Fan

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