Power Delivery 3.0 compliant DC Fan

The current electronic product adapters have various connectors and different voltages, and USB-C PD can perfectly solve this problem. Based on the robust peripheral set of M2L31, the reference design combines USB PD 3.0 and motor control, and users can directly use commercially available PD adapters to power the application board and drive the motor. Furthermore, precise control of motor start and stop and speed can be realized with the touch daughter application board.

Features

-	Integrates the circuit applications required for USB PD 3.0(CC1/CC2/ADC), motor control (OPA/ADC/ACMP/PWM), and touch key control, which can save BOM cost and simplify PCB layout
-	The firmware integrates the PD 3.0 protocol and touch key and provides a simple function library, add related programs according to different motor controls to complete your motor control system
-	Flexible to Development
	- Application board power can be provided using a commercially available PD adapter
	- For motors with different driving voltages, only need to fine-tune the circuit to complete the replacement design

Specifications

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

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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