fish001

Brushless sensorless motor driver based on DRV11873 - suitable for repairing DDC water-cooled water pumps

Overview

Plan confirmed

After disassembling the DDC, you can find that it is actually a brushless and induction motor with 6 coils to control the rotation of the rotor.

After determining the motor form, it was decided to use TI's DRV11873 as the driver chip.

Because only a few peripheral components are needed to achieve the required functions

Several pins also lead to pads and jumpers for testing

The basic circuits are based on official documents for 2-layer boards and 4-layer boards (the drawings are terrible)

Determine winding direction

After continuous measurements, the following wiring method was finally determined:

verify

Not verified yet (lazy)

Design Files

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Update:2025-06-19 12:38:57

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