BIG TREE TECH TMC2225-V1.0 User manual

Shenzhen BIGTREE technology co., LTD.
BIG TREE TECH
BIGTREETECH
TMC2225-V1.0
Stepper motor driver module

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BIG TREE TECH
I.Size information

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Parameter description
2-phase stepper motors up to 2A coil current (peak)
STEP/DIR Interface with 4, 8, 16 or 32 microstep pin setting
Smooth Running 256 microsteps by MicroPlyer interpolation
StealthChop2 silent motor operation
SpreadCycle highly dynamic motor control chopper
Low RDSon LS 280mΩ & HS 290mΩ (typ. at 25°C)
Voltage Range 4.75… 36V DC
Automatic Standby current reduction (option)
Internal Sense Resistor option (no sense resistors required)
Passive Braking and Freewheeling
Single Wire UART & OTP for advanced configuration options
Integrated Pulse Generator for standalone motion
Full Protection & Diagnostics
HTSSOP package for best thermal resistance
II. Working mode and Potentiometer
1. STEP/DIR mode：

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Working mode choice：MS1、MS2：
Spread：The default spread setting is stealthChop mode, and users can change it as
they like。

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2.UART mode：
Benefits of UART mode:
Motor current can be set arbitrarily through the firmware;
Microsteps can be set arbitrarily through firmware (up to 256 actual microsteps);
Actual and interpolated microsteps can be combined to achieve maximum torque;
The firmware can dynamically switch the stealthChop2 and spreadCycle modes
through UART.
When the motor is not moving, the motor standby current can be reduced
dynamically (through UART).
Wiring diagram is as follows:
3.Potentiometer settings：

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Clockwise Rotating Potentiometer - Reduce Vref, thereby reducing drive current;
Counterclockwise rotating potentiometer - Increase Vref, thereby increasing the
driving current.
The accurate voltage of Vref can only be measured when the main board is
supplied with 12V or 24V voltage.
Rotating potentiometer must not use too much force to prevent irreversible
damage to the potentiometer; when the counter-clockwise rotation reaches the
maximum, if it continues to rotate, it will become the minimum; similarly, when the
clockwise rotation reaches the minimum, if it continues to rotate, it will become the
maximum.
III. Firmware change instructions:
Firmware(Marlin-BUGFIX-2.0):
Firmware with TMC2208 settings
The TMC2225 UART mode can be used by directly replacing
TMC2225 on the motherboard using TMC2208 UART mode.
Configuration.h:

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Configuration_adv.h:
Default settings: 16 microsteps, 800mA current
*Use Trinamic Stealthchop mode.
*When disabled, Marlin uses spreadCycle step mode。
IV. Notes
1. When hardware chooses UART working mode, cautiously use soldering
iron to prevent scalding hands. After treatment, carefully observe
whether there is residual tin slag in the module. It must be cleaned up
to prevent short circuit burning of the module.
2. Pay attention to the line sequence and IO port when wiring. If the
wrong line is connected, the drive will not work.
3. When inserting drive into the main board, pay attention to see the
direction of drive, can not insert backward, to prevent drive from
burning.
4.Make sure to take action in heat dissipation (heat sink and heat
dissipation fan) before the driver works.

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BIG TREE TECH
If you encounter problems in use, welcome to contact us, we will be
answer to you ASAP. If you have any good comments or suggestions
on our products, please tell us, we will carefully consider your
comments or Suggestions. Thank you for choosing BIGTREETECH
products, thank you!