342968 2968 - MP6500 Stepper Motor Driver Carrier, Digital Current Control

2968 - MP6500 Stepper Motor Driver Carrier, Digital Current Control

This breakout board for the MPS MP6500 microstepping bipolar stepper motor driver is Pololu’s latest stepper motor driver. The module has a pinout and interface that are very similar to that of our popular A4988 carriers, so it can be used as a drop-in replacement for those boards in many applications.
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This breakout board for the MPS MP6500 microstepping bipolar stepper motor driver is Pololu’s latest stepper motor driver. The module has a pinout and interface that are very similar to that of our popular A4988 carriers, so it can be used as a drop-in replacement for those boards in many applications. The MP6500 offers up to 1/8-step microstepping, operates from 4.5 V to 35 V, and can deliver up to approximately 1.8 A per phase continuously without a heat sink or forced air flow. This version of the board allows for dynamic current limit control through a pair of digital inputs, and the board ships with 0.1″ male header pins included but not soldered in.

This product is a carrier board or breakout board for the MP6500 stepper motor driver from Monolithic Power Systems (MPS); we therefore recommend careful reading of the MP6500 datasheet(1MB pdf) before using this product. This stepper motor driver lets you control one bipolar stepper motor at up to approximately 1.8 A per phase continuously without a heat sink or forced air flow (see the Power dissipation considerationssection below for more information). Here are some of the driver’s key features:

  • Simple step and direction control interface
  • Four different step resolutions: full-step, half-step, 1/4-step, and 1/8-step
  • Adjustable current control lets you set the maximum current output, which lets you use voltages above your stepper motor’s rated voltage to achieve higher step rates
  • Two current limit control options available:
    • Potentiometer Current Control — this carrier version uses an on-board trimmer potentiometer to set the current limit up to 2.5 A
    • Digital Current Control — this carrier version allows a microcontroller to dynamically adjust the current limit up to around 2 A
  • Internal current sensing allows the driver to automatically adjust the decay mode as necessary to provide the smoothest current waveform
  • 4.5 V to 35 V supply voltage range
  • Can deliver 1.8 A per phase continuously without additional cooling
  • Built-in regulator (no external logic voltage supply needed)
  • Can interface directly with 3.3 V and 5 V systems
  • Over-temperature thermal shutdown, over-current shutdown, short circuit protection, and under-voltage lockout
  • 4-layer, 2 oz copper PCB for improved heat dissipation
  • Exposed solderable ground pad below the driver IC on the bottom of the PCB
  • Module size, pinout, and interface match those of our A4988 stepper motor driver carriers in most respects

This product ships with all surface-mount components—including the MP6500 driver IC—installed as shown in the product picture.

Dimensions

Size: 0.6″ × 0.8″
Weight: 1.4 g1

General specifications

Minimum operating voltage: 4.5 V
Maximum operating voltage: 35 V
Continuous current per phase: 1.8 A2
Maximum current per phase: 2 A3
Minimum logic voltage: 2.1 V4
Maximum logic voltage: 6 V5
Microstep resolutions: full, 1/2, 1/4, and 1/8
Current limit control: digital
Reverse voltage protection?: N
Header pins soldered: N

Identifying markings

PCB dev codes: md33a, md33b
Other PCB markings: 0J10855, 0J11019

Notes:

1 Without included optional headers.
2 Without a heat sink or forced air flow.
3 With sufficient additional cooling. This limitation comes from maximum achievable current limit setting on this version of the board.
4 This is the input logic high threshold.
5 Absolute maximum voltage on any input is 6.5 V.

File downloads

MPS MP6500 stepper motor driver datasheet (1MB pdf)
MPS Application Note AN120: Undestanding MP6500 Current Control (1MB pdf)
Schematic diagram of the MP6500 Stepper Motor Driver Carrier (93k pdf)
Dimension diagram of the MP6500 Stepper Motor Driver Carrier (216k pdf)

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Specifications

Part. No. : 2968

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