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RuiMon Technology expands its ultra-quiet 2-phase stepper motor driver family with the?MS35779?– a highly integrated STEP/DIR interface driver with built-in power MOSFETs delivering up to?2A continuous current, engineered for demanding high-performance motion control applications.

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Key Innovations

01 Enhanced Performance

??0.6A–0.8A higher drive current?vs. MS35774/6, supporting larger motors

??New stall detection?for improved system safety and reliability

? Maintains family’s?ultra-low-noise signature?with superior motion quality

02 Intelligent Drive Control

??Dual operating modes:

  • Fast Mode: Optimized dynamic response for high-speed applications

  • Silent Mode: Minimizes acoustic noise while boosting efficiency

    ??High-resolution microstepping:

  • Direct STEP/DIR support for?8/16/32/64 microsteps

  • UART-configurable parameters?(microsteps, current, etc.) eliminates manual potentiometer tuning, streamlining mass production and firmware updates

03 Comprehensive Protection

Integrated?stall detection, undervoltage lockout (UVLO), overcurrent protection (including ground/supply shorts), and thermal shutdown ensure robust operation.

Typical Application Diagram

Technical Comparison

Parameter MS35774 MS35776/MS35777 MS35778/MS35779
Operating Voltage 4.7-36V 4.7-36V 4.7-29V
On-Resistance (RDS(ON)) 0.23Ω+0.23Ω 0.23Ω+0.23Ω 0.11Ω+0.11Ω
Phase Current 2A 2A 2.8A
S/D Interface Supported Supported Supported
Communication UART UART UART

Microstepping

(IO Control)

 Half,4,8,16 Half,4,8,16 8,16,32,64

Microstepping

(Internal Software)

 256 256 256
Chopper Mode / / Silent/Fast
Sleep Mode Supported
Supported
Supported
Auto Current Reduction Supported Supported Supported

*(Note: Refer to datasheet for final specifications. Package variants: MS35776-QFN28; MS35777-eHTSSOP28; MS35778-eTSSOP28; MS35779-QFN28)*

Application Scenarios

The MS35779 integrates?PWM control, current sensing, and protection circuits?with advanced technologies like?microstepping, dynamic current control, silent chopping, and stall detection?to deliver?high-precision, ultra-quiet, and reliable?motor performance.

Revolutionizing 3D Printing

Solves key pain points –?noise, low accuracy, and step loss?– in desktop FDM and industrial 3D printers, elevating print quality and user experience.

Precision Industrial & Medical

Digital control and hardware integration?reduce PCB complexity and BOM cost, ideal for automation equipment, PTZ cameras, gimbals, and medical devices requiring uncompromising motion control.