TMC2209

Part: TMC2209 from TRINAMICs

Type: Stepper Motor Driver IC for Two-Phase Bipolar Stepper Motors

Key Specs:

• Coil current: up to 2.8A peak, 2A RMS
• Voltage Range: 4.75V to 29V DC
• RDSon: LS 170mΩ & HS 170mΩ (typ. at 25°C)
• Microsteps: 256 microsteps by MicroPlyer™ interpolation
• Energy savings: up to 75% (CoolStep™)

Features:

• 2-phase stepper motors up to 2.8A coil current (peak), 2A RMS
• STEP/DIR Interface with 8, 16, 32 or 64 microstep pin setting
• Smooth Running 256 microsteps by MicroPlyer™ interpolation
• StealthChop2™ silent motor operation
• SpreadCycle™ highly dynamic motor control chopper
• StallGuard4™ load and stall detection for StealthChop
• CoolStep™ current control for energy savings up to 75%
• Low RDSon, Low Heat-Up LS 170mΩ & HS 170mΩ (typ. at 25°C)
• Voltage Range 4.75… 29V DC
• Low Power Standby
• Internal Sense Resistor option
• Passive Braking, Freewheeling, and automatic power down
• Single Wire UART & OTP for advanced configuration options
• Integrated Pulse Generator for standalone motion
• Compact QFN package with large heat slug
• Full Protection & Diagnostics

Applications:

• 3D Printers
• Printers, POS
• Office and home automation
• Textile, Sewing Machines
• CCTV, Security
• ATM, Cash recycler
• HVAC
• Battery Operated Equipment

Package:

• QFN28: 5 x 5 mm²

2-phase stepper motors up to 2.8A coil current (peak), 2A RMS STEP/DIR Interface with 8, 16, 32 or 64 microstep pin setting Smooth Running 256 microsteps by MicroPlyer™ interpolation StealthChop2™ silent motor operation SpreadCycle™ highly dynamic motor control chopper StallGuard4™ load and stall detection for StealthChop CoolStep™ current control for energy savings up to 75% Low RDSon, Low Heat-Up LS 170mΩ & HS 170mΩ (typ. at 25°C) Voltage Range 4.75… 29V DC Low Power Standby to fit standby energy regulations Internal Sense Resistor option (no sense resistors required) Passive Braking, Freewheeling, and automatic power down Single Wire UART & OTP for advanced configuration options

Integrated Pulse Generator for standalone motion

Compact QFN package with large heat slug

Compatible Design Upgrade 3D Printers Printers, POS Office and home automation Textile, Sewing Machines CCTV, Security ATM, Cash recycler HVAC Battery Operated Equipment

The maximum ratings may not be exceeded under any circumstances. Operating the circuit at or near more than one maximum rating at a time for extended periods shall be avoided by application design.

^*) Stray inductivity of GND and VS connections will lead to ringing of the supply voltage when driving an inductive load. This ringing results from the fast switching slopes of the driver outputs in combination with reverse recovery of the body diodes of the output driver MOSFETs. Even small trace inductivities as well as stray inductivity of sense resistors can easily generate a few volts of ringing leading to temporary voltage overshoot. This should be considered when working near the maximum voltage.

An effect which might be perceived at medium motor velocities and motor sine wave peak currents above roughly 2A peak is a slight sine distortion of the current wave when using SpreadCycle. It results from an increasing negative impact of parasitic internal diode conduction, which in turn negatively influences the duration of the fast decay cycle of the SpreadCycle chopper. This is, because the current measurement does not see the full coil current during this phase of the sine wave, because an increasing part of the current flows directly from the power MOSFETs' drain to GND and does not flow through the sense resistor. This effect with most motors does not negatively influence the smoothness of operation, as it does not impact the critical current zero transition. The effect does not occur with StealthChop.