TMC2211

TMC2211-EVKIT Rev 0

Document overview

• Manufacturer or author: Analog Devices, Inc.
• PDF pages: 26

Technical content

Configurable Integrated Stepper Driver 19-102100; Rev. 0; 01/26 © 202 6 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. General Description The TMC2211 is a high -performance stepper motor driver IC with configuration options through package pins and additional diagnostic outputs. It combines the industry’s most advanced stepper motor driver based on the 256 microsteps, built -in indexer and two fully integrated 65V, 3.0AMAX H -bridges, plus non - dissipative integrated current sensing (ICS). ADI-Trinamic's sophisticated StealthChop2 chopper ensures absolutely noiseless operation combined with maximum efficiency and best motor torque. High integration, high energy efficiency, and a small form factor enable miniaturized and scalable systems for costeffective solutions. The complete solution reduces the learning curve to a minimum while giving best -in- class performance. The H -bridge field-effect transistors (FETs) have very low impedance, resulting in high driving efficiency and minimal heat generated. The typical total RON (high side + low side) is 0.31Ω. The maximum RMS current per H-bridge is 2A with VS = 24V and 1.7A with VS = 48V supply at room temperature, assuming a four-layer PCB. Due to thermal restrictions, the applicable RMS current depends on environment temperature, duty cycle, and the thermal characteristics of the application (PCB ground planes, heatsink, ventilation). The maximum full -scale current per H -bridge is IFS = 3.0AMAX and can be set by an external resistor connected to I REF. This current is defined as the maximum current setting of the embedded current drive regulation circuit. The maximum output current per H -Bridge is limited by the overcurrent protection (OCP) to a value safely above the peak current setting. The non -dissipative ICS eliminates the bulky external power resistors, resulting in a dramatic space and power saving compared with mainstream applications based on external sense resistors, while providing the same overall accuracy. The TMC2211 features extensive diagnostics and protections such as short protection/OCP, thermal shutdown, and undervoltage lockout (UVLO). During thermal shutdown and UVLO events, the driver is disabled. The TMC2211 is available in a small TQFN38 5mm x 7mm package with exposed pad.

Applications

• Textile, Sewing Machines, Knitting Machines
• Lab and Factory Automation
• ID Printers/Card Printers
• Liquid Handling, Medical Applications
• Office Automation and Paper Handling
• POS, Massage Chairs
• ATM, Cash Recycler, Bill Validators, Cash Machines
• CCTV, Security
• Pumps and Valve Control
• Heliostat and Antenna Positioning
• Stage Lighting Benefits and Features
• Voltage Range: 4.5V to 65V DC
• Low RON (HS + LS): 0.31Ω Typical (TA = 25°C)
• Current Ratings per H-Bridge (Typical at 25°C): 2ARMS (2.8A Sine Peak) at VS = 24V 1.7ARMS (2.4A Sine Peak) at VS = 48V
• Fully Integrated Lossless Current Sensing
• Step/Direction (S/D) Interface with MicroPlyer Step Interpolation
• Highest Resolution: 256 Microsteps per Full Step
• StealthChop2 Silent Motor Operation
• SpreadCycle Highly Dynamic Motor Control Chopper
• Full Protection and Diagnostics
• Overvoltage Protection Output
• Compact 5mm x 7mm TQFN38 Package

65V 2ARMS Smart Pin-Configurable Integrated Stepper Driver TMC2211 www.analog.com Analog Devices | 2 TABLE OF CONTENTS Attention: First operation with StealthChop2 can only be enabled during standstill to allow for tuning of the

65V 2ARMS Smart Pin-Configurable Integrated Stepper Driver TMC2211 www.analog.com Analog Devices | 3

65V 2ARMS Smart Pin-Configurable Integrated Stepper Driver TMC2211 www.analog.com Analog Devices | 6

Package Information

Land Pattern Number 90-0076 Thermal Resistance, Single Layer Board: Junction to Ambient (θJA) 38°C/W Junction to Case (θJC) 1°C/W Thermal Resistance, Four Layer Board: Junction to Ambient (θJA) 28°C/W Junction to Case (θJC) 1°C/W For the latest package outline information and land patterns (footprints), go to https://www.analog.com/en/design- center/packaging-quality-symbols-footprints/package-index.html. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. layer board. For detailed information on package thermal considerations, refer to https://www.analog.com/en/technical- articles/thermal-characterization-of-ic-packages.html. Absolute Maximum Ratings Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational section s of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Electrical Characteristics

100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER SUPPLY Supply Voltage Range VS 4.5 65 V Sleep Mode Current Consumption IVS V(SLEEPN) = 0 4 25 μA Quiescent Current Consumption IVS V(SLEEPN) = 1, V(DRV_ENN) = 1 3.5 6 mA 1.8V Regulator Output Voltage VVDD VS = 4.5V 1.8 V

65V 2ARMS Smart Pin-Configurable Integrated Stepper Driver TMC2211 www.analog.com Analog Devices | 7 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS VDD Current Limit IV18LIM 20 mA Charge Pump Voltage VCP VS + 2.7 V Logic I/O Supply Voltage Range VCC_IO 2.2 5.5 V Sleep Mode Current Consumption IVCC_IO V(SLEEPN) = 0 5 10 μA Quiescent Current Consumption IVCC_IO V(SLEEPN) = 1 35 60 μA LOGIC LEVEL INPUTS-OUTPUTS Input Voltage Level - High VIH 0.7 × VCC_IO V Input Voltage Level - Low VIL 0.3 × VCC_IO V Input Hysteresis VHYS 0.15 × VCC_IO V Internal Pullup/Pulldown Resistance RPULL To GND or to VCC_IO 60 100 140 kΩ Input Leakage InLeak Inputs without pullup/pulldown resistance -1 +1 μA Output Logic-Low Voltage VOL ILOAD = 5mA 0.4 V Push-Pull Output LogicHigh Voltage VOH ILOAD = 5mA VCC_IO – 0.4V Open-Drain Output Logic High Leakage Current IOH V(PIN) = 5.5V -1 +1 μA SLEEPN Voltage Level High VIHSLEEPN 0.9 V SLEEPN Voltage Level Low VILSLEEPN 0.6 V SLEEPN Pulldown Input Resistance RPDSLEEPN 0.8 1.5 MΩ OUTPUT SPECIFICATIONS Output ON-Resistance Low Side RONLS CFG3/CFG2 = 10 0.15 0.3 Ω CFG3/CFG2 = 01 0.21 0.4 Output ON-Resistance Low Side RONLS CFG3/CFG2 = 00 0.37 0.75 Ω Output ON-Resistance High Side RONLS 0.16 0.3 Ω Output Leakage ILEAK -10 +10 μA Output Slew Rate SR 400 V/μs PROTECTION CIRCUITS Overcurrent Protection Threshold OCP CFG3/CFG2 = 10 5.0 A CFG3/CFG2 = 01 3.33 CFG3/CFG2 = 00 1.67 Overcurrent Protection Blanking Time TOCP 0.9 1.5 2.3 μs UVLO Threshold on VS UVLO VS falling 3.75 3.9 4.05 V

65V 2ARMS Smart Pin-Configurable Integrated Stepper Driver TMC2211 www.analog.com Analog Devices | 8 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are guaranteed by design and characterization.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS UVLO Threshold on VS Hysteris UVLOHYS 0.12 V UVLO Threshold on VCC_IO UVLO VCC_IO falling 0.9 1.5 1.95 VCC_IO UVLO Hysteresis UVLOVCCH 100 mV Thermal Protection Threshold Temperature TSD 165 °C Thermal Protection Temperature Hysteresis 20 °C CURRENT REGULATION IREF Pin Resistor Range RREF 12 60 kΩ IREF Output Voltage VREF 0.882 0.9 0.918 V Full-Scale Current Constant KIFS IFS = 1A 11.75 A × kΩ IFS = 2A 24 IFS = 3A 36 Regulation Accuracy DITRIP1 Output current from 7% to 100% FS, RREF = 12kΩ -7 +7 % Phase-to-Phase Current Regulation Mismatch IMATCH Output currents from 7% to 100% FS, RREF = 12kΩ One Sigma 0.7 % FUNCTIONAL TIMINGS SLEEP Time tSLEEP SLEEPN = 0 to OUT_ three state 50 μs Wake-Up Time from Sleep TWAKE SLEEPN = 1 to normal operation 2.5 ms Enable Time TEN Time from DRV_ENN pin falling edge to driver on 1.5 μs Disable Time TEN Time from DRV_ENN pin rising edge to driver off 6 μs CLOCK Internal Clock Frequency fCLK 11.9 12.5 13.2 MHz STEP/DIR TIMINGS Step Frequency fSTEP fCLK/8 Fullstep Frequency fFS fCLK/512 STEP High Time tSH tCLK + 20 ns STEP Low Time tSL tCLK + 20 ns DIR to STEP Setup Time tSU 20 ns DIR to STEP Hold Time TH 20 ns

65V 2ARMS Smart Pin-Configurable Integrated Stepper Driver TMC2211 www.analog.com Analog Devices | 9 Pin Descriptions PIN NAME FUNCTION REF SUPPLY Type 6 AGND Analog Ground. Connect to ground plane. GND 23, 28 PGND Power Ground. Connect to ground plane. GND 21, 25, 26, VS Motor Supply Voltage. Provide filtering capacity near pin with shortest loop to GND plane/exposed pad. Supply 5 VDD1V8 Output of Internal 1.8V Regulator. Attach 2.2µF or larger ceramic capacitor to AGND near to pin for best performance. Supply 18 VCP Charge Pump Voltage. Tie to VS using 1.0µF capacitor. Connect positive end of capacitor close to VS pin to avoid inductive peaks. Analog Output

7 VCC_IO Digital IO supply voltage provided from external source to define circuit IO

level. Required for proper voltage level settings on output pins. Supply

17 CPO Charge Pump Capacitor Output Analog

16 CPI Charge Pump Capacitor Input. Tie to CPO using a VS-rated 22nF capacitor. Analog Output

1 STEP Step input VCC_IO Digital

2 DIR Direction input VCC_IO Digital

34 CFG3 Configuration input, see Table 1 to Table 5 for details on the configuration

options VCC_IO Digital Input (Pullup)

35 CFG2 Configuration input, see Table 1 to Table 5 for details on the configuration

options VCC_IO Digital Input (Pullup)

36 CFG1 Configuration input, see Table 1 to Table 5 for details on the configuration

options VCC_IO Digital Input (Pullup)

37 CFG0 Configuration input, see Table 1 to Table 5 for details on the configuration

options VCC_IO Digital Output 3 IREF Analog Reference Current for Current Scaling. Provide external resistor to GND. VDD_18 Analog Input

12 CFG7 Configuration input, see Table 1 to Table 5 for details on the configuration

options VCC_IO Digital Input (Pulldown)

9 CFG4

Configuration input, see Table 1 to Table 5 for details on the configuration options VCC_IO Digital Input (Pullup)

10 CFG5 Configuration input, see Table 1 to Table 5 for details on the configuration

options VCC_IO Digital Input (Pullup)

8 CFG6 Configuration input, see Table 1 to Table 5 for details on the configuration

options VCC_IO Digital Input (Pullup) 11 DRV_ENN Enable Input. The power stage is switched off (all motor outputs floating) when this pin is driven to a high level. VCC_IO Digital Input (Pullup)

13 ERROR Error output VCC_IO

(open drain) 14 INDEX Open drain index pulse output indicating microstep 0 position of coil B. VCC_IO Digital Output

65V 2ARMS Smart Pin-Configurable Integrated Stepper Driver TMC2211 www.analog.com Analog Devices | 10 (open drain) 33 nSLEEP Low active power down input/reset input. Apply a continuous low level to bring the device to sleep mode. SLEEPN has an internal pulldown. If not used, connect to VS or VCC_IO (this is a high voltage pin). Once the IC returns from sleep mode/reset, it must be reconfigured before being used again. While reconfiguring the IC, it is advised to still hold the bridge drivers disabled with DRV_ENN. Do not use while at high motor velocity! VS Analog Input (Pulldown)

24 OUT2B Motor Coil B Output 2 VS Analog

22 OUT1B Motor Coil B Output 1 VS Analog

27 OUT2A Motor Coil A Output 2 VS Analog

29 OUT1A Motor Coil A Output 1 VS Analog

Exposed Die Pad. Connect the exposed die pad to a GND plane. Provide as many as possible vias for heat transfer to the GND plane. Serves as the GND pin for power stage and internal circuitry. GND 19, 20, 31, 32 N.C. No Internal Connection. Leave this pin open or tie it to GND for improved cooling. N.C. 15 OV Overvoltage Indicator Output (Open-Drain). Attach external MOSFET with load resistor to limit supply voltage >68.4V. External pullup resistor required. Updated by ADC with 𝑓𝐶𝐿𝐾 2048⁄ . VCC_IO Digital Output (Open- Drain) 4, 38 DNC Do not connect. This pin must remain unconnected. It may be used internally Pin Configurations TMC2211 TQFN Pin Configuration TMC2211 TOP VIEW OUT1A OUT2A VS PGND CPI OV INDEX ERROR CPO VCP VS VS NC EXPOSED PAD (EP) = GND NC NC CFG2 CFG3 nSLEEP NC 32 19 VDD18 CFG6 CFG5 5 6 7 CFG7 AGND VCCIO CFG4 8 9 10 11 12 DRV_ENN VS OUT2B PGND OUT1B 2425262728293031 20212223 TQFN38 (5mm x 7mm) DNC CFG0 CFG1 DIR DNC STEP 1 2 4 IREF

Figure 1. Simplified Diagram

efficiency, higher reliability, and quieter and smoother motion.

256 STEP

Figure 2. Block Diagram

65V 2ARMS Smart Pin-Configurable Integrated Stepper Driver TMC2211 www.analog.com Analog Devices | 13 Key Concepts The TMC2211 implements advanced features exclusive to ADI -Trinamic products. These features contribute toward greater precision, greater energy efficiency, higher reliability, smoother motion, and cooler operation in many stepper motor applications. StealthChop2 No-noise, high-precision chopper algorithm for inaudible motion and inaudible standstill of the motor. Allows faster motor acceleration and deceleration than StealthChop and extends StealthChop to low standstill motor currents. SpreadCycle High-precision cycle-by-cycle current control for highest dynamic movements. MicroPlyer Microstep interpolator to run at full 256 microstepping with low resolution step input. In addition to these performance enhancements, ADI-Trinamic motor drivers offer safeguards to detect and protect against shorted outputs, output open -circuit and undervoltage conditions for enhancing safety and recovery from equipment malfunctions. StealthChop2 and SpreadCycle Driver StealthChop2 is a voltage chopper -based principle. It guarantees the motor is absolutely quiet in standstill and in slow motion, except for the noise generated by ball bearings. Unlike other voltage mode choppers, StealthChop2 does not require any configuration. It automatically learns the best settings during the first motion after power-up and further optimizes the settings in subsequent motions. An initial homing sequence is sufficient for learning. StealthChop2 allows high motor dynamics by reacting at once to a change of motor velocity. For highest velocity applications, SpreadCycle is an alternative option to StealthChop2. StealthChop2 and SpreadCycle may even be used in a combined configuration for the best of both worlds: StealthChop2 for no -noise standstill, silent, and smooth performance, SpreadCycle at higher velocity for high dynamics and highest peak velocity at low vibration. SpreadCycle is an advanced cycle -by-cycle chopper mode. It offers smooth operation and good resonance dampening over a wide range of speed and load. The SpreadCycle chopper scheme automatically integrates and tunes fast decay cycles to guarantee smooth zero-crossing performance. Benefits

• Significantly improved microstepping with low-cost motors.
• Motor runs smooth and quiet.
• Absolutely no standby noise.
• Reduced mechanical resonance improves torque output. Step/Direction Interface The STEP and DIR inputs provide a simple, standard interface compatible with many existing motion controllers. The MicroPlyer step pulse interpolator brings the smooth motor operation of high -resolution microstepping to applications originally designed for coarser stepping. Timing Figure 3 shows the timing parameters for the STEP and DIR signals. STEP and DIR are sampled and synchronized to the system clock. An internal analog filter of approximately 10ns removes glitches on the signals, such as those caused by long PCB traces. If the signal source is far from the chip, and especially if the signals are carried on cables, the signals should be filtered or transmitted differentially. See the Electrical Characteristics table for the specified timing parameters.

Attention: MicroPlyer only works perfectly with a stable STEP frequency. Figure 5. MicroPlyer Microstep Interpolation with Rising STEP Frequency (Example: 16 to 256) The first STEP cycle is long enough to set the standstill bit stst in 0 This bit is cleared on the next STEP active edge. microsteps. So, there is a small jump in motor angle between the first and second cycles at the higher rate. Table 1. Microstep Resolution Configuration for the Step Input Table 2. Run Current (IRUN) Configuration

Table 3. Digital Current Scale Configuration Table 4. Chopper Mode Selection the integrated current scaling algorithm. Table 5. Hold Current (IHOLD) Reduction Configuration Table 6. StealthChop2 PWM Frequency applications are very suit able for indoor or home use. The motor operates absolutely free of vibration at low velocities. To match the motor current to a certain level, the effective PWM voltage is scaled depending on the actual motor velocity. StealthChop2 PWM frequency depends on the internal clock frequency. small jerk might be visible because of a phase shift between voltage and current. is no danger of triggering the short detection.

65V 2ARMS Smart Pin-Configurable Integrated Stepper Driver TMC2211 www.analog.com Analog Devices | 18 Although the current can be regulated using only on-phases (ON) and fast decay (FD) phase, insertion of the slow decay (SD) phase is important to reduce electrical losses and current ripple in the motor. The current comparator can measure coil current during phases when the current flows through exactly one low -side transistor, but not during the SD phase. So, the SD phase is terminated by a timer.The on -phase is terminated by the comparator when the current through the coil reaches the target current plus some hysteresis. The FD phase may be terminated by either the comparator or another timer. When the coil current is switched, spikes in the RDS(ON) -based current measurement occur due to charging and discharging parasitic capacitance. During this time, typically one or two microseconds, the current cannot be measured. Blanking is the time when the input to the comparator is masked to block these spikes. The high-performance chopper algorithm called SpreadCycle cycles through four phases: on, slow decay, fast decay, and a second slow decay. Integrated Current Sense Non-dissipative current sensing is integrated in the TMC2211 (ICS). This feature eliminates the bulky external power resistors, which are normally required with external current sensing. The ICS results in a dramatic space and power saving compared with mainstream applications based on the external sense resistor. For optimum performance, the ICS individually measures R DS(ON) for each of the power MOSFETs, considering individual MOSFET temperature to yield the best results. Setting the Full-Scale Current Range The full -scale current IFS is a peak current setting. It is selected with an external reference resistor and the two configuration pins CFG2 and CFG3 (see also Table 2 in the Pin Configuration Options section). Three different full-scale current ranges can be configured through the pins with the same reference resistor to adapt to different motor sizes and applications. This is needed to benefit from the best possible current control resolution. Connect a reference resistor RREF from IREF to GND. Together with pins CFG3 and CFG2, the full-scale current range IFS is set based on the external resistor . The following equation shows the full-scale current IFS as a function of the RREF shunt resistor connected to pin IREF and the configuration pin setting. The proportionality constant K IFS is defined by the CFG2 and CFG3 setting. The external resistor RREF can range between 12kΩ and 60kΩ. 𝐼𝐹𝑆 (𝑅𝑀𝑆) = 𝐾𝐼𝐹𝑆(𝐶𝐹𝐺2, 𝐶𝐹𝐺3) 𝑅𝑅𝐸𝐹[𝑘𝛺] × 𝐶𝑠 × 248 256 /√2 While motor running: 𝐶𝑠 = 𝐶𝐹𝐺4 × 25 + 75 100 While motor standstill: 𝐶𝑠 = 𝐶𝐹𝐺4 × 25 + 75 100 2(2∗𝐶𝐹𝐺7 + 𝐶𝐹𝐺6) This equation gives the RMS motor current per coil.

• CS is IRUN or IHOLD, respectively.
• 248/256 is the amplitude of the default microstep table.
• 1/SQRT(2) is the factor to calculate the RMS value for a sine wave shape.

Table 8. IFS Full-Scale Peak Range Settings (Example for RREF = 12kΩ) 1/1 36 3A 0.31Ω Optimized efficiency and extended operating range up to 3A (FS). 1/0 36 3A 0.31Ω Optimized efficiency and extended operating range up to 3A (FS). 0/1 24 2A 0.37Ω Reduced operating range up to 2AFS. When high accuracy at lower current is required. 0/0 (default) 11.75 1A 0.53Ω Reduced operating range up to 1AFS. When high accuracy at low current is required. scale current. The resulting maximum RMS current is given in each cell. Table 9. IFS Full-Scale RMS Current in Ampere (ARMS) Based on CFG3/CFG2 Pin Operation with an external motion controller often requires quick reaction to certain states of the stepper motor driver.

65V 2ARMS Smart Pin-Configurable Integrated Stepper Driver TMC2211 www.analog.com Analog Devices | 21 Reset, Disable/Stop, and Power Down External Reset and Sleep Mode The reset and sleep mode are controlled with the SLEEPN pin. A short pulse on SLEEPN with a duration >30µs results in a chip reset. Very short pulses of <30µs are filtered out and do not have an effect on the operation. If SLEEPN is kept at GND, the IC goes into low power standby state (sleep mode). All internal supplies and bridge drivers are switched off. After power -up or leaving sleep mode and reset condition, the configuration pins are read and internal registers set accordingly. Set DRV_ENN low to complete the power up cycle reset. The wake-up time is given in the EC table. If not used, connect to V S or VCC_IO (this is a high voltage pin). Driving the DRV_ENN pin high, the bridge drivers can be disabled and the motor is freewheeling. Be careful using these pins during high motor velocity as energy fed back from the motor might damage the chip! Protections and Driver Diagnostics Overcurrent Protection Overcurrent protection (OCP) protects the device against short circuits to the rails (supply voltage and ground) and between the outputs (OUT1A, OUT2A, OUT1B, OUT, and 2B). The OCP threshold depends on the selected full -scale current range or see the Electrical Characteristics table for the respective threshold values. The full-scale range is selected with CFG3/CFG2 pins (see Table 9) If the output current is greater than the OCP threshold for longer than the deglitch time (blanking time), then an OCP event is detected. When an OCP event is detected, the H-bridge is immediately disabled. The short protection tries thrice before a fault on the ERROR pin is set and the bridge is continuously disabled. The device is still alive and allows for configuration using pins. To re-enable the power bridge, the DRV_ENN pin must be cycled. Thermal Protection and Shutdown The TMC2211 has an internal thermal protection. If the die temperature exceeds 165°C (typical value), a fault indication as a fault flag is raised and the driver is three - stated until the junction temperature drops below approximately 145°C (typical value). After that, the driver is re-enabled. Heat is mainly generated by the motor driver stages, and at increased voltage, by the internal voltage regulator. Most critical situations, where the driver MOSFETs can be overheated, are avoided when enabling the short-to-GND protection. For many applicat ions, the overtemperature prewarning indicates an abnormal operation situation and can be used to initiate user warning or power reduction measures like motor current reduction. The thermal shutdown is just an emergency measure and temperature rising to the shutdown level should be prevented by design. Overvoltage Protection and OV Pin A stepper motor application can generate significant overvoltage, especially when the motor is quickly decelerated from a high velocity, or when the motor stalls. This voltage is fed back to the supply rails by the driver output stage. For typical NEMA17 or larger motors, and also for smaller motors with sufficient flywheel mass, the energy fed back can be substantial, so that the power capacitors and circuit consumption are not sufficient to keep the supply within its limits. To protect the driver as well as connected circuitry, the TMC2211 has an overvoltage detection and protection mechanism. The OV output allows attaching an NPN or MOSFET with a power resistor (brake resistor) to dump the excess energy into the resistor.

The supply voltage is permanently monitored with the internal ADC. The upper level for the supply voltage is set to 68.4V. The OV output pin shows the actual state of the overvoltage monitor. As soon as and as long as VS > 68.4 V, the OV output pin changes to three-state/'Z'. The OV output pin is an open-drain pin. Figure 10 shows an example of a brake chopper circuit. Take special care if the device is put into sleep mode (SLEEPN = LOW). In this case, OV is floating. Figure 10. Brake Chopper Circuit Example Table 10. Overcurrent Protection Thresholds Based on the Full-Scale Current The TMC2211 features an UVLO protection for VS, VCC_IO, and the charge pump. The UVLO condition on VS is triggered below 4.05V (max). The UVLO condition on VCC_IO is triggered below 1.95V (max).

The chip has internal ESD protection on every pin. at least 1µF on the positive voltage supply (VS pins). This is not protection against the hot plugging of a motor. connections. Connect the VDD1V8 filtering capacitor directly to the VDD1V8 pin. Figure 11. Standard Application Circuit information for the layout example.

depending on their energy. Especially, plastic housings and belt drive systems tend to cause ESD events of several kV. application PCB circuitry, and thus, reduce electromagnetic emission. Figure 12. Simple ESD Enhancement device (SMD) inductivities conduct full motor coil current and must be selected accordingly.

65V 2ARMS Smart Pin-Configurable Integrated Stepper Driver TMC2211 www.analog.com Analog Devices | 25 OUT1A OUT2A 2-PHASE STEPPER MOTORFULL BRIDGE A DRIVER AT 100MHz AT 100MHz V1A 470pF OUT1B OUT2B FULL BRIDGE B AT 100MHz AT 100MHz V2A 470pF 470pF 470pF V2B V1B TMC2211 Figure 13. Extended Motor Output Protection

Ordering Information

PART NUMBER TEMPERATURE RANGE PIN-PACKAGE TMC2211ATU+ -40°C to +125°C 38 TQFN - 5mm x 7mm TMC2211ATU+T -40°C to +125°C 38 TQFN - 5mm x 7mm + Denotes a lead(Pb)-free/RoHS-compliant package. T Denotes tape-and-reel.

65V 2ARMS Smart Pin-Configurable Integrated Stepper Driver TMC2211

Revision History

0 01/26 Initial release — Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. All Analog Devices products contained herein are subject to release and availability. w w w . a n a l o g . c o m Analog Devices | 26