Datasheet TMC2226 (TRINAMIC) - 4
| Manufacturer | TRINAMIC |
| Description | Step/Dir Drivers for Two-Phase Bipolar Stepper Motors up to 2.8A peak – StealthChop for Quiet Movement – UART Interface Option – Sensorless Stall Detection StallGuard4 |
| Pages / Page | 83 / 4 — 1 Principles of Operation. +VM. Figure 1.1 TMC2226 basic application … |
| File Format / Size | PDF / 1.9 Mb |
| Document Language | English |
1 Principles of Operation. +VM. Figure 1.1 TMC2226 basic application block diagram. THREE MODES OF OPERATION:
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Text Version of Document
TMC2226 DATASHEET (Rev. 1.06 / 2020-MAY-18) 4
1 Principles of Operation
The TMC22xx family of stepper drivers is intended as a drop-in upgrade for existing low-cost stepper driver applications. Their silent drive technology StealthChop enables non-bugging motion control for home and office applications. A highly efficient power stage enables high current from a tiny package. The TMC2226 requires just a few control pins on its tiny package. It allows selection of the most important setting: the desired microstep resolution. A choice of 8, 16, 32 or 64 microsteps, or from fullstep up to 1/256 step adapts the driver to the capabilities of the motion controller. Even at low microstepping rate, the TMC2226 offers a number of unique enhancements over comparable products: TRINAMICs sophisticated StealthChop2 chopper plus the microstep enhancement MicroPlyer ensure noiseless operation, maximum efficiency and best motor torque. Its fast current regulation and optional combination with SpreadCycle allow for highly dynamic motion. Protection and diagnostic features support robust and reliable operation. A simple-to-use 8 bit UART interface opens up more tuning and control options. Application specific tuning can be stored to on-chip OTP memory. Industries’ most advanced step & direction stepper motor driver family upgrades designs to noiseless and most precise operation for cost-effective and highly competitive solutions. t e n v e a rr e u lr Place near IC with c short path to die pad g o o g l n a il n a e An cs po 2.2µ T 22n 100n 6.3V F 50V 16V OU E O I R P P P 5V V C C CV
+VM
VS TMC2226 STEP 100n 100n 100µF Step and Direction 5V Voltage Analog Scaling Step&Dir input charge pump DIR motion control regulator VREF IREF Low ESR type Step Pulse OA1 Stand Still Generator Current Full Bridge A N stepper Configuration OA2 S Reduction motor Memory (OTP) MS1 Configuration MS2 BRA RSA stealthChop2 Configuration (GND or VCC_IO) r SPREAD Interface eylP Integrated IREF 256 Microstep o PDN/UART B. Dwersteg, © r Driver Connect directly c optional UART interface i Sequencer Rsense to GND plane TRINAMIC 2016 m UART interface Use low inductivity SMD spreadCycle type, e.g. 1206, 0.5W for + Register Block RSA and RSB DIAG Driver error Programmable OB1 Diagnostic INDEX coolStep Index pulse Outputs Full Bridge B OB2 stallGuard4 opt. ext. clock CLK_IN Trimmed CLK oscillator/ 10-16MHz BRB RSB selector 3.3V or 5V VCC_IO Connect directly I/O voltage to GND plane 100n Y N D B N D E AD N G T P S EID opt. low power standby opt. driver enable
Figure 1.1 TMC2226 basic application block diagram THREE MODES OF OPERATION: OPTION 1: Standalone STEP/DIR Driver (Legacy Mode)
A CPU (µC) generates step & direction signals synchronized to additional motors and other components within the system. The TMC2226 operates the motor as commanded by the configuration pins and STEP/DIR signals. Motor run-current either is fixed, or set by the CPU using the analog input VREF. The pin PDN_UART selects automatic standstill current reduction. Feedback from the driver to the CPU is granted by the INDEX and DIAG output signals. Enable or disable the motor using the ENN pin. www.trinamic.com
1 Principles of Operation
The TMC22xx family of stepper drivers is intended as a drop-in upgrade for existing low-cost stepper driver applications. Their silent drive technology StealthChop enables non-bugging motion control for home and office applications. A highly efficient power stage enables high current from a tiny package. The TMC2226 requires just a few control pins on its tiny package. It allows selection of the most important setting: the desired microstep resolution. A choice of 8, 16, 32 or 64 microsteps, or from fullstep up to 1/256 step adapts the driver to the capabilities of the motion controller. Even at low microstepping rate, the TMC2226 offers a number of unique enhancements over comparable products: TRINAMICs sophisticated StealthChop2 chopper plus the microstep enhancement MicroPlyer ensure noiseless operation, maximum efficiency and best motor torque. Its fast current regulation and optional combination with SpreadCycle allow for highly dynamic motion. Protection and diagnostic features support robust and reliable operation. A simple-to-use 8 bit UART interface opens up more tuning and control options. Application specific tuning can be stored to on-chip OTP memory. Industries’ most advanced step & direction stepper motor driver family upgrades designs to noiseless and most precise operation for cost-effective and highly competitive solutions. t e n v e a rr e u lr Place near IC with c short path to die pad g o o g l n a il n a e An cs po 2.2µ T 22n 100n 6.3V F 50V 16V OU E O I R P P P 5V V C C CV
+VM
VS TMC2226 STEP 100n 100n 100µF Step and Direction 5V Voltage Analog Scaling Step&Dir input charge pump DIR motion control regulator VREF IREF Low ESR type Step Pulse OA1 Stand Still Generator Current Full Bridge A N stepper Configuration OA2 S Reduction motor Memory (OTP) MS1 Configuration MS2 BRA RSA stealthChop2 Configuration (GND or VCC_IO) r SPREAD Interface eylP Integrated IREF 256 Microstep o PDN/UART B. Dwersteg, © r Driver Connect directly c optional UART interface i Sequencer Rsense to GND plane TRINAMIC 2016 m UART interface Use low inductivity SMD spreadCycle type, e.g. 1206, 0.5W for + Register Block RSA and RSB DIAG Driver error Programmable OB1 Diagnostic INDEX coolStep Index pulse Outputs Full Bridge B OB2 stallGuard4 opt. ext. clock CLK_IN Trimmed CLK oscillator/ 10-16MHz BRB RSB selector 3.3V or 5V VCC_IO Connect directly I/O voltage to GND plane 100n Y N D B N D E AD N G T P S EID opt. low power standby opt. driver enable
Figure 1.1 TMC2226 basic application block diagram THREE MODES OF OPERATION: OPTION 1: Standalone STEP/DIR Driver (Legacy Mode)
A CPU (µC) generates step & direction signals synchronized to additional motors and other components within the system. The TMC2226 operates the motor as commanded by the configuration pins and STEP/DIR signals. Motor run-current either is fixed, or set by the CPU using the analog input VREF. The pin PDN_UART selects automatic standstill current reduction. Feedback from the driver to the CPU is granted by the INDEX and DIAG output signals. Enable or disable the motor using the ENN pin. www.trinamic.com
