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TMC2100-LA Datasheet(PDF) 8 Page - TRINAMIC Motion Control GmbH & Co. KG. |
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TMC2100-LA Datasheet(HTML) 8 Page - TRINAMIC Motion Control GmbH & Co. KG. |
8 / 48 page TMC2100 DATASHEET (Rev. 1.07 / 2017-MAY-15) 8 www.trinamic.com 3 Operation STEP/DIR inputs control the driver. The TMC2100 works in spreadCycle mode or stealthChop mode. It provides microstep interpolation and automatic standstill current reduction. ERROR signals driver error and INDEX signals the microstep table index position (low active open drain outputs). VCC_IO TMC2100 Step&Dir input with microPlyer 5V Voltage regulator charge pump 22n 63V 100n 16V CLK_IN +VM 5VOUT VSA 4.7µ +VIO VCC opt. ext. clock 12-16MHz 3.3V or 5V I/O voltage 100n 100n Sequencer Full Bridge A Full Bridge B +VM VS stepper motor N S OA1 OA2 OB1 OB2 Driver 100n BRB 100µF BRA RSA Use low inductivity SMD type, e.g. 1206, 0.5W RSB 100n Optional use lower voltage down to 6V 2R2 470n DAC Reference IREF Use low inductivity SMD type, e.g. 1206, 0.5W Status out (open drain) Configuration interface with TRISTATE detection CFG0 CFG1 CFG3 CFG2 ERROR INDEX TRISTATE configuration (GND, VCC_IO or open) Index pulse Driver error CFG4 CFG5 CFG6_ENN Opt. driver enable input B.Dwersteg, © TRINAMIC 2014 Figure 3.1 Standalone operation example circuit 3.1 CFG Pin Configuration TMC2100 configuration is hard wired. All pins CFG0 to CFG6 are evaluated using tristate detection in order to differentiate between: - CFG pin tied to GND - CFG pin open (no connection) - CFG pin tied to VCC_IO CFG6_ENN enables the driver chip. Further, it selects whether standby current reduction is used or not. CFG6_ENN: ENABLE PIN AND CONFIGURATION OF STANDSTILL POWER DOWN CFG6 Motor driver enable Standstill power down GND Enable N VCC_IO Disable Driver disabled. open Enable Y. Motor current ramps down from 100% to 34% in 44M clock cycles (3 to 4 seconds) after standstill detection (no step pulse for more than 1M clock). In combination with stealthChop, be sure not to work with too low overall current setting, as regulation will not be able to measure the motor current after stand still current reduction. This will result in very low motor current after the stand-still period. Please refer to Figure 1.2 for more information about standstill power down. |
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