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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DRV8461SPWPR датащи(PDF) 20 Page - Texas Instruments |
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DRV8461SPWPR датащи(HTML) 20 Page - Texas Instruments |
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20 / 117 page  7.3.2.3 Full-Scale Current Rating The full-scale current describes the top of the sinusoid current waveform while microstepping. Because the sinusoid amplitude is related to the RMS current, the full-scale current is also determined by the thermal considerations of the device. The full-scale current rating is approximately √2 × IRMS for a sinusoidal current waveform, and IRMS for a square wave current waveform (full step). AOUT Step Input BOUT Full-scale current RMS current Figure 7-3. Full-Scale and RMS Current 7.3.3 PWM Motor Drivers The DRV8461 has drivers for two full H-bridges to drive the two windings of a bipolar stepper motor. Figure 7-4 shows the block diagram of the circuitry. Gate Drivers VM Current Sense VM Current Sense AOUT1 AOUT2 PGNDA Microstepping and Current Regulation Logic Figure 7-4. PWM Motor Driver Block Diagram 7.3.4 Microstepping Indexer Built-in indexer logic in the device allows a number of different step modes. The MICROSTEP_MODE bits in the SPI register or the M0 and M1 pins are used to configure the step mode as shown in Table 7-5. DRV8461 SLOSE98 – DECEMBER 2022 www.ti.com 20 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: DRV8461 |
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