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DRV8411 Datasheet(PDF) 21 Page - Texas Instruments |
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DRV8411 Datasheet(HTML) 21 Page - Texas Instruments |
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21 / 53 page  If the target motor speed is too high, the motor does not spin. Ensure that the motor can support the target speed. For a desired motor speed (v), microstepping level (nm), and motor full step angle (θstep), m step step v(rpm) n steps 360 / rot ¦ VWHSV V / step 60 s / min u u q T q u (4) 10.1.1.1.2.2 Current Regulation The trip current (ITRIP) is the maximum current driven through either winding. This setting determines the amount of torque the stepper motor will produce when operating in full stepping or half stepping control schemes. For an ITRIP value of 500 mA, the value of the sense resistor (RxIPROPI) is calculated as shown in Equation 5. RAIPROPI = RBIPROPI = VVREF (V) / [ITRIP (A) x AIPROPI (μA/A)] = 3.3 / [0.5 x 0.0002] = 33 kΩ (5) Select the closest available value of 33 kΩ for the sense resistors. www.ti.com DRV8411A SLVSGI9A – OCTOBER 2022 – REVISED JULY 2023 Copyright © 2023 Texas Instruments Incorporated Submit Document Feedback 21 Product Folder Links: DRV8411A |
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