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DRV10975ZPWPR Datasheet(PDF) 49 Page - Texas Instruments |
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DRV10975ZPWPR Datasheet(HTML) 49 Page - Texas Instruments |
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49 / 66 page  49 DRV10975, DRV10975Z www.ti.com SLVSCP2F – JANUARY 2015 – REVISED JUNE 2020 Product Folder Links: DRV10975 Submit Documentation Feedback Copyright © 2015–2020, Texas Instruments Incorporated Typical Application (continued) 9.2.1 Design Requirements Table 10 provides design input parameters and motor parameters for system design. Table 10. Recommended Application Range MIN TYP MAX UNIT Motor voltage 6.5 12 18 V BEMF constant Phase to phase, measured while the motor is coasting 0.001 1.8 V/Hz Phase-Phase resistance Measured ph-ph 0.6 24 Ω Phase-Phase inductance Measured ph-ph 0.07 mH Operating closed loop speed Electrical frequency 1 1000 Hz Operating current PGND, GND 0.1 1.5 A Absolute maximum current During start-up or lock condition 2 A Phase current is distorted for motors at lower duty cycle with Rph-ph less than 3 Ω thereby introducing acoustic noise. It is recommended to pick motors with phase to phase resistance Rph-ph above 4 Ω for a cleaner and lower acoustic (low harmonics) phase currents. Table 11. External Components COMPONENT PIN 1 PIN 2 RECOMMENDED CVCC VCC GND 10-µF ceramic capacitor rated for VCC CVCP VCP VCC 0.1-µF ceramic capacitor rated for 10 V CCP CPP CPN 0.1-µF ceramic capacitor rated for VCC × 2 LSW-VREG SW VREG 47-µH ferrite inductor with 1.15-A current rating, 1.15-A saturation current, and < 1 Ω DC resistance (buck mode) RSW-VREG SW VREG 39-Ω series resistor rated for ¼ W (linear mode) CVREG VREG GND 10-µF ceramic capacitor rated for 10 V CV1P8 V1P8 GND 1-µF ceramic capacitor rated for 5 V CV3P3 V3P3 GND 1-µF ceramic capacitor rated for 5 V RSCL SCL V3P3 4.75-kΩ pullup to V3P3 RSDA SDA V3P3 4.75-kΩ pullup to V3P3 RFG FG V3P3 4.75-kΩ pullup to V3P3 DZener (For 3.3-V Vreg mode) GND VREG Only for DRV10975Z, Zener Voltage (Vz) = 4 V (±5%). Peak Power > 2.5 W, Leakage Current <100 µA DZener (For 5-V Vreg mode) GND VREG Only for DRV10975Z, Zener Voltage(Vz) = 6 V (±5%). Peak Power > 2.5 W, Leakage Current <100 µA 9.2.2 Detailed Design Procedure 1. See the Design Requirements section and make sure your system meets the recommended application range. 2. See the DRV10983 and DRV10975 Tuning Guide and measure the motor parameters. 3. See the DRV10983 and DRV10975 Tuning Guide. Configure the parameters using DRV10975 GUI, and optimize the motor operation. The Tuning Guide takes the user through all the configurations step by step, including: start-up operation, closed-loop operation, current control, initial positioning, lock detection, and anti-voltage surge. 4. See the Programming Guide for the DRV10983 and Non-Volatile Memory section for burning tuned settings into EEPROM. 5. Build your hardware based on Layout Guidelines. |
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