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DRV10975ZPWPR Datasheet(PDF) 32 Page - Texas Instruments |
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DRV10975ZPWPR Datasheet(HTML) 32 Page - Texas Instruments |
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32 / 65 page  32 DRV10975, DRV10975Z SLVSCP2E – JANUARY 2015 – REVISED MAY 2018 www.ti.com Product Folder Links: DRV10975 Submit Documentation Feedback Copyright © 2015–2018, Texas Instruments Incorporated tSETTING (in µs) is determined by the configuration of the TCtrlAdv [6:4] and TCtrlAdv [3:0] bits as defined in Equation 6. For convenience, the available tSETTING values are provided in Table 5. tSETTING = 2.5 µs × [TCtrlAdv[3:0]] << TCtrlAdv[6:4] (6) Table 5. Configuring Commutation Advance Timing by Adjusting tSETTING tSETTING (µs) TCtrlAdv [6:0] HEX tSETTING (µs) TCtrlAdv [6:0] HEX tSETTING (µs) TCtrlAdv [6:0] HEX 0 000 0000 00 80 010 1000 28 640 101 1000 58 2.5 000 0001 01 90 010 1001 29 720 101 1001 59 5 000 0010 02 100 010 1010 2A 800 101 1010 5A 7.5 000 0011 03 110 010 1011 2B 880 101 1011 5B 10 000 0100 04 120 010 1100 2C 960 101 1100 5C 12.5 000 0101 05 130 010 1101 2D 1040 101 1101 5D 15 000 0110 06 140 010 1110 2E 1120 101 1110 5E 17.5 000 0111 07 150 010 1111 2F 1200 101 1111 5F 20 000 1000 08 160 011 1000 38 1280 110 1000 68 22.5 000 1001 09 180 011 1001 39 1440 110 1001 69 25 000 1010 0A 200 011 1010 3A 1600 110 1010 6A 27.5 000 1011 0B 220 011 1011 3B 1760 110 1011 6B 30 000 1100 0C 240 011 1100 3C 1920 110 1100 6C 32.5 000 1101 0D 260 011 1101 3D 2080 110 1101 6D 35 000 1110 0E 280 011 1110 3E 2240 110 1110 6E 37.5 000 1111 0F 300 011 1111 3F 2400 110 1111 6F 40 001 1000 18 320 100 1000 48 2560 111 1000 78 45 001 1001 19 360 100 1001 49 2880 111 1001 79 50 001 1010 1A 400 100 1010 4A 3200 111 1010 7A 55 001 1011 1B 440 100 1011 4B 3520 111 1011 7B 60 001 1100 1C 480 100 1100 4C 3840 111 1100 7C 65 001 1101 1D 520 100 1101 4D 4160 111 1101 7D 70 001 1110 1E 560 100 1110 4E 4480 111 1110 7E 75 001 1111 1F 600 100 1111 4F 4800 111 1111 7F 8.4.6 Current Limit The DRV10975 has several current limit modes to help ensure optimal control of the motor and to ensure safe operation. The various current limit modes are listed in Table 6. Acceleration current limit is used to provide a means of controlling the amount of current delivered to the motor. This is useful when the system needs to limit the amount of current pulled from the power supply during motor start-up. The lock detection current limit is a configurable threshold that can be used to limit the current applied to the motor. Overcurrent protection is used to protect the device; therefore, it cannot be disabled or configured to a different threshold. The current limit modes are described in the following sections. Table 6. DRV10975 Current Limit Modes Current Limit Mode Situation Action Fault Diagnose Acceleration current limit Motor start Limit the output voltage amplitude No fault Lock detection current limit Motor locked Stop driving the motor and enter lock state Mechanical rotation error Overcurrent protection (OCP) Short circuit Stop driving and recover when OC signal disappeared Circuit connection |
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