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DRV10983ZPWPR 数据表(PDF) 29 Page - Texas Instruments |
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DRV10983ZPWPR 数据表(HTML) 29 Page - Texas Instruments |
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29 / 58 page  Phase Voltage Phase Current Phase BEMF t adv 29 DRV10983 www.ti.com SLVSCP6C – JULY 2014 – REVISED MAY 2016 Product Folder Links: DRV10983 Submit Documentation Feedback Copyright © 2014–2016, Texas Instruments Incorporated Figure 25. Advance Time (tadv) Definition The DRV10983 has two options for adjusting the motor commutate advance time. When CtrlAdvMd = 0, mode 0 is selected. When CtrlAdvMd = 1, mode 1 is selected. Mode 0: tadv is maintained to be a fixed time relative to the estimated BEMF zero cross as determined by Equation 3. tadv = tSETTING (3) Mode 1: tadv is maintained to be a variable time relative to the estimated BEMF zero cross as determined by Equation 4. tadv = tSETTING × (U-BEMF)/U. where • U is the phase voltage amplitude • BEMF is phase BEMF amplitude (4) tSETTING (in µs) is determined by the configuration of the TCtrlAdv [6:4] and TCtrlAdv [3:0] bits as defined in Equation 5. For convenience, the available tSETTING values are provided in Table 5. tSETTING = 2.5 µs × [TCtrlAdv[3:0]] << TCtrlAdv[6:4] (5) 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 0.0 0000000 00 90 0101001 29 800 1011010 5A 2.5 0000001 01 100 0101010 2A 880 1011011 5B 5 0000010 02 110 0101011 2B 960 1011100 5C 7.5 0000011 03 120 0101100 2C 1040 1011101 5D 10 0000100 04 130 0101101 2D 1120 1011110 5E 12.5 0000101 05 140 0101110 2E 1200 1011111 5F 15 0000110 06 150 0101111 2F 1280 1101000 68 17.5 0000111 07 160 0111000 38 1440 1101001 69 20 0001000 08 180 0111001 39 1600 1101010 6A 22.5 0001001 09 200 0111010 3A 1760 1101011 6B 25 0001010 0A 220 0111011 3B 1920 1101100 6C 27.5 0001011 0B 240 0111100 3C 2080 1101101 6D 30 0001100 0C 260 0111101 3D 2240 1101110 6E 32.5 0001101 0D 280 0111110 3E 2400 1101111 6F 35 0001110 0E 300 0111111 3F 2560 1111000 78 37.5 0001111 0F 320 1001000 48 2880 1111001 79 40 0011000 18 360 1001001 49 3200 1111010 7A 45 0011001 19 400 1001010 4A 3520 1111011 7B 50 0011010 1A 440 1001011 4B 3840 1111100 7C 55 0011011 1B 480 1001100 4C 4160 1111101 7D 60 0011100 1C 520 1001101 4D 4480 1111110 7E |
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