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TB6588FG Datasheet(PDF) 9 Page - Toshiba Semiconductor |
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TB6588FG Datasheet(HTML) 9 Page - Toshiba Semiconductor |
9 / 20 page TB6588FG 2008-4-25 9 9. Lead Angle Control The TB6588FG runs in forced commutation mode with a lead angle of 0° at startup. After switching to normal commutation mode, the lead angle is automatically changed to the value set by the LA1 and LA2 pins. 10. Overlapping Commutation Control When SEL_LAP = High, the TB6588FG runs in 120° commutation mode; When SEL_LAP = Low, it runs in overlapping commutation mode. In overlapping commutation mode, there occurs an overlapping period due to the lengthened commutation time between the zero cross point and the 120 ° commutation timing upon PWM signal switching as shown in the shaded areas. These periods vary depending on the lead angle setting. (3) Lead angle of 15° W Induced voltage PWM signal (1) Lead angle of 0° U V W (2) Lead angle of 7.5° U V U V W UV W 30° 22.5° 15° (4) Lead angle of 30° U V W 0° (3) Lead angle of 15° W Induced voltage PWM signal (1) Lead angle of 0° U V W (2) Lead angle of 7.5° U V U V W UV W 30° 22.5° 15° (4) Lead angle of 30° U V W 0° |
Similar Part No. - TB6588FG |
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Similar Description - TB6588FG |
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