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STK984-090A-E Fiches technique(PDF) 9 Page - ON Semiconductor |
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STK984-090A-E Fiches technique(HTML) 9 Page - ON Semiconductor |
9 / 20 page STK984-090A-E NoA2290-9/20 Description of Operation 3-phase DC Motor Driver Hybrid-IC controlling outputs with signal input terminals UT to WT and UB to WB. The output section is “Active Hi” control type that goes to ON operation when the input control signal is Hi level. 1. Method of Driving MOSFET Output Section (1) Upper-phase MOSFET The upper-phase MOSFET will be driven by the built-in charge pump circuit. The gate voltage VG from the built-in charge pump circuit is set at VG= V+B1+12V V+B1(V) VG(V) VGS V+B1 24 9 6 35 21 VGS=V+B1+12V Pressure Rising State The oscillation of the charge pump circuit will be OFF by The Over Voltage Protection Normal Oscillation State 14 6 (2) Lower-phase MOSFET Lower-phase MOSFET operates the supply voltage V+B1 as the supply source of the drive voltage VGS. V+B1 (V) VGS (V) 20 9 6 VGS (V) 17 V+B1 =18.5 V or more is VGS= 17V Fixed 15 12 20 |
Numéro de pièce similaire - STK984-090A-E |
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Description similaire - STK984-090A-E |
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