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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L6280 датащи(PDF) 19 Page - STMicroelectronics |
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L6280 датащи(HTML) 19 Page - STMicroelectronics |
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19 / 26 page  Ratings of 35V:a max value of 33V is reccom- mended. In this case, at each couple of outputs for the bi- polar windings, a snubber network must be con- nected. This network is done by the series of a re- sistor and of one capacitor: Rsnub =VS max/Imotor peak; Csnub = Imotor peak/ (dv/dt) One dv/dt of 200V/ µsec is generally a correct choice. Of course, care must be taken in the Printed Cir- cuit Board design regarding the ground paths and the high current loops. An example of P.C.B. layout is shown in Figure 29ab; Figure 30 shows the Schematic Diagram of the circuit of the L6280 S.P.D. S.AB. The driving signals useful for this board can be easily generated by using an additional board (EMU KIT 512) not described here. On Figure 29a it can be observed the copper area near the I.C. is used to sink out the heat from the device. Useful thermal characteristics of the L6280 are shown in Figure 31 and 32. Figure 24: Application Test Circuit of the L6280 L6280 19/26 |
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