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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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L9300 датащи(PDF) 53 Page - STMicroelectronics |
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L9300 датащи(HTML) 53 Page - STMicroelectronics |
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53 / 182 page  Figure 28. Hardware control configuration LS driver LS current sense HS current sense Current control HS LS VSx LOADx RETURNx HS driver SPI SPI Target current Sw freq. Dither GADG1807170937PS Current Set Point The load current set point can be programmed independently for each driver using the dedicated SETPOINT_x 11bit register. Formula used to evaluate set point varies depending on HILOAD bit setting in CONFIGURATION register and it is summarized in the table below. Table 29. Setpoint configuration SETPOINT Load target current HILOAD = 0 [bit resolution = 1500/2047 = 0.733 mA] Load target current HILOAD = 1 [bit resolution = 2000/2047 = 0.9770 mA] 0 0 [mA] 0 [mA] 1 1 * 0,733 [mA] 1 * 0,977 [mA] 2 2 * 0,733 [mA] 2 * 0,977 [mA] … … … 2046 2046 * 0,733 [mA] 2046 * 0,977 [mA] 2047 1500 [mA] 2000 [mA] Note: All the values written inside the SETPOINT_x 11-bit register are considered current set point to be reached by the algorithm. For this reason, if a 0x0 value is programmed, it is not guaranteed that the driver will be completely switched off and a current equal to 0mA + Ireg_acc_L is allowed to flow on the connected load. L9300 Solenoid driver DS12258 - Rev 4 page 53/182 |
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