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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) 55 Page - STMicroelectronics |
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L9300 датащи(HTML) 55 Page - STMicroelectronics |
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55 / 178 page  Figure 32. Driver timing chart HS_config=0, SW_cntr=1 INx INx_in_ft LOADx_toffXX LOADx_tonXX 80% 20% Trigger for average current calculation Average current calculation interval LOADx GADG1807171514PS Figure 33. Driver timing chart HS_config=1, SW_cntr=1 INx INx_in_ft LOADx_tonXX LOADx_toffXX 80% 20% Trigger for average current calculation Average current calculation interval LOADx GADG1807171519PS 10.1.1.3 Solenoid current feedback Solenoid computed average current, sensed through internal current sense amplifier, is available for SPI reading in the AVGCUR register; the current information is stored in 11 bits. AVGCUR is the average current post processed by the control algorithm over an entire PWM period. The Average current is updated every PWM cycle. The calculation starts when PWM raises and stops when a new PWM raises. Table 32. Average current configuration AVGCURR 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] L9300 Valve drivers DS12258 - Rev 5 page 55/178 |
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