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Si82391CD-IS Folha de dados(PDF) 8 Page - Silicon Laboratories |
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Si82391CD-IS Folha de dados(HTML) 8 Page - Silicon Laboratories |
8 / 38 page Table 2.3. Si82397 Dual Drivers with No UVLO Status VIA VIB EN1 VDDI VDDA VDDB VOA VOB Notes H L H P P P H L L H H P P P L H H H H P P P H H L L H P P P L L X X L/NC P P P L L Device disabled X X X UP2 P P L L Fail-safe output when VDDI is unpowered H X H P P UP H UD3 VOA depends on VDDA state L X H P P UP L UD X H H P UP P UD H VOB depends on VDDB state X L H P UP P UD L Note: 1. The EN pin needs to be pulled down with a 100 kΩ resistor externally to GND. 2. The chip can be powered through the VIA,VIB input ESD diodes even if VDDI is unpowered. It is recommended that inputs be left unpowered when VDDI is unpowered. The EN pin has a special ESD circuit that prevents the IC from powering up through the EN pin. 3. UD = undetermined if same side power is UP. Table 2.4. Si82394/8 PWM Input HS/LS Drivers with UVLO Status PWM EN1 VDDI VDDA VDDB VOA VOB RDY Notes H H P P P H L H See Dead-time note and Figure 2.18 Dead Time Waveforms for High- Side/Low-Side Drivers on page 13 for timing L H P P P L H H X L/NC P P P L L H Device disabled X X UP2 P P L L UD3 Fail-safe output when VDDI unpowered H H P P UP H UD L VOA depends on VDDA state L H P P UP L UD L H H P UP P UD L L VOB depends on VDDB state L H P UP P UD H L Note: 1. The EN pin needs to be pulled down with a 100 kΩ resistor externally to GND. 2. The chip can be powered through the PWM input ESD diodes even if VDDI is unpowered. It is recommended that inputs be left unpowered when VDDI is unpowered. The EN pin has a special ESD circuit that prevents the IC from powering up through the EN pin. 3. UD = undetermined if same side power is UP. Si8239x Data Sheet System Overview silabs.com | Smart. Connected. Energy-friendly. Rev. 1.0 | 7 |
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