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SI3402-B-GM Fiches technique(PDF) 9 Page - Silicon Laboratories |
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SI3402-B-GM Fiches technique(HTML) 9 Page - Silicon Laboratories |
9 / 21 page Si3402-B Rev. 1.0 9 Figure 2. Schematic—Class 1 with Isolated 5.0 V Output* *Note: This is a simplified schematic. See application note, “AN956: Using the Si3402-B PoE PD Controller in Isolated and Non-Isolated Designs” for more details and complete application schematics. Table 8. Components—Class 1 with Isolated 5.0 V Output Item Type Value Toler. Rating Notes C1 Capacitor 15 µF 20% 100 V Switcher supply capacitor. Several paral- lel capacitors are used for lower ESR. C2 Capacitor 0.1 µF 20% 100 V PD input supply capacitor. C3 Capacitor 1000 µF 20% 10 V Switcher load capacitor. 100 µF in paral- lel 1000 µF and optional 1 µH inductor for additional filtering. C4 Capacitor 3.3 nF 10% 16 V Feedback compensation. C5 Capacitor 15 nF 10% 16 V Feedback compensation. C7 Capacitor 0.1 µF 20% 16 V VDD bypass capacitor. C8 Do not populate. R1 Resistor 24.3 k 1% 1/16 W Detection resistor. R2 Resistor 4.7 k 10% 1/16 W Pull-up resistor. R3 Resistor 0 1/16 W 0 resistor. R4 Resistor 0 1/16 W 0 resistor. R5 Resistor 2.05 k 1% 1/16 W Pull-up resistor. R6 Resistor 36.5 k 1% 1/16 W Feedback resistor divider. R7 Resistor 12.1 k 1% 1/16 W Feedback resistor divider. R8 Resistor 127 1% 1/16 W Classification resistor. D1 Diode 10 A 40 V Schottky diode; part no. PN PDS1040. D2 Diode 2 A 100 V Snubber diode (1N4148) D3 Diode 30 V 4.22 A Snubber diode (DFLT30A) T1 Transformer 40 µH Coilcraft part number FA2672 (5 V). VO618A Opto-coupler TLV431 Voltage reference C1 Si3402 RJ-45 To Ethernet PHY RCL RDET CT1 CT2 SP1 SP2 C2 SWO C3 D1 R5 R7 R6 VO618A T1 R2 VDD EROUT R1 ISOSSFT R3 C5 C4 R4 C7 R8 D2 D3 C8 |
Numéro de pièce similaire - SI3402-B-GM |
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Description similaire - SI3402-B-GM |
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