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SI3401 データシート(PDF) 9 Page - Silicon Laboratories |
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SI3401 データシート(HTML) 9 Page - Silicon Laboratories |
9 / 20 page Si3400/Si3401 Rev. 0.9 9 Figure 2. Schematic—Class 1 with Isolated 5.0 V Output* *Note: This is a simplified schematic. See “AN296: Using the Si3400/01 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 1100 µF 20% 10 V Switcher load capacitor. 100 µF in parallel 1000 µF and optional 1 µH inductor for additional filtering. C4 Capacitor 15 nF 10% 16 V Feedback compensation. C5 Capacitor 220 nF 10% 16 V Feedback compensation. C7 Capacitor 0.1 µF 20% 16 V VDD bypass capacitor. C8 Capacitor 1 µF 20% 16 V Isolated mode soft start (tie ISOSSFT to VDD if this feature is not used). R1 Resistor 25.5 k Ω 1% 1/16 W Detection resistor. R2 Resistor 4.99 k Ω 1% 1/16 W Pull-up resistor. R3 Resistor 100 Ω 1% 1/16 W Feedback compensation resistor. R4 Resistor 10 k Ω 1% 1/16 W Feedback compensation resistor. R5 Resistor 2.05 k Ω 1% 1/16 W Pull-up resistor. R6 Resistor 36.5 k Ω 1% 1/16 W Feedback resistor divider. R7 Resistor 12.1 k Ω 1% 1/16 W Feedback resistor divider. R8 Resistor 127 Ω 1% 1/16 W Classification resistor. D1 Diode 10 A 40 V Schottky diode; part no. PN PDS1040. D2 Diode 1 A 100 V Snubber diode (1N4148) D3 Diode 15 V 9 A Snubber diode (DFLT15A) T1 Transformer 40 µH Coilcraft part number FA2672 (5 V). PS2911 Optocoupler TLV431 Voltage reference C1 Si3400 Si3401 RJ-45 To Ethernet PHY RCL RDET CT1 CT2 SP1 SP2 C2 SWO C3 D1 R5 R7 R6 PS2911 T1 R2 VDD EROUT R1 ISOSSFT R3 C5 C4 R4 C7 R8 D2 D3 C8 |
同様の部品番号 - SI3401 |
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同様の説明 - SI3401 |
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