SI3401-EVB Silicon Laboratories Inc, SI3401-EVB Datasheet - Page 8

• Manufacturer Part Number: SI3401-EVB
• Description: BOARD EVAL FOR SI3401
• Manufacturer: Silicon Laboratories Inc
• Type: PWM Controllersr

Specifications of SI3401-EVB

• Mfg Application Notes: SI3400/01 High Power AppNote Si3400/1 PoE PD Controllers AppNote
• Main Purpose: Special Purpose DC/DC, Power Over Ethernet
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 5V
• Voltage - Input: 44 ~ 57V
• Regulator Topology: Buck
• Frequency - Switching: 350kHz
• Board Type: Fully Populated
• Utilized Ic / Part: Si3401
• Input Voltage: 5 V
• Output Voltage: 3.3 V
• Interface Type: Ethernet
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Product: Power Management Modules
• For Use With/related Products: Si3401
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1386

Si3400/Si3401
2. Typical Application Schematics
*Note: This is a simplified schematic. See “AN296:
8
Item
RJ-45
C1
C2
C3
C4
C5
C6
C7
R1
R2
R3
R4
D1
L1
Designs”
Ethernet PHY
To
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
for more details and complete application schematics.
Resistor
Resistor
Resistor
Resistor
Inductor
Diode
Type
C2
Figure 1. Schematic—Class 0 with Non-Isolated 5 V Output*
Table 7. Component Listing—Class 0 with 5 V Output
C1
1000 µF
25.5 kΩ
7.32 kΩ
2.87 kΩ
30.1 kΩ
150 pF
0.1 µF
0.1 µF
0.1 µF
3.3 nF
Value
33 µH
15 µF
R1
CT1
CT2
SP1
SP2
RDET
RCL
Using the Si3400/01 PoE PD Controller in Isolated and Non-Isolated
Toler.
20%
20%
20%
20%
10%
10%
10%
20%
1%
1%
1%
1%
Rev. 0.9
Si3400
Si3401
C5
1/16 W
1/16 W
1/16 W
1/16 W
Rating
100 V
100 V
100 V
3.5 A
10 V
16 V
16 V
16 V
16 V
EROUT
SWO
Switcher supply capacitor. Several paral-
lel capacitors are used for lower ESR.
PD input supply capacitor.
Switcher load capacitor - 1000 µF in par-
allel with and X5R 22 µF for lower ESR.
VDD bypass capacitor.
Softstart capacitor.
Compensation capacitor.
Compensation capacitor.
Detection resistor.
Feedback resistor divider.
Feedback resistor divider.
Feedback compensation resistor.
Schottky diode; part no. PDS5100.
Coilcraft part no. DO5010333.
FB
C6
R4
D1
C4
L1
C7
R3
R2
Notes
C3