SI3400-EVB Silicon Laboratories Inc, SI3400-EVB Datasheet - Page 8
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SI3400-EVB
Manufacturer Part Number
SI3400-EVB
Description
BOARD EVAL FOR SI3400
Manufacturer
Silicon Laboratories Inc
Type
PWM Controllersr
Datasheet
1.SI3400-E1-GM.pdf
(20 pages)
Specifications of SI3400-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
Si3400
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
Si3400
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Output
-
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1352
SI3400-EVB
SI3400-EVB
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