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SI3400ISO-EVB

P1-P3P4-P6P7-P9P10-P12P13-P14
Si3400/1/2-EVB
Rev. 0.82 7
Figure 6. Bottom Layer
Si3400/1/2-EVB
8 Rev. 0.82
4. Bill of Materials
Table 1 is the BOM listing for the standard 5 V/Class 3 evaluation board.
Table 1. Si3400/1/2-EVB Bill of Materials
Item NI Qty Reference Value Rating Tol Dielectric PCB Footprint Manufacturer Part Number Manufacturer
1 3 C1,C3,C4 1 µF 100 V 10% X7R 1210
GRM32ER72A105KA01
C1210X7R101105K
Murata Venkel
2 1 C2 12 µF 12 µ Al Elec thru hole
EEUFC2A120
100ME12AX
Panasonic
Sanyo
3 1 C5 560 µF ±20% C3.5X8MM-RAD EEUFM0J561 Panasonic
4 1 C6 22 µF 6.3 V X5R 0805
GRM21BR60J226M
C0805X5R6R3226K
Murata Venkel
5 2 C7,C20 3.3 nF ±10% C0603 C0603X7R160-332K Venkel
6 1 C8 100 nF 16 V X7R 0805 C0805X7R160104K
1 C9 0.33 µF 16 V X7R C0805X7R160-334KNE Venkel
7
1
8
C10,C11,C12,
C13,C14,C15,
C16,C17
1000 pF 100 V 10% 0603 Venkel
1 C18 0.1 µF 100 V 10% X7R 0805 C0805X7R101104K Venkel
1 C19 150 pF 16 V 10% X7R 0805 C0805X7R160151K Venkel
8 1 D1 PDS5100 PDI5 PDS5100 Diodes Inc.
9 1 J1 MagJack RJ45
SI-52003-F
RJSE1R8090B-R
BelFuse Delta
10 2 J11,J12 CON1 101 Abbatron HH Smith
11 1 L1 33 µH MSS1278-333ML Coilcraft
12 1 FB1 22 6000 mA L0805 BLM21PG220SN1B MuRata
13 4 L2,L3,L4,L5 330 Ferrite 0805 BLM21PG331SH1 Murata
14 1 R1 330 0805 CR0805-10W3300F Venkel
15 1 R2 49.9 k 100 V 0805 CR0805-8W4992F Venkel
16 1 R3
30.9
(Si3402)
0805 CR0805-10W-30R9F Venkel
45.3
(Si3400/1)
0805 CR0805-10W-45R3F Venkel
17 1 R4 25.5 k 0805 CR0805-10W2552F Venkel
18 1 R5 2.87 k 0805 CR0805-10W2871F Venkel
19 1 R6 8.66 k 0805 CR0805-10W8661F Venkel
20 1 R7 30.1 k 0805 CR0805-10W3012F Venkel
1R8 0 0805 CR0805-000 Venkel
21 1 RLOAD 100 1/2 W ±1% R1210 CR1210-2W-1000F Venkel
22 1 U1 Si3400/1/2 5x5 QFN Si3400/1/2 Silicon Labs
24
2
8
D8,D9,D10,D11,
D12,D13,D14,
D15
S1B
1A
100 V
SMB S1B Diodes Inc.
23 NI 5 J5,J6,J7,J8,J9 HEADER 1 Standard
Notes:
1. C10–C17 are populated by default. See the “Surge” section in AN296 for more information.
2. Bypass diodes D8–D15 are not populated on Si3400 evaluation boards.
Si3400/1/2-EVB
Rev. 0.82 9
5. BOM Options
The Si3400/1/2 non-isolated EVB has been compensated for eight different output voltage and filter combinations:
3.3 V output standard ESR 1000 µF 6.3 V filter
5 V output standard ESR 1000 µF 6.3 V filter
9 output standard ESR 470 µF 16 V filter
12 V output standard ESR 470 µF 16 V filter
3.3 V output low ESR 560 µF 6.3 V filter
5 V output low ESR 560 µF 6.3 V filter
9 V output low ESR 330 µF 16 V filter
12 V output low ESR 330 µF 16 V filter
For the standard ESR capacitor, the ESR increase at very low temperatures may cause a loop stability issue. A
typical evaluation board has been shown to exhibit instability under very heavy loads at –20 °C. Due to self
heating, this condition is not a great concern. However, using a low ESR filter capacitor solves this problem but
requires some re-compensation of the feedback loop. The low ESR capacitor also improves load transient
response and output ripple.
The Si3400 and Si3401 (non–isolated) EVB was designed with a very simple pole-zero compensation consisting of
R7 and C7. Capacitors C19 and C20 can be added in parallel with resistors R6 and R7 for optimized performance.
The standard evaluation board is shipped with C19 included and is optimized for a standard ESR filter capacitor for
5 V output.
The following table gives the options that have been tested for other situations:
V
OUT
R6
(to adjust output
voltage)
Filter Cap C5
(type FM are
low ESR)
Filter Cap Part
Number
(Panasonic)
R7 C7 C19 C20
3.3 V 4.87 k 1000 µF, 6.3 V ECA0JM102 21 k 4.7 nF 150 pF NP
3.3 V 4.87 k 560 µF, 6.3 V EEUFM0J561 30.1 k 4.7 nF 150 pF 4.7 nF
5.0 V 8.66 k 100 0 µF, 6.3 V ECA0JM102 30.1 k 3.3 nF 150 pF NP
5.0 V 8.66 k 560 µF, 6.3 V EEUFM0J561 30.1 k 3.3 nF 150 pF 3.3 nF
9.0 V 18.2 k 470 µF, 16 V ECA1CM471 21 k 4.7 nF 150 pF NP
9.0 V 18.2 k 330 µF, 16 V EEUFM1C331 30.1 k 4.7 nF 150 pF 3.3 nF
12.0 V 24.9 k 470 µF, 16 V ECA1CM471 30.1 k 3.3 nF 150 pF NP
12.0 V 24.9 k 330 µF, 16 V EEUFM1C331 30.1 k 3.3 nF 150 pF 3.3 nF
P1-P3P4-P6P7-P9P10-P12P13-P14

SI3400ISO-EVB

Mfr. #:
Buy SI3400ISO-EVB
Manufacturer:
Silicon Labs
Description:
Power Management IC Development Tools PoE Powered Device Isolated Eval Board (up to 10W)
Lifecycle:
New from this manufacturer.
Delivery:
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