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Si8284 データシート(PDF) 11 Page - Silicon Laboratories

部品番号 Si8284
部品情報  4.0 Amp ISODrivers with Integrated DC-DC Converters
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メーカー  SILABS [Silicon Laboratories]
ホームページ  http://www.silabs.com
Logo SILABS - Silicon Laboratories

Si8284 データシート(HTML) 11 Page - Silicon Laboratories

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2.13 Transformer Design
The internal switch dc-dc (Si8281, Si8283) and external switch dc-dc (Si8282, Si8284) operate in different topologies and, thus, require
different transformer designs. The table below provides a list of transformers and their parametric characteristics that have been valida-
ted to work with Si828x products. It is recommended that users order the transformers from the vendors per the part numbers given
below.
To manufacture transformers from your preferred suppliers that may not be listed below, please specify to supplier the parametric char-
acteristics as specified in the table below for a given input voltage and isolation rating.
Table 2.2. Si828x Recommended Transformers
Transformer Supplier
Ordering Part #
Input
Voltage
Turns Ratio
Leakage
Inductance
Primary
Inductance
Primary
Resistance
Isolation
Rating
UMEC
www.umec-usa.com
UTB02257s
3.0–5.5 V
1:15:5
125 nH max 1.5 µH ± 5% 0.05 Ω max
5 kV
UTB02241s
4.5–5.5 V
1:9:33.667
100 nH max
2 µH ± 5%
0.05 Ω max
5 kV
UTB02253s
7–24 V
1.2:1.21
200 nH max 25 µH ± 5% 0.225 Ω max
5 kV
Coilcraft
www.coilcraft.com
TA7788-AL
7–24 V
1:1.25:0.75
550 nH max 25 µH ± 5% 0.460 Ω max
5 kV
Si8281/82/83/84 Data Sheet
System Overview
silabs.com | Smart. Connected. Energy-friendly.
Preliminary Rev. 0.5 | 10


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