LT8300ES5PBF Просмотр технического описания (PDF) - Linear Technology
Номер в каталоге
Компоненты Описание
производитель
LT8300ES5PBF Datasheet PDF : 24 Pages
| |||
LT8300
Applications Information
In general, choose a transformer with its primary mag-
netizing inductance about 20% to 40% larger than the
minimum values calculated above. A transformer with
much larger inductance will have a bigger physical size
and may cause instability at light load.
Selecting a Transformer
Transformer specification and design is perhaps the most
critical part of successfully applying the LT8300. In addition
to the usual list of guidelines dealing with high frequency
isolated power supply transformer design, the following
information should be carefully considered.
Linear Technology has worked with several leading mag-
netic component manufacturers to produce pre-designed
flyback transformers for use with the LT8300. Table 1
shows the details of these transformers.
Turns Ratio
Note that when choosing the RFB resistor to set output
voltage, the user has relative freedom in selecting a trans-
former turns ratio to suit a given application. In contrast,
the use of simple ratios of small integers, e.g., 4:1, 2:1,
1:1, provides more freedom in settling total turns and
mutual inductance.
Table 1. Predesigned Transformers — Typical Specifications
TRANSFORMER
PART NUMBER
LPRI
LLEAKAGE
(µH)
(µH) NP:NS:NB
VENDOR
750312367
400
4.5
8:1
Würth Elektronik
750312557
300
2.5
6:1
Würth Elektronik
750312365
750312558
300
1.8
4:1
Würth Elektronik
300
1.75
2:1:1
Würth Elektronik
750312559
750311019
300
2
1:1
Würth Elektronik
400
5
6:1:2
Würth Elektronik
750311558
750311660
300
1.5
4:1:1
Würth Elektronik
350
3
2:1:0.33 Würth Elektronik
750311838
350
3
2:1:1
Würth Elektronik
750311659
10396-T026
300
2
1:1:0.2 Würth Elektronik
300
2.5
6:1:2
Sumida
10396-T024
10396-T022
300
2
4:1:1
Sumida
300
2
2:1:0.33
Sumida
10396-T028
300
2.5
2:1:1
Sumida
L10-0116
500
7.3
6:1
BH Electronics
L10-0112
230
3.38
4:1
L11-0067
230
2.16
4:1
* All the transformers are rated for 1.5kV Isolation.
BH Electronics
BH Electronics
TARGET APPLICATIONS
48V to 3.3V/0.51A, 24V to 3.3V/0.37A, 12V to 3.3V/0.24A
48V to 3.3V/0.42A, 24V to 3.3V/0.32A, 12V to 3.3V/0.22A
48V to 5V/0.38A, 24V to 5V/0.27A, 12V to 5V/0.17A
48V to 5V/0.29A, 24V to 5V/0.22A, 12V to 5V/0.15A
48V to ±12V/67mA, 24V to ±12V/50mA, 12V to ±12V/33mA
48V to ±15V/62mA, 24V to ±15V/44mA, 12V to ±15V/28mA
48V to 24V/67mA, 24V to 24V/50mA, 12V to 24V/33mA
48V to 3.3V/0.42A, 24V to 3.3V/0.32A, 12V to 3.3V/0.22A
48V to 5V/0.38A, 24V to 5V/0.27A, 12V to 5V/0.17A
48V to 5V/0.29A, 24V to 5V/0.22A, 12V to 5V/0.15A
48V to 12V/0.134A, 24V to 12V/0.1A, 12V to 12V/0.066A
48V to 15V/0.124A, 24V to 15V/0.088A, 12V to 15V/0.056A
48V to ±12V/67mA, 24V to ±12V/50mA, 12V to ±12V/33mA
48V to ±15V/62mA, 24V to ±15V/44mA, 12V to ±15V/28mA
48V to 24V/67mA, 24V to 24V/50mA, 12V to 24V/33mA
48V to 3.3V/0.42A, 24V to 3.3V/0.32A, 12V to 3.3V/0.22A
48V to 5V/0.38A, 24V to 5V/0.27A, 12V to 5V/0.17A
48V to 5V/0.29A, 24V to 5V/0.22A, 12V to 5V/0.15A
48V to 12V/0.134A, 24V to 12V/0.1A, 12V to 12V/0.066A
48V to 15V/0.124A, 24V to 15V/0.088A, 12V to 15V/0.056A
48V to ±12V/67mA, 24V to ±12V/50mA, 12V to ±12V/33mA
48V to ±15V/62mA, 24V to ±15V/44mA, 12V to ±15V/28mA
48V to 3.3V/0.42A, 24V to 3.3V/0.32A, 12V to 3.3V/0.22A
48V to 5V/0.38A, 24V to 5V/0.27A, 12V to 5V/0.17A
48V to 5V/0.29A, 24V to 5V/0.22A, 12V to 5V/0.15A
48V to 5V/0.29A, 24V to 5V/0.22A, 12V to 5V/0.15A
8300f
12
Share Link: 