THT POWER TRANSFORMERS
EFD Series
Features
High power density and high efficiency
Multiple-output is available
Low height solution
Operating frequency up to 500kHz
Custom designs available
Application
Solar inverter, Server, Amplifier
Network, POE, Router
Elevator emergency power supply
Medical instrument power supply
Variable-frequency drive
Industrial power supply
High end LED power supply
High end charger and USB
Smart home electronics
Electrical power equipment
Test instrument
Specifications
|
Size
|
Fig
.
|
A
(Max.)
|
B
(Max.)
|
C
(Max.)
|
D
(Nom.)
|
E
(Nom.)
|
F
(Nom.)
|
Pins
(Optional)
|
fsw
(kHz)
|
Power
(W)2
|
|
EFD15
|
1
|
16.0
|
17.2
|
9.0
|
3.75
|
13.75
|
Φ0.6
|
4+4
|
100
|
10-15
|
|
EFD20-1
|
1
|
21.5
|
21.5
|
11.5
|
5.0
|
17.5
|
Φ0.6
|
4+4
|
100
|
20-30
|
|
EFD20-2
|
2
|
21.5
|
21.5
|
11.5
|
3.75
|
17.5
|
Φ0.6
|
5+5
|
100
|
20-30
|
|
EFD25
|
2
|
26.0
|
27.0
|
16.0
|
5.0
|
22.5
|
Φ0.8
|
5+5
|
100
|
30-60
|
|
EFD30
|
3
|
31.0
|
32.2
|
17.5
|
5.0
|
27.5
|
Φ0.8
|
6+6
|
100
|
50-100
|
1. Operating Temperature: -40℃~+125℃ (Includes temperature when the coil is heated).
2. Ouput power is only for reference at switching frequency 100kHz.
