Custom Design Available: <60W with up to Reinforced
Insulation
Electrical Specifications @ 25C- Operating Temperature -40C to +125C
Pri. Inductance
(3-2)
2800µH±15%
Lk. Inductance w/
(4,5,8,10)
(3-2)
PH0256NL
DCR
Hi-Pot
K1 Factor
PI IC’s
Pri. Inductance
Lk. Inductance w/
(4-1)
(5,6,7,8)
(4,1)
PH0259NL
DCR
(5-6)
(8-6)
Pri-Sec
TNY266/274
(3-1)
(3-1)
(4,5,9,10)
(3-1)
(4-5)
(10-9)
Pri-Sec
790µH±10%
30µH max shorted
1.085
0.015
0.026
4030
TNY279
!
65µH max shorted
3.3
0.02
0.13
500 Vrms
10100
TNY264/274
1800µH±15%
60µH max shorted
2.556
0.0168
0.174
500 Vrms
7200
ΩMax
ΩMax
9Vdc, 0.02A
(10-8)
(4-5)
Pri-Sec
5Vdc, 1A
80-375Vdc
132KHz
FLYBACK TRANSFORMER
4
8
1
NC
5
24Vdc,
0.02A
5Vdc, 0.05A
6
Hi-Pot
K1 Factor
PI IC’s
Pri. Inductance
Lk. Inductance w/
PH0262NL
FLYBACK TRANSFORMER
95-265Vdc
132KHZ
12Vdc, 1.25A
DCR
Hi-Pot
K1 Factor
PI IC’s
ΩMax
9Vdc, 0.02A
FLYBACK TRANSFORMER
1
power.pulseelectronics.com
P724.B (03/18)
http://www.power.pulseelectronics.com/contact
Switch Mode Transformer for
AC/DC offline Applications
EE16H, EE16V, EF20H and EF25V Platforms
Pri. Inductance
Lk. Inductance w/
(3-1)
(3-1)
(4,5,6,7,9,10)
(3-1)
(4-5)
(9-10)
876
µH±10%
28µH max shorted
0.5
0.026
0.025
1500 Vrms
2900
TOP244/245/246/254/264
ΩMax
1
85V-265V
132KHz
3
4
PH0270NL
DCR
9
10
12Vdc, 2.5A
7
6
12Vdc, 0.02A
Hi-Pot
K1 Factor
PI IC’s
Pri-Sec
5
FLYBACK TRANSFORMER
Notes:
1. The temperature of the component (ambient plus temperature rise)
must be within the stated operating temperature range.
2. The above transformers and inductors have been tested and approved
by Pulse’s power IC partners and are sited in the appropriate datasheet or
evaluation board documentation at these companies. To determine which
IC and IC partners are matched with the above Pulse part numbers please
consult the IC Cross Reference on the Pulse website.
3. For flyback topology applications, it is necessary to ensure that the
transformer will not saturate in the application. The peak flux density (Bpk)
should remain below 2700Gauss. To calculate the peak density, use the
following formula: Bpk (Gauss) = K1_Factor * Ipk (A)
PH0256NL
4. In high volt-sec applications, it is important to calculate the core loss of the
transformer. Approximate transformer core loss can be calculated as:
CoreLoss (W) = 3.6E-14 * (Freq_kHz) * (ΔB_Gauss) where
ΔB
can be calculated as:
For Flyback Topology:
ΔB
= K1_Factor *
Δ(A)
For Forward Topology:
ΔB
= K1_Factor * Volt-µsec
5. The “NL” suffix indicates an RoHS-compliant part number. Non-NL suffixed
parts are not necessarily RoHS compliant, but are electrically and mechanically
equivalent to NL versions. If a part number does not have the “NL” suffix, but an
RoHS compliant version is required, please contact Pulse for availability.
Mechanical
1
power.pulseelectronics.com
P724.B (03/18)
http://www.power.pulseelectronics.com/contact
Switch Mode Transformer for
AC/DC offline Applications
EE16H, EE16V, EF20H and EF25V Platforms
Mechanical
PH0259NL
4
.630 MAX
[16.00]
PULSE PH0259NL
DATE CODE ORIGIN
.480
[12.20]
1
3X.138 =.413
[3X3.50 =10.50]
10X Ă.035
[Ă.90]
.720 MAX
[18.30]
5
10
5X.106 =.531
[5X2.70 =13.50]
.710 MAX
[18.00]
.160 ā.020
[4.00ā0.50]
1
4
3X .138=.413
[3X 3.50 =10.50]
.480
[12.20]
10X Ă.024
[Ă.60]
5X .106 =.531
[5X 2.70 =13.50]
10
5
Mechanical
PH0262NL
1
power.pulseelectronics.com
P724.B (03/18)
http://www.power.pulseelectronics.com/contact
Switch Mode Transformer for
AC/DC offline Applications
EE16H, EE16V, EF20H and EF25V Platforms
Mechanical
PH0270NL
1.12 MAX
[28.45 MAX]
10
6
Ă.047
[Ă1.2]
(.200)
[(5.08)]
.740 MAX
[18.80 MAX]
PULSE
PH0270NL
CLASS B E119132 B8
DATE CODE ORIGIN
(.500)
[(12.70)]
1
5
1.10 MAX
[27.94 MAX]
.140ā.020
[3.50ā0.50]
PIN 1 IDENTIFICATION
.200ā.008
[5.08ā0.20]
Ă.032ā.004
[Ă0.80ā0.10]
.500ā.016
[12.70ā0.40)]
For More Information
Pulse Worldwide
Headquarters
15255 Innovation Drive Ste 100
San Diego, CA 92128
U.S.A.
Pulse Europe
Pulse Electronics GmbH
Am Rottland 12
58540 Meinerzhagen
Germany
Pulse China Headquarters
Pulse Electronics (ShenZhen) CO., LTD
D708, Shenzhen Academy of
Aerospace Technology,
The 10th Keji South Road,
Nanshan District, Shenzhen, P.R.
China 518057
Tel: 86 755 33966678
Fax: 86 755 33966700
Pulse North China
Room 2704/2705
Super Ocean Finance Ctr.
2067 Yan An Road West
Shanghai 200336
China
Tel: 86 21 62787060
Fax: 86 2162786973
Pulse South Asia
3 Fraser Street
0428 DUO Tower
Singapore 189352
Pulse North Asia
1F, No.111
Xiyuan Road
Zhongli District
Taoyuan City 32057
Taiwan (R.O.C)
Tel: 886 3 4356768
Fax: 886 3 4356820
Tel: 858 674 8100
Fax: 858 674 8262
Tel: 49 2354 777 100
Fax: 49 2354 777 168
Tel: 65 6287 8998
Fax: 65 6280 0080
Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product names mentioned herein may
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