DI-35 View Datasheet(PDF) - Unspecified
Part Name
Description
Manufacturer
DI-35 Datasheet PDF : 2 Pages
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DI-35
• Keep power loop layouts (primary and secondary) tight to
minimize noise (EMI and output ripple) and power loss.
• At least 10 cm2 of PCB copper area should be used for
heatsinking.
16.1
16
15.9
15.8
15.7
15.6
15.5
15.4
15.3
15.2
15.1
15
0
0.5 1
1.5
2
2.5
IOUT (A)
Figure 2. 115 VAC V-I Curve.
7
6
5
4
3
2
1
0
1A
2.2 A
-1
0
50
100
Time (ms)
Figure 3. Load Current for Thermal Test. (10 ms/div)
TRANSFORMER PARAMETERS
Core
Bobbin
Nippon Ceramic EF-25-NC-2H
ALG of 247 nH/T2
Miles-Platts FE0100 with TBS-601
terminals
Winding Details
Primary: 65T, 2 layers, 28 AWG
Secondary: 9T, 2 x 26 AWG, Triple
Insulated
Bias: 8T, 2 x 28 AWG
Primary: 3-1, tape
Winding Order (pin numbers) Secondary: 9,10-6,7, tape,
Bias: 4-5, tape 3L
Primary Inductance
1059 µH ± 10%
Primary Resonant Frequency 0.75 MHz (Min)
Leakage Inductance
28 µH (Max)
Table 1. Transformer Construction Information.
THERMAL TEST RESULSTS
Thermal test load current is 1 A for 30 ms, 2.2 A for 10 ms
Test Case
T (°C) @
85 VAC
T (°C) @
265 VAC
T1 (Transformer)
57
59
U1 (TOP245P
64
51
D7 (Op Rectifier)
58
59
C8 (Op Capacitor)
41
40
Table 2. Thermal Test with Pulsed Load of Figure 3. 25 °C
Ambiant, Open Frame, 85 VAC and 265 VAC input.
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herein nor does it convey any license under its patent rights or the rights of others. POWER INTEGRATIONS MAKES NO WARRANTIES HEREIN AND SPECIFICALLY
DISCLAIMS ALL WARRANTIES INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
AND NON-INFRINGEMENT OF THIRD PARTY RIGHTS. The products and applications illustrated herein (including circuits external to the products and transformer
construction) may be covered by one or more U.S. and foreign patents or potentially by pending U.S. and foreign patent applications assigned to Power Integrations.
A complete list of Power Integrations' patents may be found at www.powerint.com.
The PI logo, TOPSwitch, TinySwitch, LinkSwitch and EcoSmart are registered trademarks of Power Integrations. PI Expert and DPA-Switch
are trademarks of Power Integrations. Copyright 2004, Power Integrations
Power Integrations
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A
3/04
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