DI-39 데이터 시트보기 (PDF) - Power Integrations, Inc
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DI-39 Datasheet PDF : 2 Pages
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DI-39
Key Design Points
• Use of foil for the 3.3 V and 5 V windings also helps to
optimize cross-regulation.
• Optional capacitor C7 is the “soft-finish” capacitor and
prevents overshoot on startup.
• Compact layout for components D7, D10, D11, C11,
C12, C15 will improve cross-regulation and efficiency.
Compact layout for L2, L3, L4, C17, C18, and C20 will
achieve best output ripple.
• Figure 2 shows conducted EMI at 230 VAC full load, with
output “Artificial Hand” grounding. Floating output return
gives lower results.
• Table 2 shows the cross regulation of the supply over load
for both 115 VAC and 230 VAC.
80
70
60
QP
50
AV
40
Quasi Peak
30
20
10
0
Average
-10
-20
0.15
1.0
10.0
MHz
-100.0
Figure 2. EMI at 230 VAC Full Load with "Artificial Hand"
Grounding of Output.
TRANSFORMER PARAMETERS
Core Material
Bobbin
Winding Details
Winding Order
(Pin Numbers)
EEL25
Himag MZ4 EEL25.4, Taiwan AL of
344 nH/T2
EEL25 Vertical 14 Pins
Shield: 32T x 2 x 32 AWG
Primary: 64T x 2 x 32 AWG
Bias: 10T x 4 x 32 AWG
Shield: 2T x 8 x 32 AWG
+3.3V: 4T x foil 0.052 x 14 mm
+5V: 1T x foil 0.052 x 14 mm
+12V: 4T x 4 x 32 AWG
-12V: 7T x 4 x 32 AWG
Shield (NC-5), tape, Primary (1-4), tape,
Bias (7-6), tape, Shield (5-NC), tape,
+12 V (13-8), +3.3 V (11,12-9,10), +5 V
(9-10,13), tape, -12 V (14-11, 12), tape
Primary Inductance
(Pins 1-4 all others
open)
Primary Resonant
Frequency
1.42 mH ±10% at 132 kHz
300 kHz minimum
Leakage Inductance 30 µH maximum
Table 1. Transformer Construction Information.
Output Load
Voltage Range
Cross Regulation (%)
(V)
(%) -4 -3 -2 -1 0 1 2 3 4
3.3 10-100
5 10-100
12 10-100
-12
100
Table 2. Worst Case Cross Regulation at 115 VAC and 230 VAC.
For the latest updates, visit our Web site: www.powerint.com
Power Integrations reserves the right to make changes to its products at any time to improve reliability or manufacturability.
Power Integrations does not assume any liability arising from the use of any device or circuit described herein, nor does it convey any
license under its patent rights or the rights of others. 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, Inc.
PI Expert is a trademark of Power Integrations, Inc. ©Copyright 2002, Power Integrations, Inc.
WORLD HEADQUARTERS
AMERICAS
Power Integrations, Inc.
San Jose, CA 95138 USA
Customer Service:
Phone: +1 408-414-9665
Fax:
+1 408-414-9765
e-mail: usasales@powerint.com
CHINA
Power Integrations International
Holdings, Inc.
China
Phone: +86-755-8367-5143
Fax:
+86-755-8377-9610
e-mail: chinasales@powerint.com
EUROPE & AFRICA
Power Integrations (Europe) Ltd.
United Kingdom
Phone: +44-1344-462-300
Fax:
+44-1344-311-732
e-mail: eurosales@powerint.com
KOREA
Power Integrations
International Holdings, Inc.
Seoul, Korea
Phone: +82-2-782-2840
Fax:
+82-2-782-4427
e-mail: koreasales@powerint.com
SINGAPORE
Power Integrations, Singapore
Republic of Singapore 308900
Phone: +65-6358-2160
Fax:
+65-6358-2015
e-mail: singaporesales@powerint.com
JAPAN
Power Integrations, K.K.
Keihin-Tatemono 1st Bldg.
Japan
Phone: +81-45-471-1021
Fax:
+81-45-471-3717
e-mail: japansales@powerint.com
APPLICATIONS HOTLINE
World Wide +1-408-414-9660
A
11/02
www.powerint.com
TAIWAN
Power Integrations
International Holdings, Inc.
Taipei, Taiwan
Phone: +886-2-2727-1221
Fax:
+886-2-2727-1223
e-mail: taiwansales@powerint.com
INDIA (Technical Support)
Innovatech
Bangalore, India
Phone: +91-80-226-6023
Fax:
+91-80-228-9727
e-mail: indiasales@powerint.com
APPLICATIONS FAX
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