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參數(shù)資料
| 型號(hào)： | AN-20 |
| 英文描述： | Transient Suppression Techniques for TOPSwitch Power Supplies |
| 中文描述： | 暫態(tài)的TOPSwitch電源抑制技術(shù) |
| 文件頁數(shù)： | 8/8頁 |
| 文件大?。?/td> | 112K |
| 代理商： | AN-20 |
AN-20
A
6/96
8
PI-1717-120595
F1
L2
BR1
V+
V-
TO
POWER
SUPPLY
C6
0.1
μ
F
X2
VR3
MOV
COMMON
MODE
CHOKE
L
N
Figure 13. MOV VR3 Position Relative to X-Capacitor C6, Common Mode Choke L2 and Bridge Rectifier BR1.
avalanche and clamp the V+ high voltage DC bus) without
causing sufficient coil magnetostriction to stress and crack the
ferrite core.
For lower power 100 to 115 VAC applications, use higher
voltage TOP2XX
TOPSwitch
for improved voltage breakdown
margin relative to peak DC bus voltage V+ (across C1) which
occurs following application of the transient test voltage.
Select MOV or metal-oxide-varistor transient suppressor to
“clip” the peak off the higher transient test voltages. Connect
varistor VR3 between fuse F1 and common mode choke L2 as
shown in Figure 13. Long term reliability of VR3 should be
high because VR3 absorbs only a portion of the energy
associated with the highest peak transient test voltages. Lower
peak transient test voltages can be safely tolerated without VR3
absorbing significant energy.
JAPAN
Power Integrations, K.K.
Keihin-Tatemono 1st Bldg.
12-20 Shin-Yokohama 2-Chome, Kohoku-ku,
Yokohama-shi, Kanagawa 222
Japan
Phone:
81(0)454711021
Fax:
81(0)454713717
ASIA & OCEANIA
For Your Nearest Sales/Rep Office
Please Contact Customer Service
Phone:
4085239265
Fax:
4085239365
WORLD HEADQUARTERS
Power Integrations, Inc.
477 N. Mathilda Avenue
Sunnyvale, CA 94086
USA
Main:
4085239200
Customer Service:
Phone:
4085239265
Fax:
4085239365
AMERICAS
For Your Nearest Sales/Rep Office
Please Contact Customer Service
Phone:
4085239265
Fax:
4085239365
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.
PI Logo and
TOPSwitch
are registered trademarks of Power Integrations, Inc.
Copyright 1994, Power Integrations, Inc. 477 N. Mathilda Avenue, Sunnyvale, CA 94086
APPLICATIONS HOTLINE
World Wide
4085239260
APPLICATIONS FAX
Americas
Europe/Africa
44(0)1753622209
Japan
Asia/Oceania
4085239361
81(0)454713717
4085239364
EUROPE & AFRICA
Power Integrations (Europe) Ltd.
Mountbatten House
Fairacres
Windsor SL4 4LE
United Kingdom
Phone:
44(0)1753622208
Fax:
44(0)1753622209
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