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參數(shù)資料
| 型號： | AN4003 |
| 廠商： | Fairchild Semiconductor Corporation |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; No. of Contacts:37; Series:MS27656; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle RoHS Compliant: No |
| 中文描述： | PC電源設(shè)計(jì)KA3511 |
| 文件頁數(shù)： | 1/28頁 |
| 文件大?。?/td> | 233K |
| 代理商： | AN4003 |
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Rev C, November 1999
November 2,1999
1
AN4003
PC POWER SUPPLY DESIGN WITH KA3511
Sang-Tae Im
1. GENERAL DESCRIPTION
The KA3511 is a fixed-frequency improved-performance pulse-width modulation control circuit with
complete housekeeping circuitry for use in the secondary side of SMPS (Switched mode power
supply). It contains various functions, which are precision voltage reference, over voltage protec-
tion, under voltage protection, remote on/off control, power good signal generator and etc.
OVP (Over voltage protection) section
It has OVP functions for +3.3V,+5V,+12V and PT outputs. The circuit is made up of a comparator
with four detecting inputs and without hysteresis voltage. Especially, PT (Pin16) is prepared for an
extra OVP input or another protection signal.
UVP (Under voltage protection) section
It also has UVP functions for +3.3V, +5V, +12V outputs. The block is made up of a comparator with
three detecting inputs and without hysteresis voltage.
Remote on/off section
Remote on/off section is used to control SMPS externally. If a high signal is supplied to the remote
on/off input, PWM signal becomes a high state and all secondary outputs are grounded. The
remote on/off signal is transferred with some on-delay and off-delay time of 8ms, 24ms respec-
tively.
Precision reference section
The reference voltage trimmed to
±
2% (4.9V<Vref<5.1V)
PG (Power good signal generator) section
Power good signal generator is to monitor the voltage level of power supply for safe operation of a
microprocessor.
KA3511 requires few external components to accomplish a complete housekeeping circuits for
SMPS. The KA3511 is available in a 22-pin dual in-line package.
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PDF描述 |
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| AN-4003 | Circular Connector; No. of Contacts:18; Series:MS27656; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle RoHS Compliant: No |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AN-4003 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:PC POWER SUPPLY DESIGN WITH KA3511 |
| AN4004 | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:Mounting Instructions for the MA4PK2001 & MA4PK3001 High Power PIN Diodes |
| AN40-04 | 制造商:SMC Corporation of America 功能描述:Silencer, pneumatic, 1/2PT 制造商:SMC 功能描述:Pneumatic silencer R 1/2 male thread |
| AN-4005 | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:MAFL-009272 Improved rejection circuit 5 - 1002 / 1125 - 1550 MHz |
| AN4009 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:ALARM IC SAMPLE APPLICATIONS |
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