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參數(shù)資料
| 型號： | AS80M1801 |
| 廠商： | Alliance Semiconductor Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | EMI Reduction IC for Switching Power Supplies |
| 中文描述： | 電磁干擾降低集成電路開關(guān)電源 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 28K |
| 代理商： | AS80M1801 |
AS80M1800/1801
EMI Reduction IC for Switching Power Supplies
Notice: The information in this document is subject to change without notice.
January 2003
Alliance Semiconductor
2575 Augustine Drvie Santa Clara, CA 95054 Tel: 408.855.4900 Fax: 408.855.4999 www.alsc.com
Overview
AS80M1800
and
AS80M1801
are programmable spread
spectrumfrequency modulators designed for Switched
Mode Power Supply (SMPS) applications. These devices
work as companion ICs to the pulse width modulation
(PWM) controller. As such, they can be used as a simple
drop-in solution between the PWMcontroller and
MOSFET to tackle most EMI problems in the SMPS.
The
AS80M1800
and
AS80M1801
reduce electro-
magnetic interference (EMI) by applying spread spectrum
modulation to the PWMgate drive signal at the gate of the
power MOSFET. Gate drive modulation significantly
reduces the conducted and radiated emssions usually
generated by di/dt and dv/dt switching in a SMPS.
These are the first general purpose EMI reduction ICs
specifically designed for use in SMPS systems. No other
manufacturer to date has a device that can frequency
modulate a PWMtrain and still maintain the input PWM
content. They can be used in popular DC/DC converter,
and AC/DC inverter and DC/AC inverters designs.
Besides providing EMI reduction functionality, the
AS80M1800
and
AS80M1801
provide additional features
that extend the capabilities of the power system
Simplified Application Diagram
PWM
Controller
AS80M1800
AS80M1801
SS Modulated
Gate Drive
Current Sense
PWM_in
Current Sense
Vout
I_peak
MOSFET
Sense
Resistor
From Regulated Output
Boost/Flyback configuration
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS80M2516A | dual phase lock loop clock chip |
| AS80SSTVF16857 | DDR 14-Bit Registered Buffer |
| AS80SSTVF16857-48TR | DDR 14-Bit Registered Buffer |
| AS80SSTVF16857-48TT | DDR 14-Bit Registered Buffer |
| AS80SSTVF16857-48VR | DDR 14-Bit Registered Buffer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS80M2516A | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:dual phase lock loop clock chip |
| AS80SSTVF16857 | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:DDR 14-Bit Registered Buffer |
| AS80SSTVF16857-48TR | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:DDR 14-Bit Registered Buffer |
| AS80SSTVF16857-48TT | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:DDR 14-Bit Registered Buffer |
| AS80SSTVF16857-48VR | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:DDR 14-Bit Registered Buffer |
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