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參數資料
| 型號： | HIP5060 |
| 廠商： | Intersil Corporation |
| 英文描述： | () |
| 中文描述： | （） |
| 文件頁數： | 1/1頁 |
| 文件大小： | 32K |
| 代理商： | HIP5060 |
4-
1
TM
Copyright
Intersil Corporation 1998
HIP5060 Family of Current Mode Control ICs
Enhance 1MHz Regulator Performance
Abstract
The trend towards distributed power grows and so does the
demand for compact, efficient, high frequency, low EMI
power suppiies(1). This application note addresses this need
by showing an example of how an 80W, 1MHz supply can be
implemented with a single, current controlled PWM power IC
that contains both a DMOS power transistor and a
sophisticated control loop that protects both the IC and the
load from a variety of load and fault conditions. SEPIC
(Single-Ended Primary Inductance Converter) supply
topology is shown. This topology has the advantage of AC
coupling the load, with the accrued load protection not
usually found in typical “buck” types of topologies.
Techniques that are required to obtain high efficiency, high
frequency power supplies are discussed. Methods of
achieving low EMI at 1MHz are also addressed.
Introduction
Power control is expanding and moving with newer
approaches that provide the designer with even more
challenges. Distributed power is becoming the answer for
systems where local faults will not necessarily shut down an
entire system. This application note describes a family of ICs
Intersil. IBM chose this advanced system approach for their
new series of personal computers. This approach is in
contrast to the common practice of using just one central
power supply in these types of computers. Economies in
terms of cooling requirements with the consequential
elimination of large cooling fans and associated noise
provided added incentive(2). Figure 1 shows the basic
approach to a distributed power system, and Figure 2 shows
a schematic diagram of the device in a 5.1V supply
application.
FIGURE 1. AN EXAMPLE OF A DISTRIBUTED POWER
SYSTEM
FIGURE 2. SCHEMATIC DIAGRAM OF THE HIP5060 IN A 5.1V SUPPLY
Application Note
OBSOLETE PRODUCT
August 1998
AN9212.2
Authors: Robert G. Hodgins and Hal Wittlinger
No Recommended Replacement
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相關代理商/技術參數 |
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