在线咨询
eetop公众号 创芯大讲堂 创芯人才网
切换到宽版

EETOP 创芯网论坛 (原名:电子顶级开发网)

手机号码,快捷登录

手机号码,快捷登录

找回密码

  登录   注册  

快捷导航
搜帖子
查看: 10941|回复: 35

Understanding Boost Power Stages in Switchmode Power Supplies

[复制链接]
发表于 2006-11-27 16:49:01 | 显示全部楼层 |阅读模式

马上注册,结交更多好友,享用更多功能,让你轻松玩转社区。

您需要 登录 才可以下载或查看,没有账号?注册

x
              TEXAS
INSTRUMENTS


Understanding Boost Power Stages
in Switchmode Power Supplies


ABSTRACT - A switching power supply consists of the power stage and the control circuit. The power stage performs the basic power conversion from the input voltage to the output voltage and includes switches and the output filter. This report addresses the boost power stage only and does not cover control circuits. The report includes detailed steady-state and small-signal analysis of the boost power stage operating in continuous and discontinuous modes. A discussion of power stage component requirements is included.

TI - Understanding Boost Power Stages in Switchmode Power Supplies.pdf

149.89 KB, 下载次数: 241 , 下载积分: 资产 -2 信元, 下载支出 2 信元

Boost Power Stages

 楼主| 发表于 2006-11-27 16:53:51 | 显示全部楼层
想从事电源管理芯片设计的同志应该下来看看,毕竟基础才是最重要的。
发表于 2007-2-6 19:38:08 | 显示全部楼层

ABSTRACT

ABSTRACT
A switching power supply consists of the power stage and the control circuit. The power
stage performs the basic power conversion from the input voltage to the output voltage
and includes switches and the output filter. This report addresses the boost power stage
only and does not cover control circuits. The report includes detailed steady-state and
small-signal analysis of the boost power stage operating in continuous and discontinuous
modes. A discussion of power stage component requirements is included.
发表于 2007-2-6 19:39:03 | 显示全部楼层
Introduction
The three basic switching power supply topologies in common use are the buck,
boost, and buck-boost. These topologies are non-isolated, i.e., the input and
output voltages share a common ground. There are however, isolated derivations
of these non-isolated topologies. The power supply topology refers to how the
switches, output inductor, and output capacitor are connected. Each topology
has unique properties, including the steady-state voltage conversion ratios, the
nature of the input and output currents, and the character of the output voltage
ripple. Another important property is the frequency response of the
duty-cycle-to-output-voltage transfer function.
The boost is a popular non-isolated power stage topology, sometimes called a
step-up power stage. Power supply designers choose the boost power stage
because the required output voltage is always higher than the input voltage, is
the same polarity, and is not isolated from the input. The input current for a boost
power stage is continuous, or non-pulsating, because the input current is the
same as the inductor current. The output current for a boost power stage is
discontinuous, or pulsating, because the output diode conducts only during a
portion of the switching cycle. The output capacitor supplies the entire load
current for the rest of the switching cycle.
This application report describes steady-state operation and gives ideal
waveforms for the boost converter in continuous and discontinuous modes. The
duty-cycle-to-output-voltage transfer function is given using the PWM switch
model.
发表于 2007-2-6 19:40:09 | 显示全部楼层
References
1. Application Report Designing With The TL5001 PWM Controller, TI Literature
Number SLVA034A.
2. Application Report Designing Fast Response Synchronous Buck Regulators
Using the TPS5210, TI Literature Number SLVA044.
3. V. Vorperian, R. Tymerski, and F. C. Lee, “Equivalent Circuit Models for
Resonant and PWM Switches,” IEEE Transactions on Power Electronics,
Vol. 4, No. 2, pp. 205-214, April 1989.
4. R. W. Erickson, Fundamentals of Power Electronics, New York: Chapman
and Hall, 1997.
5. V. Vorperian, “Simplified Analysis of PWM Converters Using the Model of the
PWM Switch: Parts I and II,” IEEE Transactions on Aerospace and Electronic
Systems, Vol. AES-26, pp. 490-505, May 1990.
6. E. van Dijk, et al., “PWM-Switch Modeling of DC–DC Converters,” IEEE
Transactions on Power Electronics, Vol. 10, No. 6, pp. 659-665, November
1995.
7. G. W. Wester and R. D. Middlebrook, “Low-Frequency Characterization of
Switched Dc-Dc Converters,” IEEE Transactions an Aerospace and
Electronic Systems, Vol. AES-9, pp. 376-385, May 1973.
8. R. D. Middlebrook and S. Cuk, “A General Unified Approach to Modeling
Switching-Converter Power Stages,” International Journal of Electronics, Vol.
42, No. 6, pp. 521-550, June 1977.
发表于 2007-2-9 00:18:59 | 显示全部楼层
1111111111
发表于 2007-7-6 20:20:59 | 显示全部楼层
另外的一個帖子裏有了!
发表于 2007-7-16 19:39:03 | 显示全部楼层
thanks very much!!
发表于 2007-7-16 19:40:55 | 显示全部楼层
55555555555555555555555
发表于 2007-8-9 14:34:42 | 显示全部楼层
好人啊,帮助
您需要登录后才可以回帖 登录 | 注册

本版积分规则

关闭

站长推荐 上一条 /1 下一条

小黑屋| 手机版| 关于我们| 联系我们| 隐私声明| EETOP 创芯网
( 京ICP备:10050787号 京公网安备:11010502037710 )

GMT+8, 2025-7-6 20:26 , Processed in 0.023758 second(s), 8 queries , Gzip On, MemCached On.

eetop公众号 创芯大讲堂 创芯人才网
快速回复 返回顶部 返回列表