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［整理］control loop cook book 2006-07-03 01:19:34
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［原创］Mixed IC test and merasurement 2006-06-22 01:41:14
this is a book of Mixed signal IC test and measurement.1150953029.part1.rar1150953335.part2.rar1150953654.part3.rar1150953952.part4.rar1150954221.part5.rar1150954561.part6.rar1150954706.part7.rar
［原创］DC-DC buck converter wave 2006-06-21 11:38:20
我实际测试了一些DC－DC转换时的波形，供大家学习参考，也欢迎提问
1150861083.doc
1150861083.doc
［整理］First Courses on Power Electronic 2003版 2006-06-17 10:57:40
［整理］Boost Converter 2006-06-16 09:57:30
Function principals:
The transistor works as a switch which is turned on and off by a pulse-width-modulated control voltage. The ratio between on-time and the period t1/T is called the Duty Cycle.
For the following analysis it will be assumed that the transistor is simplified as an ideal switch and the diode has no forward voltage drop. In the program itself, the diode will take into account a forward voltage drop VF = 0.7V.
During the on-time of the transistor, the voltage across L is equal to Vin and the current IL increases linearly. When the …
［整理］DC to DC 类型 2006-06-16 09:42:48
［整理］Buck Converter 2006-06-16 09:27:59
Function principals
The transistor works as a switch which is driven by a high frequency pulse-width-modulated control voltage. The switch is turned on and off by the pulse-width-modulated control voltage. The ratio between on-time and the period t1/T is called the Duty Cycle.
For the following analysis it will be assumed that the transistor is simplified as an ideal switch and the diode has no forward voltage drop. In the program itself, the diode will take into account a forward voltage drop VF = 0.7V.
During the on-time of the transistor, the volta…
The transistor works as a switch which is driven by a high frequency pulse-width-modulated control voltage. The switch is turned on and off by the pulse-width-modulated control voltage. The ratio between on-time and the period t1/T is called the Duty Cycle.
For the following analysis it will be assumed that the transistor is simplified as an ideal switch and the diode has no forward voltage drop. In the program itself, the diode will take into account a forward voltage drop VF = 0.7V.
During the on-time of the transistor, the volta…
［整理］pcb 相关资料 2006-05-29 11:56:00
pcb制造工艺1148874848.rar
［转载］白光LED驱动器的选择策略和设计实例 2006-05-19 11:06:58
本文针对如何选择正确的白光LED驱动器，介绍了电感式驱动器和电荷泵驱动器、它们的局限以及如何权衡考虑。作者还讨论了如何评估白光LED驱动器的典型特性，并提供了外部元器件选择指导以及实际的设计范例和布局考虑。
今日的许多便携式消费电子产品都有显示屏幕，例如移动电话、PDA和MP3播放机等，虽然屏幕的种类和大小通常是根据应用决定，但设计工程师必须负责为它设计电源和背光电路。白光LED是便携式消费电子产品目前最常采用的背光方案选择。
驱动白光LED的主要目标是产生正向电流通过器件，这可采用恒压源或恒流源来实现。图1是成本最低的解决方案，它将白光LED串联一个镇流电阻(RB)，再于电路的两端加上恒压源。然而这…
今日的许多便携式消费电子产品都有显示屏幕，例如移动电话、PDA和MP3播放机等，虽然屏幕的种类和大小通常是根据应用决定，但设计工程师必须负责为它设计电源和背光电路。白光LED是便携式消费电子产品目前最常采用的背光方案选择。
驱动白光LED的主要目标是产生正向电流通过器件，这可采用恒压源或恒流源来实现。图1是成本最低的解决方案，它将白光LED串联一个镇流电阻(RB)，再于电路的两端加上恒压源。然而这…
［原创］电源基本原理（E） 2006-04-19 01:32:48
1。Passive ComponentsPassive Components.pdf
［原创］不同公司的CCFL DATASHEET 2006-04-12 04:21:22
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