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提高电池和USB电源之间的转换开关

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摘要:本应用笔记介绍了电路之间无缝切换电池供电和USB供电,以最小的电路。该设计采用一个升压转换器架构,在一个LDO ( MAX1792 )之间连接的USB电源线和一个升压转换器的输出( MAX1795/MAX1796/MAX1797 ) 。

Maxim > App Notes > Circuit Protection Interface Circuits Power-Supply Circuits

Keywords: LDO linear regulators, step-up converters, boost converters, USB power, battery operation, hot Sep 16, 2009
swapping

APPLICATION NOTE 4445
Boost Converter Switches Between Battery and USB Power
By: Kazuma Akabane


Abstract: This application note presents a circuit that switches seamlessly between battery power and USB
power with minimal circuitry. The design uses a step-up converter architecture in which an LDO (the
MAX1792) is connected between the USB power line and the output of a step-up converter (the MAX1795/
MAX1796/MAX1797).

This design idea appeared in the November 1, 2006 issue of EE Times Japan, and was posted on the EE Times
US website on November 21, 2006.

Virtually all PCs n……
标签:MaximLDOlinearregulatorsstep-upconvertersboostconvertersUSBpowerbatteryoperationhotswapping
提高电池和USB电源之间的转换开关
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