DC-DC转换器

 
<p class="MsoNormal"><span lang="EN-US"><a href="http://www.xppowerchina.com/"><span style="FONT-FAMILY: 'Verdana','sans-serif'; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-fareast-font-family: 宋体">DC-DC</span><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><span lang="EN-US">转换器</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast">为转变输入电压后有效输出固定电压的电压转换器。</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 'Arial','sans-serif'; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt">DC/DC</span><span style="COLOR: black; FONT-FAMILY: 宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast">转换器分为三类：升压型</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 'Arial','sans-serif'; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt">DC/DC</span><span style="COLOR: black; FONT-FAMILY: 宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast">转换器、降压型</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 'Arial','sans-serif'; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt">DC/DC</span><span style="COLOR: black; FONT-FAMILY: 宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast">转换器以及升降压型</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 'Arial','sans-serif'; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt">DC/DC</span><span style="COLOR: black; FONT-FAMILY: 宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast">转换器。根据需求可采用三类控制。</span><span lang="EN-US"><a href="http://www.xppowerchina.com/"><span style="FONT-FAMILY: 'Verdana','sans-serif'; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt; mso-fareast-font-family: 宋体">AC-DC</span><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><span lang="EN-US">电源</span></span></a></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri; mso-fareast-font-family: 宋体; mso-ascii-theme-font: minor-latin; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-latin">，</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 'Arial','sans-serif'; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt">PWM</span><span style="COLOR: black; FONT-FAMILY: 宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast">控制型效率高并具有良好的输出电压纹波和噪声。</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 'Arial','sans-serif'; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt">PFM</span><span style="COLOR: black; FONT-FAMILY: 宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast">控制型即使长时间使用，尤其小负载时具有耗电小的优点。</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 'Arial','sans-serif'; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt">PWM/PFM</span><span style="COLOR: black; FONT-FAMILY: 宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast">转换型小负载时实行</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 'Arial','sans-serif'; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt">PFM</span><span style="COLOR: black; FONT-FAMILY: 宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast">控制，且在重负载时自动转换到</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 'Arial','sans-serif'; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt">PWM</span><span style="COLOR: black; FONT-FAMILY: 宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast">控制。目前</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 'Arial','sans-serif'; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt">DC-DC</span><span style="COLOR: black; FONT-FAMILY: 宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast">转换器广泛应用于手机、</span><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 'Arial','sans-serif'; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt">MP3</span><span style="COLOR: black; FONT-FAMILY: 宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast">、数码相机、便携式媒体播放器，</span><span lang="EN-US"><a href="http://www.xppowerchina.com/medical1.php"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Verdana; mso-hansi-font-family: Verdana; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt"><span lang="EN-US">医疗电源</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; LETTER-SPACING: 0.4pt; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast">等产品中。</span></p>

小编有相关电路图吗?有的话，传几张，尤其是大功率升压的。小弟急需

好啊

不会看啊，若有相关电路传过来几个，学学