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日前,全球功率半导体和管理方案领导厂商国际整流器公司推出IRS2548D开关模式电源 (SMPS) 控制IC,适用于高功率发光二极管 (LED) 照明的节能应用,包括LED路灯照明、体育场馆照明及舞台照明。
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<P> 日前,全球功率半导体和管理方案领导厂商国际整流器公司推出IRS2548D开关模式<A href="http://www.cps800.com/news/24644.htm"><STRONG>电源</STRONG></A> (SMPS) 控制IC,适用于高功率发光二极管 (LED) 照明的节能应用,包括LED路灯照明、体育场馆照明及舞台照明。 </P> <P align=center><IMG src="/uploadfile/newspic/2011/201104/20110419153202113.jpg" border=0></P> <P> IRS2548D把功率因数校正(PFC)和半桥式驱动器集成在单一个IC,为40V/1.3A 高亮度发光二极管(HBLED)负载提供高达88%的效率。与功率水平超过60W的同类型反激式 (Flyback) 转换器解决方案相比,IRS2548D能实现更高的效率。 </P> <P> IR 亚太区销售副总裁潘大伟表示:“新款IRS2548D通过把两个控制级集成在单个IC中,为LED电源提供了集成式解决方案,不但能够简化设计,而且有助降低整体系统成本,同时显著节省能源。” </P> <P> 新器件能实现脉冲宽度调制 (PWM) ,可以通过调暗使光输出降低至低于2%,并提供一系列保护功能,包括可编程PFC和半桥过流保护、锁存免疫功能和ESD保护。IRS2548D的功能还包括可变频率振荡器、1.6us内部固定死区时间、内部自举MOSFET、内置于VCC的15.6V齐纳<A href="http://www.cps800.com/news/24417.htm"><STRONG>二极管</STRONG></A>钳位,以及微功率启动 (250μA) 。 </P> <P> <STRONG>产品规格</STRONG> </P> <P> <TABLE class=MsoNormalTable style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; MARGIN: auto auto auto 5.4pt; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none; BORDER-COLLAPSE: collapse; mso-table-layout-alt: fixed; mso-border-alt: solid windowtext .5pt; mso-yfti-tbllook: 480; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid windowtext; mso-border-insidev: .5pt solid windowtext" cellSpacing=0 cellPadding=0 border=1> <TBODY> <TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes"> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; WIDTH: 63.8pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt" vAlign=top width=85> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center; mso-layout-grid-align: auto" align=center><FONT size=3><B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-language: ZH-CN">器件编号</SPAN></B><B><SPAN lang=EN-US style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></B></FONT></P></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ffffff; WIDTH: 42.55pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt" vAlign=top width=57> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center; mso-layout-grid-align: auto" align=center><FONT size=3><B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-language: ZH-CN">封装</SPAN></B><B><SPAN lang=EN-US style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体"><o:p></o:p></SPAN></B></FONT></P></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ffffff; WIDTH: 63.75pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt" vAlign=top width=85> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center; mso-layout-grid-align: auto" align=center><FONT face="Times New Roman"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 11pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">V</SPAN></B><B style="mso-bidi-font-weight: normal"><SUB><SPAN lang=EN-US style="FONT-SIZE: 13pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">OFFSET</SPAN></SUB></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 11pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN"><SPAN style="mso-spacerun: yes"><FONT size=3> </FONT></SPAN>(V)</SPAN></B><B><SPAN lang=EN-US style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN"><o:p></o:p></SPAN></B></FONT></P></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ffffff; WIDTH: 2cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt" vAlign=top width=76> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center; mso-layout-grid-align: auto" align=center><FONT face="Times New Roman"><B><SPAN lang=EN-US style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN"><FONT size=3>V</FONT></SPAN></B><B><SUB><SPAN lang=EN-US style="FONT-SIZE: 13pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">OUT</SPAN></SUB></B><B><SPAN lang=EN-US style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>(V)<o:p></o:p></FONT></SPAN></B></FONT></P></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ffffff; WIDTH: 92.15pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt" vAlign=top width=123> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center; mso-layout-grid-align: auto" align=center><FONT face="Times New Roman"><B><SPAN lang=EN-US style="FONT-SIZE: 11pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">I</SPAN></B><B><SUB><SPAN lang=EN-US style="FONT-SIZE: 13pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">O+</SPAN></SUB></B><B><SPAN lang=EN-US style="FONT-SIZE: 11pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">/ I</SPAN></B><B><SUB><SPAN lang=EN-US style="FONT-SIZE: 13pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">O-</SPAN></SUB></B><B><SPAN lang=EN-US style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN"><FONT size=3> (</FONT></SPAN></B></FONT><FONT size=3><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-language: ZH-CN; mso-ansi-language: EN-GB">典型</SPAN></B><B><SPAN lang=EN-US style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN"><FONT face="Times New Roman">)<o:p></o:p></FONT></SPAN></B></FONT></P></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ffffff; WIDTH: 3cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt" vAlign=top width=113> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center; mso-layout-grid-align: auto" align=center><FONT face="Times New Roman"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 11pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">T</SPAN></B><B style="mso-bidi-font-weight: normal"><SUB><SPAN lang=EN-US style="FONT-SIZE: 13pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">ON/OFF</SPAN></SUB></B><B><SPAN lang=EN-US style="FONT-SIZE: 13pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN"> </SPAN></B><B><SPAN lang=EN-US style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN"><FONT size=3>(</FONT></SPAN></B></FONT><FONT size=3><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-language: ZH-CN; mso-ansi-language: EN-GB">典型</SPAN></B><B><SPAN lang=EN-US style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN"><FONT face="Times New Roman">)<o:p></o:p></FONT></SPAN></B></FONT></P></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ffffff; WIDTH: 64pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt" vAlign=top width=85> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center; mso-layout-grid-align: auto" align=center><FONT size=3><B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-language: ZH-CN">死区时间</SPAN></B><B><SPAN lang=EN-US style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体"><o:p></o:p></SPAN></B></FONT></P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center; mso-layout-grid-align: auto" align=center><FONT size=3><B><SPAN lang=EN-US style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN"><FONT face="Times New Roman"><SPAN style="mso-spacerun: yes"> </SPAN>(</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-language: ZH-CN; mso-ansi-language: EN-GB">典型</SPAN></B><FONT face="Times New Roman"><B><SPAN lang=EN-US style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">)</SPAN></B><B><SPAN lang=EN-US style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体"><o:p></o:p></SPAN></B></FONT></FONT></P></TD></TR> <TR style="mso-yfti-irow: 1; mso-yfti-lastrow: yes"> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ffffff; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; WIDTH: 63.8pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=85> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: auto"><FONT size=3><FONT face="Times New Roman"><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">IRS2548D</SPAN><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体"><o:p></o:p></SPAN></FONT></FONT></P></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ffffff; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ffffff; WIDTH: 42.55pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=57> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center; mso-layout-grid-align: auto" align=center><FONT size=3><FONT face="Times New Roman"><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">SO-14</SPAN><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体"><o:p></o:p></SPAN></FONT></FONT></P></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ffffff; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ffffff; WIDTH: 63.75pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=85> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center; mso-layout-grid-align: auto" align=center><FONT size=3><FONT face="Times New Roman"><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">600</SPAN><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体"><o:p></o:p></SPAN></FONT></FONT></P></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ffffff; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ffffff; WIDTH: 2cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=76> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center; mso-layout-grid-align: auto" align=center><FONT size=3><FONT face="Times New Roman"><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">VCC</SPAN><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体"><o:p></o:p></SPAN></FONT></FONT></P></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ffffff; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ffffff; WIDTH: 92.15pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=123> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center; mso-layout-grid-align: auto" align=center><FONT size=3><FONT face="Times New Roman"><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">500mA/500mA</SPAN><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体"><o:p></o:p></SPAN></FONT></FONT></P></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ffffff; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ffffff; WIDTH: 3cm; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=113> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center; mso-layout-grid-align: auto" align=center><FONT size=3><FONT face="Times New Roman"><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN">120ns/50ns</SPAN><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体"><o:p></o:p></SPAN></FONT></FONT></P></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ffffff; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ffffff; WIDTH: 64pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=85> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: normal; TEXT-ALIGN: center; mso-layout-grid-align: auto" align=center><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-fareast-language: ZH-CN"><FONT face="Times New Roman" size=3>1.6us</FONT></SPAN><SPAN lang=EN-US style="COLOR: black; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体"><o:p></o:p></SPAN></P></TD></TR></TBODY></TABLE></P> <P> 新器件所采用的环保材料既不含铅,也符合电子产品有害物质管制规定 (RoHS) 。■</P>