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ME8115D7G Datasheet(PDF) 1 Page - Micronetics, Inc.

Part # ME8115D7G
Description  High-performance current mode PWM switching power supply controller designed for cost-effective AC/DC converters
PDF  15 Pages
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Manufacturer  MICRONETICS [Micronetics, Inc.]
Direct Link  http://www.micronetics.com
Logo MICRONETICS - Micronetics, Inc.

ME8115D7G Datasheet(HTML) 1 Page - Micronetics, Inc.

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ME8115
高性能电流模式 PWM 开关电源控制器,专为高性价比 AC/DC 转换器设计
概述
高性能电流模式PWM控制器,专为高性价比AC/DC转
换 器 设 计 , 在 85-265V 的 宽 电 压 范 围 内 提 供 高 达
12W(ME8115B是18W)的连续输出功率,峰值输出功率
更可达18W。优化的高合理性电路设计结合高性价比的双
极制作工艺,最大程度上节约了产品的整体成本。该电源
控制器可工作于典型的反激电路拓扑中,构成简洁的
AC/DC转换器,
IC内部启动电路被设计成一种独特的电流
吸入方式,可利用功率开关管的本身放大作用完成启动
(开关管Ic对Ib的放大),这显著地降低了启动电阻的功
率消耗,而在输出功率较小时,IC将自动降低工作频率,
从而实现了极低的待机功耗,VCC达到10V时,芯片内部
会启动过压保护,限制输出电压上升可防止光耦或反馈电
路损坏引起的输出电压过高,IC内部还提供了完善的防过
载,防饱和功能,可实时防范过载、变压器饱和、输出短
路等异常状况,提高了电源的可靠性。IC内部还集成了带
有迟滞的温度保护功能,在芯片过热时关断输出。电流限
制可由外部器件Rs设定。
特点
● 内置700V高压功率开关管
● 内置高压启动电流源,快速启动
● 内置能效处理控制,待机低于0.1W
● 内置过压欠压与短路保护功能
● 内置过载与过温保护功能
● 精确温度补偿,精确逐周期电流控制
● 低启动电流和低工作电流
● 自适应频率回转设计,EMI干扰小
● 高转换效率,满足能源之星2.0要求
● 宽压输出功率12W(ME8115B 是18W),峰值输出功率
15W(ME8115B 是20W)
● 高压输出功率15W(ME8115B 是20W),峰值输出
18W(ME8115B 是22W)
● 外围元器件少,整机成本低
应用场合
封装形式
● 电源适配器
● 8-pin DIP8
● 便携式设备充电电源
● 7-pin DIP7(B)
● DVD/DVB电源
● 电池充电器
● ATX待机电源


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