WMSIC Electronic Components

MICRONE ME8329AD7G-N ME8329AD7G

ModelME8329AD7G-N
PackageDIP-7
BrandMICRONE
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
MICRONE ME8329AD7G-N
Type
MICRONE
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MICRONE
Electronic Component
ME8329AD7G-N
Electronic Component
1
Package
DIP-7
Electronic Component
AC-DC Controllers and Regulators
Electronic Component
0.81g
Electronic Component
1
Features
(CV); (UVP); (OTP); (CC); (OVP); (OCP)
Electronic Component
Electronic Component
Electronic Component
BM0227656161
Electronic Component
QR
Operating Temperature
40℃~+85℃
Operating Voltage
10V~30V
Switching Frequency
120kHz
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

ME8329AD7G-N 产品概述

ME8329AD7G-N 是 MICRONE(南京微盟)推出的一款高集成度 AC-DC 控制器与稳压器,封装为 DIP-7,面向低功耗到中等功率的离线开关电源应用。芯片集成了多重保护与控制功能,采用原边反馈(Primary-side Regulation)方式,支持恒压(CV)与恒流(CC)输出控制,适用于充电器、适配器、LED 驱动与各种辅助电源场景。

一、主要特性

  • 工作模式:准谐振(QR)控制,有利于降低开关损耗和电磁干扰,提升轻载效率。
  • 输出控制:恒压模式(CV)与恒流模式(CC),支持自动切换,适合电池充电等场景。
  • 多重保护:欠压保护(UVP)、过压保护(OVP)、过流保护(OCP)、过热保护(OTP)。
  • 启动与运行:软启动功能,抑制通电瞬间的启动冲击和涌流。
  • 反馈方式:原边反馈(无需或减少光耦器件),简化系统设计与降低成本。
  • 电气与频率特性:内部开关晶体管耐压 650V,工作电压(VCC)范围 10V~30V,开关频率典型值 120kHz。
  • 热特性与功耗:工作温度范围 -40℃~+85℃,耗散功率 Pd = 1.7W。
  • 封装:DIP-7,方便手工样板制板与小批量封装测试。

二、功能与工作机制要点

ME8329AD7G-N 采用准谐振(QR)控制策略,在开关变换器的谷值进行触发开关,显著降低开关应力与开关损耗,从而改善效率并抑制 EMI 峰值。原边反馈通过辅助绕组或直接采样初级电流/电压实现输出调节,消除了常规设计中对光耦的依赖,适合对成本与空间敏感的设计。

软启动通过限制初期占空比或开关频率的方式逐步建立输出电压/电流,避免浪涌电流和输出过冲。内置的多项保护机制(UVP/OVP/OCP/OTP)在异常工况下可靠限制功率器件与负载,提升系统可靠性与安全性。

三、典型应用场景

  • 手机/平板/便携设备充电适配器(含恒流/恒压充电管理)
  • 小功率桌面/家电开关电源(待机与主电源)
  • LED 恒流/恒压驱动(小功率灯具、指示灯)
  • 工业辅助电源与监控电源模块
  • 任何需要低成本、简化反馈电路的离线电源设计

四、设计注意事项与推荐做法

  • 原边反馈校准:由于采用原边反馈,需确保辅助绕组或采样电路的比例精确并覆盖负载与线路变化范围,必要时通过误差补偿网络优化负载调节精度与瞬态响应。
  • VCC 供电与启动:VCC 工作范围 10V~30V,应设计可靠的启动电路(高压启动或辅助绕组)并加稳压/滤波。注意软启动电容与限制启动电流元件的选择。
  • 开关器件与钳位:尽管内部晶体管耐压 650V,建议仍配合合理的 RCD 钳位、瞬态抑制和吸收网络以限制尖峰电压并保护器件。
  • 热管理:DIP-7 封装热阻较大,Pd=1.7W 表明芯片在高功率或高环境温度下需良好散热设计,增加铜箔面积或外部散热器,注意布局避开热敏元件。
  • EMI/EMC:QR 模式有利于降低 EMI,但仍需在输入端增加差共模滤波、合理布线和接地处理,变压器与走线布局对抑制辐射与传导干扰尤为关键。
  • 测试与保护门槛:在初期样机验证阶段,设定合理的 OCP/OVP/OTP 门槛并留测试点监测,确保保护逻辑在极端工况下可靠触发与恢复。

五、优点与工程价值

  • 集成度高、外部元件少:节省 BOM 成本与体积,适合批量生产。
  • 原边反馈减少光耦依赖:简化隔离反馈路径,降低漂移问题(但需注意初级/辅助绕组的精度)。
  • QR 控制提升效率与 EMI 性能:对轻载效率和电磁兼容性有明显优化。
  • 完备保护机制提高可靠性:适合对安全性与寿命有要求的消费与工业应用。

总结:ME8329AD7G-N 是一款为低、中功率离线电源设计优化的控制器,结合准谐振工作、原边反馈和全面保护功能,可在保证可靠性的同时降低系统复杂度与成本。适当的热设计、反馈校准与 EMI 抑制是获得最佳性能的关键。

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