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<20MW备用电源
The iW1677 is a high performance AC/DC controller designed to drive a low-cost BJT power switch in peak current mode PWM flyback power supplies up to 5W. Ideal for power adapters for smartphones, the iW1677 integrates Dialog’s PrimAccurate™ digital primary-side control, eliminating the need for the secondary-side optocoupler, reducing component count and solution cost.
IW1677集成了一个主动启动电路，允许快速接通而不会影响操作电流消耗。该器件易于满足美国DOE的外部电源标准和欧盟的行为准则，第5版，第2层标准，无负载功耗小于20mW。附加功能包括对话的专有EZ-EMI™技术，准谐振控制，用于厚重负载，电缆和连接器电压降补偿选项，完全保护故障条件和微小的包装。
Features
符合外部电源的拟议强制性联邦效率标准1
Intrinsically Low Noise Solution - No Audible Noise Over Entire Operating Range
Easily Meets Energy-Star® AC/DC Power Supply Efficiency Specs (Rev 2.0)
- 小于20MW无负荷功耗
低1.7UA启动电流
激活启动电路，以减少接通时间
72KHz PWM开关频率
Voltage Offset Compensation for Voltage Loss in Cables and Connectors (4 Options)
PrimAccurate™ - Primary-Side Control, No Opto-Coupler Needed
准谐振控制以获得最佳效率
EZ-EMI™ Design to Easily Meet Global EMI Specifications
Fast Dynamic Load Regulation
Fully Protected from Fault Conditions
- 过温保护
- Output Over-Voltage and Over-Current
- 输入欠压保护
- Sense-Resistor Short Circuit Protection
雷竞技安卓下载
便携式电子设备的电源适配器
消费电子电源
线性AC / DC电源更换
Block Diagrams
典型的应用程序图雷竞技安卓下载
功能块Dirgram.
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