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iW1677号
iW1677号
初准™ SOT-23封装的离线数字PWM控制器
A team of engineers is ready to answer your questions
< 20mW standby power
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初准™数字一次侧控制，省去了二次侧光耦的需要，减少了元件数量和解决方案成本。
iW1677集成了一个有源启动电路，允许在不影响工作电流消耗的情况下快速开启。该设备很容易满足美国能源部的外部电源标准和欧盟的行为准则，第5版，二级标准，空载功耗低于20mW。其他特性包括Dialog的专有EZ-EMI™technology, quasi-resonant control for optimal efficiency at heavy loads, cable and connector voltage drop compensation options, full protection from fault conditions and tiny packaging.
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)
- Less than 20mW No-Load Power Consumption
- Low 1.7uA Start-Up Current
- Active Start-Up Circuit to Reduce Turn-on Time
- 72kHz PWM Switching Frequency
- Voltage Offset Compensation for Voltage Loss in Cables and Connectors (4 Options)
Features
- 初准™ -一次侧控制，无需光耦
- Quasi-resonant Control for Optimal Efficiency
- EZ-EMI™ Design to Easily Meet Global EMI Specifications
- 快速动态负载调节
- 完全防止故障
- 超温保护
- 输出过压、过流
- Input Undervoltage Protection
- 感测电阻短路保护
亚博国际官网平台网址
- 电源适配器的便携式Electronics
- 消费电子电源
- 线性交直流电源更换
方块图
Typical applications diagram
功能块指令图
资源
| 日期 | Version | |
|---|---|---|
| iW1677号Datasheet | 03/06/2016 | 版次。2 |
| 日期 | Version | |
|---|---|---|
| What is Digital Power White Paper |
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