iW1770

Off-line digital quasi-resonant PWM controller with peak power operation

The iW1770 offers a compact solution for power supplies that need to provide short bursts of output power up to 60W, without oversizing the power system board components and cost. With an average output up to 40W, the iW1770 adds a second, higher peak current limit, allowing power supplies to provide a momentary peak current pulse from the output without entering constant current mode. This optimizes adapter cost and size by enabling a much higher peak output power, while maintaining the same external components used for the lower, nominal system output power.

IW1770符合美国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50MW，同时符合主动模式效率要求。其他功能包括快速动态负载响应（DLR），以及全套保护功能，包括输出过电流，过电压和短路保护。

IW1770还采用了对话框的SmartDefender™智能打嗝技术，以帮助在电缆和连接器中介入软短路。

ADiaSIM^TM值simulation model is available for the iW1770. For more information and where to download, please visit theDiaSIM^TM值page.

40W average, 60W peak output power for AC/DC power supplies

• No increase in component size to accommodate peak output power

Meets DoE External Power Supply and EU Code of Conduct, Version 5, Tier 2 Standards

• Less than 50mW No-Load Power Consumption

Active Start-Up - Reduces Turn-on Time without Impacting No-load Power Consumption

High Nominal Output Power : 15W to 40W

可选电缆滴补偿：0mV，75mV，150mV，300mV，450mV

• Selectable via single resistor

归因于^TM值- Primary-Side Control, No Optocoupler Needed

自适应多模PWM / PFM控制，用于跨负载范围的最佳效率

No Audible Noise Over Entire Operating Range

EZ-EMITM设计可轻松满足全球EMI规范

快速动态载荷响应

SmartDefender™ Smart Hiccup Technology

• Helps Address Soft-Shorts in Cables, Connectors without Latching Off
• Helps Protect Cables and Connectors from Excessive Heat and Damage by Reducing Average Power During Short Circuit by at Least 50%

完全免受故障条件的影响

• Over-Voltage/Over-Temperature Protection
• Output Short Circuit
• 感测电阻短路保护

网络设备，打印机，家用电子产品

Ultrabook电源

通用输入AC / DC适配器（15W-40W）

Model Available!

交直流转换电视：针对峰值功率还是平均功率？