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iW9809

更新时间： 2024-11-15 14:58:15
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瑞萨 - RENESAS /
页数 文件大小 规格书
7页 503K
描述
65W Digital Quasi-Resonant RapidCharge? AC/DC Controller

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iW9809 数据手册

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iW9809  
RapidChargeTM AC/DC Primary-Side Digital Quasi-Resonant Flyback  
Controller for Secondary-Side Regulation  
1 Description  
The iW9809 is a high-performance AC/DC primary-side digital flyback controller with adaptive multi-mode-control  
(MMC) working with secondary-side regulation (SSR) for applications requiring high resolution in output voltage/current  
setting. The device can support rapid charge applications such as travel adapters (TA) of 25W (5V/3A, 9V/2.77A, etc.).  
It operates in quasi-resonant switching mode and supports optional continuous conduction mode (CCM) for low line  
voltage and it uses multi-mode control (MMC) including PWM, PFM and burst mode to achieve less power loss and  
low EMI. It also provides a number of key built-in protection features. The iW9809 is optimized to work with Dialog’s  
secondary-side controller, the iW70x, for SSR, synchronous rectifier (SR) control and USB PD 3.0 w/PPS protocol  
support. The iW9809/iW70x chipset can achieve tight multi-level constant voltage (CV) and multi-level constant current  
(CC) regulation in very fine steps for rapid charge applications. With SSR digital compensation, the chipset eliminates the  
need for external loop compensation components while maintaining stability under all operating conditions.  
The iW9809 and iW70x chipset can support USB PD to achieve fast and smooth CV/CC transitions upon request by  
mobile devices (MD). The iW9809 and iW70x chipset can meet no-load power consumption of less than 20mW for a  
typical 25W design when output USB cable is detached.  
Dialog’s innovative proprietary technology ensures that power supplies designed with the iW9809 and iW70x chipset can  
achieve high efficiency, high accuracy voltage/current control and fast dynamic load response.  
2 Features  
● Built-in single-point fault protections against AC line  
voltage brown-out, output short-circuit, output over-  
voltage, and optocoupler failure  
● Supports Rapid Charge adapters applications of  
typical 25W and other power profiles  
● Supports constant-voltage (CV) and constant-current  
(CC) regulation in fine steps using secondary-side  
regulation (SSR) control  
● User programable internal OTP threshold for various  
thermal requirement  
● < 20mW no load standby power with ample margin at  
● Proprietary constant-frequency switching with quasi-  
resonant (QR) operation achieves best size, effiiciency  
and common mode noise  
230VAC when output USB cable is detached.  
● 8-lead SOIC package  
● Adaptive QR mode and optional continuous  
conduction mode (CCM) operation at low line voltage  
● Adaptive multi-mode control (MMC) using PWM/  
PFM/Burst modes based on input voltage and output  
voltage/current improves efficiency and eliminates  
audible noise  
3 Applications  
● Rapid-charging AC/DC adapters for smart phones,  
tablets and other portable devices  
Rev. 0.4 Preliminary  
Product Summary  
23-Feb-2022  
1 of 7  
www.renesas.com  
© 2022 Renesas Electronics  
1234567

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