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iW9801

更新时间： 2024-11-15 14:58:15
品牌 Logo 应用领域
瑞萨 - RENESAS /
页数 文件大小 规格书
7页 526K
描述
100W Digital Zero Voltage Switching RapidCharge? AC/DC Controller

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iW9801 数据手册

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iW9801  
RapidChargeTM AC/DC Primary-Side Digital ZVS Flyback Controller  
1 Description  
The iW9801 is a high-performance AC/DC primary-side digital flyback controller with advanced zero-voltage-switching  
(ZVS) and adaptive multi-mode-control (MMC) working with secondary-side regulation (SSR) for applications requiring  
high power density and high resolution in output voltage/current setting. The device can support rapid charge  
applications such as travel adapters (TA) of 25W and above. It operates under multi-mode control (MMC) including  
PWM, PFM and burst mode with main switch ZVS turn-on at high line voltage to achieve less switching loss and low  
EMI. It also provides a number of key built-in protection features.  
The iW9801 is optimized to work with Dialog’s secondary-side controller, the iW70x, for SSR, synchronous rectifier (SR)  
control and USB PD 3.0 with PPS protocol support. The iW9801/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 iW9801 and iW70x chipset can support USB PD 3.0 with PPS to achieve fast and smooth CV/CC transitions upon  
request by mobile devices (MD). The iW9801 and iW70x chipset can meet no-load power consumption of less than  
20mW for a typical 25W to 45W design when the output USB cable is detached.  
Dialog’s innovative proprietary technology ensures that power supplies designed with the iW9801 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 USB PD travel adapter (TA) applications of  
35W and above  
● Supports constant-voltage (CV) and constant-current  
(CC) regulation in fine steps by secondary-side  
regulation (SSR)  
● Optional user programable internal over-temperature  
protection (OTP) threshold for various thermal  
requirement  
● Dialog’s patented adaptive ZVS control enables high  
efficiency and low EMI  
● < 20mW no load standby power for typical 25W to  
45W designs at 230VAC when output USB cable is  
detached  
● User configurable ZVS timing to optimize performance  
for different power devices  
● AC unplug detection and X-capacitor discharge  
● Adaptive multi-mode control (MMC) using PWM/  
PFM/Burst modes based on input voltage and output  
voltage/current improves efficiency and eliminates  
audible noise  
control  
● 10-lead SOIC package  
3 Applications  
● Rapid-charging AC/DC adapters for smart phones,  
tablets and other portable devices  
Product Summary  
Rev. 1.5  
16-Nov-2022  
1 of 7  
www.renesas.com  
© 2022 Renesas Electronics  
1234567

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