Datasheet > iW9802

iW9802

更新时间： 2024-11-15 14:57:39

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
8页	640K
描述
100W Digital Zero Voltage Switching RapidCharge? AC/DC Controller

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iW9802 数据手册

iW9802

RapidCharge^TMAC/DC Primary-Side Digital ZVS Flyback Controller

1 Description

The iW9802 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 40W 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 iW9802 is optimized to work with Dialog’s

secondary-side controller, the iW72x, for SSR, synchronous rectiﬁer (SR) control and D+/D- based protocols support.

The iW9802/iW72x 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 iW9802

is also compatible with TL431 or third party secondary-side ICs with SSR and rapid charge protocols.

The iW9802 and iW72x chipset can support D+/D- based protocols to achieve fast and smooth CV/CC transitions upon

request by mobile devices (MD). The iW9802 and iW72x chipset can meet no-load power consumption of less than

60mW for typical 40W to 66W designs at 5V output setting.

Dialog’s innovative proprietary technology ensures that power supplies designed with the iW9802 and iW72x chipset can

achieve high eﬃciency, high accuracy voltage/current control and fast dynamic load response.

2 Features

● Adaptive quasi-resonant (QR) mode and continuous

● Supports Rapid Charge adapters applications of

conduction mode (CCM) operation at low line voltage

around 40W and above

● Built-in single-point fault protections

● Supports constant-voltage (CV) and constant-current

(CC) regulation in ﬁne steps by secondary-side

regulation (SSR)

AC line voltage brown-out

Output short-circuit

Output over-voltage

Optocoupler failure

● Dialog’s patented adaptive ZVS control minimizes

switching loss to enable high eﬃciency and low EMI

● User conﬁgurable ZVS timing to optimize performance

for diﬀerent power MOSFETs

● User programable internal over-temperature

protection (OTP) threshold for various thermal

requirements

● Adaptive multi-mode control (MMC) using PWM/

PFM/Burst modes based on input voltage and output

voltage/current improves eﬃciency across any load

and eliminates audible noise

● 10-lead SOIC package

3 Applications

● Rapid-charging AC/DC adapters for smart phones,

tablets, notebook and other portable devices

Product Summary

Rev. 1.0

24-Oct-2023

1 of 8

www.renesas.com

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中文翻译

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