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iW636-00

更新时间： 2024-11-15 00:55:15
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AC/DC Secondary-Side Controller for Qualcomm

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iW636-00 数据手册

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iW636  
AC/DC Secondary-Side Controller for Qualcomm® Quick ChargeTM 3.0  
USB Interface  
1 Description  
The iW636 is an AC/DC secondary-side controller for USB interface supporting Qualcomm Quick Charge 3.0 (QC3.0)  
technology and secondary-to-primary communication protocol, to enable rapid charging of QC3.0/QC2.0-enabled  
mobile devices (MDs). The iW636 resides on the secondary side of an AC/DC power supply and allows the adapter  
to be configured for multi-level output voltages from 3.6V to 12V in 200mV increments, depending on the voltage  
requested by the MD. It can be used in Dialog’s primary-side controlled AC/ DC systems to achieve fast voltage  
transition, low no-load power consumption, and fast dynamic load response.  
The iW636 implements Dialog’s proprietary secondary-to-primary digital communication technique. When paired with  
Dialog’s primary-side iW1782 controller, the iW636 eliminates the discrete decoders on the primary side, simplifying  
system designs. It uses one opto-coupler to transmit all the necessary information for rapid charging, including output  
voltage requests, output current limits, output voltage undershoot, output over-voltage, and fault and reset signals. It  
also has a built-in opto-coupler LED driver to minimize the bill of material cost.  
The iW636 and iW1782 provide double-layer cable protection. On the secondary side, the iW636 incorporates Dialog’s  
proprietary D+/D- over-voltage protection to address VBUS D+/D- soft shorts. On the primary side, the iW1782 uses  
Dialog’s SmartDefenderTM advanced hiccup technology to reduce the average output power during soft shorts  
without latch.  
Dialog’s innovative, proprietary technology ensures that power supplies designed with the iW636 and iW1782  
can provide multi-level output voltage configuration, with user-selected various output current limit combinations.  
Additionally, the chipset can achieve <10mW no-load power consumption at 5V, 2A output setting and fast dynamic  
load response in typical AC/DC rapid charge adapter designs.  
2 Features  
● Supports Qualcomm® Quick ChargeTM 3.0 technology  
High Voltage Dedicated Charging Port (HVDCP) to  
provide VBUS from 3.6V to 12V in 200mV increments  
● Adaptive OVP/UV detection for most VBUS levels  
● Backward compatible with QC2.0 and USB Battery  
Charging Specification Revision 1.2 (USB BC1.2)  
● Double-layer cable protection:  
● Pin-to-pin compatible with iW626  
x
x
Secondary side (iW636): Proprietary D+/D- over-  
voltage protection (OVP) addresses VBUS D+/D-  
soft shorts  
● Programmable active fast discharge from a high  
voltage VBUS level to 5V at MD unplug or upon  
request with built-in switch or external switch  
Primary side (iW1782): SmartDefender™ smart  
hiccup technology reduces average output power  
at fault conditions without latch  
● Normally OFF state with <150µA cut-off current  
during 5V steady-state operation to achieve <10mW  
overall system no-load power consumption  
● Proprietary secondary-to-primary digital  
communication eliminates discrete decoders in the  
primary side and simplifies system designs  
● Wide operating voltage range from 3V to 16V  
● Built-in opto-coupler LED driver with minimum driving  
current of 2mA  
● Single opto-coupler transmits all information for  
rapid charge: output voltage requests, output current  
limits, output voltage undershoot (UV), over-voltage  
protection (OVP), and fault and reset signals  
● 6-lead SOT-23 package  
3 Applications  
● Rapid-charging AC/DC adapters for smart phones,  
tablets, and other portable devices  
Qualcomm® Quick ChargeTM 3.0 is a product of Qualcomm Technologies, Inc.  
25-May-2016  
Product Summary  
Rev. 1.2  
www.dialog-semiconductor.com  
1 of 7  
© 2016 Dialog Semiconductor  
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