iW629 Product Summary
AC/DC Secondary-Side Controller for Qualcomm® Quick ChargeTM 2.0
USB Interface with Soft-Short Protection
1.0 Features
2.0 Description
● Supports Qualcomm® Quick ChargeTM 2.0 (QC2.0)
technology High Voltage Dedicated Charging Port
(HVDCP)
The iW629 is an AC/DC secondary-side controller compatible
with the Qualcomm Quick Charge 2.0 USB interface and
secondary-to-primary communication protocol, allowing rapid
chargingofQC2.0-enabledmobiledevices.TheiW629resides
on the secondary side of an AC/DC power supply and allows
the adapter to be configured for multi-level output such as 5V
and 9V, depending on the voltage requested by the mobile
device. 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.
● Double-layer cable protection:
x
x
Secondary side (iW629): Proprietary D+/D- over-
voltage protection (OVP) addresses VBUS D+/D- soft
shorts
Primary side (iW1780): SmartDefender™ smart
hiccup technology reduces average output power at
fault conditions without latch
The iW629 implements Dialog’s proprietary secondary-to-
primary digital communication technique. When paired with
Dialog’s primary-side iW1780 controller, the iW629 eliminates
the discrete decoders in the primary side, simplifying system
designs. It uses one opto-coupler to transmit all 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.
● Proprietary secondary-to-primary digital communication
eliminates discrete decoders in the primary side and
simplifies system designs
● Single opto-coupler transmits all information for rapid
charge: output voltage requests, output current limits,
output voltage undershoot, over-voltage protection,
and fault and reset signals
● Backward compatible with USB Battery Charging
Specification Revision 1.2 (USB BC1.2) Dedicated
Charging Port (DCP)
The iW629 and iW1780 provide double-layer cable protection.
On the secondary side, the iW629 incorporates Dialog’s
proprietary D+/D- over-voltage protection to address VBUS D+/
D- soft shorts. On the primary side, the iW1780 uses Dialog’s
SmartDefender advanced hiccup technology to reduce the
average output power during soft shorts without latch.
● Pin-to-pin compatible with iW626
● Programmable active fast discharge from 9V to 5V at
mobile device (MD) unplug or upon request with built-in
switch or external switch
Dialog’s innovative, proprietary technology ensures that power
supplies designed with the iW629 and iW1780 can provide
multi-level output voltage configuration, with user-selected
various output current limit combinations. Furthermore, 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.
● Normally OFF state with <120mA cut-off current during
5V steady-state operation to achieve <10mW power
consumption at no load
● Wide operating voltage range from 3V to 25V
● Built-in opto-coupler LED driver with minimum driving
current of 2mA
● 6-lead SOT-23 package
Qualcomm® Quick ChargeTM 2.0 is a product of Qualcomm Technologies, Inc.
3.0 Applications
● Rapid-charging AC/DC adapters for smart phones,
tablets, and other portable devices
iW629
Rev. 0.5 Preliminary
Product Summary
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© 2015 Dialog Semiconductor (UK) Ltd.