iW632
RapidCharge™ Dedicated Charging Port Controller for
Qualcomm
®
Quick Charge™ 2.0 and Divider Mode
Rev. 1.1Product Summary
© 2017 Dialog Semiconductorwww.dialog-semiconductor.com 1 of 6
08-February-2017
1 Description
The iW632 is a RapidCharge™ Dedicated Charging Port (DCP) controller for Qualcomm
®
Quick Charge
TM
2.0
(QC2.0) technology, optional Samsung Adaptive Fast Charging (AFC) and divider mode USB interface. It allows
rapid charging of QC2.0 or divider mode enabled mobile devices (MDs), and it automatically identies QC2.0, AFC
and divider mode protocols. The iW632 resides on the USB port of the power adapter and allows the adapter to be
congured for multi-level output such as 5V, 9V, or 12V depending on the voltage requested by MD. It can be used
in DC/DC power converter systems to achieve smooth voltage transition and low no-load power consumption. The
iW632 implements three output pins for output feedback ratio change, output over-voltage, and fault and reset signals.
In addition, iW632 also implements proprietary D+/D- over-voltage protection (OVP) and proprietary D- impedance
detection to address soft short issues in the output cables and connectors that can be caused by such things as a
poor or loose connection between the cable connector and the socket, contamination in the USB connector, or a
worn-out cable, and provides protection against the damages.
Dialog’s innovative proprietary technology ensures that power supplies designed with the iW632 can provide multi-
level output voltage conguration, smooth voltage transition and ultra-low no load power consumption.
2 Features
● Supports Qualcomm® QC2.0 High Voltage Dedicated
Charging Port (HVDCP) Class A with voltage
conguration of 5V, 9V, and 12V
● Supports divider mode with D+/D- at 2.7V/2.0V for
2.1A rapid charging
● Optionally supports Samsung Adaptive Fast Charging
(AFC) for output voltage and current negotiation
● Backward compatible with USB Battery Charging
Specication Revision 1.2 (USB BC1.2) DCP
● Backward compatible with Chinese Telecom Standard
YD/T 1591-2009 Shorted Mode
● Automatically differentiates MDs and determines rapid
charging protocols
3 Applications
● DC/DC converters/chargers for smart phones, tablets,
and other mobile devices
Figure 3.1 : iW632 Typical Application Circuit
iW632
V
OUT
GND
DIS
V
CC
D+
GND
1
2
3
8
7
6
4
5
D-
V2
OVP
V1
D+
D-
FB
Power
Converter
OVP
V_Logic_H
U1
● Proprietary D+/D- OVP and proprietary D-
impedance detection address soft short issues in
the output cables and connectors and provides
protection against damages
● Programmable active fast discharge from 9V/12V
to 5V at MD unplug or from a high voltage level to
a lower level upon request with built-in switch or
external switch
● Normally OFF state with <120µA cut-off current
during 5V steady-state operation to achieve ultra-low
power consumption at no load
● Wide operating voltage range from 3V to 25V
Qualcomm
®
Quick Charge
TM
2.0 is a product of Qualcomm Technologies, Inc.
iW632
RapidCharge™ Dedicated Charging Port Controller for
Qualcomm
®
Quick Charge™ 2.0 and Divider Mode
Rev. 1.1Product Summary
© 2017 Dialog Semiconductorwww.dialog-semiconductor.com 2 of 6
08-February-2017
4 Pinout Description
iW632
DIS
V
CC
OVP
V1
D+
GND
D-
V2
1
2
3
8
7
6
4 5
Figure 4.1 : 8-Lead SOIC/MSOP Package
Pin Number Pin Name Type Pin Description
1
DIS
Analog Output
Discharging circuit. Used for fast discharging of output capacitor.
2
V
CC
Power Supply IC power supply.
3
OVP Analog Output
External circuit drive. It is pulled down at OVP, and can be used to
change external circuit signal.
4
V1 Analog Output
External circuit drive. It is pulled down at 9V or 12V state, and can be
used to change external circuit signal.
5
V2 Analog Output
External circuit drive. It is pulled down at 12V state, and can be used to
change external circuit signal.
6
D-
Analog Input/
Output
USB D- signal. It is used for QC2.0/AFC signal and divider mode.
7
GND Ground Ground.
8
D+
Analog Input/
Output
USB D+ signal. It is used for QC2.0/AFC signal and divider mode.