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iW636 Datasheet Preview

iW636 Datasheet

AC/DC Secondary-Side Controller

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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
Double-layer cable protection:
xx Secondary side (iW636): Proprietary D+/D- over-
voltage protection (OVP) addresses VBUS D+/D-
soft shorts
xx Primary side (iW1782): SmartDefendersmart
hiccup technology reduces average output power
at fault conditions without latch
● 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 (UV), over-voltage
protection (OVP), and fault and reset signals
● Adaptive OVP/UV detection for most VBUS levels
Backward compatible with QC2.0 and USB Battery
Charging Specification Revision 1.2 (USB BC1.2)
● Pin-to-pin compatible with iW626
● 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
Normally OFF state with <150µA cut-off current
during 5V steady-state operation to achieve <10mW
overall system no-load power consumption
● Wide operating voltage range from 3V to 16V
Built-in opto-coupler LED driver with minimum driving
current of 2mA
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.
Product Summary
www.dialog-semiconductor.com
Rev. 1.3
1 of 7
12-Mar-2018
© 2018 Dialog Semiconductor




Dialog Semiconductor

iW636 Datasheet Preview

iW636 Datasheet

AC/DC Secondary-Side Controller

No Preview Available !

iW636
AC/DC Secondary-Side Controller for Qualcomm® Quick ChargeTM 3.0
USB Interface
L
+
N
+
VOUT
RTN
NTC
U1
iW1782
1 VSENSE
VCC 8
2 SD
GND 7
3 DLNK
OUTPUT 6
4 ASU
CS/CDC 5
+
RCDC
3 21
VCC DRV DIS
D- GND D+
456
U2
iW636
D+
D-
Figure 3.1 : iW636 Typical Application Circuit for Multi-Level Output Voltage and Current
(Using iW1782 as Primary-Side Controller. Achieving <10mW No-Load Power Consumption in a Typical 15W Design)
L
+
N
NTC
U1
iW1782
1 VSENSE
VCC 8
2 SD
GND 7
3 DLNK
OUTPUT 6
4 ASU
CS/CDC 5
+
RCDC
+
U3
iW673
1 DRAIN VIN 6
2 SOURCE VCC 5
3 OUT
GND 4
+
VOUT
RTN
U2
iW636
3 21
VCC DRV DIS
D- GND D+
456
D+
D-
Figure 3.2 : iW636 Typical Application Circuit for Multi-Level Output Voltage and Current
(Using iW1782 as Primary-Side Controller and iW673 as Synchronous Rectifier Controller. for Higher Efficiency
Achieving < 20mW No-Load Power Consumption in a Typical 15W Design)
Product Summary
www.dialog-semiconductor.com
Rev. 1.3
2 of 7
12-Mar-2018
© 2018 Dialog Semiconductor


Part Number iW636
Description AC/DC Secondary-Side Controller
Maker Dialog Semiconductor
Total Page 7 Pages
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