IW3602-00 Datasheet, PDF (1/18 Pages) Dialog Semiconductor – AC/DC Digital Power Controller for Dimmable LED Drivers

iW3602-00
AC/DC Digital Power Controller for
Dimmable LED Drivers
1.0 Features
2.0 Description
●● Isolated AC/DC offline 100V_AC LED driver
●● Line frequency ranges from 45 Hz to 66 Hz
●● Intelligent wall dimmer detection
xx Leading-edge dimmer
xx No-dimmer detected
The iW3602-00 is a high performance AC/DC offline power
supply controller for dimmable LED luminaires, which uses
advanced digital control technology to detect the dimmer
type and phase. The dimmer conduction phase controls the
LED brightness. The LED brightness is modulated by PWM-
dimming. The iW3602-00’s unique digital control technology
eliminates visible flicker.
xx Unsupported dimmer
●● Hybrid dimming scheme
●● Wide dimming range from 1% up to 100%
●● No visible flicker
The iW3602-00 can operate with all dimmer schemes
including: leading-edge dimmer, as well as other dimmer
configurations such as R-type, or R-L type. When a dimmer
is not present, the controller can automatically detect that
there is no dimmer.
●● Resonant control to achieve high efficiency, 85% without
dimmer
●● Temperature compensated LED current
●● Small size design
xx Small size input bulk capacitor
xx Small size output capacitor
xx Small transformer
●● Primary-side sensing eliminates the need for opto-
isolator feedback and simplifies design
The iW3602-00 operates in a quasi-resonant mode to provide
high efficiency. The iW3602-00 provides a number of key
built-in features. The iW3602-00 uses Dialog’s advanced
primary-side sensing technology to achieve excellent line
and load regulation without secondary feedback circuitry. In
addition, the iW3602-00’s pulse-by-pulse waveform analysis
technology allows accurate LED current regulation. The
iW3602-00 maintains stability over all operating conditions
without the need for loop compensation components.
Therefore, the iW3602-00 minimizes external component
count, simplifies EMI design and lowers overall bill of
materials cost.
●● Tight LED current regulation ± 5%
●● Fast start-up, typically 10µA start-up current
●● Hot-plug LED module support
●● Multiple protection features:
3.0 Applications
●● Dimmable LED luminaires
●● Optimized for 3W to 10W output power
xx LED open circuit protection
xx Single-fault protection
xx Over-current protection
xx LED short circuit protection
xx Current sense resistor short circuit protection
xx Over-temperature protection
xx Input over-voltage protection
●● Up to 10W output power
iW3602-00
Datasheet
Rev. 0.8 Preliminary
1 of 20
© 2014 Dialog Semiconductor (UK) Ltd.