Power Controller. iW3614 Datasheet

iW3614 Controller. Datasheet pdf. Equivalent

iW3614 Datasheet
Recommendation iW3614 Datasheet
Part iW3614
Description AC/DC Digital Power Controller
Feature iW3614; iW3614 AC/DC Digital Power Controller for High Power Factor Dimmable LED Drivers 1.0 Features ●● Is.
Manufacture Dialog Semiconductor
Datasheet
Download iW3614 Datasheet




Dialog Semiconductor iW3614
iW3614
AC/DC Digital Power Controller for
High Power Factor Dimmable LED Drivers
1.0 Features
Isolated AC/DC offline 100 VAC / 230 VAC LED driver
Meets harmonic requirements, high power factor
(power factor > 0.9 without dimmer)
Line frequency ranges from 45Hz to 66Hz
Intelligent wall dimmer detection
xx Leading-edge dimmer
xx Trailing-edge dimmer
xx No-dimmer detected
xx Unsupported dimmer
Hybrid dimming scheme
Wide dimming range from 1% up to 100%
No visible flicker
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
Tight LED current regulation ± 5%
Fast start-up, typically 10µA start-up current
Hot-plug LED module support
Multiple protection features:
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
2.0 Description
The iW3614 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. iW3614’s unique digital control technology
eliminates visible flicker.
iW3614 can operate with all dimmer schemes including:
leading-edge dimmer, trailing-edge dimmer, as well as
other dimmer configurations such as R-type, R-C type or
R-L type. When a dimmer is not present, the controller can
automatically detect that there is no dimmer.
iW3614 operates in quasi-resonant mode to provide high
efficiency. The iW3614 provides a number of key built-in
features. The iW3614 uses Dialog’s advanced primary-
side sensing technology to achieve excellent line and load
regulation without secondary feedback circuitry. In addition,
iW3614’s pulse-by-pulse waveform analysis technology
allows accurate LED current regulation. The iW3614
maintains stability over all operating conditions without the
need for loop compensation components. Therefore, the
iW3614 minimizes external component count, simplifies EMI
design and lowers overall bill of materials cost.
3.0 Applications
Dimmable LED luminaires
Optimized for 3W - 15W output power
Capable of higher output power with enhanced external
driver
iW3614
Rev. 1.0
iW3614
February 20, 2018
Page 1



Dialog Semiconductor iW3614
iW3614
AC/DC Digital Power Controller for
High Power Factor Dimmable LED Drivers
AC Input
From Dimmer
Chopping
Circuit
+
Isolated Flyback
Converter
+
VOUT
RTN
NTC
Thermistor
U1
iW3614
1 OUTPUT(TR) VCC 8
2 VSENSE OUTPUT 7
3 VIN
ISENSE 6
4 VT
GND 5
+
4.0 Pinout Description
Figure 3.1 : Typical Application Circuit
iW3614
1 OUTPUT(TR)
VCC 8
2 VSENSE
OUTPUT 7
3 VIN
4 VT
ISENSE 6
GND 5
Pin # Name
Type Pin Description
1 OUTPUT(TR) Output Gate drive for chopping MOSFET switch
2
VSENSE
Analog Input Auxiliary voltage sense (used for primary side regulation and ZVS)
3 VIN Analog Input Rectified AC line voltage sense
4 VT Analog Input External power limit and shutdown control
5
GND
Ground Ground
6
ISENSE
Analog Input Primary current sense (used for cycle-by-cycle peak current control and limit)
7 OUTPUT Output Gate drive for main MOSFET switch
8 VCC Power Input Power supply for control logic and voltage sense for power-on reset circuitry
Rev. 1.0
iW3614
February 20, 2018
Page 2



Dialog Semiconductor iW3614
iW3614
AC/DC Digital Power Controller for
High Power Factor Dimmable LED Drivers
5.0 Absolute Maximum Ratings
Absolute maximum ratings are the parameter values or ranges which can cause permanent damage if exceeded. For
maximum safe operating conditions, refer to Electrical Characteristics in Section 6.0.
Parameter
DC supply voltage range (pin 8, ICC = 20mA max)
DC supply current at VCC pin
OUTPUT (pin 7)
OUTPUT(TR) (pin 1)
VSENSE input (pin 2, IVsense ≤ 10mA)
VIN input (pin 3)
ISENSE input (pin 6)
VT input (pin 4)
Power dissipation at TA ≤ 25°C
Maximum junction temperature
Storage temperature
Thermal Resistance Junction-to-PCB Board Surface Temperature
ESD rating per JEDEC JESD22-A114
Latch-Up test per JEDEC 78
Symbol
VCC
ICC
PD
TJ MAX
TSTG
ψJB (Note 1)
Value
-0.3 to 18
20
-0.3 to 18
-0.3 to 18
-0.7 to 4.0
-0.3 to 18
-0.3 to 4.0
-0.3 to 4.0
526
150
–65 to 150
70
2,000
±100
Units
V
mA
V
V
V
V
V
V
mW
°C
°C
°C/W
V
mA
Notes:
Note 1. ψJB [Psi Junction to Board] provides an estimation of the die junction temperature relative to the PCB [Board]
surface temperature. This data is measured at the ground pin (pin 5) without using any thermal adhesives. See
Section 9.13 for more information.
Rev. 1.0
iW3614
February 20, 2018
Page 3







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