Power Controller. iW3640 Datasheet

iW3640 Controller. Datasheet pdf. Equivalent

iW3640 Datasheet
Recommendation iW3640 Datasheet
Part iW3640
Description AC/DC Digital Power Controller
Feature iW3640; iW3640 AC/DC Digital Power Controller for Two-Channel High Power Factor Dimmable LED Drivers 1 Desc.
Manufacture Dialog Semiconductor
Datasheet
Download iW3640 Datasheet




Dialog Semiconductor iW3640
iW3640
AC/DC Digital Power Controller for Two-Channel
High Power Factor Dimmable LED Drivers
1 Description
The iW3640 is a two-stage, high-performance AC/DC offline power supply controller for
dimmable LED luminaires. It applies advanced digital control technology to detect the
dimmer type and phase, which provides dynamic impedance to interface the dimmer and
control the LED brightness at the same time. The iW3640 uses Dialog’s unique digital
FlickerlessTM technology to eliminate visible flicker in the entire dimming range and
minimize low frequency output ripple current. The iW3640 drives two-channel outputs. The
duty cycle of the second channel varies with the dimming ratio.
With advanced dimmer detection technology, the iW3640 can operate with most wall dimmers including leading-edge
dimmers (R-type or R-L type) and trailing-edge dimmers (R-C type). In addition, the iW3640’s cycle-by-cycle waveform
analysis technology allows fast dimmer setting response. When no dimmer is on the line, the iW3640 optimizes the
power factor and minimizes the current harmonic distortion to the AC line.
The iW3640 operates the main power converter that delivers constant current to the LED load in quasi-resonant
mode to provide high power efficiency and minimize electro-magnetic interference (EMI). It uses Dialog’s patented
PrimAccurateTM primary-side sensing technology to achieve excellent LED current regulation under different AC line
and LED load voltages, without using a secondary-side feedback circuit and eliminating the need for an optocoupler.
The iW3640 minimizes the external components count by simplifying the EMI filter with Dialog’s EZ-EMI® technology.
The intelligent dimmer detection technology eliminates the need for a high-power bleeder. Additionally, the digital
control loop of the iW3640 maintains stable overall operating conditions without the need for loop compensation
components.
2 Features
Isolated/non-isolated offline 120VAC/230VAC LED driver
up to 25W output power
Wide line frequency ranges (from 45Hz to 66Hz)
Meets IEC61000-3-2 requirement
Total harmonic distortion < 15% with PF > 0.95
Wide dimmer compatibility
xx Leading-edge dimmer
xx Trailing-edge dimmer
xx Digital dimmer
xx Occupancy sensors and timers
xx 200kHz maximum switching frequency enables
small transformer
xx Intelligent dimmer interface eliminates dedicated
high-power bleeder
● PrimAccurateprimary-side sensing eliminates the
need for optocoupler feedback
Tight LED current regulation (± 5%)
Fast start-up (< 0.5s without dimmer)
Supports hot-plug LED module (Zhaga)
Compatible with NEMA SSL6 dimming curve
standard
Under 20% output ripple current
Supports wide LED output voltage range
Wide dimming range from 1% to 100%
● FlickerlessTM LED dimming
Resonant control to achieve high efficiency
(typical > 85% without dimmer)
Over-temperature LED current foldback
xx Small solution size
xx Two-stage topology enables small-size input and
output filter capacitors
Multiple protection features:
xx LED open-circuit and short-circuit protection
xx Over-current and over-temperature protection
xx Current sense resistor short-circuit protection
xx AC line over-voltage/-frequency protection
3 Applications
Dimmable LED retrofit lamps up to 25W
Dimmable LED ballast and luminaires up to 25W
Product Summary
Rev. 1.0
10-May-2016
www.dialog-semiconductor.com
1 of 6
© 2016 Dialog Semiconductor



Dialog Semiconductor iW3640
iW3640
AC/DC Digital Power Controller for Two-Channel
High Power Factor Dimmable LED Drivers
AC Input
Boost
Converter
Flyback
Converter
1
BVSENSE
4 BDRV
14
VCB
6
ASU
3 BISENSE
iW3640
7
VCC
FDRV 10
FISENSE 11
2 VIN
AGND
9
PGND
8
TDRV
5
FVSENSE 12
VT
13
NTC
Output 1
High VOUT
Output 2
Low VOUT
Figure 3.1 : iW3640 Simplified Schematic
Product Summary
www.dialog-semiconductor.com
Rev. 1.0
2 of 6
10-May-2016
© 2016 Dialog Semiconductor



Dialog Semiconductor iW3640
iW3640
AC/DC Digital Power Controller for Two-Channel
High Power Factor Dimmable LED Drivers
4 Pinout Description
iW3640
1 BVSENSE
VCB 14
2 VIN
3 BISENSE
VT 13
FVSENSE 12
4 BDRV
FISENSE 11
5 TDRV
FDRV 10
6 ASU
AGND 9
7 VCC
PGND 8
Figure 4.1 : 14-Lead SOIC Package
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Pin Name
BVSENSE
VIN
BISENSE
BDRV
TDRV
ASU
VCC
PGND
AGND
FDRV
FISENSE
FVSENSE
VT
VCB
Type
Pin Description
Analog Input Boost inductor voltage feedback input
Analog Input Rectified AC line voltage input
Analog Input Boost current sense input
Output
Base drive output for boost BJT
Analog In/Out Driver parameter configuration pin and second channel driver
Output
Active start-up and bleeder control
Power
Power supply for control logic and voltage sense for power-on reset circuit
Ground
Power ground
Ground
Signal ground. It should be connected to the power ground on PCB.
Output
Gate drive output for flyback MOSFET
Analog Input Flyback current sense (used for cycle-by-cycle peak current control and limit)
Analog Input
Analog Input
Analog Input
Flyback voltage sense (used for primary-side regulation and ZVS)
External power limit shutdown control and external over-temperature power
derating
Boost output voltage feedback input
Product Summary
www.dialog-semiconductor.com
Rev. 1.0
3 of 6
10-May-2016
© 2016 Dialog Semiconductor







@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)