1 of 7 1 description the IW3631 is a two-stage, high-performance ac/dc offine power supply controller for dimmable led luminaires with an analog dimming interface. it controls the led current based on an analog input voltage on the dimming pin. it has a built-in 0-10v dimming interface that works directly with 0-10v dimming systems, eliminating the need for a driver circuit and microcontroller. it can also be implemented to support wireless ssl applications without the need for auxiliary power supplies. the IW3631 uses dialogs unique digital flickerless tm technology to virtually eliminate all ficker in the entire dimming range and to minimize low frequency output ripple current. the two-stage approach allows the frst-stage boost converter to convert the rectifed ac voltage (90v ac to 277v ac ) to an intermediate voltage while correcting for power factor. the second-stage fyback converter then provides the constant current regulation to the leds. the combination of an active start-up circuit and fast yet smooth soft-start for both boost and fyback stages results in a start-up time (ac plug-in to 90% of set led current) of less than a half second and fast power factor (pf) settling time. the IW3631 operates in a quasi-resonant mode to provide high effciency and uses dialog s primaccurate ? advanced primary-side sensing technology to achieve excellent line and load regulation without secondary feedback components. the digital control algorithms used by the IW3631 maintain stability over all operating conditions without the need for any external loop compensation components, minimizing the bom cost. 2 features supports universal, 90v ac -277v ac input voltage range and output power up to 120w or above two-stage design (boost and fyback) x high pf (> 0.95) and low thd (< 10%) over entire input voltage range and 50%-100% load current under 5% 100hz/120hz output current ripple quasi-resonant control for both boost and fyback stages to achieve high effciency fast yet smooth boost start-up scheme to achieve short pf settling time fast transient response ensures minimal bulk voltage overshoot within the capacitor safety limit small size design x small size input bulk capacitor x small size output capacitor x small transformer 3 applications dimmable led ballast with analog input for dimming control dimmable led ballast with 0-10v interface for dimming control wireless ssl lighting output power up to 120w or above built-in 0-10v isolation transformer driver wide dimming range from 1% to 100% flickerless technology - removes virtually all ficker primaccurate primary-side sensing eliminates the need for optocoupler feedback and simplifes design tight led current regulation ( 5%) under 0.5s start-up time hot-plug led module support multiple protection features: x led open and short circuit protection x single-fault protection x over-current protection x current sense-resistor-short-circuit protection x input over-voltage and brown-out protection x internal junction temperature-based over- temperature protection IW3631 two-stage, flickerless? 0-10v dimmable digital off-line led driver with high pf and low thd rev. 1.1 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 23-january-2017
2 of 7 figure 3.1 : IW3631 analog dimming simplifed schematic with internal (-00) or external (-01) sensing ac input 1 14 v in b drv IW3631 10 11 12 13 5 8 9 7 6 4 3 2 bi sense agnd pgnd fv sense fi sense f drv v cc asu v cb bv sense v out rtn boost converter flyback converter -01 t drv 13 5 dim ac input 1 14 v in b drv IW3631 10 11 12 13 5 8 9 7 6 4 3 2 bi sense agnd pgnd fv sense fi sense f drv v cc asu v cb bv sense v out rtn boost converter flyback converter -01 t drv 13 5 dim 0-10v input figure 3.2 : IW3631 0-10v dimming simplifed schematic with internal (-00) or external (-01) sensing IW3631 two-stage, flickerless? 0-10v dimmable digital off-line led driver with high pf and low thd rev. 1.1 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 23-january-2017
3 of 7 ac input 1 14 v in b drv IW3631 10 11 12 13 5 8 9 7 6 4 3 2 bi sense agnd pgnd fv sense fi sense f drv v cc asu v cb bv sense v out rtn boost converter flyback converter -01 t drv 13 5 dim rf module figure 3.3 : IW3631 wireless dimming simplifed schematic with internal (-00) or external (-01) sensing IW3631 two-stage, flickerless? 0-10v dimmable digital off-line led driver with high pf and low thd rev. 1.1 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 23-january-2017
4 of 7 4 pinout description figure 4.1 : 14-lead soic-14 package IW3631 1 2 3 14 13 12 4 11 v cb v in bi sense b drv fv sense fi sense bv sense dim 5 6 7 10 9 8 f drv asu v cc pgnd agnd t drv pin number pin name type pin description 1 616 w wwww 2 1 w wwww wwwwww ww1 3 616 w wwww ww w 4 2ww ww26)7 t 2ww wwww 6 68 2ww wwww7w wwwwwwwwww ww 7 cc 3 3www ww)w ww cc 1 8 31 3 1 6 ) 2ww w26)7 11 ) 616 w 3www www w 12 ) 616 w ww w 13 w ww 14 w wwwwwwww wwwwww1 IW3631 two-stage, flickerless? 0-10v dimmable digital off-line led driver with high pf and low thd rev. 1.1 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 23-january-2017
5 of 7 absolute maximum ratings are the parameter values or ranges which can cause permanent damage if exceeded. 5 absolute maximum ratings parameter symbol value units dc supply voltage range (pin 7) v cc -0.3 to 18 v f drv output (pin 10) -0.3 to 18 v b drv output (pin 4) -0.3 to 18 v t drv output (pin 5) -0.3 to 18 v fv sense input (pin 12, i 10ma) -0.7 to 4.0 v bv sense input (pin 1, i 3ma) -0.7 to 4.0 v v in input (pin 2) -0.3 to 18 v v cb input (pin 14) -0.3 to 18 v fi sense input (pin 11) -0.3 to 4.0 v bi sense input (pin 3) -0.3 to 4.0 v asu output (pin 6) -0.3 to 18 v dim input (pin 13) -0.3 to 4.0 v maximum junction temperature t jmax 150 c operating junction temperature t jopt -40 to 150 c storage temperature t stg -65 to 150 c thermal resistance junction-to-pcb board surface temperature jb 45 c/w esd rating per jedec jesd22-a114 2,000 v IW3631 two-stage, flickerless? 0-10v dimmable digital off-line led driver with high pf and low thd rev. 1.1 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 23-january-2017
6 of 7 6 physical dimensions figure 6.1 : physical dimensions of 14-pin soic package compliant to jedec standard ms12f controlling dimensions are in inches; millimeter dimensions are for reference only this product is rohs compliant and halide free. soldering temperature resistance: [a] package is ipc/jedec std 020d moisture sensitivity level 1 [b] package exceeds jedec std no. 22-a111 for solder immersion resistance; package can withstand 10 s immersion < 260?c dimension d does not include mold flash, protrusions or gate burrs. mold flash, protrusions or gate burrs shall not exceed 0.15 mm per end. dimension e does not include interlead flash or protrusion. interlead flash or protrusion shall not exceed 0.25 mm per side. the package top may be smaller than the package bottom. dimensions d and e are determined at the outermost extremes of the plastic body exclusive of mold flash, tie bar burrs, gate burrs and interlead flash, but including any mismatch between the top and bottom of the plastic body. 14-lead soic package coplanarity 0.10 (0.004) 14 8 7 1 seating plane a1 e1 e b d e a c l top view side views inches symbol millimeters min 0.004 a1 max min max 0.010 0.10 0.25 0.053 a 0.069 1.35 1.75 0.013 b 0.020 0.33 0.51 0.007 c 0.010 0.19 0.25 0.337 d 0.344 8.55 8.75 0.150 e1 0.157 3.80 4.00 0.050 bsc e 1.27 bsc 0.016 l 0.050 0.40 1.27 0.010 h 0.020 0.25 0.50 ccc 0.004 0.10 h x 45 0.244 5.80 6.20 e 0.228 0 0 8 8 0 ccc 0 part number options package description i w 3631 - 00 internal sensing for v in and v cb ; z in = 15k w and z cb = 15k w soic-14 tape & reel 1 IW3631-01 external sensing for v in and v cb soic-14 tape & reel 1 note 1: tape & reel packing quantity is 2,500/reel. minimum ordering quantity is 2,500. 7 ordering information IW3631 two-stage, flickerless? 0-10v dimmable digital off-line led driver with high pf and low thd rev. 1.1 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 23-january-2017
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