1 of 6 1 description the IW3629 is a high-performance ac/dc off-line digital power supply controller for led luminaires up to 120w or above. the two-stage design combines high power factor (pf > 0.95), low total harmonic distortion (thd <10%) and negligible line frequency ripple (< 5%) to make the IW3629 ideal for high-power non-dimmable led lamps and luminaires. 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 settling time. the IW3629 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. and, by using dialogs flickerless ? technology, virtually all ficker is removed from the output. the digital control algorithms used by the IW3629 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 over-temperature derating protection with external ntc to program derating start temperature fast yet smooth boost start-up scheme to achieve short pf settling time fast line 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 non-dimmable led lamps and luminaires output power up to 120w or above 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 circuit protection x single-fault protection x over-current protection x led short-circuit protection x current sense-resistor-short-circuit protection x input over-voltage and brown-out protection x internal junction temperature-based over- temperature protection IW3629 two-stage, flickerless? digital off-line led driver with high pf and low thd rev. 1.1 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 23-august-2017
2 of 6 figure 3.1 : IW3629 typical application circuit with internal (-00) or external (-01) sensing ac input 1 14 cfg v in b drv IW3629 10 11 12 13 5 8 9 7 6 4 3 2 bi sense agnd pgnd v t fv sense fi sense f drv v cc asu v cb bv sense v out rtn ntc boost converter flyback converter -01 IW3629 two-stage, flickerless? digital off-line led driver with high pf and low thd rev. 1.1 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 23-august-2017
3 of 6 4 pinout description pin number pin name type pin description 1 bv sense analog input boost inductor voltage feedback used for valley mode switching. 2 v in analog input rectifed ac line voltage feedback. -00 uses internal resistor (15k typically) to sense line voltage; -01 needs an external resistor connected from this pin to gnd. 3 bi sense analog input boost current sense (only used for cycle-by-cycle peak current limit). connect an approximately 1k resistor to the source of the boost mosfet switch to improve noise immunity. 4 b drv output gate drive for boost mosfet. 5 cfg analog in/out chooses input start-up voltage and brown-out shutdown voltage. 6 asu output control signal for active start-up device. this signal is pulled low after start-up is fnished to cut off the active device. if not using active start-up device, leave this pin foating. 7 v cc power power supply for control logic and voltage sense for power-on reset circuitry. a decoupling capacitor of 0.1f or so should be connected between the v cc pin and gnd. 8 pgnd ground power ground. 9 agnd ground signal ground. 10 f drv output gate drive for flyback mosfet. 11 fi sense analog input primary current sense (used for cycle-by-cycle peak current control and limit). connect an approximately 1k w resistor to the source of the fyback mosfet switch to improve noise immunity. 12 fv sense analog input auxiliary voltage sense (used for primary-side regulation and valley mode switching). 13 v t analog input output power limit and shutdown control. an ntc resistor connected from this pin to gnd provides over-temperature derating protection. 14 v cb analog input boost output voltage feedback. -00 uses internal resistor (15k w typically) to sense line voltage; -01 needs an external resistor connected from this pin to gnd. figure 4.1 : 14-lead soic-14 package IW3629 1 2 3 14 13 12 4 11 v cb v in bi sense b drv fv sense fi sense bv sense v t 5 6 7 10 9 8 f drv asu v cc pgnd cfg agnd IW3629 two-stage, flickerless? digital off-line led driver with high pf and low thd rev. 1.1 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 23-august-2017
4 of 6 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 cfg input (pin 5) -0.3 to 4.0 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 v t 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 IW3629 two-stage, flickerless? digital off-line led driver with high pf and low thd rev. 1.1 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 23-august-2017
5 of 6 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 3629 - 00 internal sensing for v in and v cb ; z in = 15k : and z cb = 15k : soic-14 tape & reel 1 IW3629-01 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 IW3629 two-stage, flickerless? digital off-line led driver with high pf and low thd rev. 1.1 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 23-august-2017
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