1 of 7 1 description the IW1780 is a high performance ac/dc power supply controller for rapid charge that uses digital control technology to build peak-current mode pwm fyback power supplies. the device operates in quasi-resonant mode to provide high effciency and a number of key built-in protection features. the IW1780 can achieve tight multi-level constant voltage and multi-level constant current regulation without a traditional secondary-feedback circuit. it also eliminates the need for loop compensation components while maintaining stability over all operating conditions. the IW1780 is optimized to work with dialogs secondary-side controller for qualcomm ? quick charge? 2.0 (qc2.0) interface and secondary-primary communication, iw626, to achieve fast and smooth voltage transition upon request by portable devices (pd). when paired with the iw626, the IW1780 eliminates the discrete decoders on the primary side, minimizes the external component count and simplifes system designs. the iw626 can communicate with the IW1780 through one optocoupler for all the necessary rapid charge information including output voltage requests, output current limits, output voltage undershoot and output over-voltage. dialogs innovative proprietary technology ensures that power supplies designed with the IW1780 and iw626 can provide 5v/9v/12v output voltage confguration, with user-selected various output current limit combinations. 2 features supports rapid charge technologies such as qualcomm ? quick charge? 2.0 (qc2.0) technology to provide 5v/9v/12v with user-selected various output current limit combinations proprietary secondary-to-primary digital communication and built-in decoder eliminate discrete decoder and signifcantly simplify system design single optocoupler for all the rapid charge information: output voltage request, output current limit, output voltage undershoot, and over-voltage protection tight multi-level constant-voltage and multi-level constant-current regulation with primary-side feedback and control ultra-low no-load power consumption with lowest system cost (< 10mw at 230v ac with typical 5v2a setting using schottky diode rectifer; < 20mw at 230v ac with typical 5v2a setting using synchronous rectifer) fast dynamic load response (dlr) with secondary- side load transient detection 3 applications rapid-charging ac/dc adapters for smart phones, tablets and other portable devices (5v-12v, 1a-3a). proprietary optimized line/load adaptive maximum constant frequency pwm switching with quasi- resonant operation achieves best size, effciency, and common mode noise multi-mode pwm/pfm control improves effciency at various load conditions user-confgurable 5-level cable drop compensation independent of output voltage ez-emi ? design enhances manufacturability built-in single-point fault protections against output short-circuit including soft short and half short, output over-voltage, and output over-current smartdefender ? smart hiccup technology helps address issues of soft shorts in cables and connectors by effectively reducing the average output power at fault conditions without latch user-confgurable external shutdown control no audible noise over entire operating range IW1780 rapid charge ? ac/dc digital quasi-resonant pwm controller rev. 1.6 product summary ? 2015 dialog semiconductor www.dialog-semiconductor.com 18-dec-2015
2 of 7 figure 3.1 : IW1780 typical application circuit for multi-level output voltage and current (using iw626 as secondary-side controller for qc2.0. achieving < 10mw no-load power consumption.) figure 3.2 : IW1780 typical application circuit for multi-level output voltage and current (using iw626 as secondary-side controller for qc2.0 and iw671 as synchronous rectifer controller . achieving < 20mw no-load power consumption.) u2 iw626 v out rtn + + + u1 IW1780 v sense sd v cc gnd 1 2 3 8 7 6 4 5 ntc l n output cs/cdc dlnk asu r cdc 3 1 drv gnd 2 4 6 5 dis v cc d- d+ d+ d- + + u1 IW1780 v sense sd v cc gnd 1 2 3 8 7 6 4 5 ntc l n output cs/cdc dlnk asu r cdc v out rtn vps drv v in v cc 1 2 3 8 7 6 4 5 plrin drain + + gnd out u3 iw671 u2 iw626 3 1 drv gnd 2 4 6 5 dis v cc d- d+ d+ d- IW1780 rapid charge ? ac/dc digital quasi-resonant pwm controller rev. 1.6 product summary ? 2015 dialog semiconductor www.dialog-semiconductor.com 18-dec-2015
3 of 7 4 pinout description pin number pin name type pin description 1 v sense analog input auxiliary voltage sense. used for primary-side regulation. 2 sd analog input external shutdown control. can be confgured for external over-temperature protection (otp) by connecting an ntc resistor from this pin to ground. 3 dlnk analog input digital communication link signal. used for secondary-side to primary-side communication for all rapid charge information, which includes output voltage requests, output current limits, output voltage undershoot, and over-voltage protection. 4 asu output control signal. used for active start-up device (bjt or depletion mode n-fet). 5 cs/cdc analog input primary-side current sense and external cable drop compensation (cdc). used for cycle-by-cycle peak-current control and limit in primary-side cv/cc regulation. also used for cdc confguration. 6 output output gate drive for external mosfet switch. 7 gnd ground ground. 8 v cc power input ic power supply. u2 iw626 v out rtn + + + u1 IW1780 v sense sd v cc gnd 1 2 3 8 7 6 4 5 ntc l n output cs/cdc dlnk asu r cdc 3 1 drv gnd 2 4 6 5 dis v cc d- d+ d+ d- figure 3.3 : IW1780 typical low cost application circuit for multi-level output voltage and current (using iw626 as secondary-side controller for qc2.0. achieving < 50mw no-load power consumption without using active start-up device.) IW1780 v sense sd dlnk asu v cc gnd output cs/cdc 1 2 3 8 7 6 4 5 figure 4.1 : 8-lead soic package IW1780 rapid charge ? ac/dc digital quasi-resonant pwm controller rev. 1.6 product summary ? 2015 dialog semiconductor www.dialog-semiconductor.com 18-dec-2015
4 of 7 parameter symbol value units dc supply voltage range (pin 8, i cc = 20ma max) v cc -0.3 to 25.0 v continuous dc supply current at v cc pin (v cc = 15v) i cc 20 ma asu output (pin 4) -0.3 to 19.0 v output (pin 6) -0.3 to 20.0 v v sense input (pin 1, i vsense 10ma) -0.7 to 10.0 v cs/cdc input (pin 5) -0.3 to 4.0 v sd (pin 2) -0.3 to 4.0 v dlnk (pin 3) -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-ambient ja 160 c/w esd rating per jedec jesd22-a114 2,000 v latch-up test per jesd78a 100 ma absolute maximum ratings are the parameter values or ranges which can cause permanent damage if exceeded. 5 absolute maximum ratings IW1780 rapid charge ? ac/dc digital quasi-resonant pwm controller rev. 1.6 product summary ? 2015 dialog semiconductor www.dialog-semiconductor.com 18-dec-2015
5 of 7 6 physical dimensions 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 e1 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 e1 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. 8-lead small outline (soic) package coplanarity 0.10 (0.004) 8 5 4 1 seating plane a1 e h b d e a a2 c l h x 45 inches symbol millimeters min 0.0040 a1 max min max 0.010 0.10 0.25 0.053 a 0.069 1.35 1.75 0.014 b 0.019 0.35 0.49 0.007 c 0.010 0.19 0.25 0.189 d 0.197 4.80 5.00 0.150 e 0.157 3.80 4.00 0.050 bsc e 1.27 bsc 0.228 h 0.244 5.80 6.20 0.10 h 0.020 0.25 0.50 0.016 l 0.049 0.4 1.25 0 8 0.049 a2 0.059 1.25 1.50 figure 6.1 : 8-lead small outline (soic) package IW1780 rapid charge ? ac/dc digital quasi-resonant pwm controller rev. 1.6 product summary ? 2015 dialog semiconductor www.dialog-semiconductor.com 18-dec-2015
6 of 7 part no. options package description IW1780-00 for applications with same cc limit for 5v/9v, 3v cc shutdown voltage 1 for 5v v out , no smart hiccup, paired with iw626-02/04 soic-8 tape & reel 2 IW1780-01 for applications with different cc limits for 5v/9v, 3v cc shutdown voltage 1 for 5v v out , smart hiccup with 2/8 duty cycle, paired with iw626-00 soic-8 tape & reel 2 IW1780-03 for applications with different cc limits for 5v/9v, 3v cc shutdown voltage 1 for 5v v out , smart hiccup with 2/8 duty cycle, the regulation voltage for 9v/12v v out is approximately 2% lower compared with IW1780-01 with the same external circuit, paired with iw626-00 soic-8 tape & reel 2 IW1780-04 for applications with same cc limits for 5v/9v, 2.7v cc shutdown voltage 1 for all v out , no smart hiccup, paired with iw626-02/04 soic-8 tape & reel 2 IW1780-06 for applications with same cc limits for 5v/9v, no cc operation, no smart hiccup, paired with iw626-02/04 soic-8 tape & reel 2 IW1780-07 for applications with same cc limits for 5v/9v, 3.5v cc shutdown voltage 1 for 5v v out , no smart hiccup, paired with iw626-02/04 soic-8 tape & reel 2 IW1780-09 for applications with same cc limits for 5v/9v, 3v cc shutdown voltage 1 for 5v v out , smart hiccup with 2/8 duty cycle, paired with iw626-02/04 soic-8 tape & reel 2 IW1780-23 for applications with pre-determined cc limit coeffcients of k=0.41 1/0.347/0.411 for 5v/9v/12v, 3v cc shutdown voltage for 5v v out 1 , smart hiccup with 2/8 duty cycle, same cv regulation as IW1780-03, paired with iw626-02/04 soic-8 tape & reel 2 IW1780-30 for applications with same cc limit for 5v/9v, 3v cc shutdown voltage 1 for 5v v out , no smart hiccup, paired with iw626-02/04, ovp latch for v sense -based ovp and secondary-side-based ovp soic-8 tape & reel 2 note 1: unless specifed, the default cc shutdown voltages are 6.5v for 9v v out and 10v for 12v v out . note 2: tape & reel packing quantity is 2,500/reel. minimum ordering quantity is 2,500. 7 ordering information IW1780 rapid charge ? ac/dc digital quasi-resonant pwm controller rev. 1.6 product summary ? 2015 dialog semiconductor www.dialog-semiconductor.com 18-dec-2015
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