1 of 7 1 description the IW1602 is a high performance ac/dc power supply controller 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 includes a number of key built-in protection features while minimizing the external component count, simplifying emi design and lowering the total bill of material cost. the IW1602 removes the need for secondary feedback circuit while achieving excellent line and load regulation. it also eliminates the need for loop compensation components while maintaining stability over all operating conditions. pulse-by-pulse waveform analysis allows for a loop response that is much faster than traditional solutions, resulting in improved dynamic load response. the built-in power limit function enables optimized transformer design in universal off-line applications and allows for a wide input voltage range. dialogs innovative proprietary technology ensures that power supplies built with the IW1602 can achieve both the highest average active effciency and low no-load power consumption, and have fast dynamic load response in a compact form factor in typical 5v, 2a, 10w applications. the IW1602 has unique user-confgurable light-load operation modes to allow optimization of the system cost and performance according to the application requirements of dynamic load response and no-load power consumption. 2 features user-confgurable light-load operation modes for optimized dynamic load response and no-load power consumption no-load power consumption < 30mw at 230v ac with fast dynamic load response in typical 5v, 2a 10w compact adapter/charger when a secondary- side controller with active voltage positioning (avp) function is used (iw676-30 or iw600) no-load power consumption < 75mw at 230v ac along with fast dynamic load response in typical 5v, 2a 10w compact adapter/charger applications without a secondary-side avp controller tight constant-voltage and constant current regulation across line and load range primary-side feedback eliminates opto-isolators and simplifes design intelligent low power management achieves ultra-low operating current (~250a) at no-load proprietary optimized 89khz maximum pwm switching frequency with quasi-resonant operation achieves best size, effciency and common mode noise 3 applications compact ac/dc adapters/chargers for media tablets and smart phones ac/dc adapters for consumer electronics user-confgurable 5-level cable drop compensation provides design fexibility ez-emi ? design enhances manufacturability adaptive multi-mode pwm/pfm control improves effciency complies with coc version 5 tier 2 and doe level vi energy-effciency specifcations with ample margin built-in single-point fault protections against output short-circuit, output over-voltage and output over- current dedicated pins for external over-voltage protection, with latch function available smartdefender ? smart hiccup technology helps to address issues of soft shorts in cables and connectors by effectively reducing the average output power at fault conditions without latch optional on-chip internal over-temperature protection no audible noise over entire operating range space-saving sot-23 package IW1602 off-line digital green-mode quasi-resonant pwm controller rev. 1.6 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 24-oct-2017
2 of 7 figure 3.1 : IW1602-10b typical application circuit using iw676-30 as the secondary-side synchronous rectifer and dynamic load detection ic (minimum switching frequency is set at 140hz to achieve < 30mw no-load power consumption in 5v, 2a 10w adapter design) l + v out gnd + u1 IW1602 v cc v sense cfg output gnd cs/fs 1 5 3 6 4 2 n r fs r cdc r isns figure 3.2 : IW1602 typical application circuit (minimum switching frequency is set at 2khz to achieve < 75mw no-load power consumption in 5v, 2a 10w adapter design) l + u1 IW1602-10b v cc v sense cfg output gnd cs/fs r fs r isns r 2 1 5 3 6 4 2 n v out rtn + + u2 iw676-30 drain source out v in v cc gnd 1 5 3 6 4 2 r 1 r damp IW1602 off-line digital green-mode quasi-resonant pwm controller rev. 1.6 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 24-oct-2017
3 of 7 4 pinout description pin number pin name type pin description 1 v cc power input ic power supply. 2 v sense analog input auxiliary voltage sense. it is used for primary-side regulation and detection of secondary-side load transient signal. 3 cfg analog input it is used for external cable drop compensation (cdc) confguration and sup - plemental over-voltage protection (ovp). 4 cs/fs analog input primary-side current sense and minimum switching frequency confguration. it is used for cycle-by-cycle peak-current control and limit in primary-side cv/ cc regulation. it is also used for minimum switching frequency confguration. 5 gnd ground ground. 6 output output gate drive for the external mosfet switch. IW1602 v cc v sense cfg output gnd cs/fs 1 2 3 6 4 5 figure 4.1 : 6-lead sot23 package IW1602 off-line digital green-mode quasi-resonant pwm controller rev. 1.6 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 24-oct-2017
4 of 7 parameter symbol value units dc supply voltage range (pin 1, 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 output (pin 6) -0.3 to 20.0 v v sense input (pin 2, i vsense 10ma) -0.7 to 4.0 v cs/fs input (pin 4) -0.3 to 4.0 v cfg (pin 3, i cfg 20ma) -0.8 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 208 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 IW1602 off-line digital green-mode quasi-resonant pwm controller rev. 1.6 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 24-oct-2017
5 of 7 6 physical dimensions IW1602 off-line digital green-mode quasi-resonant pwm controller rev. 1.6 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 24-oct-2017
6 of 7 part number status options package description IW1602-00 not recommended for new design no latch, 3.0v cc shutdown voltage, smart hiccup with 2/8 duty cycle sot-23 tape & reel 1 IW1602-01 not recommended for new design ovp latch, cc shutdown and latch, 3.5v cc shutdown voltage, no smart hiccup sot-23 tape & reel 1 IW1602-02 not recommended for new design ovp latch, no cc operation and latch, no smart hiccup sot-23 tape & reel 1 IW1602-03 not recommended for new design no latch, 3.0v cc shutdown voltage, smart hiccup with 2/8 duty cycle, internal otp disabled sot-23 tape & reel 1 IW1602-00b active no latch, 3.0v cc shutdown voltage, smart hiccup with 2/8 duty cycle sot-23 tape & reel 1 IW1602-01b active ovp latch, cc shutdown and latch, 3.5v cc shutdown voltage, no smart hiccup sot-23 tape & reel 1 IW1602-02b active ovp latch, no cc operation and latch, no smart hiccup sot-23 tape & reel 1 IW1602-03b active no latch, 3.0v cc shutdown voltage, smart hiccup with 2/8 duty cycle, internal otp disabled sot-23 tape & reel 1 IW1602-10b active no latch, 3.0v cc shutdown voltage, smart hiccup with 2/8 duty cycle, optimized to pair with iw676-30 sot-23 tape & reel 1 note 1: tape and reel packing quantity is 3,000/reel. minimum ordering quantity is 3,000. 7 ordering information IW1602 off-line digital green-mode quasi-resonant pwm controller rev. 1.6 product summary ? 2017 dialog semiconductor www.dialog-semiconductor.com 24-oct-2017
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