page 1 of 27 YS12S16 dc-dc converter data sheet 9.6-14 vdc input; 0.7525-5.5 vdc programmable @ 16a applications ? intermediate bus architectures ? telecommunications ? data communications ? distributed power architectures ? servers, workstations benefits ? high efficiency ? no heat sink required ? reduces total solution board area ? tape and reel packing ? compatible with pick & place equipment ? minimizes part numbers in inventory ? low cost the products: y-series features ? rohs lead-free solder and lead-solder-exempted products are available ? delivers up to 16 a (88 w) ? extended input range 9.6 v ? 14 v ? high efficiency (0.948 at 5 v output) ? surface-mount package ? industry-standard footprint and pinout ? small size and low profile: 1.30? x 0.53? x 0.314? (33.02 x 13.46 x 7.98 mm) ? weight: 0.23 oz [6.50 g] ? coplanarity less than 0.003?, maximum ? synchronous buck converter topology ? start-up into pre-biased output ? no minimum load required ? programmable output voltage via external resistor ? operating ambient temperature: -40 c to 85 c ? remote output sense ? remote on/off (positive or negative) ? fixed-frequency operation ? auto-reset output overcurrent protection ? auto-reset overtemperature protection ? high reliability, mtbf approx. 27.2 million hours calculated per telcordia tr-332, method i case 1 ? all materials meet ul94, v-0 flammability rating ? ul 60950 recognition in u.s. & canada, and demko certification per iec/en 60950 description the YS12S16 non-isolated dc-dc converters deliver up to 16 a of output current in an industry-standard surface- mount package. operating from a 9.6-14 vdc input, the YS12S16 converters are ideal choices for intermediate bus architectures where point-of-load power delivery is generally a requirement. they provide an extremely tight regulated programmable output voltage of 0.7525 v to 5.5 v. the YS12S16 converters provide exceptional thermal performance, even in high te mperature environments with minimal airflow. this is accomplished through the us e of advanced circuitry, packaging, and processing techniques to achieve a design possessing ultra-high e fficiency, excellent thermal management and a very low body profile. the low body profile and the preclusion of heat sinks minimize impedance to system airflow, thus enhancing cooling for both upstream and downstream devices. the use of 100% automation for assembly, coupled with advanced power electronics and therma l design, results in a product with extremely high reliability.
page 2 of 27 YS12S16 dc-dc converter data sheet 9.6-14 vdc input; 0.7525-5.5 vdc programmable @ 16a electrical specifications conditions: t a =25oc, airflow=300 lfm (1.5 m/s), vin=12vdc, vout = 0.7525 - 5.5v, unless otherwise specified. parameter notes min typ max units absolute maximum ratings input voltage continuous -0.3 15 vdc operating ambient temperature -40 85 c storage temperature -55 125 c feature characteristics switching frequency 300 khz output voltage trim range 1 by external resistor, see trim table 1 0.7525 5.5 vdc remote sense compensation 1 percent of v out ( nom ) 0.5 vdc turn-on delay time 2 full resistive load with vin = (converter enabled, then vin applied) from vin = vin(min) to vo=0.1* vo(nom) 3 ms with enable (vin = vin(nom) applied, then enabled) from enable to vo= 0.1*vo(nom) 3 ms rise time 2 (full resistive load) from 0.1*vo(nom) to 0.9*vo(nom) 4 ms on/off control (positive logic) 3 converter off -5 0.8 vdc converter on 2.4 vin vdc on/off control (negative logic) 3 converter off 2.4 vin vdc converter on -5 0.8 vdc additional notes: 1. the output voltage should not exceed 5.5v (taking into a ccount both the programming and remote sense compensation). 2. note that start-up time is the sum of turn-on delay time and rise time. 3. the converter is on if on/off pin is left open.
page 3 of 27 YS12S16 dc-dc converter data sheet 9.6-14 vdc input; 0.7525-5.5 vdc programmable @ 16a electrical specifications (continued) conditions: t a =25oc, airflow=300 lfm (1.5 m/s), vin=12vdc, vout = 0.7525 - 5.5v, unless otherwise specified. parameter notes min typ max units input characteristics operating input voltage range 9.6 12 14 vdc input under voltage lockout turn-on threshold 9 vdc turn-off threshold 8.5 vdc maximum input current 16 adc out @ 9.6 vdc in v out = 5.0 vdc 8.9 adc v out = 3.3 vdc 6 adc v out = 2.5 vdc 4.6 adc v out = 2.0 vdc 3.8 adc v out = 1.8 vdc 3.4 adc v out = 1.5 vdc 2.9 adc v out = 1.2 vdc 2.4 adc v out = 1.0 vdc 2.1 adc v out = 0.7525 vdc 1.7 adc input stand-by current (converter disabled) 3 ma input no load current (converter enabled) v out = 5.0 vdc 83 ma v out = 3.3 vdc 63 ma v out = 2.5 vdc 53 ma v out = 2.0 vdc 47 ma v out = 1.8 vdc 45 ma v out = 1.5 vdc 43 ma v out = 1.2 vdc 41 ma v out = 1.0 vdc 39 ma v out = 0.7525 vdc 35 ma input reflected-ripple current - i s see fig. e for setup. (bw = 20 mhz) v out = 5.0 vdc 60 ma p-p v out = 3.3 vdc 43 ma p-p v out = 2.5 vdc 35 ma p-p v out = 2.0 vdc 35 ma p-p v out = 1.8 vdc 35 ma p-p v out = 1.5 vdc 33 ma p-p v out = 1.2 vdc 23 ma p-p v out = 1.0 vdc 21 ma p-p v out = 0.7525 vdc 19 ma p-p input voltage ripple rejection 120 hz 72 db
page 4 of 27 YS12S16 dc-dc converter data sheet 9.6-14 vdc input; 0.7525-5.5 vdc programmable @ 16a electrical specifications (continued) conditions: t a =25oc, airflow=300 lfm (1.5 m/s), vin=12vdc, vout = 0.7525 - 5.5v, unless otherwise specified. parameter notes min typ max units output characteristics output voltage set point (no load) -1.5 vout +1.5 %vout output regulation over line full resistive load 0.5 mv over load from no load to full load 5 mv output voltage range (over all operating input voltage, resistive load and temperature conditi ons until end of life ) -2.5 +2.5 %vout output ripple and noise - 20mhz bandwidth over line, load and temperature (fig. e) peak-to-peak v out = 0.7525 vdc 12 19 mv p-p peak-to-peak v out = 5.0 vdc 40 65 mv p-p external load capacitance plus full load (resistive) min esr > 1m ? 1,000 f min esr > 10 m ? 5,000 f output current range 0 16 a output current limit inception (i out ) 25 a output short- circuit current , rms value short=10 m ? , continuous 4 a dynamic response load current change from 8a ? 16a, di/dt = 5 a/ s co = 100 f ceramic + 470 f pos 140 mv settling time (v out < 10% peak deviation) 45 s unloading current change from 16a ? 8a, di/dt = -5 a/ s co = 100 f ceramic + 470 f pos 140 mv settling time (v out < 10% peak deviation) 45 s efficiency full load (16a) v out = 5.0 vdc 94.8 % v out = 3.3 vdc 92.5 % v out = 2.5 vdc 90.5 % v out = 2.0 vdc 89.0 % v out = 1.8 vdc 88.0 % v out = 1.5 vdc 86.0 % v out = 1.2 vdc 84.0 % v out = 1.0 vdc 80.5 % v out = 0.7525 vdc 77.0 %
page 27 of 27 YS12S16 dc-dc converter data sheet 9.6-14 vdc input; 0.7525-5.5 vdc programmable @ 16a physical information top view (*) pin # 1 rotated 90 6 side view 345 1(*) 2 ys12s pinout (surface mount) converter part numbering scheme product series input voltage mounting scheme rated load current enable logic rohs compatible ys 12 s 16 ? 0 g y-series 9.6v ? 14v s ? surface mount 16a (0.7525v to 5.5v) 0 ? standard (positive logic) d ? opposite of standard (negative logic) not populated ? rohs lead solder exemption compliant g ? rohs compliant for all six substances the example above describes p/n YS12S16-0g: 9.6v ? 14v input , surface mount, 16a at 0.7525v to 5.5v output, standard enable logic, and rohs compliant for all six s ubstances. please consult fa ctory regarding availability of a specific version. nuclear and medical applications - power-one products are not des igned, intended for use in, or authorized for use as critical components in life support systems, equipment used in hazardous env ironments, or nuclear control systems without the express wr itten consent of the respecti ve divisional president of power-one, inc. technical revisions - the appearance of products, including safety agency certifications pictured on labels, may change dependi ng on the date manufactured. specifications are subject to change without notice. pad/pin connections pad/pin # function 1 on/off 2 sense 3 trim 4 vout 5 gnd 6 vin ys12s platform notes ? all dimensions are in inches [mm] ? connector material: copper ? connector finish: gold over nickel ? converter weight: 0.23 oz [6.50 g] ? converter height: 0.327? max., 0.301? min. ? recommended surface-mount pads: min. 0.080? x 0.112? [2.03 x 2.84]
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