ver : d_2 update : 2016.09.01 encapsulated dc-dc converter st20 series 20 watts http://www.archcorp.com.tw tel: +886-2-26989508 fax: +886-2-26981319 -1- electrical specifications model no. st20-24-2.5s st20-24-3.3s st20-24-5s max. output wattage (w) 12.5w 14w 20w input voltage (v.dc.) 24v (18-36v) 24v (18-36v) 24v (18-36v) outut voltage (v.dc.) 2.5v / 4000ma 3.3v / 4000ma 5v / 4000ma efficiency 83% 86% 87% model no. st20-48-2.5s st20-48-3.3s ST20-48-5S max. output wattage (w) 12.5w 14w 20w input voltage (v.dc.) 48v (36-75v) 48v (36-75v) 48v (36-75v) outut voltage (v.dc.) 2.5v / 4000ma 3.3v / 4000ma 5v / 4000ma efficiency 83% 86% 87% model no. st20-24-2.5s st20- 24-3.3s st20-24-5s st20-48-2. 5s st20-48-3.3s ST20-48-5S max output wattage (w) 12.5w 14w 20w 12.5w 14w 20w input input filter ? type voltage (v.dc.) 2.5 3.3 5 2.5 3.3 5 voltage accuracy ? 2% current (ma) max 4000 4000 4000 4000 4000 4000 line regulation (ll-hl) (typ.) ? 0.5% load regulation (10-100%) (typ.) ? 1% ripple 110mv max (vp-p) noise 200mv max (vp-p) efficiency 83% 86% 87% 83% 86% 87% output switching frequency 400khz over power protection works over 120% of rating and recovers automatically. over voltage protection zener diode clamp short circuit protection current limit, auto-recovery protection transient response Q 500 us (100% to 50% full load at ? 1% error band) voltage 1600 vdc. resistance 10 8 ohms isolation capacitance 1000 pf operating temperature -25c?+70c (with derating) storage temperature -55c?+105c case temperature +100c max. temperature coefficient ? 0.02% perc humidity 95% rh environment mtbf >550,000 h @ 25c (mil-hdbk-217f) dimension (l x w x h) 1.97 x 1.0 x 0.425 inches ( 50 .1 x 25.4 x 10.8 mm ) tolerance ? 0.5 mm case material six-side shielded aluminum with non-conductive base, black anodize weight 32 g physical cooling method free-air convection safety agency approvals ce, ul emc emi (conducted & radiated emission) en 55022 class a key features ? power module for pcb mountable ? 2:1 input range ? synchronous rectifier topology ? regulated output ? low ripple and noise ? screw terminal for optional ? remote on/off control (optional) ? standard 2? x 1? package and pinout ? ce, ul approval ? 3-years product warranty 1.all specifications valid at normal input voltage, full lo ad and +25c after warm-up time unless otherwise stated. 2.ripple & noise are measured at 20mhz of bandwidth with 0.1 u f & 47uf parallel capacitor.
ver : d_2 update : 2016.09.01 encapsulated dc-dc converter st20 series 20 watts http://www.archcorp.com.tw tel: +886-2-26989508 fax: +886-2-26981319 -2- mechanical dimension ( top view ) remote on/off control control pin is not available for standard st20 models add suffix ?r for models with control pin derating block diagram pin# single 1 on / off ctl (optional) 2 -dc in 3 +dc in 4 -dc out 5 no pin 6 +dc out
ver : d_2 update : 2016.09.01 encapsulated dc-dc converter st20 series 20 watts http://www.archcorp.com.tw tel: +886-2-26989508 fax: +886-2-26981319 -3- screw terminal st20-a2 pin# single dual 1 ctrl ctrl 2 -dc in -dc in 3 +dc in +dc in 4. -dc out -dc out 5 no connect no connect 6 no connect common 7 no connect no connect 8 +dc out +dc out st20-a5 pin# single dual 1 ctrl ctrl 2 -dc in -dc in 3 +dc in +dc in 4. -dc out -dc out 5 no connect no connect 6 no connect common 7 no connect no connect 8 +dc out +dc out
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