rev:20130813a page 1 of 7 isolated dc - dc converters bqa3r series -- 3 watt f ea tures wide 2 : 1 input voltage range(4.5~9v,9~18v,18~36v,36~75v) in p ut / output isolation voltage: 1.5k vdc extended operating temperature range: -40c to +85c output short circuit protection: continuous & auto recovery over voltage protection: clamp mode ul94v-0 package material lead free design, rohs compliant 24pin dip package with industry-standard footprint customer design available safety standard / approval : iec / en 60950-1 te c hnical specification all specifications are typical at nominal input, full load and 25c unless otherwise stated. output current (ma) input current (ma) model number input voltage range output voltage (v) min. load ( 1) full. load no load full load eff . ( 2 ) (%) capacitive load, max. (3) ( uf) 3.3 0 6 0 0 46 5 5 2 76 4000 5 0 5 0 0 44 6 4 6 81 4000 12 0 2 5 0 62 7 6 9 82 4000 15 0 2 0 0 67 7 6 0 83 4000 5 0 2 50 55 6 3 8 82 1000 12 0 1 25 83 7 6 6 82 1000 bqa3-05s0r bqa3-05s1r bqa3-05s2r bqa3-05s3r bqa3-05d1r bqa3-05d2r bqa3-05d3r 4.5~9v n o minal:5v 15 0 100 89 7 6 5 82 1000 bqa3-12s0r 3.3 0 6 0 0 26 2 2 3 78 4000 bqa3-12s1r 5 0 5 0 0 24 263 83 4000 bqa3-12s2r 12 0 2 5 0 35 314 84 4000 bqa3-12s3r 15 0 2 0 0 36 311 84 4000 bqa3-12d1r 5 0 2 50 29 262 83 1000 bqa3-12d2r 12 0 1 25 44 313 84 1000 bqa3-12d3r 9~18v n o minal:12v 15 0 100 59 317 83 1000 bqa3-24s0r 3.3 0 6 0 0 20 112 78 4000 bqa3-24s1r 5 0 5 0 0 23 133 82 4000 BQA3-24S2R 12 0 2 5 0 26 157 84 4000 bqa3-24s3r 15 0 2 0 0 26 156 84 4000 bqa3-24d1r 5 0 2 50 22 133 83 1000 12 0 1 25 30 159 83 1000 bqa3-24d2r bqa3-24d3r 18~36v n o minal:24v 15 0 100 40 160 82 1000 bqa3-48s0r 3.3 30 6 0 0 10 57 76 4000 bqa3-48s1r 5 0 5 0 0 9 67 81 4000 bqa3-48s2r 12 0 2 5 0 11 79 83 4000 bqa3-48s3r 15 0 2 0 0 12 79 83 4000 bqa3-48d1r 5 0 2 50 10 67 82 1000 bqa3-48d2r 12 0 1 25 14 79 82 1000 bqa3-48d3r 36~75v n o minal:48v 15 0 100 18 80 82 1000 description the bqa3r series are isolated 3w dc/dc converters. designed with highly efficiency, allow the operating temperature range of these units to be -40c to +85c in a 24 pin dip package with industry-standard footprint. further features include wide 2 : 1 input voltage range, short-circuit protection and over voltage protection. applications these converters are well suitable for battery operated equipment, measurement equipment, telecom, wireless network, industry control system, everywhere where isolated, tightly regulated voltages and compact size are required. bothhand usa sales@bothhandusa.com www.bothhandusa.com
rev:20130813a page 2 of 7 isolated dc - dc converters bqa3r series -- 3 watt input specifications input voltage 5 v nominal input 4.5-9v 1 2 v nominal input 9-18v 24v nominal input 18-36v 4 8 v nominal input 36-75v input filter p i type 5 v input 10v 1 2 v input 25v input surge voltage 24v input 50v (100ms max.) 4 8 v input 100v input reflected ripple current n o minal vin and full load 100map-p max. start up time n o minal vin and constant resistive load 100ms max. environmental specifications operating ambient temperature - 4 0c to +85c (with derating ) maximum case temperature + 9 0c storage temperature range - 4 0c to +125c relative humidity 5 % to 95% rh temperature coefficient 0 .02% / c max. output specifications output power 3 watts max. voltage accuracy full load and nominal vin 1% minimum load s e e table line regulation l l to hl at full load 0.5% 25% load to full load single 0 .5% balanced load dual 0 .5% load regulation unbalanced load 25% to 100% full load 3% ripple and noise 20mhz bandwidth 60mvp-p max. 3 . 3vout models 3.9v over voltage protection 5 v out models 6.2v (zener diode clamp) 1 2 vout models 15v 1 5 vout models 18v capacitive load s e e table over load protection % of full load at nominal input 110% typ. short circuit protection c o ntinuous, automatic recovery transient response settling time 50% load step change 4 6 ms max. transient response over shoot d i /dt=0.8a/ s 5% of vo bothhand usa sales@bothhandusa.com www.bothhandusa.com
rev:20130813a page 3 of 7 isolated dc - dc converters bqa3r series -- 3 watt 0 20 40 60 80 100 120 - 40 - 20 0 20 40 60 80 100 120 71 general specifications efficiency n o minal input see table isolation voltage i n put to output 1500v dc isolation resistance 5 0 0vdc 10 9 ohms min. isolation capacitance 2 8 0pf typ. switching frequency 1 5 0khz typ. . reliability, calculated mtbf 1 . 1 10 6 hrs physical specifications case material n o n-conductive black plastic base material n o n-conductive black plastic potting material s i licon rubber (ul94v-0) 1 . 25 0.80 0.40 inch es dimensions ( 3 1.8 20.3 10.2 mm) weight 12.8g (0.45oz) (typical) bqa3r series power derating curve ( 4 ) ambient temp.ta ( ) bqa3-48s1r bqa3-48s1r input voltage vs. efficiency output current vs. efficiency input voltage (v) output current (a) output power (%) efficiency (%) efficiency (%) bothhand usa sales@bothhandusa.com www.bothhandusa.com
rev:20130813a page 4 of 7 isolated dc - dc converters bqa3r series -- 3 watt b q a3-48s1r bqa3-48s1r transient response at 50%~100% max load l o op gain & phase at vi=48v,full load note 1. io below this value will not damage these converters, however, they may not meet all listed specifications. 2. typical value, tested at nominal input and full load. 3. for each output. 4. based on bqa3-48s1r. mechanical dimensions sp e cifications subject to change without notice. pin assignment pin single d u al 2 -vin - v in 3 -vin - v in 9 no pin common 11 no con. -vout 14 +vout + v out 16 -vout common 22 +vin + v in 23 +vin + v in unit: mm [inch] t o lerance: 0.5[0.02] bothhand usa sales@bothhandusa.com www.bothhandusa.com
rev:20130813a page 5 of 7 isolated dc - dc converters bqa3r series -- 3 watt test configurations a l l specifications are typical at nominal input, full load and 25c unless otherwise stated. dc power supply: it offers a wide voltage and current range precisely. current meter (a): accuracy 200a ~ 200ma 4 ranges+ (0.2% rdg + 2 digits) 2 0 00ma ~ 20a 2 ranges+ (0.3% rdg + 2 digits). v o ltage meter (v): accuracy + (0.03% rdg + 4 digits). l o ad: at full load. wires: the resistance of the wires must be small. 1. input voltage range: n arrow input voltage range 10 % wide input voltage range (2:1 and 4:1 ex: narrow input voltage range 10% 5v nominal input 4.5~5.5v 12v nominal input 10.8~13.2v 24v nominal input 21.6~26.4v wide input voltage range 2:1 5v nominal input 4.5~9v 12v nominal input 9~18v 24v nominal input 18~36v 48v nominal input 36~75v wide input voltage range 4:1 (w) 24v nominal input 9~36v 48v nominal input 18~75v 2. input power : pin = vin x iin vin inp ut voltage iin input current 3. output power : pout = vout x iout vout out put voltage iout output current 4. efficiency : pout: output power pin : input power 5. voltage accuracy : v o ut output voltage vo ut(nominal) nominal output voltage dc power supply a v load dc/dc converter v a dc power supply a v load dc/dc converter v a v out-vout(nominal) vout x 1 00% efficiency = x100% pout p i n bothhand usa sales@bothhandusa.com www.bothhandusa.com
rev:20130813a page 6 of 7 isolated dc - dc converters bqa3r series -- 3 watt noise ripple ripple & no ise 6 . line regulation : (1) wide input voltage range and regulated output vol tage series. (2) narrow input voltage range 1 0 % and unregulated output voltage series. ? vout = vout(+10%)-vout(-10%) x100% v o ut vout(+10%) output voltage at vin = 1.1xvin(nominal)&full load vout(-10%) output voltage at vin = 0.9xvin(nominal)&full load vout output voltage at vin = vin(nominal)&full load ? vin = vin(+10%)-vin(-10%) x100% v i n(nominal) vin(+10%) input voltage = 1.1xvin(nominal) vin(-10%) input voltage = 0.9xvin(nominal) vin(nominal) nominal input voltage 7. load regulation : v out(fl)-vout(nl) x100% v o ut(fl) vout(fl): output voltage at full load vout(nl): output voltage at 25% full load or 10% full load 8. ripple and noise : a s shown below. the bandwidth is 0-20mhz. v out(ll)-vout(hl) vout(ll) l l : low line input voltage hl: high line input voltage x100% v out v in line regulation = bothhand usa sales@bothhandusa.com www.bothhandusa.com
rev:20130813a page 7 of 7 isolated dc - dc converters bqa3r series -- 3 watt o u tput ripple&noise measurement test circuit: as shown below. co: usually 0.47uf. 9. temperature derating curve : t he dc-dc converter will operate over a wider temperat ure range if less power is drawn from the output and the device is already running. the temperature derating curve shows the operating power-temperature range. as shown below. ambient temp.ta ( ) 1 0. switching frequency : t he nominal operating frequency of the dc-dc converter s. 11. i nput to output isolation : t he dielectric breakdown strength test between input a nd output circuits. this is the isolation voltage the device is capable of withstanding for a specified time, usually 1 second or 1 minute. load dc/dc converter oscilloscope copper strip copper strip co load dc/dc converter oscilloscope copper strip copper strip load dc/dc converter oscilloscope copper strip copper strip co output power (%) bothhand usa sales@bothhandusa.com www.bothhandusa.com
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