qhs25 series high efficiency 25a q uarter-brick converters 1150 eglinton avenue east toronto, ontario m3c 1h7 1-866-740-1232 4607 s.e. international way milwaukie, oregon 97222 1-971-206-2800 www.cdtechno-cps.com page 1 qhs25-6200011259 _ c05 _ nov.4 , 2004 parameter conditions min. typ. max. units input input voltage (vin) 36 48 75 vdc input ripple current see note (1) -- 10 -- ?ma p-p inrush transient 0.2 a 2 s undervoltage lockout turn-on 32 35 vdc turn-off 31 34 vdc over-voltage lockout turn-off 78 80 vdc turn-on 77 79 vdc isolation input-output input-case output-case 1500 1500 500 vdc resistance; input-output 10 mohm temperature operating base-plate -40 -- 100 c storage -40 -- 125 c protection over-temperature tbase-plate 105 115 deg c physical information dimensions 2.28?l x 1.45? w x 0.5?h (57.9 x 36.83 x 12.7 mm) mtbf(bellcore) calculated at 40c, 80% iomax: 1,000,000 hrs safety designed to meet ul1950, csa 950, en60950 with basic insulation features: 9 very high efficiency: to 88% 9 very high density: 25a in quarter-brick 9 1.8v, 2.5v, 3.3v models 9 industry-standard pin-out model 3.3v 2.5v 1.8v units parameter output voltage setpoint 3.25 ? 3.35 2.47 ? 2.52 1.78 ? 1.82 vdc line/load regulation max 0.1%, 0.2% 0.1%, 0.2% 0.1%, 0.2% % vo output total regulation 3.2 - 3.4 2.43 ? 2.57 1.75 ? 1.85 vdc output adjust 90-110 90-110 90-110 %vo,nom remote-sense comp. 0.5 0.5 0.18 v output ripple & noise (note 2) max 100 100 100 mvp-p output current min 0.5 0.5 0.5 a max 25 25 25 a efficiency (48v, full load, 25c) typ 88% 86% 84% % external capacitance max 10,000 10,000 10,000 f transient response (typ) (3) ? vo 165 165 165 mv 25% step, 1a/ s, 50c bp ts 400 400 400 s over-voltage trip point 3.96-4.29 3.1 ? 3.4 2.4 ? 2.7 v over-current trip point max 35 35 35 a
qhs25 series high efficiency 25a q uarter-brick converters 1150 eglinton avenue east toronto, ontario m3c 1h7 1-866-740-1232 4607 s.e. international way milwaukie, oregon 97222 1-971-206-2800 www.cdtechno-cps.com page 2 qhs25-6200011259 _ c05 _ nov.4 , 2004 mechanical information notes : 1. input reflected ripple is specified wh en measured with the filter shown below 2. output ripple and noise is specified when m easured with a 10uf electrolytic and a 1uf ceramic capacitor at the converter output pins 3. transient response is specified with a 470uf tantalum capacitor at t he output of the converter 4. the enable signal is logic low. it is referenced to vi-. the pin should be tied to vi- if it is not used. isink = 1ma max, voff = 15v max 220uf 33uf, esr 0.7 ohm 12uh input output pin assignments pin # description pin # description pin # description 1 vin (+) 4 vout(-) 7 sense + 2 enable 5 sense - 8 vo (+) 3 vin(-) 6 vo adj
qhs25 series high efficiency 25a q uarter-brick converters 1150 eglinton avenue east toronto, ontario m3c 1h7 1-866-740-1232 4607 s.e. international way milwaukie, oregon 97222 1-971-206-2800 www.cdtechno-cps.com page 3 qhs25-6200011259 _ c05 _ nov.4 , 2004 current derating curve (3.3v) ? no heatsink current derating curve (2.5v) ? no heatsink 0 5 10 15 20 25 30 20 30 40 50 60 70 80 90 100 local ambient temperature (*c) output current (a) 100lfm 200lfm 300lfm 400lfm current derating curve (1.8v) ? no heatsink qhs25-033 input voltage-cu rrent characteristic qhs25-025 input voltage-cu rrent characteristic 0 0.5 1 1.5 2 2.5 3 22 26 30 34 38 42 46 50 54 58 62 66 70 74 78 82 86 input voltage (v) input current (a) 0 0.5 1 1.5 2 2.5 22 26 30 34 38 42 46 50 54 58 62 66 70 74 78 82 86 input voltage (v) input current (a) 0 5 10 15 20 25 30 20 30 40 50 60 70 80 90 100 ambient temperature (*c) output current (a) 100 lfm 200 lfm 300 lfm 400 lfm 0 5 10 15 20 25 30 20 30 40 50 60 70 80 90 100 ambient temperature (*c) output current (a) 100 lfm 200 lfm 300 lfm 400 lfm
qhs25 series high efficiency 25a q uarter-brick converters 1150 eglinton avenue east toronto, ontario m3c 1h7 1-866-740-1232 4607 s.e. international way milwaukie, oregon 97222 1-971-206-2800 www.cdtechno-cps.com page 4 qhs25-6200011259 _ c05 _ nov.4 , 2004 50 55 60 65 70 75 80 85 90 95 2.5 5 7.5 1012.51517.52022.525 output current (a) efficiency (%) 48v 36v 75v efficiency of qhs25-033 50 55 60 65 70 75 80 85 90 95 5 10152025 output current (a) efficiency (%) 48v 35v 75v efficiency of qhs25-025 efficiency of qhs25-018 50 55 60 65 70 75 80 85 90 0 5 10 15 20 output current (a) efficiency (%) 48v 36v 75v
qhs25 series high efficiency 25a q uarter-brick converters 1150 eglinton avenue east toronto, ontario m3c 1h7 1-866-740-1232 4607 s.e. international way milwaukie, oregon 97222 1-971-206-2800 www.cdtechno-cps.com page 5 qhs25-6200011259 _ c05 _ nov.4 , 2004 plot of resistance required to adjust output voltage turn-on waveform (48vin, 3.3v model, 25a ou tput, 50c baseplate) trim value vs resistance radj_up 5.1vo 1.225 (100+ ?% 10.22 radj_down ?%) ?% 511 ?% 10.22 511 kohm kohm turn-on waveform (48vin, 2.5v model, 25a ou tput, 50c baseplate)
qhs25 series high efficiency 25a q uarter-brick converters 1150 eglinton avenue east toronto, ontario m3c 1h7 1-866-740-1232 4607 s.e. international way milwaukie, oregon 97222 1-971-206-2800 www.cdtechno-cps.com page 6 qhs25-6200011259 _ c05 _ nov.4 , 2004 step load response (50% to 75% load) (48vin 3.3v model) step load response (50% to 25%% load) (48vin 3.3v model) step load response (50% to 75% load) (48vin 2.5v model) step load response (50% to 25% load) (48vin 2.5v model)
qhs25 series high efficiency 25a q uarter-brick converters 1150 eglinton avenue east toronto, ontario m3c 1h7 1-866-740-1232 4607 s.e. international way milwaukie, oregon 97222 1-971-206-2800 www.cdtechno-cps.com page 7 qhs25-6200011259 _ c05 _ nov.4 , 2004 c3 100uf +48volts . l2 10uh c1 1uf . l1 qhs25-033 rtn c6 4.7nf c7 4.7nf c5 1uf 800uh emi filter requirements to meet en55022 safety considerations the qhs25 series of converters are certified by csa to can/csa-c22.2 no. 950.95 and ansi/ul std no. 1950, 3 rd ed. with basic insulation , input to output. the qhs25 series bears the marking of canada and usa approval. even though the qhs25 is approved with no fuse requir ement, an external fast-blow input fuse is recommended. the output of the converter is considered to remain within selv limits when the input to the converter meets selv requirements. the converters meet ul 94v-0 flammability ratings. part number designations qhs25 - xxx - ab xxx = output voltage combinations ?033 = 3.3v; 025 = 2.5v; 018 = 1.8v a = reserved; 0 = default b = pin length a = 0.110? b = 0.145? c = 0.200?
qhs25 series high efficiency 25a q uarter-brick converters 1150 eglinton avenue east toronto, ontario m3c 1h7 1-866-740-1232 4607 s.e. international way milwaukie, oregon 97222 1-971-206-2800 www.cdtechno-cps.com page 8 qhs25-6200011259 _ c05 _ nov.4 , 2004 qhs25-033 airflow characterization with 0.45" heatsink (intricast) 0 5 10 15 20 25 20 30 40 50 60 70 80 90 100 ambient temperature (*c) output current (a) 100 lfm 300 lfm 200 lfm qhs25-025 airflow characterization w/ 0.45" heatsink (intricast) 0 5 10 15 20 25 20 30 40 50 60 70 80 90 100 ambient temperature (*c) output current (a) 100 lfm 300 lfm 200 lfm thermal performance with heatsinks qhs25-033 airflow characterization with 0.23" heatsink (intricast) 0 5 10 15 20 25 20 30 40 50 60 70 80 90 100 local ambient temperature (*c) output current (a) 100 lfm 300 lfm 200 lfm qhs25-025 airflow characterization with 0.23" heatsink (intricast) 0 5 10 15 20 25 20 30 40 50 60 70 80 90 100 local ambient temperature (*c) output current (a) 100 lfm 300 lfm 200 lfm the above data was taken with the following heatsinks: 1. 0.23? tall intricast p/n: hs2065dc 2. 0.45? tall intricast p/n: hs2066dc parts can be obtained from: intricast co., inc 2160 walsh ave. santa clara, ca 95050-2512 tel: 408-988-6200 c&d technologies, inc. reserves the right to alter or improve the specification, inte rnal design or manufacturing process at an y time, without notice. please check with your supplier or visit our website to ensure that you have the current and complete specification for your pr oduct before use. ? c&d technologies, inc. 2004 no part of this publication may be copied, transmitted, or stored in a retrieval system or reproduced in any way including, but not limited to, photography, photocopy, magnetic or other recording means, wi thout prior written permission from c&d technologies, inc. instructions for use are available from: www.cdtechno-cps.com
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