technical enquiries email: sales@murata-ps.com, tel: + 508 339 3000 1 qhs50-6201041525_c01_21/04/08 q-classconverters qhs50-015 model model 1.5v units parameter output voltage setpoint 1.48 ? 1.52 vdc line/load regulation max 0.1%, 0.2% % vo output total regulation 1.45 ? 1.55 vdc output adjust 90-110 %vo,nom remote-sense comp. 10% v output ripple & noise (note 2) max 100 mvp-p output current min 0.1 a max 50 a efficiency (48v, full load, 25c) typ 86% % external capacitance max 10,000 f transient response (typ) (note3) vo 165 mv 25% step, 1a/ s ts 300 s over-voltage trip point static 1.86 ? 2.01 v over-current trip point typ 60 a a ll s p ecifications at ta=25c, vin=48v, 300 lfm unless otherwise s p ecified
murata power solutions 2 qhs50-6201041525_c01_21/04/08 q-classconverters qhs50-015 model parameter conditions min. typ. max. units input input voltage (vin) 36 48 75 vdc reflected ripple current (see note 1) -- -- 10 ma p-p input current 3.3 a inrush transient 0.2 a 2 s input voltage transient 100ms 10% duty cycle 100 v undervoltage lockout turn-on 32 35 vdc turn-off 31 34 vdc over-voltage lockout turn-off 76 80 vdc turn-on 75 79 vdc isolation input-output 1500 vdc resistance; input-output 10 mohm temperature operating ambient -40 -- 85 c storage -40 -- 125 c protection over-temperature measured on pcb -- 120 -- deg c physical information dimensions 2.28?l x 1.45? w x 0.47?h (57.91 x 36.83 x 11.8 mm) mtbf(bellcore) calculated at 40c ambient, 100% ioma x: 1,000,000 hrs safety the qhs50-012 complies with iec/en/csa/ul 60950, provides basic insulation, input to output. c-ul-us (us and canada) reco gnized. tuv (bauart) approved. qhs50-015 thermal derating airflow parallel to vin to vout tj = 120oc 10 15 20 25 30 35 40 45 50 55 25 35 45 55 65 75 85 ambient temperature [oc] output current [a] 100 lfm 200 lfm 300 lfm 400 lfm poly. (100 lfm) qhs50-015 thermal derating v er. orientation (for 0lfm) and hor. orientation (for 50lfm, vin to vout airflow) 0 5 10 15 20 25 30 35 40 45 50 20 30 40 50 60 70 80 90 ambient temperature [oc] output current [a] 0 lfm 50 lfm poly. (50 lfm)
murata power solutions 3 qhs50-6201041525_c01_21/04/08 q-classconverters qhs50-015 model notes : 1. input reflected ripple is specified when measured with the filter shown below. 2. output ripple and noise is specified when measured with a 10uf tantalum and a 1uf ceramic capacitor at the converter output pins. 3. transient response is specified without a capacitor at the 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. 33uf, esr<0.7 ohms @ 100khz vin l2 12uf dc-dc converter rtn 220uf, esr<0.1 ohms @ 100khz i c i s 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 x
murata power solutions 4 qhs50-6201041525_c01_21/04/08 q-classconverters qhs50-015 model output voltage response to step load (27a, +13.5a load step, di/dt = 1a/us, tamb=25c, vin=48v) output ripple and noise (vin=48v, io=50a, 100mz bw) output voltage response to step load (27a, -13.5a load step, di/dt = 1a/us, tamb=25c, vin=48v) qhs50-1.5v efficiency 70 72 74 76 78 80 82 84 86 88 90 10 20 30 40 50 60 iout efficiency 36v 48v 75v
murata power solutions 5 qhs50-6201041525_c01_21/04/08 q-classconverters qhs50-015 model vin = 48v iout = 55a local o/p sensing vin = 48v iout = 0a local o/p sensing startup characteristics input reflected ripple (vin=48v, iout=50a, 2ma/div., 100us & 10us/div.) turn-off characteristic vin = 48v iout = 55a 10mf output capacitance vin = 48v pre-bias of 0.9v pre-bias startup characteristic
murata power solutions 6 qhs50-6201041525_c01_21/04/08 q-classconverters qhs50-015 model conducted emi characteristic with external filter as specified peak noise @ iout = 50 amps safety considerations the qhs series of converters comply with iec/en/csa/ul 60950, providing basic insulation, input to output. c-ul-us (us & canada) and tuv approved. if this product is built into information technology equi pment, the installation must comply with the above standard. an external input fuse (5a to 30a recommended) must be used to meet the above requirements. the output of the converter [vo(+)/vo(-)] is considered to remain within selv limits when the input to the converter meets selv or tnv-2 requirements. qhs50-015 trim-up and trim-down resistance 10 100 1000 0246810 delta (%) resistance (kohms) rup rdown
murata power solutions 7 qhs50-6201041525_c01_21/04/08 q-classconverters qhs50-015 model rohs compliant the qhs55-015 series of converters is in compliance with the european union directiv e 2002/95/ec (rohs) with respect to the following sustances: lead (pb), mercury (hg), cadmium (cd), hexavalent chromium, polybrominated biphenyls (pbb) or polybrominated diphenyl ethers (pbde). part number designations
|
