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mcd10166 rev. 1.0, 04-jun-10 page 1 of 12 www.power-one.com hwd dc-dc series data sheet applications distributed power architectures telecommunications equipment lan/wan applications data processing applications features ? rohs lead solder exemption compliant 75 watts total output power wide input range 18 v ? 60 v independent dual outputs flexible load sharing open-frame design with ims board low profile ? 12.7 mm height start-up into high capacitive load output overcurrent pr otection (self restart) output overvoltage prot ection (self restart) overtemperature protection (self restart) setpoint accuracy ? 2.0% output voltage trim adjust, independent for each output input/output isolation: 1500 v ul 1950 recognition, csa 22.2 no. 950-95 certification description the hwd series provides onboard conv ersion of standard telecom and datacom input voltages into two isolated low-voltage outputs. these products offer a unique combinat ion of wide input range, low profile, and high current capability. high efficiency and advanced thermal management enable these half-brick products to deliver full rated power at 55 c ambient temperature with 200 lf m airflow (without the addition of heat sinks). model selection model input voltage range, vdc input current, max, adc output voltage, vdc output rated current, adc output ripple and noise, mv p-p efficiency % HWD075DGE-A 18-60 5.5 5.0/3. 3 15/15 100 81% @ 24 vin 79% @ 48 vin model numbers highlighted in yellow or shaded are not recommended for new designs.
mcd10166 rev. 1.0, 04-jun-10 page 2 of 12 www.power-one.com hwd dc-dc series data sheet table 1. absolute maximum ratings paramete r symbol min max units input voltage continuous transient (100 msec) vi vi - - 60 100 vdc vdc operating basepl ate temperature note 1 tb -40 +100 ? c storage temperature tstg -55 +125 ? c input to output isolation - - 1500 vdc output short circuit duration - - continuous - total output power p o max - 75 w no load power dissipation - 6 w electrical specifications unless otherwise indicated, specifications apply over all input voltages, resistive load, and tbp=+40 ? c. table 2. input specifications paramete r symbol min typ max units voltage range vi 18* 24/48 60 vdc maximum input current ii - - 5.5 a input ripple rejection (120 hz) - 60 - db inrush transient - - 1 a 2 s input reflected ripple (see figure 1) - - 250 ma p-p ? module will operate within specification with an input voltage of 18 vdc, but must be turned on with an input voltage > 19.5 v dc. see undervoltage lockout specification. fusing considerations caution this dc-dc converter is not inte rnally fused. an external input fuse must always be used.
mcd10166 rev. 1.0, 04-jun-10 page 3 of 12 www.power-one.com hwd dc-dc series data sheet table 3. output specifications paramete r symbol min typ max units output power po1 po2 po1+po2 - - - - - - 75 50 75 w w w output voltage set point (vi=24 vdc or vi=48 vdc, io1,io2=7.5a) vo1 vo2 4.9 3.23 5.0 3.3 5.1 3.37 vdc vdc output line regulation: (vi=vi,min to vi,max) (io1, io2=7.5a) vo1,vo2 - 0.05 0.2 % output load regulation: (io,min to io,max) vo1,vo2 - 0.5 1 % output temperat ure regulation: (tbase =-40 ? c to +100 ? c) all outputs - 0.02 0.05 %/ ? c output current (maximum output power limited to 75 w) io1 io2 0.5 0.5 7.5 7.5 15 15 a a output ripple (see figure 2) (dc to 20 mhz) (io1,io2 = 7.5 a) vo1 vo2 - - 75 75 100 100 mvp-p mvp-p output current limit inception (other outputs at no load) io1 io2 - - 17 21 19 23 a a transient response (50% to 100% load step, ? io/ ? t=0.1a/usec) peak deviation settling time (vo, 1% of vo1) vo1 vo2 - - - 100 200 150 200 300 250 mv mv ? sec overvoltage limit vo1,clamp vo2,clamp 5.9 3.6 - - 6.5 4.7 vdc vdc table 4. feature specifications paramete r symbol min typ max units remote on/off, primary side vlow vhigh sink current-logic low - - - - - - 1 7 2 v v ma turn-on time (within 1% v o nom) - 3.5 5 msec switching frequency - 350 - khz output voltage adjust adjust up adjust down vo1 vo2 vo1 vo2 5.39 3.55 4.41 2.91 5.5 3.63 4.5 2.97 5.61 3.71 4.59 3.03 vdc vdc vdc vdc thermal shutdown +105 +115 ? c undervoltage lockout turn-on turn-off - 16.5 19.2 16.8 19.5 - v v
mcd10166 rev. 1.0, 04-jun-10 page 4 of 12 www.power-one.com hwd dc-dc series data sheet table 5. environmental parameter min typ max units operating baseplate te mperature -40 - +100 ? c operating humidity (non-condensing) - - 95 % storage humidity (non-condensing) - - 95 % table 6. isolation specifications paramete r min typ max units input to each output 1500 - - vdc input to baseplate 1500 - - vdc output to output - - - vdc resistance, input - output 10 - - m ? capacitance, input - output - 2200 - pf table 7. emi and regulatory agency compliance conducted emissions (with input filter conf iguration in figure 3.) cispr 22 class a safety ul60950 recognized, can/csa c22.2 no. 60950-00 recognized table 8. general specifications parameter min typ max units efficiency ? (vi=24 vdc, io1,io2 = 7.5 a) (vi=48 vdc, io1,io2 = 7.5 a) 79 77 81 79 - - % calculated mtbf (po=60 w, tbp=40 ? c) - 900 - khrs table 9. physical parameter units dimensions 2.30 ( 58.4) 2.40 (60.9) 0.50 (12.70) in (mm) weight 2.4(68) oz(g) markings & labeling includes part number, power-one logo, date code and country of manufacture
mcd10166 rev. 1.0, 04-jun-10 page 5 of 12 www.power-one.com hwd dc-dc series data sheet mechanical diagram pin function 1 -vin 2 case 3 on/off 4 +vin 5 +vo2 6 +vo2 rtn 7 trim 2 8 +vo1 9 +vo1 rtn 10 trim 1 table 10. ordering information options suffixes to add to part number remote on/off positi ve- standard, no suffix required negative- add ?n? suffix trim negative- standard, no suffix required pin length 0.18?- standard, no suffix required 0.11?- add ?8? suffix 0.15?- add ?9? suffix notes 1. consult factory for the comp lete list of available options.
mcd10166 rev. 1.0, 04-jun-10 page 6 of 12 www.power-one.com hwd dc-dc series data sheet test setup figure 1. input reflected ripple current test set-up note: measure input reflected-ripple current with a simulated induc tance (ltest) of 12 h. capacitor cs offsets possible battery impedance. measure current as shown above. figure 2. output ripple measurement test set-up note: use a 0.1f ceramic and 22f tantalum capacitor. scope m easurement should be made using a bnc socket. position loads between 51 mm and 76 mm (2 in. and 3 in.) from module. battery cs 220 uf esr < 0.1 ohm @ 20 oc, 100 khz ltest 12 uh 22uf esr < 0.7 ohm @ 20 oc, 100 khz vi(+) vi(-) to current probe dut load1 load2 0.1uf ceramic 0.1uf ceramic scope scope copper strips (2 to 3 inches) +vo1 -vo1 +vo2 -vo2 22uf tantalum 22uf tantalum
mcd10166 rev. 1.0, 04-jun-10 page 7 of 12 www.power-one.com hwd dc-dc series data sheet hwd15dge c1 vin+ vin- + - vin c2 fc100v10 case gnd c3 c4 c5 c6 vo1 -vo1 vo2 -vo2 load1 load2 figure 3. input filter configuration required to meet cispr 22 class a for conducted emissions table 11.part list for input filter ref. des description manufacture c1, 2 0.47uf @100v mlc capacitor (1812) avx or equivalent (equiv.) c3 100uf @ 100v alum. electrolytic capac itor nichicon nrsz series or equiv. c4 22uf@ 100v alum. electrolytic capacitor united chemicon kmg series or equiv. c5, 6 0.01uf mlc capacitor avx or equiv. f1 fc100v10 input filter module power-one feature descriptions output overvoltage clamp the output overvoltage clamp consists of a separate cont rol loop, independent of the primary control loop. this control loop has a higher voltage setpoint than the primary loop. in a fault condition the converter goes into ?hiccup mode?, and the output overvoltage clamp ensures that the output voltage does not exceed vo,clamp,max. this secondary control loop provides a redundant voltage control that reduces the ri sk of output overvoltage. output current protection to provide protection in an output overload or short circui t condition, the converter is equipped with current limiting circuitry and can endure the fault condition for an unlimited duration. at the point of current-limit inception, the converter goes into ?hiccup mode?, causing the output current to be limited both in peak and duration. the converter operates normally once the output curr ent is brought back into its specified range. enable two enable options are available. positive logic enable and negative logic enable. positive logic enable turns the converter on during a logic-high voltage on the enabl e pin, and off during a logic-low. negative logic enable turns the converter off during a logic-high and on during a logic-low.
mcd10166 rev. 1.0, 04-jun-10 page 8 of 12 www.power-one.com hwd dc-dc series data sheet output voltage adjustment output voltage adjustment is accompli shed by connecting an external resistor between the trim pin and either the +vo1 or ?vo1 pins. with an external resistor between the trim pin and +vo1 pin (radj-down) the output voltage set point (vo,adj) decreases. the following equation determines the required ex ternal resistor value to obtain an adjusted output voltage: radj, dn= [ b - , - , ) - , ( adj vo nom vo a d adj vo ] ohm where radj-down is the resistance val ue and a, b, and d are defined in table 7. with an external resistor between the trim pin and ?v o1 pin (radj-up) the output voltage set point (vo,adj) increases. the following equation determines the required ex ternal resistor value to obtain an adjusted output voltage: radj, up= [ b - c - d) - , ( d ? adj vo a ] ohm where radj-up is the resistance value and a, b, c, and d are defined in table 12. table 12.output adjustment variables output a b c d vo1 4990 2000 2.5 2.5 vo2 4990 2000 0.8 2.5 thermal considerations the power converter operates in a variety of thermal en vironments: however, sufficient cooling should be provided to help ensure reliable operation of the converter. heat-d issipating components are thermally coupled to the case. heat is removed by conduction, c onvection, and radiation to the surroun ding environment. proper cooling can be verified by measuring the case temperature. heat transfer characteristics increasing airflow over the converter enhances the heat transfer via convection. figure 4 shows the maximum power that can be dissipated by the converter without exceeding the maximum case temperature versus local ambient temperature (t a ) for natural convection through 400 ft/min. systems in which these converters are used generate airflow rates of 50 ft/min due to other heat dissipating components in the system. therefore, the natural convection condition represents airflow rates of approximately 50 ft/min. use of figure 4 is shown in the following example. example what is the minimum airflow required for the device operating at 24 v, an output pow er of 60 w, and maximum ambient temperature of 60 oc. solution: given: vi = 24 v, po = 60 w, t a = 60 oc. determine p d (figure 4): p d = 13 w. determine airflow (figure 4): v = 200 ft/min
mcd10166 rev. 1.0, 04-jun-10 page 9 of 12 www.power-one.com hwd dc-dc series data sheet hwd15dge power dissipation vs output power 0 2 4 6 8 10 12 14 16 18 20 0 10 20 30 40 50 60 70 output power (w) po we r di ss ip ati on (w ) vinmin vinnom1 vinnom2 vinmax hwd15dge - power derating 0 2 4 6 8 10 12 14 16 18 20 22 0 102030405060708090100 ambient temperature (c) power dissipation (w) natural 100 lfm 200 lfm 300 lfm 400 lfm figure 4. power derating curve figure 5. power dissipation vs. output power
mcd10166 rev. 1.0, 04-jun-10 page 10 of 12 www.power-one.com hwd dc-dc series data sheet hwd15dge power dissipation vs full load power distribution 0 2 4 6 8 10 12 14 16 18 20 15/0.5 7.5/7.5 0.5/15 output load, io1/io2 (a) po we r di ss ip ati on (w ) vinmin vinnom1 vinnom2 vinmax hwd15dge efficiency vs output power 55 60 65 70 75 80 85 90 0 10 20 30 40 50 60 70 output power (w) ef f ici en cy (% ) vinmin vinnom1 vinnom2 vinmax figure 6. power dissipation vs. full-load distribution characteristic curves tb = 40 oc, nominal input voltage, and rated load unless otherwise specified. figure 7. efficiency vs. output power
mcd10166 rev. 1.0, 04-jun-10 page 11 of 12 www.power-one.com hwd dc-dc series data sheet hwd15dge efficiency vs full load power distribution 70 72 74 76 78 80 82 84 86 88 90 15/0.5 7.5/7.5 0.5/15 output load, io1/io2 (a) ef f ici en cy (% ) vinmin vinnom1 vinnom2 vinmax figure 8.efficiency vs. full-load power distribution figure 9. typical turn-on characteristics
mcd10166 rev. 1.0, 04-jun-10 page 12 of 12 www.power-one.com hwd dc-dc series data sheet figure 10. typical turn-off characteristics nuclear and medical applications - power-one products are not de signed, 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.

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