DRQ Series Dual Winding, Shielded Inductors/Transformer Description • 125°C maximum total operating temperature • Dual winding inductors that can be used as either a single inductor, or in coupled inductor/transformer applications (1:1 turns ratio) • Four sizes of shielded drum core inductors • Windings can be connected in series or parallel, offering a broad range of inductance and current ratings Part Number DRQ73-R33-R DRQ73-1R0-R DRQ73-1R5-R DRQ73-2R2-R DRQ73-3R3-R DRQ73-4R7-R DRQ73-6R8-R DRQ73-8R2-R DRQ73-100-R DRQ73-150-R DRQ73-220-R DRQ73-330-R DRQ73-470-R DRQ73-680-R DRQ73-820-R DRQ73-101-R Rated Inductance (µH) 0.33 1.00 1.50 2.20 3.30 4.70 6.80 8.20 10.0 15.0 22.0 33.0 47.0 68.0 82.0 100 OCL(1) +/-20% (µH) 0.306 0.992 1.482 2.070 3.540 4.422 6.480 8.930 10.30 15.01 22.65 34.41 48.62 68.91 80.37 101.4 Irms(2) Amps 6.19 5.25 4.64 4.11 3.31 3.09 2.55 2.19 2.08 1.83 1.62 1.31 1.08 0.89 0.86 0.73 Parallel Ratings Isat(3) Amps Peak 14.4 7.97 6.52 5.52 4.22 3.78 3.12 2.66 2.47 2.05 1.67 1.35 1.14 0.96 0.89 0.79 DCR Ω (4) typ. Volt(5) µ-Sec 0.0074 0.0103 0.0132 0.0167 0.0259 0.0297 0.0435 0.0592 0.0656 0.0844 0.107 0.166 0.241 0.358 0.384 0.527 1.98 3.56 4.36 5.15 6.73 7.52 9.11 10.7 11.5 13.9 17.0 21.0 24.9 29.7 32.1 36.0 1) Open Circuit Inductance Test Parameters: 100kHz, 0.25 Vrms, 0.0 Adc Parallel: (1,2 -4,3) Series: (1-4) tie (2-3) 2) RMS current for an approximate ∆T of 40°C without core loss. It is recommended that the temperature of the part not exceed 125°C. 3) Peak current for approximately 30% roll-off at 20°C 4) DCR limits @ 20°C 5) Applied Volt-Time product (V-µS) across the inductor. This value represents the applied V-µS at 100KHz necessary to generate a core loss equal to 10% of the total losses for a 40°C temperature rise. 1207 BU-SB07326 • Peak current ratings from 0.13 amps to 56 amps • RMS current ratings from 0.128 amps to 17.9 amps • Inductance ratings from 0.33µH to 4.02mH • Surface Mount • 200Vac Isolation between windings • Ferrite core material Applications • As a transformer: SEPIC, flyback • As an inductor: buck, boost, coupled inductor • DC-DC converters • VRM inductor for CPU and DDR power supplies • Input and output filter chokes Environmental Data • Storage temperature: -40°C to +125°C • Operating temperature: -40°C to +125°C (range is application specific). • Solder reflow temperature: 260°C max. for 10 seconds max. Packaging • Supplied in tape and reel packaging, 1350 (DRQ73), 1100 (DRQ74), 600 (DRQ125), and 350 (DRQ127) per reel Page 1 of 7 OCL(1) +/-20% (µH) 1.224 3.968 5.928 8.280 14.16 17.69 25.92 35.72 41.20 60.04 90.60 137.6 194.5 275.6 321.5 405.6 Irms(2) Amps 3.10 2.63 2.32 2.06 1.66 1.55 1.28 1.10 1.04 0.916 0.811 0.653 0.542 0.444 0.430 0.367 Series Ratings Isat(3) DCR Ω (4) Amps typ. Peak 7.18 0.0296 3.99 0.0411 3.26 0.0527 2.76 0.0669 2.11 0.1035 1.89 0.1188 1.56 0.1742 1.33 0.2368 1.24 0.2623 1.03 0.339 0.83 0.429 0.68 0.665 0.57 0.965 0.48 1.43 0.44 1.54 0.39 2.11 6) Turns Ratio (1:3):(2-4) 1:1 7) Part number definition: DRQxxx-yyy-R DRQxxx = product code and size, -yyy = inductance value in µH, R = decimal point. If no R is present, third character = # of zeros -R suffix = RoHS compliant Data Sheet 4311 Volt(5) µ-Sec 3.96 7.12 8.72 10.3 13.5 15.0 18.2 21.4 23.0 27.8 34.0 42.0 49.8 59.4 64.2 72.0 Part Number DRQ73-151-R DRQ73-221-R DRQ73-331-R DRQ73-471-R DRQ73-681-R DRQ73-821-R DRQ73-102-R DRQ74-R33-R DRQ74-1R0-R DRQ74-1R5-R DRQ74-2R2-R DRQ74-3R3-R DRQ74-4R7-R DRQ74-6R8-R DRQ74-8R2-R DRQ74-100-R DRQ74-150-R DRQ74-220-R DRQ74-330-R DRQ74-470-R DRQ74-680-R DRQ74-820-R DRQ74-101-R DRQ74-151-R DRQ74-221-R DRQ74-331-R DRQ74-471-R DRQ74-681-R DRQ74-821-R DRQ74-102-R DRQ125-R47-R DRQ125-1R0-R DRQ125-1R5-R DRQ125-2R2-R DRQ125-3R3-R DRQ125-4R7-R DRQ125-6R8-R DRQ125-8R2-R DRQ125-100-R DRQ125-150-R DRQ125-220-R DRQ125-330-R DRQ125-470-R DRQ125-680-R Rated Inductance (µH) 150 220 330 470 680 820 1000 0.33 1.00 1.50 2.20 3.30 4.70 6.80 8.20 10.0 15.0 22.0 33.0 47.0 68.0 82.0 100 150 220 330 470 680 820 1000 0.47 1.00 1.50 2.20 3.30 4.70 6.80 8.20 10.0 15.0 22.0 33.0 47.0 68.0 OCL(1) +/-20% (µH) 150.9 223.3 325.5 465.8 676.5 821.7 995.0 0.294 0.952 1.422 1.986 3.396 5.182 7.344 8.566 9.882 16.09 21.73 33.01 49.64 69.67 80.95 101.6 150.0 227.0 335.6 465.3 671.2 812.7 1009 0.456 0.894 1.478 2.208 3.084 5.274 6.588 8.048 9.654 15.35 22.36 33.74 47.47 67.91 Irms(2) Amps 0.58 0.52 0.42 0.35 0.29 0.27 0.26 6.20 5.33 4.96 4.66 3.94 3.34 2.60 2.53 2.41 2.11 1.75 1.41 1.15 1.03 0.91 0.86 0.69 0.56 0.45 0.40 0.33 0.31 0.27 17.6 15.0 13.8 10.9 9.26 7.18 6.64 5.54 5.35 4.27 3.70 3.28 2.71 2.22 Parallel Ratings Isat(3) Amps Peak 0.65 0.53 0.44 0.37 0.31 0.28 0.25 18.4 10.2 8.35 7.06 5.40 4.37 3.67 3.40 3.17 2.48 2.13 1.73 1.41 1.19 1.11 0.99 0.81 0.66 0.54 0.46 0.38 0.35 0.31 33.0 23.6 18.3 15.0 12.7 9.71 8.68 7.86 7.17 5.69 4.71 3.84 3.24 2.70 DCR Ω (4) typ. Volt(5) µ-Sec 0.851 1.05 1.59 2.36 3.47 3.93 4.34 0.0074 0.0100 0.0115 0.0130 0.0183 0.0254 0.0418 0.0441 0.0489 0.0637 0.0925 0.143 0.216 0.265 0.345 0.383 0.591 0.907 1.41 1.74 2.58 2.93 3.89 0.0018 0.0024 0.0029 0.0045 0.0063 0.0105 0.0123 0.0176 0.0189 0.0298 0.0396 0.0505 0.0740 0.101 44.0 53.5 64.5 77.2 93.1 103 113 1.71 3.08 3.76 4.45 5.81 7.18 8.55 9.23 9.92 12.7 14.7 18.1 22.2 26.3 28.4 31.8 38.6 47.5 57.8 68.1 81.7 89.9 100 3.17 4.43 5.70 6.97 8.23 10.8 12.0 13.3 14.6 18.4 22.2 27.2 32.3 38.6 1) Open Circuit Inductance Test Parameters: 100kHz, 0.25 Vrms, 0.0 Adc Parallel: (1,2 -4,3) Series: (1-4) tie (2-3) 2) RMS current for an approximate ∆T of 40°C without core loss. It is recommended that the temperature of the part not exceed 125°C. 3) Peak current for approximately 30% roll-off at 20°C 4) DCR limits @ 20°C 5) Applied Volt-Time product (V-µS) across the inductor. This value represents the applied V-µS at 100KHz necessary to generate a core loss equal to 10% of the total losses for a 40°C temperature rise. 1207 BU-SB07326 Page 2 of 7 OCL(1) +/-20% (µH) 603.6 893.2 1302 1863 2706 3287 3980 1.176 3.808 5.688 7.944 13.58 20.73 29.38 34.26 39.53 64.36 86.92 132.0 198.6 278.7 323.8 406.4 600.0 908.0 1342 1861 2685 3251 4036 1.824 3.576 5.912 8.832 12.34 21.10 26.35 32.19 38.62 61.40 89.44 135.0 189.9 271.6 Irms(2) Amps 0.289 0.260 0.211 0.173 0.143 0.134 0.128 3.10 2.66 2.48 2.33 1.97 1.67 1.30 1.27 1.20 1.05 0.874 0.702 0.573 0.517 0.453 0.430 0.346 0.279 0.224 0.202 0.166 0.156 0.135 8.80 7.51 6.89 5.46 4.63 3.59 3.32 2.77 2.67 2.13 1.84 1.64 1.35 1.11 Series Ratings Isat(3) DCR Ω (4) Amps typ. Peak 0.32 3.41 0.27 4.20 0.22 6.36 0.18 9.44 0.15 13.88 0.14 15.72 0.13 17.36 9.18 0.0295 5.10 0.0400 4.17 0.0461 3.53 0.0521 2.70 0.0732 2.19 0.102 1.84 0.167 1.70 0.177 1.58 0.196 1.24 0.255 1.07 0.371 0.87 0.574 0.71 0.865 0.60 1.06 0.55 1.38 0.49 1.53 0.41 2.37 0.33 3.63 0.27 5.66 0.23 6.97 0.19 10.3 0.17 11.7 0.16 15.6 16.5 0.0078 11.8 0.0096 9.15 0.0114 7.50 0.0182 6.35 0.0253 4.86 0.0420 4.34 0.0492 3.93 0.0705 3.59 0.0757 2.85 0.120 2.36 0.159 1.92 0.203 1.62 0.297 1.35 0.440 6) Turns Ratio (1:3):(2-4) 1:1 7) Part number definition: DRQxxx-yyy-R DRQxxx = product code and size, -yyy = inductance value in µH, R = decimal point. If no R is present, third character = # of zeros -R suffix = RoHS compliant Data Sheet 4311 Volt(5) µ-Sec 88.0 107 129 154 186 206 226 3.42 6.16 7.52 8.9 11.6 14.4 17.1 18.5 19.8 25.4 29.4 36.2 44.4 52.6 56.8 63.6 77.2 95 116 136 163 180 200 6.34 8.86 11.40 13.9 16.5 21.6 24.0 26.6 29.2 36.8 44.4 54.4 64.6 77.2 Part Number DRQ125-820-R DRQ125-101-R DRQ125-151-R DRQ125-221-R DRQ125-331-R DRQ125-471-R DRQ125-681-R DRQ125-821-R DRQ125-102-R DRQ127-R47-R DRQ127-1R0-R DRQ127-1R5-R DRQ127-2R2-R DRQ127-3R3-R DRQ127-4R7-R DRQ127-6R8-R DRQ127-8R2-R DRQ127-100-R DRQ127-150-R DRQ127-220-R DRQ127-330-R DRQ127-470-R DRQ127-680-R DRQ127-820-R DRQ127-101-R DRQ127-151-R DRQ127-221-R DRQ127-331-R DRQ127-471-R DRQ127-681-R DRQ127-821-R DRQ127-102-R Rated Inductance (µH) 82.0 100 150 220 330 470 680 820 1000 0.47 1.00 1.50 2.20 3.30 4.70 6.80 8.20 10.0 15.0 22.0 33.0 47.0 68.0 82.0 100 150 220 330 470 680 820 1000 OCL(1) +/-20% (µH) 86.89 102.7 151.1 216.8 332.6 473.1 679.8 828.0 1008 0.419 0.821 1.357 2.027 2.831 4.841 7.387 8.861 10.47 14.09 22.93 33.92 47.05 66.48 79.75 99.31 144.9 221.5 323.6 467.1 676.7 818.1 1005 Irms(2) Amps 2.05 1.78 1.48 1.19 1.06 0.87 0.70 0.60 0.57 17.9 15.5 13.5 12.5 10.4 8.25 7.34 6.32 6.04 5.03 4.00 3.23 2.95 2.44 2.09 1.96 1.59 1.29 1.04 0.85 0.76 0.65 0.61 Parallel Ratings Isat(3) Amps Peak 2.39 2.20 1.81 1.51 1.22 1.02 0.85 0.77 0.70 56.0 40.0 31.1 25.5 21.5 16.5 13.3 12.2 11.2 9.66 7.57 6.22 5.28 4.44 4.06 3.64 3.01 2.43 2.01 1.68 1.39 1.27 1.14 DCR Ω (4) typ. Volt(5) µ-Sec 0.128 0.170 0.248 0.384 0.482 0.718 1.10 1.49 1.69 0.00195 0.00261 0.00341 0.00373 0.00567 0.00917 0.0116 0.0157 0.0172 0.0247 0.0391 0.0600 0.0719 0.105 0.143 0.163 0.247 0.376 0.574 0.861 1.08 1.47 1.66 43.7 47.5 57.6 69.0 85.5 102 122 135 149 3.50 4.90 6.30 7.70 9.10 11.9 14.7 16.1 17.5 20.3 25.9 31.5 37.1 44.1 48.3 53.9 65.1 80.5 97.3 117 141 155 172 1) Open Circuit Inductance Test Parameters: 100kHz, 0.25 Vrms, 0.0 Adc Parallel: (1,2 -4,3) Series: (1-4) tie (2-3) 2) RMS current for an approximate ∆T of 40°C without core loss. It is recommended that the temperature of the part not exceed 125°C. 3) Peak current for approximately 30% roll-off at 20°C 4) DCR limits @ 20°C 5) Applied Volt-Time product (V-µS) across the inductor. This value represents the applied V-µS at 100KHz necessary to generate a core loss equal to 10% of the total losses for a 40°C temperature rise. 1207 BU-SB07326 Page 3 of 7 OCL(1) +/-20% (µH) 347.6 410.8 604.4 867.2 1330 1892 2719 3312 4032 1.676 3.284 5.428 8.108 11.32 19.36 29.55 35.44 41.88 56.36 91.72 135.7 188.2 265.9 319.0 397.2 579.6 886.0 1294 1868 2707 3272 4020 Irms(2) Amps 1.03 0.892 0.739 0.594 0.530 0.434 0.350 0.301 0.283 8.94 7.74 6.77 6.23 5.23 4.13 3.67 3.16 3.02 2.51 2.00 1.61 1.47 1.22 1.04 0.980 0.796 0.645 0.522 0.427 0.380 0.325 0.307 Series Ratings Isat(3) DCR Ω (4) Amps typ. Peak 1.20 0.515 1.10 0.682 0.905 0.991 0.755 1.54 0.610 1.93 0.510 2.87 0.425 4.42 0.385 5.96 0.350 6.76 28 0.0078 20 0.0104 15.6 0.0137 12.7 0.0161 10.8 0.0229 8.24 0.0367 6.67 0.0465 6.09 0.0627 5.60 0.0686 4.83 0.0990 3.78 0.157 3.11 0.241 2.64 0.288 2.22 0.421 2.03 0.573 1.82 0.653 1.51 0.989 1.22 1.50 1.01 2.30 0.838 3.44 0.697 4.32 0.633 5.88 0.571 6.64 6) Turns Ratio (1:3):(2-4) 1:1 7) Part number definition: DRQxxx-yyy-R DRQxxx = product code and size, -yyy = inductance value in µH, R = decimal point. If no R is present, third character = # of zeros -R suffix = RoHS compliant Data Sheet 4311 Volt(5) µ-Sec 87.4 95.0 115.2 138 171 204 244 270 298 7.00 9.80 12.60 15.4 18.2 23.8 29.4 32.2 35.0 40.6 51.8 63.0 74.2 88.2 96.6 107.8 130.2 161 195 234 282 310 344 Dimensions - mm DRQ73 Series Recommended Pad Layout Side View Top View 3.55 Max 1.73 1.00 1.00 0.40 0.40 • DRQ73 ### 7.6 Max. 1.73 7.9 7.9 Dual Inductor Mode Bottom View Series Mode Schematic 6.1 0.73 Dual Inductor 0.60 Series Mode 1 7.6 Max. 1 2 L1 0.80 2 L2 3 Parallel Mode L1 L2 3 4 1 2 L1 L2 3 4 4 DRQ74 Series Recommended Pad Layout Side View Top View 1.73 4.45 Max • DRQ74 ### 1.00 1.00 0.40 0.40 1.73 7.6 Max 7.9 7.9 Dual Inductor Mode Series Mode Bottom View Schematic 0.73 Dual Inductor 7.6 Max 0.60 1 2 L1 1 L2 L1 4 3 Parallel Mode Series Mode 3 2 1 4 3 2 L1 L2 L2 4 6.1 Dimensions in millimeters. 1207 BU-SB07326 ### = Inductance value per family chart Dot indicates pin #1 Page 4 of 7 Data Sheet 4311 Dimensions - mm DRQ125 Series Side View Top View Recommended Pad Layout 6.00 Max 3.85 1 • 1 2 DRQ125 ### wwlly y R 2.50 4 4 2 3 12.5 Max 3 0.50 3.85 2.50 1 4 2 3 0.50 13.80 13.80 Dual Inductor Mode Series Mode Bottom View 2.05 Schematic 2.00 2 3 1 4 Dual Inductor 12.5 Max 1 2 L1 1 L2 3 10.0 Parallel Mode Series Mode L1 4 2 1 4 3 L1 L2 3 2 L2 4 DRQ127 Series Side View Top View Recommended Pad Layout 8.0 Max • 1 2 DRQ127 ### wwll yy R 2.50 4 2.50 12.5 Max 3 0.50 3.85 3.85 1 4 2 3 0.50 13.80 13.80 Dual Inductor Mode Series Mode Bottom View 2.05 Schematic 2.00 2 3 1 4 Dual Inductor 12.5 Max 1 L1 3 10.0 Series Mode 2 1 4 3 L2 L1 BU-SB07326 2 1 4 3 L2 Dimensions in millimeters. 1207 Parallel Mode 2 L1 L2 4 ### = Inductance value per family chart wwllyy = (date code) R = revision level Dot indicates pin #1 Page 5 of 7 Data Sheet 4311 Packaging Information DRQ73 Series Supplied in tape and reel packaging, 1350 parts per reel, 13" diameter reel. ACTUAL SIZE DRQ73 Ao=7.90mm Bo=7.90mm Ko=3.80mm Direction of Feed ➞ DRQ74 Series Supplied in tape and reel packaging, 1100 parts per reel, 13" diameter reel. Ø1.50 +0.1/-0.0 2.00 ±0.1 0.1 Ø1.50 Min. A 4.00 1.75±0.10 1 2 7.50±0.1 DRQ74 ### Bo ACTUAL SIZE DRQ74 4 3 A Ko Ao=7.90mm Bo=7.90mm Ko=4.70mm 16.00 ±0.3 0.3 Direction of Feed 12.00 Ao ➞ SECTION A-A DRQ125 Series Supplied in tape and reel packaging, 600 parts per reel, 13" diameter reel. 4.0 1.5 dia +0.1/-0.0 2.0 1.5 dia min A 1.7 1 2 11.5 • ACTUAL SIZE DRQ125 4 3 Ao=13.00mm Bo=13.00mm Ko=6.30mm 24.0 +/-0.3 DRQ125 ### wwllyy B0 K0 A0 Direction of Feed A 16.00 ➞ SECTION A-A DRQ127 Series 4.0 Supplied in tape and reel packaging, 350 parts per reel, 13" diameter reel. 1.5 dia +0.1/-0.0 2.0 1.5 dia min A 1.7 R0.3 max. 1 2 11.5 Direction of Feed K0 A0 20.00 SECTION A-A A R0.5 TYP. Dimensions are in millimeters. 1207 BU-SB07326 ACTUAL SIZE DRQ127 4 3 Ao=13.00mm Bo=13.00mm Ko=8.30mm 24.0 +/-0.3 DRQ127 ### wwllyy B0 Page 6 of 7 Data Sheet 4311 ➞ Inductance Characteristics OCL vs Isat DRQ73 OCL vs Isat DRQ74 100 100 90 80 80 OCL (%) OCL (%) 70 60 50 40 60 40 30 20 20 10 0 0 20 40 60 80 100 120 140 0 160 20 0 40 60 80 120 140 160 180 OCL vs Isat DRQ127 OCL vs Isat DRQ125 100 100 90 90 80 80 70 70 OCL (%) OCL (%) 100 % of Isat % of Isat 60 50 60 50 40 40 30 30 20 20 10 10 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 0 150 0 10 20 30 40 50 60 % of Isat 70 80 90 100 110 120 130 140 150 % of Isat 50 z KH 25 KH z Hz 0K 10 Hz 0K 30 0K 20 % of Losses from Irms (maximum) Hz Irms DERATING WITH CORE LOSS Core Loss % of Applied Volt-µSecond North America Cooper Bussmann 1225 Broken Sound Parkway NW Suite F Boca Raton, FL 33487-3533 Tel: 1-561-998-4100 Fax: 1-561-241-6640 Toll Free: 1-888-414-2645 Cooper Bussmann P.O. Box 14460 St. Louis, MO 63178-4460 Tel: 1-636-394-2877 Fax: 1-636-527-1607 Europe Cooper Bussmann Cooper (UK) Limited Burton-on-the-Wolds Leicestershire • LE12 5TH UK Tel: +44 (0) 1509 882 737 Fax: +44 (0) 1509 882 786 Cooper Bussmann Avda. Santa Eulalia, 290 08223 Terrassa, (Barcelona), Spain Tel: +34 937 362 812 +34 937 362 813 Fax: +34 937 362 719 Asia Pacific Cooper Bussmann 1 Jalan Kilang Timor #06-01 Pacific Tech Centre Singapore 159303 Tel: +65 278 6151 Fax: +65 270 4160 This bulletin is intended to present product design solutions and technical information that will help the end user with design applications. Cooper Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications. Life Support Policy: Cooper Bussmann does not authorize the use of any of its products for use in life support devices or systems without the express written approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. © 2007 Cooper Bussmann S t . L o u i s, M O 6 3 1 7 8 w w w. c o o p e r bu s s m a n n . c o m 1207 BU-SB07326 Page 7 of 7 Data Sheet 4311