Document 1005F-1 Coupled Chip Inductors PFD2015 For Flyback, SEPIC, Zeta and other applications With a footprint of 2.2 × 1.45 mm, the PFD2015 is Coilcraft’s smallest shielded coupled inductor. It is ideal for use in a variety of circuits including flyback, multi-output buck, SEPIC and Zeta. These inductors provide high efficiency and excellent current handling for parts this small. They can also be used as two single inductors connected in series or parallel, as common mode chokes or as wideband transformers. + + D L1 C L2 VOUT C VIN – SW – 0.090 max 2,29 1 0.054 1,36 1 4 + VIN 0.044 1,118 3 4 0.016 0,406 0.060 max 1,52 inches mm C – L1 VIN 1 D + C + C1 L2 Q C VOUT 2 – Dimensions are in D SW VOUT Typical Buck Converter with auxiliary output 2 0.017 0,432 L1 – 0.028 0,711 3 AUX + 3 0.010 0,25 0.014 ±0.003 0,356 ±0,076 + VOUT C – L2 2 D L2 4 L1 0.059 max 1,5 Typical Flyback Converter Recommended Land Pattern – Typical SEPIC schematic 0.022 0,559 + + Q VIN – L2 C1 L1 C D Typical Zeta schematic Specifications subject to change without notice. Please check our website for latest information. C VOUT – Document 1005F-1 Revised 09/08/15 Document 1005F-2 PFD2015 Coupled Inductors for SEPIC applications Part number1 Inductance2 ±20% (µH) PFD2015-102ME_ 1.0 PFD2015-122ME_ 1.2 PFD2015-182ME_ 1.8 PFD2015-272ME_ 2.7 PFD2015-332ME_ 3.3 PFD2015-472ME_ 4.7 PFD2015-682ME_ 6.8 PFD2015-822ME_ 8.2 PFD2015-103ME_ 10 Isat (A)6 Irms (A) DCR SRFCoupling Leakage typ4 5 coefficient inductance 10% 20%30% both one (Ohms) (MHz) typ typ (µH) drop drop drop windings7 winding8 max3 0.165 0.175 0.294 0.477 0.670 1.00 1.75 2.50 3.40 380 310 265 220 180 160 130 125 110 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.065 0.071 0.110 0.162 0.200 0.285 0.415 0.500 0.590 0.85 1.101.30 0.80 1.051.20 0.70 0.851.00 0.65 0.820.88 0.57 0.710.77 0.44 0.550.60 0.37 0.420.47 0.35 0.380.42 0.30 0.340.37 0.800 0.750 0.490 0.410 0.370 0.260 0.187 0.150 0.130 1.13 1.06 0.690 0.580 0.525 0.370 0.265 0.210 0.185 1. When ordering, please specify packaging code: Coupled Inductor Core and Winding Loss Calculator PFD2015-103MEC Packaging: C= 7″ machine-ready reel. EIA-481 embossed plastic tape (2000 parts per full reel). B=Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter D instead. D= 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (7500 parts per full reel). 2. Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent. When leads are connected in parallel, inductance is the same value. When leads are connected in series, inductance is four times the value. 3. DCR is for each winding. When leads are connected in parallel, DCR is half the value. When leads are connected in series, DCR is twice the value. 4. SRF measured using an Agilent/HP8753 or equivalent. When leads are connected in parallel, SRF is the same value. 5. Leakage inductance is for the primary winding with the secondary windings shorted. 6. DC current, at which the inductance drops the specified amount from its value without current. It is the sum of the current flowing in both windings. 7. Equal current when applied to each winding simultaneously that causes a 40°C temperature rise from 25°C ambient. See temperature rise calculation. 8. Maximum current when applied to one winding that causes a 40°C temperature rise from 25°C ambient. See estimated temperature rise calculation. 9. Electrical specifications at 25°C. Refer to Doc 639 “Selecting Coupled Inductors for SEPIC Applications.” Refer to Doc 362 “Soldering Surface Mount Components” before soldering. This web-based utility allows you to enter frequency, peak-to-peak (ripple) current, and Irms current to predict temperature rise and overall losses, including core loss. Go to online calculator. PFD2015 Coupled Inductors for Flyback applications Part number1 Inductance at 0 A2 ±20% (µH) InductanceDCRLeakage at Ipk A3max inductance4Turns Ipk3 ±20% (µH) (Ohms) typ (µH) ratio (A) PFD2015-102ME_1.0 PFD2015-122ME_1.2 PFD2015-182ME_1.8 PFD2015-272ME_2.7 PFD2015-332ME_3.3 PFD2015-472ME_4.7 PFD2015-682ME_6.8 PFD2015-822ME_8.2 PFD2015-103ME_10 0.70 0.84 1.26 1.89 2.37 3.29 1.76 5.74 7.00 0.165 0.175 0.294 0.477 0.670 1.00 1.75 2.50 3.40 1. When ordering, please specify packaging code: PFD2015-103MEC Packaging: C= 7″ machine-ready reel. EIA-481 embossed plastic tape (2000 parts per full reel). B=Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter D instead. D= 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (7500 parts per full reel). 0.065 0.071 0.110 0.162 0.200 0.285 0.415 0.500 0.590 1 : 1 1 : 1 1 : 1 1 : 1 1 : 1 1 : 1 1 : 1 1 : 1 1 : 1 1.30 1.20 1.00 0.88 0.77 0.60 0.47 0.42 0.37 2. Inductance is for the primary, measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent. 3. Peak primary current drawn at minimum input voltage. 4. Leakage inductance is for the primary winding with the secondary windings shorted. 5. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. Specifications subject to change without notice. Please check our website for latest information. Document 1005F-2 Revised 09/08/15 Document 1005F-3 PFD2015 Coupled Inductors for Flyback, SEPIC and other applications L vs Frequency L vs Current 100 10 µH 8.2 µH 6.8 µH 4.7 µH 3.3 µH 2.7 µH 10 1.8 µH 1.2 µH 1.0 µH 1 0.1 1 100 10 1000 Inductance (µH) Inductance (µH) 100 10 µH 8.2 µH 6.8 µH 4.7 µH 3.3 µH 2.7 µH 1.8 µH 1.2 µH 1.0 µH 10 1 0.1 0.01 Frequency (MHz) 120 110 90 80 70 60 50 40 25°C Percent of rated Irms 100 20 10 0 -40 -20 0 20 40 60 80 10 Current (A) Typical Current Derating 30 1 0.1 100 120 140 Core material Ferrite Core and winding loss Go to online calculator Environmental RoHS compliant, halogen free Weight 13 – 23 mg Terminations RoHS compliant silver-palladium-platinum-glass frit. Ambient temperature –40°C to +85°C with Irms current, +85°C to +125°C with derated current Storage temperature Component: –40°C to +125°C. Tape and reel packaging: –40°C to +80°C Winding to winding isolation 250 Vrms, one minute Resistance to soldering heat Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C / 85% relative humidity) Failures in Time (FIT) / Mean Time Between Failures (MTBF) 38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332 Packaging 2000/7″ reel; 7500/13″ reel Plastic tape: 8 mm wide, 0.23 mm thick, 4 mm pocket spacing, 1.63 mm pocket depth PCB washing Tested with pure water or alcohol only. For other solvents, see Doc787_PCB_Washing.pdf. Ambient temperature (°C) Specifications subject to change without notice. Please check our website for latest information. Document 1005F-3 Revised 09/08/15