Document 982F-1 Coupled Chip Inductors PFD3215 For Flyback, SEPIC, Zeta and other applications The PFD3215 has a footprint less than 3.2 × 2.3 mm, making this shielded coupled inductor ideal for applications with limited board space. It is designed for use in a variety of circuits including flyback, multi-output buck, SEPIC and Zeta. These inductors provide high efficiency and excellent current handling in a rugged, low cost part. They can also be used as two single inductors connected in series or parallel, as a wideband transformers or as a common mode choke. + + D L1 C L2 VOUT C VIN – SW – 0.131 max 3,32 1 0.078 1,98 4 L1 0.059 max 1,5 Typical Flyback Converter D L2 + VOUT C AUX – L2 + + 3 2 VIN 0.006 0,15 L1 D SW VOUT C – – Typical Buck Converter with auxiliary output 0.014 ±0.003 0,356 ±0,0762 1 4 2 0.030 0,762 4 3 3 1 2 inches mm Recommended Land Pattern D + L1 0.092 max 2,33 0.025 0,635 Dimensions are in 0.088 2,24 0.024 0,610 VIN 0.028 0,711 C L2 Q – + C1 C – Typical SEPIC schematic + + – L2 C1 Q VIN VOUT L1 C D Typical Zeta schematic [email protected] subject to change without notice. US +1-847-639-6400 Please check our website for latest information. UK +44-1236-730595 [email protected] Taiwan +886-2-2264 3646 [email protected] China +86-21-6218 8074 [email protected] Singapore + 65-6484 8412 [email protected] C VOUT – Document 982F-1 Revised 12/05/12 © © Coilcraft Coilcraft Inc. Inc. 2013 2013 This This product product may may not not be be used used in in medical medical or or high high risk applications without prior Coilcraft approval. risk applications without prior Coilcraft approval. Specification Specification subject subject to to change change without without notice. notice. Please Please check check web web site site for for latest latest information. information. Document 982F-2 PFD3215 Coupled Inductors for SEPIC applications Part number1 Inductance2 ±20% (µH) PFD3215-391ME_ PFD3215-102ME_ PFD3215-182ME_ PFD3215-222ME_ PFD3215-332ME_ 0.39 1.0 1.8 2.2 3.3 PFD3215-472ME_ 4.7 PFD3215-682ME_ 6.8 PFD3215-103ME_ 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 0.070 0.123 0.250 0.265 0.360 600 400 230 270 190 0.89 0.95 0.97 0.97 0.98 0.08 0.09 0.11 0.13 0.14 2.10 2.302.40 1.35 1.551.65 1.00 1.201.30 0.95 1.051.15 0.75 0.830.90 0.98 0.85 0.60 0.57 0.55 1.39 1.20 0.85 0.81 0.78 0.450 175 0.630 155 1.25 110 0.98 0.98 0.98 0.17 0.25 0.31 0.65 0.750.80 0.55 0.650.70 0.45 0.500.55 0.51 0.40 0.27 0.72 0.57 0.38 1. When ordering, please specify packaging code: Coupled Inductor Core and Winding Loss Calculator PFD3215-103MEC 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 C 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/HP 4191A 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 current flowing in one winding. 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 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. PFD3215 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) PFD3215-391ME_0.39 PFD3215-102ME_1.0 PFD3215-182ME_1.8 PFD3215-222ME_2.2 PFD3215-332ME_3.3 0.27 0.70 1.26 1.54 2.31 1 : 1 1 : 1 1 : 1 1 : 1 1 : 1 2.40 1.65 1.30 1.15 0.90 PFD3215-472ME_4.7 PFD3215-682ME_6.8 PFD3215-103ME_ 10 3.29 0.442 0.17 1 : 1 4.76 0.600 0.25 1 : 1 7.001.250.31 1 : 1 0.80 0.70 0.55 0.070 0.123 0.250 0.265 0.335 1. When ordering, please specify packaging code: PFD3215-103MEC 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). 0.08 0.09 0.11 0.13 0.14 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. [email protected] subject to change without notice. US +1-847-639-6400 Please check our website for latest information. UK +44-1236-730595 [email protected] Taiwan +886-2-2264 3646 [email protected] China +86-21-6218 8074 [email protected] Singapore + 65-6484 8412 [email protected] Document 982F-2 Revised 12/05/12 © Coilcraft Inc. 2013 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information. Document 982F-3 PFD3215 Coupled Inductors for Flyback, SEPIC and other applications L vs Current L vs Frequency Typical Current Derating Core material Ferrite Core and winding loss Go to online calculator Environmental RoHS compliant, halogen free Weight 18 – 28 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, 0.20 mm thick, 4 mm pocket spacing, 1.21 mm pocket depth PCB washing Tested with pure water or alcohol only. For other solvents, see Doc787_PCB_Washing.pdf. 120 110 90 80 70 60 50 40 25°C Percent of rated Irms 100 30 20 10 0 -40 -20 0 20 40 60 80 100 120 140 Ambient temperature (°C) [email protected] subject to change without notice. US +1-847-639-6400 Please check our website for latest information. UK +44-1236-730595 [email protected] Taiwan +886-2-2264 3646 [email protected] China +86-21-6218 8074 [email protected] Singapore + 65-6484 8412 [email protected] Document 982F-3 Revised 12/05/12 © Coilcraft Inc. 2013 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information.