6235 COUPLED Inductors Coupled Inductors for Critical Applications Tight coupling (k ≥ 0.97) makes the ST512PJD series of coupled inductors ideal for use in a variety of circuits including flyback, multi-output buck and SEPIC. These coupled miniature shielded inductors are 3.5 mm high and 6.0 mm square. They provide high inductance, high efficiency and excellent current handling in low cost part. They can be used as two single inductors connected in series or parallel, as a common mode choke or as a 1 : 1 transformer. + + D L1 VIN C L2 C VOUT – SW – Typical Flyback Converter L2 Dot indicates pin 1 1 + 4 AUX D L1 0.138 max 3,5 Recommended Suggested Land Pattern 1 4 0.047 1,20 0.167 0.079 4,25 2,00 – 45° typ 0.260 6,60 3 2 0.079 2,00 0.167 4,25 0.260 6,60 0.079 2,00 4 Dimensions are in L2 VOUT inches mm 3 + C1 L2 Q C Typical SEPIC schematic VOUT – Core material Ferrite Weight 420 – 480 mg Terminations RoHS compliant, halogen free silver-palladium-platinum-glass frit. Other terminations available at additional cost. Ambient temperature –40°C to +85°C with Irms current, +85°C to +125°C with derated current Storage temperature Component: –55°C to +125°C. Tape and reel packaging: –55°C to +80°C Winding to winding isolation 100 V 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) Packaging 750 per 7″ reel Plastic tape: 12 mm wide, 0.32 mm thick, 8 mm pocket spacing, 3.1 mm pocket depth Recommended pick and place nozzle OD: 5 mm; ID: ≤ 2.5 mm Document ST833-1 Revised 11/07/12 ® © Coilcraft, Inc. 2012 C – + Internal code 2 D Typical Buck Converter with auxiliary output 3 1 SW L1 – VIN L1 VOUT + VIN 0.236 ±0.003 6,0 ±0,08 XXX X Dash number + C – 0.236 ±0.003 6,0 ±0,08 2 D 1102 Silver Lake Road Cary, IL 60013 Phone 800-981-0363 Fax 847-639-1508 Email [email protected] www.coilcraft-cps.com This product may not be used in medical or high risk applications without prior Coilcraft approval. Specifications subject to change without notice. Please check our web site for latest information. 6235 COUPLED Inductors ST512PJD Series Coupled Inductors Part number1 Inductance ±20% (µH) 2 ST512PJD682MLZ 6.8 ST512PJD103MLZ 10 ST512PJD223MLZ 22 ST512PJD473MLZ 47 ST512PJD474MLZ470 ST512PJD105MLZ1000 ST512PJD155MLZ1500 ST512PJD205MLZ2000 Isat (A)6 Irms (A) 10%20% 30% both one drop drop drop windings7 winding8 0.10831 0.99 0.10 2.803.00 3.12 1.60 2.26 0.140 26 0.99 0.12 2.502.70 2.80 1.40 1.98 0.300 15 >0.99 0.15 1.50 1.67 1.73 0.851.20 0.620 9.7 >0.99 0.21 0.90 0.98 0.99 0.600.85 3.50 3.0 >0.99 0.61 0.180.22 0.230.25 0.35 7.00 1.9 >0.99 1.05 0.120.14 0.150.15 0.21 10.8 1.5 >0.99 1.70 0.100.12 0.130.14 0.20 16.0 1.3 >0.99 2.10 0.080.11 0.120.11 0.16 DCRSRFCoupling Leakage5 max3 typ4 coefficient L typ (Ohms) (MHz) typ (µH) 1. When ordering, please specify termination and testing code: Temperature rise calculation based on specified Irms ST512PJD105MLZ Termination:L=RoHS compliant silver-palladium-platinum-glass frit. Special order: T = RoHS tin-silver-copper (95.5/4/0.5) or S = non-RoHS tin-lead (63/37). Testing:Z =COTS H=Screening per Coilcraft CPSA-10001 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 L1 and is measured with L2 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 temperature rise calculation. 9. Electrical specifications at 25°C. Winding power loss = (IL12 + IL22 ) × DCR in Watts (W) 92.5°C Temperature rise = Winding power loss × W Examples for ST512PJD223MLZ: Equal current in each winding (0.80 A): Winding power loss = (0.80 2 + 0.80 2) × 0.30 = 0.384 W Temperature rise = 0.384 W × 92.5°C = 35.5°C W Unequal current (IL1 = 1.1 A, IL2 = 0.45 A): Winding power loss = (1.1 2 + 0.45 2) × 0.30 = 0.424 W 92.5°C = 39.2°C Temperature rise = 0.424 W × W Document ST833-2 Revised 11/07/12 ® © Coilcraft, Inc. 2012 1102 Silver Lake Road Cary, IL 60013 Phone 800-981-0363 Fax 847-639-1508 Email [email protected] www.coilcraft-cps.com This product may not be used in medical or high risk applications without prior Coilcraft approval. Specifications subject to change without notice. Please check our web site for latest information. 6235 COUPLED Inductors ST512PJD Series Coupled Inductors L vs Current L vs Frequency 10000 10000 2000 µH 1500 µH 1000 µH 470 µH 100 47 µH 22 µH 10 1 470 µH 100 22 µH 10 µH 6.8 µH 1 1 0.1 47 µH 10 10 µH 6.8 µH 0.01 1500 µH 1000 µH 1000 Inductance (µH) Inductance (µH) 1000 2000 µH 10 0.1 1 10 100 Frequency (MHz) Current (A) Typical Current Derating 100 90 80 70 60 50 40 30 20 10 0 25°C Percent of rated current 120 110 Isat Irms -40 -20 0 20 40 60 80 100 120 140 Ambient temperature (°C) Document ST833-3 Revised 11/07/12 ® © Coilcraft, Inc. 2012 1102 Silver Lake Road Cary, IL 60013 Phone 800-981-0363 Fax 847-639-1508 Email [email protected] www.coilcraft-cps.com This product may not be used in medical or high risk applications without prior Coilcraft approval. Specifications subject to change without notice. Please check our web site for latest information.