Document 1023 Flyback Transformer For TI TPS23751 / 2 PD Controllers • Flyback transformer for Texas Instruments TPS23751 and TPS23752 PD Controllers • Input: 33 – 57 V • 1500 Vrms, one minute isolation from primary and bias to secondary and drive Core material Ferrite Terminations RoHS tin-silver-copper over tin over nickel over phos bronze. Other terminations available at additional cost. Weight 11.3 g Ambient temperature –40°C to +125°C Storage temperature Component: –40°C to +125°C. Tape and reel packaging: –40°C to +80°C 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 175 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick, 28 mm pocket spacing, 11.9 mm pocket depth PCB washing Tested with pure water or alcohol only. For other solvents, see Doc787_PCB_Washing.pdf L at 0 A2 L at Ipk3 DCR max (Ohms)4 Part ±10% min number1 (µH) (µH) pri sec bias drive NA5730-AL_ 62 55.8 0.107 0.004 0.122 Turns ratio6 Leakage L5 max (µH) pri : sec pri : bias pri : drive 0.060 1 : 0.125 1 : 0.29 2.0 1. When ordering, please specify a packaging code: NA5730-ALD Packaging: D = 13″ machine ready reel. EIA-481 embossed plastic tape (175 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. 2. Inductance is measured at 250 kHz, 0.1 Vrms, 0 Adc. 3. Peak primary current drawn at minimum input voltage. 1 : 0.125 Ipk3 (A) Output7 2.1 5.0 V, 4.5 A 4. DCR for the primary and the secondary is measured with windings connected in parallel. 5. Leakage inductance is for the primary, measured with the windings connected in parallel and the secondary windings shorted. 6. Turns ratio is with the primary windings and secondary windings connected in parallel. 7. Output is with the secondary windings connected in parallel. Output of the drive winding is 5 V, 10 mA. Output of the bias winding is 12 V, 20 mA. 8. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. Dot indicates pin 1 1 NA5730-AL 0.118 3,00 12 XXXX Y 0.028 0,70 0.827 21,0 0.118 3,00 0.810 max 20,57 0.050 1,27 1 12 Recommended Land Pattern 3 4 12 11 Pri Sec 9 10 8 0.130 3,3 0.930 23,62 Bias Drive 7 Primary windings and secondary windings to be connected in parallel on PC board 0.450 max 11,43 0.969 24,6 1.181 max 30,00 0.004 / 0,10 Dimensions are in inches mm US +1-847-639-6400 [email protected] 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 1023 Revised 10/08/13 © 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.