Document 539 Flyback Transformer The FA2443-AL was developed specifically for Texas Instruments UCC28600 Quasi-Resonant Flyback Green Mode Controller and is specified in SLUU256A for the evaluation module. This transformers is designed to operate in discontinous conduction mode at frequencies up to 140 kHz. Coilcraft can also custom engineer a transformer to meet your specific requirements. For free evaluation samples, contact Coilcraft or visit www.coilcraft.com. Part number FA2443-AL Inductance Inductance at 0 A1 at Ipk2 DCR max ±10% (µH) min (µH) (Ohms) 200 162 0.217 (4 – 6) 0.020 (8 – 13) 0.020 (9 – 14) 0.515 (1 – 7) Core material Ferrite Terminations RoHS tin-silver over tin over nickel over phos bronze. Other terminations available at additional cost. Weight 89.2 g Ambient temperature –40°C to +85°C Storage temperature Component: –40°C to +85°C. Packaging: –40°C to +80°C 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 50 parts per tray PCB washing Only pure water or alcohol recommended Leakage inductance3 max (µH) 5.9 1. Inductance is for the primary, measured at 10 kHz, 0.1 Vrms, 0 Adc. 2. Peak primary current drawn at minimum input voltage. 3. Leakage inductance is for the primary and is measured at 100 kHz, 0.1 Vrms with all other windings shorted. For TI UCC28600 Flyback Green Mode Controller Turns ratio pri : sec4 pri : bias 6:1 6:1 Ipk2 (A) 6.0 Isolation5 Vrms 1500 Output 120 W 4. Turns ratio for the secondary is with the windings connected in parallel 5. Isolation is from the primary to all other windings. 6. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. 1.500 max 38,10 8 9 4 Pri Sec 6 1.150 max 29,21 14 13 1 Bias 7 0.110 ±0.010 2,79 ±0,28 1.00 25,40 7 0.030 0,762 8 Secondary windings to be connected in parallel on the PC board 0.062 Ø 1,57 1.00 25,40 0.200 5,08 1.800 max 45,72 14 1 Dimensions are in inches mm 1 Recommended PCB Layout Specifications subject to change without notice. Please check our website for latest information. © Coilcraft, Inc. 2009 Document 539 Revised 10/28/08