Document 724 Flyback Transformer For Texas Instruments UCC28600 Flyback Green Mode Controller • Triple-output flyback transformer • Designed to operate at 50 kHz with universal ac input • 3000 Vrms, one minute isolation from primary and bias to secondaries Core material Ferrite Terminations RoHS compliant tin-silver over tin over copper over steel. Other terminations available at additional cost. Weight 9.7 g Ambient temperature –40°C to +85°C Storage temperature Component: –40°C to +85°C. Tray 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 100 per tray PCB washing Only pure water or alcohol recommended Part L at 0 A1 L at Ipk2 number ±10% (mH) min (mH) HA4018-AL 2.2 1.7 DCR max Leakage L3Turns Ipk2 (Ohms) max (µH) ratios (A) Outputs 1.55 (pri) 28.5 6.4 : 1(pri : bias) 0.3 +15 V, 0.05 A (sec 1) 0.350 (bias) 8.2 : 1(pri : sec 1) +5 V, 0.35 A (sec 2) 0.061 (sec 1) 15 : 1(pri : sec 2) –15V, 0.125 A (sec 3) 0.305 (sec 2) 5.3 : 1(pri : sec 3) +12 V, 20 mA (bias) 0.450 (sec 3) 1. Inductance is for the primary, measured at 50 kHz, 0.1 Vrms, 0 Adc. 2.Ipk is peak primary current drawn at minimum input voltage. 3. Leakage inductance is for the primary winding, measured at 50 kHz, 0.1 Vrms, 0 A with all secondary pins shorted. 4. Electrical specifications at 25°C. 1 5 Pri 6 2 3 Bias 4 0.472 max 12,0 +15 V @ 0.05 A Sec1 +5 V @ 0.35 A 8 0.134 3,4 GND Sec3 –15 V @ 0.125 A 0.024 0,6 0.689 17,5 0.130 min 3,3 Sec2 7 0.823 max 20,9 Dot indicates pin 1 4 0.689 17,5 5 0.197 5,0 0.197 5,0 1 8 0.823 max 20,9 Dimensions are in 0.041 1,03 1 8 4 5 Recommended PC Board Layout 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 724 Revised 09/29/09 © 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.