Document 1198 Forward Mode Transformer For Maxim MAX17599 PWM Controller • Forward mode transformer for the Maxim MAX17599 Active Clamp Current-Mode PWM Controller • 18 – 36 V input; 12 V, 3.3 A output • 1500 Vrms, one minute isolation from primary to secondary and gate windings • Specified on reference design MAXREFDES48# Core material Ferrite Terminations RoHS tin-silver (96.5/3.5) over tin over nickel over phos bronze. Weight 10.5 g Ambient temperature –40°C to +85°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. Part number1 RA6999-AL_ Inductance Leakage DCR max (mOhms)inductance Turns ratio at 0 A2 min (µH) pri sec gate max (µH) pri : sec pri : gate 70 20.529.5 36.4 0.35 1 : 1.1251 : 0.375 Output3 12 V, 3.3 A 1. When ordering, please specify a packaging code: RA6999-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. 3.Output is for the secondary winding. Output of the gate winding is 12 V, 0.25 A 4. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. 7 Gate 9 1 Pri 3 Dimensions are in 10 Sec 6 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 1198 Revised 08/19/14 © Coilcraft Inc. 2014 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.