Document 830 Planar Transformer For National Semiconductor LM5027 Active Clamp Controller • Developed for the National Semiconductor LM5027 Voltage Mode Active Clamp Controller. • Chosen by NSC for T1 on the LM5027 Evaluation Board, and is described in Application Note AN-1976. • 1500 Vdc isolation, primary and auxiliary to secondaries • Auxiliary winding provides 10 V to power the chipset. Core material Ferrite Terminations RoHS matte tin over nickel over brass. Weight 11.9 g Ambient temperature –40°C to +85°C Storage temperature Component: –40°C to +85°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 200/13″ reel Plastic tape: 44 mm wide, 0.37 mm thick, 32 mm pocket spacing, 9.35 mm pocket depth PCB washing Only pure water or alcohol recommended LeakageInput 3 Turns voltage Part Inductance2 DCR max (mOhms) inductance4 min (µH) pri sec aux max (µH) range (V) pri : sec1 : sec2 : aux Output5 number1 HA4000-AL_ 270 56 0.5 294 0.6 1. When ordering, please specify a packaging code: HA4000-ALD Packaging:D =13″ machine ready reel. EIA-481 embossed plastic tape (200 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 for the primary, measured across pins 2 and 4 at 200 kHz, 0.1 Vrms, 0 Adc. Dot indicates pin 1 ∅ 4 XXXX Y 2 0.810 max 3 20,57 5 HA4000-AL 1 0.920 max 23,37 10 9 0.190 4,82 1 2 4 5 7 6 0.095 2,41 Parts manufactured prior to November, 2011 may be marked differently. 12 : 1 : 1 : 7 3.3 V, 30 A 3. DCR for the primary is measured from pin 2 to pin 4. DCR for the secondary is for each winding. 4. Leakage inductance is for the full primary and is measured with the secondary shorted. 5. Output is with the secondary windings connected in series. Bias winding output is 10 V, 65 mA. 6. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. 0.800 20,32 0.080 2,03 36 – 78 0.125 3,18 2 6 10 Primary 9 7 0.250 6,36 0.110 ∅ 2,79 0.360 max 9,14 Sec1 7 4 6 Recommended Land Pattern 3 1 Aux 9 Sec2 10 5 Pins 7 and 9 to be connected on the PC board. Pin 3 is internally connected only and does not touch the PC board. 0.006 /0,15 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 830 Revised 05/29/12 © 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.