Document 746-1 Magnetics for 300 W Power Supply with PFC • Specified by Texas Instruments in Reference Design SLUU341 for 300 Watt Isolated PFC Power Supply • HA3950-AL, Flyback transformer (T201) for 5 W bias supply operates with an input voltage range of 100 – 450 V. • HA3858-AL, Gate drive transformer (T301) Core material Ferrite Terminations RoHS compliant tin-silver over tin over copper. Other terminations available at additional cost. Weight HA3950-AL: 13.5 g; HA3858-AL: 4.1 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 Tested with pure water or alcohol only. For other solvents, see Doc787_PCB_Washing.pdf. HA3950-AL Flyback Transformer Part number InductanceInductance Leakage at 0 A1 at Ipk2 Ipk2 DCR max inductance Turns ratio ±10% (mH) (mH) (Ohms) max (µH)3Pri:Sec:P1 (A) HA3950-AL 2.3 1.61 0.860 (pri) 0.109 (sec) 0.080 (P1) 1 : 0.16 : 0.11 16.5 0.680 max 17,30 0.110 min 2,79 0.197 5,0 0.590 15,0 Pri 2 0.025 0,64 0.830 21,1 8 Sec 4 1 5 5 0.590 15,0 8 0.197 5,0 0.830 max 21,1 3 P1 15 V, 0.33 A Dot indicates pin 1 1. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using an Agilent/ HP 4263B impedance analyzer or equivalent. 2. Peak primary current drawn at minimum input voltage. 3. Leakage inductance is for the primary and is measured with the secondary shorted. 4. Output of the P1 winding is 10 V, 20 mA. 5. Isolation: 3000 Vrms, one minute primary to secondary; 500 Vrms, one minute windings to core 6. Electrical specifications at 25°C. 1 0.3 Output4 1 4 Dimensions are in 8 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] 4 0.048 1,2 5 Recommended PC Board Layout Document 746-1 Revised 07/23/09 © Coilcraft Inc. 2016 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. Document 746-2 Magnetics for 300 W PFC Power Supply HA3858-AL Gate Drive Transformer Primary Leakage Part Turns inductance1 inductance2 DCR max number ratio ±25% (µH) max (µH) (Ohms) Volt-time product (V-µsec) SRF typ3Capacitance (MHz) HA3858-AL1 : 1 : 1 460 1.87 (1 – 2) 0.380 (Pri [A]) 150 1.15 2.06 (3 – 4) 0.472 ((Pri [B]) 0.424 (sec) max (pF) 8.48 (pri) 28.66 (sec) 1. Inductance is for each winding, measured at 200 kHz, 0.4 Vrms, 0 Adc. 2. Leakage inductance is for each primary, measured at 200 kHz, 0.4 Vrms with secondary pins shorted. 3. SRF measured with coils connected in series using an Agilent/HP 4192 or equivalent. 4. Operating temperature range −40°C to +85°C. 5. Isolation: 3000 Vrms, one minute primary to secondary; 500 Vrms, one minute windings to core 6. Electrical specifications at 25°C. Dot indicates pin 1 1 Pri [ A] 0.350 max 8,89 2 8 Sec 7 3 0.541 13,75 0.125 min 3,18 0.148 3,75 Pri [ B] 4 0.675 max 17,15 0.148 3,75 1 5 4 0.024 ∅ 0,6 0.541 13,75 8 0.650 max 16,51 8 1 Dimensions are in inches mm 0.030 ∅ 0,762 4 5 Recommended PC Board Layout 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 746-2 Revised 07/23/09 © Coilcraft Inc. 2016 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.