Document 417-1 SMT Planar Transformers For Applications up to 140 Watts The PL140 surface mount planar transformers are rated for 140 Watts and are designed to operate at frequencies as high as 500 kHz. They are available in 15 turns ratios and six different schematics. These transformers are ideal for use in high-current power supply applications such as open loop intermediate bus converters (IBC) and closed loop voltage mode converters. They are designed for use with nominal -48 V input. Output voltages depend on the the turns ratio, duty cycle and circuit topology. They offer high efficiency and feature excellent DCR, very low leakage inductance and 1500 Vdc primary to secondary isolation. Coilcraft can design custom planar transformers with different turns ratios and with an auxiliary winding to meet your specific requirements. Part number PL140-100 PL140-101 PL140-102 PL140-103 PL140-104 PL140-105 PL140-106 PL140-107 PL140-108 PL140-109 PL140-110 PL140-111 PL140-112 PL140-113 PL140-114 Primary Primary Leakage turns inductance1 inductance2 N1 N2 Schem. min (H) max (H) 4 4 A 120.0 0.35 9 B 152.0 0.35 5 5 A 188.0 0.35 11 B 227.0 0.35 6 6 A 270.0 0.45 4 4 C 120.0 0.35 9 D 152.0 0.35 5 5 C 188.0 0.35 11 D 227.0 0.50 6 6 C 270.0 0.60 4 4 E 120.0 0.35 9 F 152.0 0.35 5 5 E 188.0 0.35 11 F 227.0 0.35 6 6 E 270.0 0.45 DCR max (mOhms) Primary Secondary 12.0 (2-3), 12.0 (3-4) 4.0 (6-10) 32.8 (2-4) 4.0 (6-10) 20.8 (2-3), 20.8 (3-4) 4.0 (6-10) 48.8 (2-4) 4.0 (6-10) 28.0 (2-3), 28.0 (3-4) 4.0 (6-10) 12.0 (2-3), 12.0 (3-4) 0.5 (6-7), 0.5 (9-10) 32.8 (2-4) 0.5 (6-7), 0.5 (9-10) 20.8 (2-3), 20.8 (3-4) 0.5 (6-7), 0.5 (9-10) 48.8 (2-4) 0.5 (6-7), 0.5 (9-10) 28.0 (2-3), 28.0 (3-4) 0.5 (6-7), 0.5 (9-10) 12.0 (2-3), 12.0 (3-4) 1.0 (6-8), 1.0 (9-10) 32.8 (2-4) 1.0 (6-8), 1.0 (9-10) 20.8 (2-3), 20.8 (3-4) 1.0 (6-8), 1.0 (9-10) 48.8 (2-4) 1.0 (6-8), 1.0 (9-10) 28.0 (2-3), 28.0 (3-4) 1.0 (6-8), 1.0 (9-10) Schematics 6 2 N1 1T 7 3 A N2 1T 4 8 1T 1 Aux (opt) 9 1T 10 5 6 2 1T N1 B 7 1T 8 4 1T 1 Aux (opt) 9 1T 10 5 2 N1 C 3 6 1T 7 N2 4 1 9 Aux (opt) 1T N1 1T 10 5 2 1. Inductance measured on an Agilent/HP 4284 between pins 2 and 4 at 200 kHz, 0.1 Vrms, 0 Adc. 2. Leakage inductance measured between pins 2 and 4 at 100 kHz, 0.1 Vrms, 0 Adc with all secondary pins shorted. 3. Storage and ambient operating temperature range: -40C to +85C. 4. Electrical specifications at 25C. D 6 7 4 1 9 Aux (opt) 1T N1 1T 10 5 6 2 E 7 3 N2 1T 4 1 Aux (opt) 8 9 1T 10 5 2 6 1T F N1 1T 4 1 5 Specifications subject to change without notice. Please check our website for latest information. (c) Coilcraft, Inc. 2005 Document 417-1 7 Aux (opt) 8 9 1T 10 Revised 02/05/05 Document 417-2 PL140 Series SMT Planar Transformers Dimensions Dot indicates pin 1 0.095 2,41 10 9 2 0.810 max 3 20,57 8 4 7 0.080 O 2,03 6 0.800 20,32 10 1 2 3 4 5 9 8 7 6 Recommended Land Pattern 0.920 max 23,37 0.125 3,18 O 0.110 2,79 Note: Pad for pin 3 not necessary for schematics B, D and F. Pad for pin 8 is not necessary for schematics C and D. Pads 1 and 5 are only needed for optional auxiliary winding. 0.360 max 9,14 0.006 /0,15 Tape and reel: 200/13 reel 44 mm tape width For packaging data see Tape and Reel Specifications section. Specifications subject to change without notice. Please check our website for latest information. (c) Coilcraft, Inc. 2005 Document 417-2 Revised 12/22//04