B0357-BL

Document 372-1 Planar Magnetics For National Semiconductor LM5025 and LM5034 This planar transformer and planar inductor pair is designed specifically for the National Semiconductor LM5110 Gate Driver and LM5025 Active Clamp Voltage Mode PWM Controller. These parts are also specified by NSC for use with their LM5034 Dual Interleaved Controller. The B0357-B transformer is engineered for use in high current telecom power supply applications that require high efficiency in a low-profile package. The main winding of the B0358-CC inductor serves as an output choke, while the auxiliary winding controls input current to the PWM. Request free evaluation samples by contacting Coilcraft or visiting www.coilcraft.com. Transformer Part number1 B0357-BL_ Output power (W) 100 Output voltage (V) 3.3 Output current (A rms) 30.0 Primary inductance2 min (µH) 320.0 Leakage inductance3 max (µH) 0.55 DCR max (mOhms) Primary: 55.0 Secondary: 1.0 Pri/sec isolation (Vdc) 1500 1. When ordering, please specify packaging code: B0357-BLD 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 measured on an Agilent/HP 4284 between pins 1 and 2 at 250 kHz, 0.1 Vrms, 0 Adc. 0.920 max 23,37 3. Leakage inductance measured between pins 1 and 2 at 100 kHz, 0.1 Vrms, 0 Adc with secondary pins shorted. 4. Ambient temperature range: –40°C to +85°C 5. Storage temperature range: Component: –40°C to +85°C Packaging: –40°C to +80°C 6. Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between. 7. Electrical specifications at 25°C. 1 3 0.800 20,32 1 4 1 0.125 3,18 4 Pri Sec 0.810 max 20,57 3 2 0.400 10,16 0.200 5,08 2 0.250 6,35 3 2 4 12 : 2 0.110 Ø 2,79 Ø 0.080 2,03 Recommended Land Pattern 0.360 max 9,14 0.006 /0,15 Weight: Terminations: Tape and reel: 11.3 g Matte tin over nickel over brass 200/13″ reel 44 mm tape width Specifications subject to change without notice. Please check our website for latest information. Document 372-1 Revised 10/31/08 © Coilcraft, Inc. 2008 Document 372-2 Planar Magnetics for NSC LM5025 and LM5034 Output Inductor Part number1 B0358-CL_ Inductance2 at 0 Adc (µH) 2.0 ±10% DCR max (mOhms) Main: 2.0 Aux: 900.0 Isolation3 (Vdc) 1500 Isat4 (A) 32 Irms5 (A) 36 1. When ordering, please specify packaging code: B0358-CLD 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 measured on an Agilent/HP 4284 between pins 3 and 4 at 250 kHz, 0.1 Vrms. 3. Isolation measured from pin 1 to pin 3. 4. DC current at which inductance drops 10% (typ) from its value without current. 5. Current that causes a 40°C temperature rise from 25°C ambient. 6. Ambient temperature range: –40°C to +85°C 7. Storage temperature range: Component: –40°C to +85°C Packaging: –40°C to +80°C 8. Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between. 9. Electrical specifications at 25°C. Typical L vs Frequency 100 Typical L vs Current 100 10 10 Inductance (µH) 1 Inductance (µH) 1 10 1 0.1 0.1 0.01 0.01 0.1 0.01 0.1 1 10 100 Frequency (MHz) 0.920 max 23,37 1 4 Current (A) 3 0.800 20,32 4 Main 4T 4 1 0.810 max 20,57 2 3 0.310 7,87 0.310 7,87 2 3 0.250 6,35 0.250 6,35 0.110 2,79 1 Aux 13T 2 Ø 0.080 2,03 Recommended Land Pattern Ø 0.360 max 9,14 0.006 /0,15 Weight: Terminations: Tape and reel: 11.7 g Matte tin over nickel over brass 200/13″ reel 44 mm tape width Specifications subject to change without notice. Please check our website for latest information. Document 372-2 Revised 10/31/08 © Coilcraft, Inc. 2008