Document 357-1 Planar Magnetics For Texas Instruments UCC3580 This planar transformer and planar inductor pair is designed specifically for the Texas Instruments UCC3580 family of PWM controllers. The B0392-A transformer is engineered for use in single switch, forward topologies operating at 300 kHz. It is ideal for use in high-current telecom power supply applications that require high efficiency in a low-profile package. The main winding of the B0430-A 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 B0392-AL_ Output power (W) 100 Output voltage (V) 3.3 Output current (A rms) 30.0 Primary inductance2 min (µH) 65.0 1. When ordering, please specify packaging code: Leakage inductance3 max (µH) 0.22 2. Inductance measured on an Agilent/HP 4284 between pins 1 and 2 at 250 kHz, 0.1 Vrms, 0 Adc. 3. Leakage inductance measured between pins 1 and 2 at 100 kHz, 0.1 Vrms, 0 Adc with secondary pins shorted. 4. Storage and ambient operating temperature range: –40°C to +85°C. 5. Electrical specifications at 25°C. B0392-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. 0.920 max 23,37 0.290 7,37 4 0.200 5,08 3 4 2 0.080 Ø 2,03 Pri 0.125 3,18 1 1 2 3 1 0.800 20,32 0.810 max 20,57 Pri/sec isolation (Vdc) 1500 DCR max (mOhms) Primary: 13.5 Secondary: 0.4 Sec 2 6:1 3 Recommended Land Pattern 4 Ø 0.110 2,79 0.340 max 8,64 0.006 /0,15 Terminations: Tape and reel: 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. © Coilcraft, Inc. 2007 Document 357-1 Revised 11/07/05 Document 357-2 Planar Magnetics for Texas Instruments UCC3580 Output Inductor Part number1 B0434-AL_ Inductance2 @ 0 Adc (µH) 2.0 ±10% I rated Adc 30 1. When ordering, please specify packaging code: B0434-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. Typical L vs Frequency Isat4 (A) 38 Irms5 (A) 36 2. Inductance measured on an Agilent/HP 4284 between pins 3 and 4 at 10 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. Average current for a 40°C rise above 25°C ambient. 6. Storage and ambient operating temperature range: –40°C to +85°C. 7. Electrical specifications at 25°C. Typical L vs Current 100 Inductance (µH) 100 Inductance (µH) Isolation3 (Vdc) 1100 DCR max (mOhms) Main: 1.9 Aux: 1450.0 10 1 0.1 10 1 0.1 0.1 10 1 100 0.1 3 0.800 20,32 1 Main 4T 4 4 4 0.810 max 20,57 2 100 Current (A) 0.920 max 23,37 1 10 1 Frequency (MHz) 3 0.310 7,87 0.250 6,35 0.310 7,87 0.250 6,35 2 Ø 0.060 1,52 1 Aux 16T 2 3 Recommended Land Pattern Ø 0.090 2,29 0.340 max 8,64 0.006 /0,15 Terminations: Tape and reel: 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. © Coilcraft, Inc. 2007 Document 357-2 Revised 11/07/05