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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 (H) 65.0 Leakage inductance3 max (H) 0.22 DCR max (mOhms) Primary: 13.5 Secondary: 0.4 Pri/sec isolation (Vdc) 1500
1. When ordering, please specify packaging code: 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
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: -40C to +85C. 5. Electrical specifications at 25C.
1 0.800 20,32
3
1
1
0.810 max 20,57
2
4 3
0.290 7,37
0.200 5,08
2
0.125 3,18
4 3
Pri
Sec
2
4
6:1
O 0.110 2,79
0.080 O 2,03
Recommended Land Pattern
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.
Document 357-1
Revised 11/07/05
(c) Coilcraft, Inc. 2007
Document 357-2
Planar Magnetics for Texas Instruments UCC3580
Output Inductor
Part number1 B0434-AL_ Inductance2 @ 0 Adc (H) 2.0 10% I rated Adc 30 DCR max (mOhms) Main: 1.9 Aux: 1450.0 Isolation3 (Vdc) 1100 Isat4 (A) 38 Irms5 (A) 36
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.
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 40C rise above 25C ambient. 6. Storage and ambient operating temperature range: -40C to +85C. 7. Electrical specifications at 25C.
Typical L vs Frequency
100
Typical L vs Current
100
Inductance (H)
Inductance (H)
0.1 1 10 100
10
10
1
1
0.1
0.1 0.1 1 10 100
Frequency (MHz)
Current (A)
0.920 max 23,37
1 4
3
0.800 20,32
4
Main 4T
4
0.250 6,35 0.250 6,35
1
0.810 max 20,57
2 3
0.310 7,87 0.310 7,87
2 3
1
Aux 16T
2
O
0.060 1,52
Recommended Land Pattern
O
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.
Document 357-2
Revised 11/07/05
(c) Coilcraft, Inc. 2007

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