B0860_15 Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Planar Transformer

Document 426
Planar Transformer ForMaximMAX5069A
PWM Controller
The B0860-C is approved by Maxim for use with their
MAX5069A high-frequency, current-mode, pulse-width
modulation (PWM) controller.
This planar transformer can be used in push-pull, half-
bridge and full-bridge topologies. It is ideal for use in
high-current, isolated or nonisolated power supply ap-
plications. It offers high efficiency in a low-profile pack-
age and features split primary and secondary windings,
a separate auxiliary winding and 1500 Vdc primary to
secondary isolation.
Coilcraft’s Planar Prototyping Kit C356 was used to de-
sign this transformer. No tooling or additional parts were
required. To order the kit, contact Coilcraft or purchase
on-line at http://order.coilcraft.com.
Free evaluation samples of B0860-C are available by
contacting Coilcraft or by visiting www.coilcraft.com.
Input Output Output Primary
Leakage
Part
Output voltage voltage ^  current  inductance^{2  } inductance³ DCR max
  _number1 _{power (W) range (V) nom (V) (A peak) min (µH)}
max (µH)
(mOhms)
B0860-CL_ 180
36 – 72
12
15
187.0
0.25
Pri: 38.0
Sec: 4.0
Aux: 120.0
  Turns ratio⁴
pri : sec  pri : aux
10 : 4
10 : 3
1. When ordering, specify a packaging code:
Packaging:
B0860-CLD
D = 13″ machine ready reel. EIA-481 embossed plastic
tape (200per 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 2 and 4 at 250
kHz, 0.1 Vrms, 0 Adc.
3. Leakage inductance measured between pins 2 and 4 at 250 kHz, 0.1 Vrms,
0 Adc with pins 6, 8 and 10 shorted.
4. Turns ratio is with the primary windings and secondary windings connected
in series.
5. Storage and ambient operating temperature range: –40°C to +85°C.
6. Electrical specifications at 25°C.
1
0.810 _max
20,57
2
3
4
5
0.360
9,14
max
Dot indicates pin 1
10
8
6
0.920
23,37
max
0.095
2,41
1
0.800
20,32
10
0.250
6,35
Ø
0.080
2,03
5
6
Recommended
Land Pattern
Ø
0.110
2,79
2
Pri 3
4
1
Aux
5
0.006 /0,15
Weight:
11.8 g
Terminations: Matte tin over nickel over brass
Tape and reel: 200/13″ reel  44 mm tape width
6
8 Sec
10
Document 426  Revised 05/10/07