Document 305
Planar Transformers
For National Semiconductor
LM5030 Controller IC
Less than 10 mm high, Coilcraft’s planar transformers are
ideal for use in high-current telecom power supply appli-
cations that require high efficiency in a low-profile package.
These transformers are designed specifically to perform
with the National Semiconductor LM5030 Push-Pull Cur-
rent Mode PWM Controller. They provide three different
output ratings to suit a variety of applications All offer
1500 Vrms primary to secondary isolation.
Coilcraft’s A9785-B, A0153-A and B0414-A are output
chokes and include an extra winding for auxiliary voltage
supply. Our MSS6132-103 functions as the input filter
choke in the same circuit. Refer to separate data sheets
for additional information on these parts.
Request free evaluation samples by contacting Coilcraft
or visiting
www.coilcraft.com.
Output
Part
power
number
1
(W)
A9784-BL_
33
A0152-AL_
35
B0310-AL_
60
Input
voltage
range (V)
36 – 75
36 – 75
36 – 75
Output
voltage (V)
3.3
5.0
12.0
Output
Primary
Leakage
current
2
inductance
3
inductance
(A rms) min (mH)
max (µH)
10.0
1.30
3.50
7.0
1.30
2.50
5.0
1.30
2.50
DCR max
pri
0.850
0.850
0.850
(Ohms)
sec
0.016
0.018
0.060
Turns
ratio
pri : sec
6
:
1
4
:
1
2
:
1
1. When ordering, please specify
packaging
code:
B0310-ALD
Packaging: D
= 13″ machine ready reel. EIA-481 embossed plastic
tape (250 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.
1.320 max
33,53
3
0.870 max
2
22,10
1
4
0.105
0,267
5
2. 15°C temperature rise typical at output current.
3. Inductance measured between pins 1 and 3 at 250 kHz, 0.1 Vrms,
0 Adc.
4. Operating temperature range: –40°C to +85°C.
5. Electrical specifications at 25°C.
1.115 ±0.010
28,32 ±0,25
Recommended
Land Pattern
0.334 ±0.010
8,48 ±0,25
0.334 ±0.010
8,48 ±0,25
6
0.340 max
8,64
0.004 / 0,10
Weight:
Terminations:
Tape and reel:
9.5 – 10.9 g
Matte tin over nickel over brass
250/13″ reel 56 mm tape
Specifications subject to change without notice.
Please check our website for latest information.
Document 305
Revised 09/30/05
© Coilcraft, Inc. 2007
Document 301 -1
Output Choke Inductors
For National Semiconductor
LM5030 Controller IC
These low-profile inductors are designed specifically for
the National Semiconductor LM5030 Push-Pull Current
Mode PWM Controllers. The 33 Watt design specifies
our A9785-B, the 35 Watt design uses the A0153-A and
the 60 Watt design uses the B0414-A.
They are the output chokes for Coilcraft’s planar trans-
formers (A9784-B, A0152-A and B0310-A). The auxil-
iary winding controls the input current to the PWM. All
inductors offer 1500 Vrms main to auxiliary isolation.
The National Semiconductor design also specifies
Coilcraft’s MSS6132-103 power inductor for the input
choke. Refer to separate data sheets for additional
information on these Coilcraft parts.
Request free evaluation samples by contacting Coilcraft
or visiting
www.coilcraft.com.
Part
number
1
A9785-BL_
A0153-AL_
B0414-AL_
Power
(W)
33
35
60
Inductance
2
at 0 Adc
±10% (µH)
7.0
7.0
13.8
Inductance
2
±10% (µH)
6.71 @ 12.0 Adc
6.20 @ 10.0 Adc
13.80 @ 5.0 Adc
DCR max (Ohms)
Main
Aux
winding
winding
0.0066
1.95
0.0066
1.32
0.0098
0.68
Turns ratio
main : aux
1
:
3.2
1
:
2.2
1
:
1.09
I
sat
3
(A)
15.0
14.5
8.0
I
rms
4
(A)
12.5
12.5
9.5
1. When ordering, please specify
packaging
code:
B0414-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.
1. Inductance measured at 10.0 kHz, 0.1 Vrms.
2. DC current at which inductance drops 12% (typ) from its value without
current.
3. Average current for a 40°C rise from 25°C ambient.
4. Operating temperature range -40°C to +85°C.
5. Electrical specifications at 25°C.
0.400 max
10,16
0.004 / 0,10
1.020 max
25,91
1.040
26,42
0.910 max
23,11
0.148 typ
3,76
Weight:
Terminations:
Tape and reel:
11.3 – 11.9 g
Nickel/tin over phos bronze
200/13″ 44 mm tape width
Recommended
Land Pattern
0.060 × 0.090
typ
1,52 × 2,29
Specifications subject to change without notice.
Please check our website for latest information.
Document 301-1
Revised 02/07/05
© Coilcraft, Inc. 2007
Document 301 -2
Output Choke Inductors for LM5030 IC
Typical L vs Frequency
100
Typical L vs Current
100
Inductance (µH)
B0414-A
10
A9785-B
A0153-A
Inductance (µH)
B0414-A
10
A0153-A
A9785-B
1
0.1
1
10
1
1
10
100
Frequency (MHz)
Current (A)
Typical Temperature Rise vs Current
70
Temperature rise (from 25°C)
60
50
40
30
20
10
0
0
2
4
6
8
B0414-A
A9785-B
A0153-A
10
12
14
16
Current (A)
Specifications subject to change without notice.
Please check our website for latest information.
Document 301-2
Revised 02/07/05
© Coilcraft, Inc. 2007
