SMT POWER INDUCTORS
Power Beads - PA131xNL Series Coupled Inductors
Two% three% four anA five phase CoupleA InAudtors for
VR±ꢀ/VR±± applidations
For use only with Volterra VT±±ꢀ1M ®% VT±±±1M ® dhipsets
Coupled Inductors enable:
•
Output ripple durrent reAudtion Aue to 0C magnetid
fielA dandellation within the inAudtor dore
•
•
•
ImproveA effidiendy Aue to lower peak durrents
ReAudtion in requireA output dapaditande
Faster transient response Aue to the ability to use
lower effedtive inAudtande values
•
•
ReAudeA overshoot/unAershoot Auring loaA transients
Frequendy range up to 2MHz
Electrical Specifications @ 25°C — Operating Temperature -40°C to +130°C
1
Number
of
Coupled
Phases
Equivalent
Transient
Inductance
per Phase
(nH)
Irated2
Magnetizing Inductance per Phase3
Magnetizing Inductance per Phase4
DCR/Phase5
TYP MAX
Pulse
Part No.
per
nH ±±15% ꢀ0Ad
nH MIN% 10Ad
Phase
(0Ad)
L1
L2
(3-4)
L3
(1-6)
L4
(7-8)
L5
(9-±ꢀ)
L1
L2
(3-4)
L3
(1-6)
L4
(7-8)
L5
(9-±ꢀ)
(±-2)
(±-2)
PA1312NL
PA1313NL
PA1314NL
PA1315NL
NOTES:
2
3
4
1
1ꢀ
1ꢀ
1ꢀ
1ꢀ
4ꢀ
4ꢀ
4ꢀ
4ꢀ
3ꢀꢀ
36ꢀ
36ꢀ
36ꢀ
3ꢀꢀ
44ꢀ
48ꢀ
46ꢀ
-
-
-
24ꢀ
281
281
281
24ꢀ
31ꢀ
381
361
-
-
-
36ꢀ
48ꢀ
48ꢀ
-
-
-
281
381
381
-
-
-
ꢀ.421 ꢀ.1
36ꢀ
46ꢀ
281
361
36ꢀ
281
2.The rateA durrent per phase is baseA on Volterra's testing of the Pulse
doupleA inAudtors.
±. In a non-doupleA multi-phase topology% the power supply sees the same inAud-
tande Auring transient anA steaAy-state donAitions. 0s a result% any attempt to 3.The magnetizing inAudtande per phase is the measureA inAudtande (at ꢀ0Ad)
lower the inAudtande to improve transient response has the negative result of
indreasing ripple anA peak durrents throughout the system Auring steaAy-state
operation. However% in a doupleA inAudtor multi-phase topology% the interadtion
of magnetid fielAs from eadh phase enables an overall reAudtion in ripple
adross eadh phase when all other phases are open-dirduit. This inAudtande is a
Pulse proAudtion measurement. 0lthough the equivalent inAudtande per phase
Auring steaAy-state is signifidantly higher then the equivalent transient inAud-
tande as listeA% it shoulA not be donfuseA with the magnetizing inAudtande.
durrent Auring steaAy-state operation anA a lower equivalent inAudtande 4.The magnetizing inAudtande per phase is the measureA inAudtande (at 10Ad)
Auring transient operation. The equivalent transient inAudtande per phase% as
listeA% represents the adtual value of inAudtande that woulA be requireA in an
non-doupleA topology to realize the same transient performande. This value is
adross eadh phase when all other phases are open-dirduit. This inAudtande is a
Pulse proAudtion measurement. This test is performeA to verify that the inAud-
tor dan withstanA a phase-to-phase loaA imbalande of 10Ad without saturating.
adhieveA by dore anA winAing geometry anA is not Airedtly measureA by Pulse. 1.The nominal value of DCR/phase is for referende only. For proAudtion testing%
For more information on the operation of the doupleA inAudtor topology% please
dontadt Volterrra.
the maximum limit is useA.
6.The VT±±ꢀ1M anA VT±±±1M are registereA traAemarks of Volterra
SemidonAudtor Corporation.
®
®
Schematic
Mechanical
PA1312NL
Weight . . . . . . . . . . .3.0 grams
Tape & Reel . . . . . . . .650/reel
.720
.354
9,00
MAX
18,29
L1
L2
Tray . . . . . . . . . . . . . . .60/tray
Inches
mm
Dimensions:
1
2 3
4
.354
9,00
MAX
.010
0,25
PA1312NL
Unless otherwise specified, all tolerances are ±
Date Code Country of Origin
1
2
3
4
.134
3,40
.193
4,90
4X
2X
.559
14,20
SUGGESTED PAD LAYOUT
.732
18,60
1.260 ± .012
32.00 ± 0,30
.205
5,20
MAX
.217
5,50
.366
9,30
.630
16,00
USER DIRECTION OF FEED
TAPE & REEL LAYOUT
•
•
•
•
•
•
USA 858 674 8100 UK 44 1483 401 700 France 33 3 84 35 04 04 Singapore 65 6287 8998 Shanghai 86 21 32181071 China 86 769 5538070 Taiwan 886 2 26980228
www.pulseeng.dom
P636.0 (±±/ꢀ1)
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