PA1312NL_11 Datasheet, PDF (1/2 Pages) Pulse A Technitrol Company – Power Beads - PA131xNL Series Coupled Inductors

smt POWer inductors
Power Beads - PA131xNL Series Coupled Inductors
Gen 1.0 Coupled Inductors (2,3,4 and 5 phases)
For use only with Volterra chipsets
Coupled Inductors enable:
•Phase ripple current reduction due to AC magnetic
field cancellation within the inductor core
•Improved efficiency due to lower peak currents
•Reduction in required output capacitance
Halogen Free
Electrical Specifications @ 25°C — Operating Temperature -40°C to +130°C
Pulse
Part No.
Number
of
Coupled
Phases
Equlavent¹
Transient
Inductance
per Phase
(nH ±20%)
Irated²
per
Phase
(Adc)
Open Circuit Ind. per Phase³
nH ±20%, 0Adc
L1 L2 L3 L4 L5
(1-2) (3-4) (5-6) (7-8) (9-10)
Open Circuit Ind. per Phase³
nH Min, 5Adc
L1 L2 L3 L4 L5
(1-2) (3-4) (5-6) (7-8) (9-10)
DCR/Phase⁴
(mW)
TYP MAX
PA1312NL
2
50
40
310 310
−
−
− 240 240 −
−
−
PA1313NL
3
50
40
370 450 370 −
− 285 350 285 −
− 0.425 0.5
PA1314NL
4
50
40
370 490 490 370
−
285 385 385 285
−
PA1315NL
5
50
40
370 470 490 470 390 285 365 385 365 285
Notes
1.In a non-coupled multi-phase topology, the power supply
sees the same inductance during transient and steady-state
conditions. As a result, any attempt to lower the inductance
to improve transient response has the negative result of
increasing ripple and peak currents throughout the system
during steady-state operation. However, in a coupled inductor
multi-phase topology, the interaction of magnetic fields from
each phase enables an overall reduction in ripple current
during steady-state operation and a lower equivalent induc-
tance during transient operation. The equivalent transient
inductance per phase, as listed, represents the actual value
of inductance that would be required in an non-coupled topol-
ogy to realize the same transient performance. This value is
achieved by core and winding geometry and is not directly
measured by Pulse. For more information on the operation of the
coupled inductor topology, please contact Volterrra.
2.The rated current per phase is based on Volterra’s testing of the
Pulse coupled inductors.
3.The open-circuit inductance per phase is the measured inductance
(at specified current) across each phase when all other phases are
open-circuit. The open circuit inductance is equal to the magne-
tizing inductance per phase (Lm) plus the equivalent transient
inductance (Lk).
4.The nominal value of DCR/phase is for reference only. For produc-
tion testing, the maximum limit is used.
PA1312NL
Mechanical
PA1312AHL
Schematic
Weight . . . . . .3.0 grams
Tape & Reel . . . . 650/reel
Tray . . . . . . . . . . . 60/tray
Dimensions:
Inches
mm
Unless otherwise specified, all tolerances are
±
.010
0,25
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www.pulseelectronics.com
53
SPM2007 (1/11)