smt POWer inductOrs
Power Beads - PA249xHL Series Coupled Inductors
Gen2.0 Coupled Inductors (PA249xHL) enables higher
efficiency due to lower switching losses and lower
conduction losses
For use only with Volterra® multi-phase chipsets in
applications demanding a fast transient response and
high density
Halogen Free and RoHS compliant
elꢀꢁꢅꢆꢃꢁal spꢀꢁꢃfꢃꢁaꢅꢃoꢂꢇ @ 25°c — Opꢀꢆaꢅꢃꢂg tꢀꢄpꢀꢆaꢅꢈꢆꢀ -40°c ꢅo +130°c
Magnetizing Inductance per Phase3
DCR/Phase4
Equlavent1
Transient
Inductance
per Phase
(nH)
Number
of
Coupled
Phases
nH Min, 0Adc
(mW)
Isat2
per Phase
(Apk)
Pulse
Part No.
L1
L2
L3
L4
TYP
(1-2)
150
250
350
(3-4)
150
250
350
(5-6)
−
(7-8)
−
−
PA2492HL
PA2493HL
PA2494HL
2
3
4
50
50
50
80
80
80
250
0.31
350
350
NOTES:
1. In a non-coupled multi-phase topology, the power supply sees the same induc- 2.The rated current per phase is based on Volterra’s testing of the Pulse
tance during transient and steady-state conditions. As a result, any attempt to coupled inductors.
lower the inductance to improve transient response has the negative result of 3.The magnetizing inductance per phase is the measured inductance (at 0Adc)
increasing ripple and peak currents throughout the system during steady-state
operation. However, in a coupled inductor multi-phase topology, the interac-
across each phase when all other phases are open-circuit. The magnetizing
inductance is measured at 100kHz, 100mVrms.
tion of magnetic fields from each phase enables an overall reduction in ripple 4.The nominal value of DCR is measured from points a to b , as shown on the
current during steady-state operation and a lower equivalent inductance
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 topology 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.
mechanical drawing for PA2492HL.
sꢁhꢀꢄaꢅꢃꢁ
mꢀꢁhaꢂꢃꢁal
PA2492HL
2X .157
[4.00]
.276
[7.00]
.925 [23.5] MAX.
PULSE PA2492HL
8X .138
[3.50]
.433 [11.0]
MAX
D/C
MFG
L1
L2
.354 [9.00]
.106
[2.70]
1
2
3
4
.197 [5.0]
MAX
.25
[6.35]
.354
[9.00]
USA 858 674 8100
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