PA3142HL Datasheet, PDF (1/3 Pages) Pulse A Technitrol Company – Coupled Inductor

SMT POWER INDUCTORS
Power Beads - PA314xHL Series Coupled Inductor
Gen 3.0 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
Electrical Specifications @ 25°C - Operating Temperature -40°C to +130°C
Part Number
Number
of
Coupled
Phases
Equivalent Transient¹
Inductance per Phase
(nH+/-20%)
Irated²
(Adc)
Imax²
Peak per Phase
(Adc)
OCL³
(nH Min, 0Adc)
DCR/Phase
(mW Max)
PA3142HL
2
150
PA3143HL
3
50
50
80
250
.25
PA3144HL
4
350
PA3145HL
5
450
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 inductance during transient operation. The
equivalent transient inductance per phase, as listed, represents the actual
value of inductance (Lk) that would be required in an non-coupled topology
to realize the same transient performance. For more information on the
operation of the coupled inductor topology, please contact Volterra.
2. The rated current and peak current are based on Volterra’s testing of the
Pulse coupled inductors. For more information, please contact Volterra.
3. The open-circuit inductance per phase is measured inductance across
each phase (ie: measured at (1-2) or (3-4) or (5-6) or (7-8), when all
other windings are open) when all other phases are open circuit. The
open circuit inductance is equal to the magnetizing inductance per
phase (Lm) plus the equivalent transient inductance (Lk).
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