PA0519 PULSE [Pulse A Technitrol Company], PA0519 Datasheet - Page 2

• Manufacturer Part Number: PA0519
• Description: Shielded Shaped Core - Spyglass Coupled Inductors
• Manufacturer: PULSE [Pulse A Technitrol Company]

Notes from Tables
1. These high current coupled inductors were designed for (but
2. The rated current as listed is either 85% of the saturation cur-
3. The saturation current is the current which causes the induc-
SMT POWER INDUCTORS
Shielded Shaped Core - Spyglass
Coupled Inductors
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Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product
names mentioned herein may be trademarks or registered trademarks of their respective owners.
© Copyright, 2007. Pulse Engineering, Inc. All rights reserved.
www.pulseeng.com
not limited to) use with the Pulse planar transformer series for
use in high density forward converter applications. The inductor
provides output filtering on the main winding, and at the same
time provides an efficient way to generate an isolated
primary side voltage for powering the converter’s switching
regulator integrated circuit. The above inductors have been
tested and approved by Pulse's IC partners and are cited in the
appropriate datasheet or evaluation board documentation at
these companies. To determine which IC and IC partners are
matched with the above Pulse part numbers, please see the IC
Cross Reference on the Pulse web page. Other inductance/cur-
rent ratings and turns ratios may be available. Please contact
Pulse Power Applications Engineering for more information.
rent or the heating current depending on which value is lower.
tance to drop by 15% at the stated ambient temperatures
(25°C, 100°C). This current is determined by placing the com-
ponent in the specified ambient environment and applying a
short duration pulse current (to eliminate self-heating effects) to
the component.
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4. The heating current is the dc current which causes the temper-
5. In high volt*time applications additional heating in the compo-
ature of the part to increase by approximately 45°C. This cur-
rent is determined by mounting the component on a PCB with a
.25" wide, 2oz. equivalent copper traces, and applying the cur-
rent to the device for 30 minutes with no force air cooling.
nent can occur due to core losses in the inductor which may
necessitate derating the current in order to limit the temperature
rise of the component. In order to determine the approximate
total losses (or temperature rise) for a given application both
copper and core losses should be taken into account.
Total Copper Losses (Pcu_total(W)):
where:
Core Losses (Pcore(W)):
Total Losses:
Temperature Rise:
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Pcu(W)= .001* DCR(mΩ) * (Irms
Irms = (Idc
ΔI = ripple current through inductor
Use the Inductor Voltage versus Core Loss table to
determine the approximate core losses
P total = Pcu total + CoreLoss
The approximate temperature rise can be found by looking
up the calculated total losses in the Temperature Rise vs.
Power Dissipation curve.
2
+ (ΔI/2)
2
)
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