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© Coilcraft, Inc. 2012

Specifications subject to change without notice.

Please check our website for latest information.

Document ML703-1 Revised 07/13/12

Dimensions are in

inches

mm

The ML590PND series of shielded coupled inductors was

designed specifically for high temperature applications –

up to 155°C. The excellent coupling coefficient (k

≥ 0.98)

makes it ideal for use in SEPIC applications. In SEPIC

topologies, the required inductance for each winding in a

coupled inductor is half the value needed for two separate

inductors, allowing selection of a part with lower DCR and

higher current handling.

These inductors provide high inductance, high efficiency,

excellent current handling and 500 V isolation in a very

rugged part. They are well suited for use as VRM induc-

tors in high-current DC-DC and VRM/VRD controllers.

They can also be used as two single inductors connected

in series or parallel, as a common mode choke or as a

1 : 1 transformer.

Core material Ferrite

Terminations Matte tin over nickel over phos bronze

Weight: 2.8 – 3.2 g

Ambient temperature –55°C to +105°C with Irms current, +105°C

to +155°C with derated current

Storage temperature Component: –55C to +155°C.

Tape and reel packaging: –55°C to +80°C

Winding to winding isolation 500 Vrms

Resistance to soldering heat Max three 40 second reflows at

+260°C, parts cooled to room temperature between cycles

Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /

85% relative humidity)

Winding-to-winding and winding-to-core isolation 500 Vrms

Enhanced crush-resistant packaging 500/13

″ reel;

Plastic tape: 24 mm wide, 0.35 mm thick, 16 mm pocket spacing,

6.6 mm pocket depth

L1

L2

Q1

C1

C2

+

++

––

D1

Load

Typical SEPIC schematic

Refer to Application Note, Document 639,

“Selecting Coupled Inductors for SEPIC Applications”

1260 COUPLED INDUCTORS