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DC/DC converters suit 3Vdc voltage supply apps

Posted: 27 May 2010 ?? ?Print Version ?Bookmark and Share

Keywords:DC/DC converter? voltage supply? PoL converter?

 OKL-T/6-W5/12 DC/DC converter

Murata Power Solutions has expanded its Okami OKL range of non-isolated point-of-load (PoL) DC/DC converters that feature the innovative inspectable Land Grid Array (iLGA) package. The OKL series offers a high power density, high power conversion efficiency (up to 95.3%) solution for space constrained embedded applications and is a cost-effective alternative to discrete design approaches.

Designed for 3.3Vdc voltage supply applications such as telecoms equipment, the OKL-T/3-W5 and OKL-T/6-W5 series have an input voltage range of 2.4Vdc to 5.5Vdc, maximum output currents of 3A and 6A respectively and a programmable output range of 0.6Vdc and 3.63Vdc. The new modules achieve power conversion efficiency levels of up to 95.3% for the OKL-T/3-W5, and 93.5% for the OKL-T/6-W5.

The OKL-T/6-W12 series has a wide input voltage range of 4.5Vdc to 14Vdc making it useful in nominal 12Vdc input applications such as servers and storage. These devices have an output current of 6A and efficiency levels of up to 93% with a programmable output of between 0.6Vdc and 5.5Vdc.

All of the new converters are available with optional sequence/tracking feature and either negative or positive on/off logic.

The iLGA package, utilized on the OKL series, features small plated cutouts that allow easy probing and visual inspection of all signal pads which is not possible with conventional LGA configurations. The iLGA package exhibits excellent heat transfer characteristics with low thermal impedance path between the module and the application board.

All OKL modules are capable of driving high ceramic capacitive loads, up to 300?F for 6Amp in W5 and W12 series. 3A model supports 200?F output capacitance. Other design features include under voltage lockout, output short-circuit protection plus overcurrent and overtemperature protection.

OKL series PoL DC/DC converters use an industry accepted standard pad layout for interconnects. The new models have a footprint of just 12.2mm x 12.2mm. Overall height is 6.2mm for the OKL-T/3-W5 series, and 7.2mm for the OKL-T/6-W5 and the OKL-T/6-W12 series.

The new modules are RoHS-compliant and designed to meet UL/EN/IEC 60950-1 safety approvals and FCC emissions certifications. Operating temperature range is -40C to +85C.

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