The MPBS1 12-Volt DC-DC Power Supply is a small form-factor power conversion device. With an unregulated 12-volt input range, it provides output voltages of +12, +5, +3.3, -5, -12, and +5Vstandby. The aluminum open frame design allows the unit to be very compact and versatile. Featuring high power density, the unit can deliver up to 70 Watts of output power. The MPBS1 DC-DC Power supply is compatible with many low power commercially available MicroATX, FlexATX, and Micro-ITX Motherboards. Incorporating signals such as PS_ON and PS_OK, the behavior of the MPBS1 compared to a line powered AC-DC ATX power supply is identical.

Thermal

Heat generating ICs in this supply are mounted to an aluminum heatsink. Thermal compound and insoluating spacers are used to maximize heat transfer and proper electrical insolation. The high current ICs in this design exibit an operating junction temperature range of –40C to +125C

As a general rule, the supply should be cooled properly such that it is not too hot to touch. The optional CPU fan connector can be used to attach a fan directly to the MPBS1 or in the proxcimity such to provide air flow over the heatsink.

1.25"

3.8"

(31.8mm)

High

Wide

The MPBS1 is assembled with an open-frame aluminum chassis. The heatsink is made of machined aluminum stock and is 1/8 inch thick on the top and ¼ inch thick on the back.

1.5 inch (38.1mm) 4-40 screws hold the supply together and allow for mounting to thin metal, plastic, or other material.

When mounting the MPBS1 be sure to take into account that the bottom of the supply has exposed traces. To accommodate the small size of this power conversion unit, a metal chassis was substituted for an open frame design. Care needs to be exercised when integrating this unit into your system. No conductive material should come in contact with the bottom of the supply.

Automotive/Plexiglas Application

Mirco-ITX Application