Cherokee Launches CBQ5 Quarter-Brick IBA Converter
Cherokee International LLC (Tustin, CA), a manufacturer of switch-mode power supplies, launched its new CBQ5, a 5:1 fixed-ratio, quarter-brick, isolated intermediate bus converter, which offers an ultra-high efficiency up to 97%, delivers 9.6 V at 33 A with a maximum power density up to 245 W/in³ per cubic inch, and measures 1.45 in x 2.3 in x 0.44 in. The converter is suitable for wider-range, input-voltage requirements for North American central office and telecom applications such as optical networks, routers, enterprise servers, and storage area networks.
The CBQ5 bus converter offers the telecom sector a cost-effective solution that functions well with point-of-load (POL) and discrete circuit designs that power microprocessors, other chipsets, and converters. Unlike typical intermediate-bus-architecture (IBA) converters that step down a regulated 48 V, the CBQ5 converter operates over a wide input range of 38 V to 55 V to account for unregulated energy or battery systems that typically power telecom environments. The converter steps down the voltage to a fixed 5:1 ratio, providing a 9.6 V output from a 48 V nominal input. The CBQ5 converter comes in a standard quarter-brick footprint and provides full power, up to 350 W, in extreme operating ambient conditions of 70 °C at 300 LFM. The converter delivers ultra-high efficiencies, and very little heat is dissipated.
The CBQ5 (part number CBQ53348H1) is available in open-frame and base-plate versions, as well as both positive and negative logic modules, and is priced starting at $32 for quantities of 1,000 units. Samples are available now.
