Step down dc/dc converter modules address heat issues
ROHM Semiconductor has developed a series of step down dc/dc converter modules that integrate all required external components, including input/output capacitors, into a compact, high heat dissipation package.
The BP5275 series designed for use as general purpose power supplies in a range of electronic devices.
The company says the series addresses the issue of the relatively large amount of heat generated by components and utilises an in house high frequency (1.5MHz) switching regulator IC. A synchronous rectification system is incorporated for high efficiency operation (93% for 6V?5V conversion). According to ROHM, mounting area is reduced to 1/6th of the conventional size.
The high heat dissipation package enables direct heat dissipation from the device to an aluminum heat sink. An external heat sink can be mounted, which ROHM claims increases output current capability to 800mA.
ROHM says the 3 terminal, pin compatible configuration enables increases in power supply efficiency without requiring comprehensive modifications.
