Power

DC/DC converters from Diodes Incorporated increase efficiency

6th May 2011
ES Admin
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Datasheets
Delivering a continuous load current of up to 3A the AP6507 and AP6508 synchronous DC/DC buck converters from Diodes Incorporated offer designers of distributed power systems an operating efficiency as high as 90%. With input voltage ranges of respectively 4.5V to 18V and 4.5V to 21V, these compact converters will support the needs of low voltage 5V and 12V bus systems in a broad range of consumer electronic products including monitors, LCD TVs and set-top boxes.
Using a simple external resistor divider, the adjustable output of the DC/DC converters can be set to any voltage down to as low as 0.8V. To meet demands for increased power densities, the converters are provided in space-saving exposed pad package options: the AP6507 in SO-8EP and the AP6508 in DFN4030-14EP.

By operating at a high switching frequency of 500kHz, the converters can also make use of smaller external components and combined with the integration of high- and low-side MOSFET switches, internal compensation and protection features, enable significant PCB space savings.

The integrated overcurrent protection and thermal shutdown features of both DC/DC converters combine to increase system stability and achieve long-term reliability. Additional features provided by the AP6508 are an externally programmable soft-start function and a power good flag, enabling the implementation of power sequencing and ramp control.

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