DC/DC converters from Diodes Incorporated increase efficiency

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. The AP6507 is priced at $0.70 each in 10k quantities and the AP6508 at $0.78 each in 10k quantities. For further information visit www.diodes.com