DC/DC converters achieve 90% efficiency
With a continuous load current of up to 3A, the AP6507 and AP6508 synchronous dc/dc buck converters from Diodes Incorporated are designed to achieve an operating efficiency up to 90%.
The converters have input voltage ranges of 4.5 to 18V and 4.5 to 21V and, according to Diodes, support the needs of low voltage 5 and 12V bus systems in a range of consumer electronic products. Using an external resistor divider, the adjustable output of the converters can be set to any voltage down to 0.8V. To meet demands for increased power densities, they are provided in space saving exposed pad package options.
The devices operate at a high switching frequency of 500kHz and can also make use of smaller external components. The combination of high and low side mosfet switches, internal compensation and protection features enable significant pcb space savings.
