DC/DC converter boosts light load efficiency

USA: Diodes Inc. has introduced the AP65200 synchronous DC-DC buck converter.

Designed to help meet energy efficiency standards under light load and standby conditions, the AP65200 achieves efficiency as high as 96 percent for a light load of 200mA and maintains efficiency above 70 percent down to 20mA. Its high level of integration and minimal external component count is well suited for distributed power architectures in consumer electronics products, including TVs, monitors and set-top boxes.

Offering an input voltage range from 4.75V to 18V, the AP65200 provides a single device solution for both 5V and 12V bus systems, and delivers up to 2A continuous output current with a 3A peak. Using a simple external resistor divider, the converter output voltage can be set from as low as 0.925V up to a maximum of 16V.

With its integrated low on-resistance high- and low-side MOSFETs, the SO-8 packaged AP65200 reduces board space and optimizes trace layouts. In addition, externally programmable soft-start and on-chip over-current and thermal shutdown protection features ensure system stability and long-term reliability.