Advanced Power Electronics Corp today announced the APU3037-3 controller IC designed to be a low cost synchronous buck regulator for on-board dc to dc converter applications. Explains Ralph Waggitt, President/CEO, Advanced Power Electronics Corp. (USA): “Today’s ASIC products are migrating down to supply voltages of 1.8V and even lower.
If you couple this trend with currents in excess of 3A, the result is that many linear regulators are simply too lossy to be used when the input supply is 5V or even 3.3V. The APU3037-3 together with two N channel MOSFETS such as the AP60T03 can provide a low cost solution for such designs.”
The APU3037-3 features an internal 200kHz oscillator (400kHz for the A version), under-voltage lockout for both Vcc and Vc supplies, and external programmable soft-start function as well as output under-voltage detection that latches the device off when an output short is detected. It operates with single 5 or 15V supply in fixed frequency voltage mode and has a 500mA peak output drive capability.
The package is halogen-free and compliant with both current RoHS and REACH environmental requirements for hazardous materials.
Applications include DDR memory source/sink Vtt, graphics cards and hard disk drives, or any other products that require a low cost on board 1.8, 2.5, 3.3 or 5V dc/dc converter.