A controller IC has been developed by Advanced Power Electronics Corp. that is described as being a low cost option for a synchronous buck regulator and is targeted at on-board dc to dc conversion.
The company’s APU3037-3 has 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.
The IC 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 and many other products.
Advanced Power Electronics Corp.
