The IR3883 can enter diode emulation mode during light-loads to save power, according to Infineon.
Infineon Technologies has rolled out a new DC-DC regulator, the IR3883, targeting high density Point of Load applications where high efficiency, high reliability and good thermal behaviour are required.
The IR3883 provides up to 3A continuous current from 4.5V to 14V in a 3mm x 3mm PQFN package. It can enter diode emulation mode during light-loads to save power. Moreover, it can enter a low quiescent current mode making it ideal for standby power supplies to fulfil energy savings regulations. DCM can be disabled for applications requiring very low ripple or to avoid interference/beat frequency. The precise output voltage allows accurate output voltage from 0.5V to 5V. A thermally compensated internal current limit with three selectable levels overcomes the need to oversize the inductor and saves a resistor.
This gives a more overall robustness because digital OCSET eliminates false trips from external noise and simplifies layout, according to Infineon. The footprint is optimised for easy layout as well. For example, PVIN/PGND and SW/BOOT are adjacent for perfect bypass capacitors placement and less noise and easier design. The IR3883 also features all protection functions required for enterprise: pre-bias startup, thermal shutdown, over current protection, internal soft-start, enable pin and power GOOD output.
The device is suitable for netcom, telecom, servers and storage solutions, according to Infineon. The voltage regulator employs an enhanced stability engine that makes it stable with ceramic capacitors. Infineon said the IR3883 can save up to five components and facilitates the layout for very small PCB size of less than 100 mm².
IR3883 is available in high quantities, and samples can be ordered. An online design tool (Power Desk) and a reference design IRDC3883 are available.