Infineon has unveiled a fully-integrated MOSFET voltage regulator for high density Point of Load applications where high efficiency, high reliability and good thermal behavior are required. Examples include NetCom, Telecom, Servers and Storage solutions.
The IR3883 allows very small PCB size of less than 100 mm² by eliminating extra components.
An enhanced stability engine makes the voltage regulator stable with ceramic capacitors without compensation for an easy design. Other solutions require extra components for stability and for ripple injection, according to Infineon.
The device provides up to 3 A continuous current from 4.5 V to 14 V in a small 3 x 3 mm PQFN package. As stated in the announcement, the device can enter diode emulation mode during light-loads to save power. It can also enter a low quiescent current mode making it ideal for standby power supplies to fulfill 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 0.5 V to 5 V. 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. The footprint is optimized 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.
Protection functions incorporated in the device required for enterprise include: pre-bias startup, thermal shutdown, over current protection, internal soft-start, enable pin and power GOOD output.
The DC-DC regulator IR3883 is available in high quantities, samples can be ordered. Infineon also has an online design tool (Power Desk) and a reference design IRDC3883 to ease development. More information is available at www. infineon.com/analog-ipol.
For full Press release, click here.