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The SupIRBuck family of point-of-load (POL) voltage regulators integrates IR’s benchmark high performance synchronous buck control ICs and HEXFET® trench technology MOSFETs in a compact 5mm by 6mm Power QFN package, shrinking the silicon footprint by 70 percent compared to discrete solutions, and offering between 8 to 10 percent higher full-load efficiency than competing monolithic ICs.
Designed for 4, 7 and 12 amps of output load current at 600kHz switching frequency, the IR38xx operates from a wide input voltage range of between 2.5 V to 21 V, and provides output voltage as low as 0.6 V. Common features include pre-bias start up, fixed 600kHz switching frequency, hiccup current limit, thermal shutdown, and precise output voltage regulation. Optional features include tracking, programmable power good, and 300kHz switching frequency to provide an additional 2 amps of output current capability. The SupIRBuck family’s thermally enhanced package with slim 0.9mm profile, allows mounting on the back side of the motherboard, making the devices ideally suited for space constrained high-density server applications.
Benefits
 | Ease of implementation |
| Extremely flexible |
| Higher efficiency versus monolithic solution |
| Much higher density versus equivalent discrete solution |
| Fewer discrete components |
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FEATURES
| 600KHz controller with ½ Bridge FETs |
| 4A/7A/12A Output Options |
| Programmable Soft Start with Enable |
| Programmable Over Current Protection |
| 0.6V 1.5% accurate reference |
| 2.5V to 15V Conversion Input |
| Pre-Bias Protection |
| 5x6 MLP package |
OPTIONAL FEATURES
| 300KHz Switching Frequency |
| Tracking Output |
| Programmable PGOOD |
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IR’s optimized power management system solutions deliver benchmark power density, efficiency and performance to meet the challenge of dramatically reducing annual kilowatt-per-hour savings and annual operating costs for data centers without the design trade-offs of technologies and performance versus cost and ease-of-design.
