Component Management

Integrated POL DC/DC regulators with a fast COT engine plus SVID and I²C/PMBus digital interfaces

8th September 2022
Sheryl Miles

As artificial intelligence (AI) technology is integrated into massive data centres, the demand for higher performance will continue to increase.

Following this trend, high power density and energy-efficient solutions for smart enterprise systems have also become challenging.

As a result, Infineon Technologies AG has introduced a family of OptiMOS 5 IPOL buck regulators with VR14-compliant SVID standard and I²C/PMBus digital interfaces for Intel/AMD server CPUs and network ASICs/FPGAs.

Housed in a 5 x 6mm² PQFN package, these devices are a fully integrated, and efficient solution for next-gen server, storage, telecom, and datacom applications, as well as distributed power systems.

The OptiMOS IPOL single-voltage synchronous buck regulator TDA38640 supports up to 40A output current. The device comes with Intel SVID and I²C/PMBus digital interfaces and can be used for Intel VR12, VR12.5, VR13, VR14, IMPVP8 designs, and DDR memory without significant changes to the bill of materials (BOM).

Infineon’s TDA38740 and TDA38725 digital IPOL buck regulators support up to 40A and 25A output current, respectively and come with a PMBus interface. All three new devices use Infineon’s proprietary fast constant on time (COT) PWM engine to deliver transient performance while simplifying the design development.

The onboard PWM controller and OptiMOS FETs with integrated bootstrap diode make these devices a small footprint solution with efficient power delivery.

In addition, they provide the required versatility by operating in a broad input and output voltage range while offering programmable switching frequencies from 400kHz to 2MHz. A multiple time programming (MTP) memory allows customisation during design and high-volume manufacturing, significantly reducing design cycles and time-to-market.

They also offer a digitally programmable load line that can be set via configuration registers without external components, resulting in a simplified BOM. The device configuration can be defined using Infineon’s XDP Designer GUI and is stored in the on-chip memory.


OptiMOS fully integrated POL single-voltage synchronous buck regulators TDA38640, TDA38740, and TDA38725 are now available in a small 5 x 6mm² PQFN package.

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