9A power supply sets new power density benchmark

The EN5395QI 9A DC/DC converter sets a new standard for power density by delivering over 76W per square inch (over 11W per square centimeter). It features a proprietary integrated-inductor technology and ultra-high switching frequency, enabling the PwrSoC (power supply on a chip) to achieve high noise immunity with a very small footprint. The part also offers two options for setting the output voltage, providing the utmost flexibility for the user.

The 9A synchronous buck PWM (pulse-width modulation) DC/DC converter integrates the inductor, MOSFETS, and controller into a 10mm x 12mm x 1.85mm package. The part requires as few as five external MLCC capacitors for a complete power management solution, with a total footprint of 250mm². The EN5395QI delivers up to 30W of continuous output power, and achieves up to 93 percent efficiency.

In addition to small footprint, low part count, and low noise, the EN5395QI simplifies design as a result of output voltage scaling. Output voltage is programmed using a three-pin voltage-ID (VID) input, allowing designers to choose one of seven pre-programmed output voltages. This allows developers to conserve power by optimizing the part’s output voltage to each specific load requirement. It also provides the flexibility to use the same device for multiple solutions that require different output voltages. Increasing load current capacity is also simple – from two to four devices can be placed in parallel to provide a single load with up to 36A of output current.

The EN5395QI is a point-of-load power regulator designed to meet the precise voltage and fast transient requirements of low-power processors and SoCs used in a variety of markets, including storage, networking, computing, telecom, audio/video, and other distributed power architectures. With its low-noise PWM topology, the 9A part is ideally suited for noise-sensitive applications.