Enpirion Releases Ultra-Small 3A DC-DC Converter

Enpirion announced the availability of its ultra-small 3A synchronous buck dc-dc converter with an integrated inductor, which the company states delivers a radical increase in power density over competing solutions. The EN5337QI is a power supply on a chip (PwrSoC) in a 28 mm² package – less than half the size of Enpirion’s previous 3A solutions, and said to be one-third the size of competitor’s offerings. With a power density of 149 W/in² (23 W/cm²), the EN5337QI sets a new standard for low-power switching regulators.

"Designers are being challenged to pack more functionality into smaller PCB form factors, while improving overall system power efficiency,"said Dr. Ashraf Lotfi, Enpirion’s founder and CTO. "To address these challenges, designers need power solutions like the EN5337 that can deliver high-efficiency power in a very small form factor."

Enpirion’s 3A power converters are well suited for high-volume, mass-market electronics such as DTV, audio, computing, multi-function printers, set-top boxes/DVRs, and storage. The EN5337QI is suitable for product designs that are space-constrained, noise-sensitive, and require high efficiency and simple, reusable power solutions.

Key features of the EN5337QI include: 3A continuous output current capability; wide input voltage range of 2.375 to 5.5V; 92% peak efficiency; low voltage ripple and noise; 5 MHz operating frequency, enabling small input and output capacitors; switching frequency can be phase locked to an external clock to eliminate or move unwanted beat frequencies out of band; and protection features, including over-current protection, thermal shutdown and under-voltage lockout circuit.

The EN5337QI is available now, and pricing is set at $2.50 for quantities of 1000 parts.