Power Electronics

Ultra-Small 3 A DC-DC Converter

Enpirion has announced the availability of its ultra-small 3 A synchronous buck dc-dc converter with an integrated inductor, delivering a radical increase in power density over competing solutions. The EN5337QI is a power supply on a chip (PwrSoC) in a tiny 28 mm2 package - less than half the size of Enpirion's previous 3 A solutions, and 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.

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

Key features of the EN5337QI include:

  1. 3 A continuous output current capability
  2. Wide input voltage range of 2.375 V to 5.5 V
  3. 92% peak efficiency
  4. Low voltage ripple and noise
  5. 5 MHz operating frequency, enabling small input and output capacitors
  6. Switching frequency can be phase locked to an external clock to eliminate or move unwanted beat frequencies out of band
  7. 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.

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