Murata has introduced the UltraBK family of compact, low-profile, fully integrated DC/DC converters.

The UltraBK connectors are aimed at space-constrained applications such as IT and network infrastructure equipment.

In addition to unprecedented space savings, they deliver high energy efficiency, high reliability, outstanding low-noise performance, and fast transient response.

The converters achieve their extremely low height and compact footprint using an innovative two-stage design.

This design combines a switched-capacitor charge pump followed by a smaller buck or boost converter with lower-voltage power MOSFETs and reduced output inductance compared to conventional designs.

The capacitor network provides almost lossless conversion of the input voltage at any ratio, enabling overall operating efficiency as high as 90.5%.

The output inductor is approximately 10 times smaller than for a comparable conventional circuit, allowing the entire converter to fit in a 10.5 mm x 9.0 mm LGA package only 2.1 mm. EMI is typically 20 dB lower.

Murata is launching the UltraBK  family by introducing four buck converters that provide a choice of 4 A and 6 A output ratings and the option of a built-in I2C port to allow digital configuration and control. PThe converters have a wide input voltage range of 6.0 V to 14.4 V, with programmable output voltage from 0.7 V to 1.8 V.

The 4A MYTNA1R84RELA2RA and 6A MYTNA1R86RELA2RA, and similar MYTNC1R84RELA2RA and MYTNC1R86RELA2RA with I2C control, are now available from Murata’s distributors.