Digitally Controlled Pol Converters in High Density Packaging

Murata has added an expanded range of digitally controlled, PMBus compatible OKDL products to Murata Power Solutions’ Okami series of non-isolated point-of-load (PoL) DC-DC converters. The OKDL-T/6-W12, OKDL-T/12-W12, and OKDL-T/18-W12 deliver 6, 12, and 18A respectively. They are also capable of being monitored and configured via PMBus communications. Exhibiting versatility, the new models accept input voltages from 4.5V to 14V and have an adjustable output voltage range from 0.6V to 5V (1.8V max for 18A model). Designed for a minimal footprint, the high-power-density LGA modules measure just 12.2 x 12.2 x 8.0 mm. The OKDL converters offer a typical efficiency figure of 91.6% at 12Vin, and are able to operate in a temperature range of -30 to +95 degrees C.

The wide operating temperature range of the OKDL products makes it ideal in applications such as networking, computing, servers, telecom, industrial, and other applications of distributed power. The OKDL products are designed to power low-voltage silicon devices such as CPUs, FPGAs, microcontrollers, logic circuits, memory, and other analog/digital devices in mixed voltage systems.

With their digital control and PMBus compatibility, the converters offer easy user configuration and monitoring. All power management functions can be reconfigured for user-specific needs using the PMBus interface.

Standard features include short circuit, over current, over voltage, over temperature, and input under voltage protection, voltage margining and tracking, power good, remote sense, and remote on/off. The converters employ adaptive compensation of the PWM control loop, a phase spreading feature to reduce input capacitance, synchronization to reduce EMI filtering, and an optimized dead time control.