New power modules

Louise Smyth

Renesas Electronics has launched two new fully encapsulated digital DC/DC PMBus power modules. The dual ISL8274M operates from a 5V or 12V power rail, provides two 30A outputs and up to 95.5% peak efficiency in a compact 18mm x 23mm footprint. The new ZL9024M operates from a 3.3V rail and outputs 33A of power in a 17mm x19mm footprint. They deliver point-of-load (POL) conversions for advanced FPGAs, DSPs, ASICs and memory used in servers, telecom, datacom, optical networking and storage equipment. Both devices are easy-to-use, PMBus-configurable power supplies that include a controller, MOSFETs, inductor and passives encapsulated inside a module that increases available board space and reduces bill of materials (BOM).

 
The ISL8274M and ZL9024M digital power modules leverage Renesas’ patented ChargeMode control architecture, which provides the highest efficiencies with better than 90% on most conversions. The power modules also provide a single clock cycle fast transient response to output current load steps common in FPGAs and DSPs that process power bursts. Their compensation-free design keeps the modules stable regardless of output capacitor changes due to temperature, variation or ageing. Eliminating the need for an external discrete compensation network also saves board space and additional BOM cost. The ISL8274M supports input voltages from 4.5V to 14V, while the ZL9024M accepts input voltages from 2.75V to 4V. Both modules offer adjustable output voltages as low as 0.6V.