Renesas Electronics ISL8274M dual 30 A and ZL9024M single 33 A power modules

Renesas Electronics has announced two fully encapsulated digital DC/DC PMBus power modules that deliver high power density and efficiency. The dual ISL8274M operates from a 5 or 12 V power rail, provides two 30 A outputs and has up to 95.5% peak efficiency in an 18 x 23 mm² footprint. The ZL9024M operates from a 3.3 V rail and outputs 33 A of power in a 17 x 19 mm² footprint.

The devices deliver point-of-load (POL) conversions for advanced FPGAs, DSPs, ASICs and memory used in servers, telecom, datacom, optical networking and storage equipment. They 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.

The digital power modules leverage Renesas’s ChargeMode control architecture, which provides better than 90% efficiency 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, according to the company. The ISL8274M supports input voltages from 4.5 to 14 V, while the ZL9024M accepts input voltages from 2.75 to 4 V. Both modules offer adjustable output voltages as low as 0.6 V.

The encapsulated modules use Renesas’s High Density Array (HDA) package, which offers good electrical and thermal performance through a single-layer conductive substrate that reduces lead inductance and dissipates heat primarily through the system board. The HDA’s copper lead-frame structure allows the modules to operate at full load over a wide temperature range with no airflow or heatsinks. The modules also provide several protection features that ensure safe operations under abnormal operating conditions.