Renesas Electronics has announced two new fully encapsulated digital DC/DC PMBus power modules that board high power density and efficiency. The dual ISL8274M operates from a 5 V or 12 V power rail, provides two 30 A outputs and up to 95.5% peak efficiency in a compact 18 mm x 23 mm2 footprint. The new ZL9024M operates from a 3.3V rail and outputs 33 A of power in a 17 mm x19 mm2 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 aging. Eliminating the need for an external discrete compensation network also saves board space and additional BOM cost. The ISL8274M supports input voltages from 4.5 V to 1 4V, while the ZL9024M accepts input voltages from 2.75 V to 4 V. Both modules offer adjustable output voltages as low as 0.6 V.
The encapsulated modules use Renesas’ proprietary High Density Array (HDA) package, which offers unmatched 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 ISL8274M and ZL9024M also provide several protection features that ensure safe operations under abnormal operating conditions, further enhancing their robustness and reliability.
Key Features of the ISL8274M Digital Power Module include:
- 30 A dual digital switch mode power supply with input voltage range from 4.5 V to 14 V and programmable Vout from 0.6 V to 5 V
- PMBus-enabled solution for full system configuration, telemetry and monitoring of all conversions and operating parameters
- Programmable Vout, soft-start, soft-stop, sequencing, margining and under-voltage, over-voltage, under-current, over-current, under temperature and over-temperature
- Monitors Vin, Vout, Iout, temperature, duty cycle, switching frequency, and faults
- Power good indicator, and ±1.2% Vout accuracy over line, load, and temperature
- Pin-strap mode using external resistors for standard settings
- Internal nonvolatile memory saves module configuration parameters and fault logging
Key Features of the ZL9024M Digital Power Module include:
- 33 A digital switch mode power supply with input voltage range from 2.75 V to 4 V and programmable Vout from 0.6 V to 1.5 V
- PMBus-enabled solution for full system configuration, telemetry and monitoring of all conversions and operating parameters
- Programmable Vout, soft-start, soft-stop, sequencing, margining and under-voltage, over-voltage, under-current, over-current, under temperature and over-temperature
- Monitors Vin, Vout, Iout, temperature, duty cycle, switching frequency and faults
- Power good indicator, and ±1.2% Vout accuracy over line, load, and temperature
- Pin-strap mode using external resistors for standard settings
- Internal nonvolatile memory saves module configuration parameters and fault logging
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The ISL8274M is available now in a thermally enhanced 18 mm x 23 mm x 7.5 mm HDA package, and is priced at $39 (1,000). An ISL8274MEVAL1Z evaluation board is available for $150.
The ZL9024M is available now in a thermally enhanced 17 mm x 19 mm x 3.5 mm HDA package, and is priced at $29 (1,000s). The ZL9024MEVAL1Z evaluation board is available for $95.
Renesas Electronics | www.renesas.com
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