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Fully Encapsulated PMBus Power Modules Deliver 10 A and 15 A

Renesas Electronics has announced a pair of new encapsulated hybrid digital DC/DC PMBus power modules, the 10-A ISL8280M and 15-A ISL8282M. The hybrid digital power modules offer best-in-class power density of 115 mA/mm-squared in a 12 mm x 11 mm package, with up to 95 percent peak efficiency. They are complete single-channel, synchronous step-down regulated power supplies that operate over a wide input voltage range of 5 V to 16 V.
Also announced are the new ISL8210M and ISL8212M analog power modules, offered in the same pin-to-pin compatible 12 mm x 11 mm package with 10 A and 15 A of output current, respectively. The hybrid digital and analog power modules provide point-of-load (POL) conversion for advanced FPGAs, DSPs, ASICs and memory used in servers, storage, optical networking, telecom, and a broad range of space-constrained industrial applications. Each device integrates a PWM controller, MOSFETs and inductor inside a new thermally optimized, Grid High Density Array (GHDA) encapsulated module. To complete the power supply, designers simply add input and output ceramic capacitors.

The ISL828xM hybrid digital and ISL821xM analog power modules feature integrated LDOs that enable single-supply operation. They leverage Renesas’ patented R4 high-speed control loop architecture with inherent line voltage feed-forward, providing designers a unique combination of ultra-fast load transient response and high noise immunity. Their proprietary Grid HDA package offers unmatched electrical and thermal performance through a single-layer conductive package substrate that efficiently transfers heat from the module to the system board, and dissipates it without requiring airflow or heatsinks – even under heavy load conditions.

Key Features of ISL828xM Hybrid Digital and ISL821xM Analog Power Modules:

  • 5 V to 16.5 V single rail input voltage, and 0.5 V to 5 V output voltage settings
  • ± 1.5% output voltage accuracy over line, load, and temperature with remote sense
  • 256 output voltage options configurable through a simple pin-strap resistor setting
  • Hybrid digital modules are SMBus/I2C/ PMBus v1.3 compatible up to 1.25 MHz
  • Seven switching frequency options from 300 kHz to 1 MHz
  • Selectable PFM/light load efficiency mode

Comprehensive fault protection with voltage, temperature and current protections

The PowerCompass tool helps users quickly identify the right power modules and other parts that match their specific requirements. Multiple power rails can be set up for more than 200 FPGAs, and designers can perform high-level system analysis and generate custom reference design files in minutes. The PowerNavigator tool works with PMBus, allowing power architects to set up hybrid digital power module telemetry, sequencing, and run-time configuration, while each module’s pin-strap configuration allows for standalone operation.

The ISL828xM hybrid digital power modules and ISL821xM analog power modules are available now from Renesas Electronics’ worldwide distributors with pricing ranging from $9.41 to $13.73 (1,000s).

Renesas Electronics |


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Fully Encapsulated PMBus Power Modules Deliver 10 A and 15 A

by Circuit Cellar Staff time to read: 2 min