PMBus Power Modules Crank Up The Power

Renesas Electronics launched a pair of encapsulated hybrid digital dc/dc PMBus power modules, the 10A ISL8280M and 15A ISL8282M. Both modules offer a power density of 115 mA/mm2 in a 12 mm x 11 mm package, with up to 95% peak efficiency. They are complete single-channel, synchronous step-down regulated power supplies that operate over an input-voltage range of 5V to 16V.


Also on tap are the new ISL8210M and ISL8212M analog power modules, offered in the same pin-to-pin compatible 12 mm x 11 mm package with 10A and 15A 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.

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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. 


Features of ISL828xM Hybrid Digital and ISL821xM in a nutshell:

  • 4.5V to 16.5V single rail input voltage, and 0.5V to 5V 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 1.25MHz
  • Seven switching frequency options from 300kHz to 1MHz
  • Selectable PFM/light load efficiency mode
  • Comprehensive fault protection with voltage, temperature and current protections




Output Current

PMBus Interface


Grid HDA Package


(1k units)




12mm x 11mm x 5.3mm

$13.73 USD




12mm x 11mm x 5.3mm

$10.63 USD




12mm x 11mm x 5.3mm

$12.51 USD




12mm x 11mm x 5.3mm

$ 9.41 USD


Learn more, visit Renesas Electronics.

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