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Digital Power Solutions

Complete Solutions For Isolated DC-DC Converters

The Si8250DK development kit includes a digitally-controlled, 35 W isolated half-bridge DC-DC converter. The Si825x resides on thesecondary side for fastest transient response and receives primary-side information from an inexpensive Silicon Labs MCU that communicatesthrough an Si8441 digital isolator. The result is a highly flexible, intelligent system that leverages digital control technology for optimumperformance at every point on line and load.

Primary-SidePower Stages,Drivers and PeakCurrent Sensing Secondary-SidePower Stages,Drivers andOutput Filter

IN

V

OUT

C8051F300

AIN0

Analog and digital secondary-side I/O

Si8441 Si8250

RxTx

Analogand digitalprimary-side I/O

I/OI/O Isolated AUX Supply V

Digital Power Controllers Quad Digital Isolators

Part Number FlashDPWM Outputs UARTComparatorTemperature Package Si8250 32 kB 6 Y Y –40 to 125 °C QFN28/LQFP32 Si8251 16 kB 6 Y Y –40 to 125 °C QFN28/LQFP32 Si8252 16 kB 3 N N –40 to 125 °C QFN28/LQFP32

Si8250 Development Kit Easy-to-Use Development Tools

• Digital half-bridge target board• Real-time application firmware • Intuitive digital controller design tools • PMBus IDEwith online debugger and SMPS application builder

TM

monitor• Serial debug adapter • Wall-mount power adapters (2)

Number of Inputs Number of Inputs Maximum Data Part Number Temperature PackageV
DD1 Side V
DD2 Side Rate Si8440 4 1, 10, 150 –40 to 125 °C SOIC–16 Si8441 3 1 1, 10, 150 –40 to 125 °C SOIC–16 Si8442 2 2 1, 10, 150 –40 to 125 °C SOIC–16

Note: All digital power packages are Pb -f free and RoHS compliant

Silicon Laboratories Inc. 4635 Boston Lane • Austin, TX 78735 Silicon Laboratories and the Silicon Laboratories logo are trademarks of SiliconLaboratoriesInc. All other product or service names are the property of their respective owners. Toll Free: (877)444-3032 Email: PowerInfo@silabs.com PG, 5000, Feb 06, Rev A Web site: www.silabs.com/DigitalPower