Overview
The document provides detailed information on the Si825x family of programmable digital power controllers and the Si844x family of digital isolators, both designed for high-performance power management and isolation in various applications.

Digital Power Controllers
The Si825x series offers closed-loop feedback control, system protection, and power management for switch mode power systems and motor control applications. Key features include:

• Single-chip, flash-based digital controller with a DSP-based loop processor.
• 50 MIPS flash system management processor.
• Real-time firmware kernel and turnkey digital power supply target board.
• Operating temperature up to 125 °C.

These controllers are available in 5x5 mm 28QFN and 32LQFP packages.

Quad Digital Isolators
The Si844x family uses an RF coupler for digital information transmission across isolation barriers, achieving high-speed operation at low power levels. Features include:

• Speed grades of 1, 10, and 150 Mbps with propagation delay under 10 ns.
• Wide operating supply voltage range (2.375 – 5.5 V).
• Low power consumption and precise timing.
• Available in a 16-pin wide body SOIC package.

Operating temperatures range from -40 to 125 °C at 100 Mbps and -40 to 100 °C at 150 Mbps.

Applications
The products are suitable for a variety of applications, including:

• DC-DC and AC-DC converters.
• Power factor correction (PFC) circuits.
• Motor control systems and UPS systems.
• Isolation and level shifting.
• Isolated analog data acquisition and operator interface controls.
• Plasma TVs, Ethernet/CAN networks, and isolated point-to-point communications.

Development Tools
The Si8250DK development kit includes a digitally-controlled, 35 W isolated half-bridge DC-DC converter, providing a flexible and intelligent system for optimal performance. The kit features:

• Digital half-bridge target board and real-time application firmware.
• Intuitive digital controller design tools and PMBusTM monitor.
• Serial debug adapter and wall-mount power adapters.

Conclusion
Silicon Laboratories offers comprehensive solutions for digital power management and isolation, with products that are Pb-free and RoHS compliant, ensuring high performance and integration in various technological applications.