DESCRIPTION

· The Si8250/1/2 is a digital power controller designed for intelligent, fast-response power delivery and management in both isolated and non-isolated power supplies.
· It features onboard processing for control optimization, enabling enhanced system performance and capabilities like serial connectivity via SMBus or UART.
· The controller is in-system Flash programmable, allowing for easy modification of control and protection parameters.
· It includes a high-speed control path for rapid loop updates and pulse-by-pulse current limiting, even with the CPU disabled.

FEATURES

· Single-chip, Flash-based digital power controller suitable for isolated and non-isolated applications.
· Enables advanced system capabilities such as adaptive dead-time control, nonlinear control for faster transient response, and self-diagnostics.
· Highly-integrated solution with a high-speed digital hardware control loop and programmable system protection functions.
· Includes hardware cycle-by-cycle current limiting and overcurrent protection.
· Supports external clock and frame synchronization inputs.
· Performs system management functions like power supply sequencing and fan control/monitoring.
· In-system Flash programmable with NV memory capability for data storage.
· Comes with a low-cost, comprehensive development tool kit including graphical design tools, an integrated development environment, and an in-system debugger.

APPLICATIONS

· Suitable for both isolated and non-isolated DC/DC converters.
· Applicable in AC/DC converters.
· Fully Pb-free and ROHS compliant, available in 32-pin LQFP and 28-pin 5x5 mm QFN packages.
· Operates in a temperature range of –40 to +125 °C.