Silicon Labs SI8251-IM

Description
The Si8250/1/2 is a single-chip, Flash-based digital power controller that supports both isolated and non-isolated applications. It enables new system capabilities such as adaptive dead-time control for higher efficiency, nonlinear control for faster transient response, self-diagnostics for higher reliability, and an SMBus port.
The Si8250/1/2 is a highly integrated control solution that includes a high-speed digital hardware control loop and an in-system programmable supervisory processor. It also has programmable system protection functions and in-system Flash programmability. The Flash can also be used as NV memory for data storage.

Features
Single-chip, Flash-based digital power controller
Supports isolated and non-isolated applications
Enables new system capabilities such as:
Adaptive dead-time control for higher efficiency
Nonlinear control for faster transient response
Self-diagnostics for higher reliability
SMBus port
Highly integrated control solution:
High-speed digital hardware control loop
In-system programmable supervisory processor
Programmable system protection functions
In-system Flash programmable
Flash can also be used as NV memory for data storage
Low-cost, comprehensive development tool kit includes:
Graphical, easy-to-use system design tools
Integrated development environment
In-system, on-line debugger
Turnkey isolated 35 W digital half-bridge target board

Applications
Isolated and non-isolated DC/DC converters
AC/DC converters
Fully Pb-free and ROHS compliant packages
32-pin LQFP
28-pin 5x5 mm QFN
Hardware cycle-by-cycle current limiting and OCP
External clock and frame synchronization inputs
Performs system management functions, such as external power supply sequencing and fan control/monitoring