Digital Power Solutions - Silicon Laboratories - #1

• Single-chip, flash-based digital controller

• Dedicated DSP-based loop processor

• 50 MIPS flash system management processor

• Comprehensive, low-cost development kit

• 5x5 mm 28QFN and 32LQFP packages

• 125 °C maximum operating temperature

• High-speed operation: DC - 150 Mbps

• Low propagation delay: <10 ns

• Wide operating supply voltage: 2.375 - 5.5 V

• Low power: I1 + I2< 12mA/channel at 100 Mbps

• Precise timing

• 16-pin wide body SOIC

• Operating temperature: -40 to 125 °C at 100 Mbps -40 to 100 °C at 150 Mbps

• DC-DC, AC-DC converters

• PFC circuits

• Motor control systems

• Isolation

• UPS system

• Level shifting

• Ground loop elimination

• Isolated analog data acquisition

• Operator interface controls

• Plasma TVs

• Ethernet/CAN networks

• Isolated point-to-point communications

The Si825x family of programmable digital power controllers provides closed-loop feedback control, system protection and power management functions for switch mode power systems and motor control applications. The Si825x architecture combines a dedicated DSP-based control loop processor with an in-system programmable system management processor in a single package. This architecture guarantees the control loop is updated at 10 MHz, regardless of firmware size and complexity, for the fastest possible control response. Firmware can change all control parameters on the fly (loop gain, compensation, timing, etc.) enabling the system to quickly and intelligently adapt to changing operating conditions such as lead transients. A low-cost development kit, which includes a complete real-time firmware kernel and turnkey digital power supply target board with intuitive, easy-to-use design tools, is available.

The Si844x family of digital isolators are CMOS devices that employ an RF coupler to transmit digital information across an isolation barrier. Very high-speed operation at low power levels is achieved. These parts are available in a 16-pin wide body SOIC package. Three speed grade options (1, 10, 150 Mbps) are available over the full temperature range and achieve typical propagation delay of less than 10 ns.

7.5 mm

5 mm

5 mm

10.3 mm Quad Digital Isolator

SOLUTIONS GUIDE

O— ADC Isolator 5 V Logic

3 V Logic Isolator 5 V Logic