Marking the company's initial foray into the power market, the Si825x is heralded as the most advanced digital power supply controller available. The family employs a patented architecture that provides the programmability of a DSP with the quick response of a hardware-based controller. This architecture allows the devices to deliver both digital power control and power-management functions for most isolated and non-isolated switch-mode supplies. The family employs processing hardware for real-time loop control and a flash-based system management controller. The control loop updates at a 10-MHz rate and includes an a/d converter, programmable DSP filter, six-channel DPWM, and a programmable over-current protection hardware detector. The management controller performs fault detection/recovery, control-loop optimization, PMBus communication, and external-device management. It integrates a 50 MIPS 8051 CPU with 32 KB of flash memory, 12-bit, self-sequencing a/d converter, SMBus/PMBus port, UART, 16-bit timers, and additional PWM channels. Sampling now with production slated for the third quarter, the Si825x family is available in 5 mm x 5 mm, 28-pin QFNs or 32-pin LQFPs. Pricing starts at $2.49 each/1,000. SILICON LABORATORIES, Campbell, CA. (408) 376-5070.
Company: SILICON LABORATORIES
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