The Si825x Single-Phase POL Reference Design implements a digitally-controlled POL with a DPWM (digital pulsewidth modulation) switching frequency of 391 kHz. The Si8252 Single-Phase POL Target Board (Figure 1) containssystem power stages and digital control circuits with debug connectors for the Si8252 digital power controller. Theuser can also access and control the target board using SMBus.
The Si825x Single-Phase POL Reference Design comes with Application Builder software (detailed in "8. Si825xApplication Builder” on page 12), a configurable real-time software Kernel, and a software Kernel compiledspecifically for the Si8252 Single-Phase POL Target Board.
PMBus is a connectivity solution designed for networking multiple power supplies using a single management bus.The Real-time Kernel provided with the Si825x Single-Phase POL Reference Design includes optional support forPMBus. In addition, the Si825x POL design kit also comes with a PMBus Monitor application and USB to SMBusBridge Board to manage the power supply through PMBus.
