Description
The USB to SMBusTM Interface board allows communication between a Zilker Labs Digital-DC™ evaluation board and a PC. This interface board has been designed to bridge PMBus commands from a PC application program to the SMBus. The PMBus command set is used to configure a Digital-DC device as well as monitor the power supply. PMBusTM commands are accessed using the Zilker Labs interface software from a PC running Microsoft Windows. Refer to AN13 – PMBus Command Set for more information on PMBus commands.

Features
• SMBus control via USB
• SMBus 2.0 and I2C 2.1 compatible
• PMBus compliant
• Self powered from USB
• Pre-installed firmware
• Provides SMBus reference rail

Applications
This board has been designed to operate for the following conditions:
• Interface to Digital-DC EVBs
• fSMBus = 100 kHz
• Temperature range: 0°C to +70°C