9.2.2 Detailed Design Procedure

The Fusion Digital Power Designer software can be used to design the device configuration online or offline (with or without a UCD90320U device connected to the computer). In offline mode, the software prompts the user to create or open a project file (.xml) at launch. In online mode, the software automatically detects the device via the PMBus interface and extracts the configuration data from the device. A USB Interface Adapter EVM available from TI is required to connect Fusion Digital Power Designer software to PMBus.

The general design steps include. Details of the steps are described in the Detailed Description section, and are easily accessed within the Fusion Digital Power Designer software .

1. Rail setup
2. Rail monitoring configuration
3. GPI configuration
4. Rail sequence configuration
5. Fault response configuration
6. GPO configuration
7. Margining configuration
8. Other configurations including but not limited to
   • Pin Selected Rail States
   • Watchdog Timer
   • System Reset
   • Sync Clock
   • Fault Pins

Click Write to Hardware to apply the changes. In online mode, the then click Store RAM to Flash to permanently store the new configuration into the data flash of the device.