Describes how to power the core and I/O of low voltage FPGAs using the latest step-down switch mode controllers from Linear Technology Corporation
The document discusses how to power the core and I/O of low voltage FPGAs using step-down switch mode controllers from Linear Technology Corporation. It addresses load requirements ranging from less than 2A to over 10A for systems with multiple FPGAs, utilizing various input voltages such as 5V or 12V.
| Core Voltage (Stratix II) | 1.2V |
|---|---|
| Core Voltage (Stratix GX/Cyclone) | 1.5V |
| Full Load Efficiency Range | >78% to mid 80% |
| Switching Frequency Range | 200kHz to over 1MHz |
It is recommended to use Altera's PowerPlay Power Estimation Tools to obtain accurate results.
The newest FPGA family from Altera, the Stratix ® II, now requires a core voltage of 1.2V.
The advantage is efficiency compared to nonsynchronous or linear mode regulators.