Power Boost (also known as Peak Power) is a built-in reserve power capability that allows a power supply to handle short-duration peak loads, such as high inrush current during system startup. This helps avoid oversizing the power supply for brief surge conditions.
After reaching steady-state operation, the power supply can temporarily deliver higher-than-rated output power for a limited duration to support dynamic load demands.
However, Power Boost performance varies by model. Key parameters include:
- Maximum boost output level (e.g., percentage above rated current)
- Boost duration
- Recovery time before the next boost cycle
If the Power Boost duration or load exceeds the specified limits:
- The power supply will enter current limiting mode
- The output voltage (VO) may decrease (voltage droop)
- Overload and overcurrent protection functions may be activated
To ensure reliable operation:
- Follow the specified duty cycle and recovery time
- Ensure the average (RMS) output power remains within the continuous rated power of the unit
*Always refer to the product-specific datasheet for exact Power Boost values and performance characteristics.
Looking for products that support Power Boost? See our guide: Which of Our Power Supplies Have Power Boost?