What is Maximum Load?

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Maximum Load: Highest amount of output load allowable under the continuous operating specifications of a converter.

OTP: Over Temperature Protection: A protection system for converters where the converter shuts down if the ambient temperature exceeds the converters ratings. OTP is intended to save the converter and any downstream equipment in the event of a catastrophic failure of a fan or such. OTP usually measures the hottest item on board the converter rather than ambient temperature.
Open Frame: A type of power supply which is not encased in a metal or plastic shell or frame and subsequently is not covered with a potting compound. Open Frame converters are easily identified as their component parts are visible.
Open-Circuit Voltage: See No Load Voltage
Operating Temperature Range: Range of temperatures over which a converter can be operated safely within specified limits. Normally specified as ambient, however, at times case or base plate temperature are also used.
See Case Temperature, Storage Temperature Range
Output Current Limiting: An output protection feature which limits the output current to a predetermined value in order to prevent damage to power supply or the load under overload conditions. The supply is automatically restored to normal operation following removal of the over load.
Output Impedence of a power supply: At any given frequency of load change, EOUT /1OUT. Strictly speaking the definition applies only for a sinusoidal load disturbance, unless, of course, the measurement is made at zero frequency (DC). The output impedance of an ideal constant voltage power supply would be zero at all frequencies, while the output impedance for an ideal constant current power supply would be infinite at all frequencies.
Output Voltage: Value of DC voltage measured at the output terminal of a converter.
Output Voltage Accuracy: Maximum allowable deviation of the DC output of a converter from its ideal or nominal value. Expressed as a percentage of output value. Often called output voltage tolerance.
Output Voltage Range: Minimum and maximum output voltage limits within which a converter meets its operating specifications.
Overload Protection: An output protection feature which limits the output current of a power supply under overload conditions so that it will not be damaged.
Overshoot: Transient change in output voltage that exceeds specified accuracy limits. Typically occurs on converter turn on/off or with a step change in output load or input line.
Overvoltage Protection (OVP): Output monitoring circuit activated if a preset voltage level is exceeded. Depending on the type of circuit used, the OVP shuts the converter down, “crowbars” the faulty output or switches the converter to a different operating mode.

Glossary of power supply terms