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M

MINIMUM LOAD

The minimum load current required for a converter to operate within specification.

MTBF

Mean Time between Failure. The failure rate of a power supply, expressed in hours, established by the actual operation or calculation from a known standard such as MIL-HDBK-217F.

N

NOMINAL INPUT

The center value for the input voltage range.

NOMINAL VALUE

A usual, average, normal, or expected operating condition. This stated value will probably not be equal to the value actually measured.

O

OPERATING TEMPERATURE

The range of ambient or case temperatures within which a DC/DC converters can safely operate and meet its specifications.

OUTPUT VOLTAGE

The nominal value of the DC voltage at the output terminals of a power supply.

OUTPUT VOLTAGE ACCURACY

For a fixed output supply, the tolerance in percent of the output voltage with respect to its nominal value under all minimum or maximum conditions.

OVER VOLTAGE PROTECTION

A power supply protection feature which shuts down the supply, or crowbars or clamps the output, when its output voltage exceeds a preset level.

OVER TEMPERATURE PROTECTION

This is the case temperature above which the converter will shut down operation. Thermal shutdown halts the PWM operation placing the converter in a low current drain mode until the case temperature decreases.

Output Trim

Output voltage trimming allows the user to change the output voltage of the module. The output trim can be either a fixed resistor or a trimpot. Any value from zero ohms to infinity may be used to trim the output voltage when fixed resistors are used. A 10K, 1 or 10 Turn trimpot is usually specified for continuous trimming. This pin may be safely left floating if it is not used.

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