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ALQ07 DC-DC Converter Technical Reference Notes

DATE: Aug., 9, 2003

Minimum Load Requirements

Parameter

Device

Symbol

Typ

Unit

Minimum Load

All

Io1MIN

Io2MIN

0

0

A

A

Output Over-current Protection

For ALQ07 series DC/DC converters, when any output occurs over-current, all

outputs shut down after 100-300ms. The module can be restarted by resetting the

input power or CNT control.

Output Over-voltage Protection

The over-voltage protection has a separate feedback loop, which is activated when

the output voltage exceeds 120% to 150% of the nominal output voltage. The

module can be restarted by resetting the input power or CNT control.

Over Temperature Protection

ALQ07 DC/DC converters will shut down when the temperature of the board

reaches 101℃ to 115℃, and the module will automatically restart if the temperature

of the board is under 100℃.

Output Filters

When the load is sensitive to ripple and noise, an output filter can be added to

minimize the effects. A simple output filter to reduce output ripple and noise can be

220uF.