Drain pump driving apparatus and laundry treatment machine including the same

A drain pump driving apparatus comprising:

• a converter to convert alternating current (AC) voltage into direct current (DC) voltage;
• a voltage dropper to drop the DC voltage from the converter;
• an inverter module to operate based on a first voltage from the voltage dropper and to output AC voltage converted by a switching operation to a drain pump motor;
• and
• a controller to operate based on the first voltage from the voltage dropper and to control the inverter module.

A laundry treatment machine comprising:

• a washing tub;
• a driver to drive the washing tub;
• a drain pump;
• and
• a drain pump driving apparatus to drive the drain pump,
• wherein the drain pump driving apparatus comprises:
• a converter to convert alternating current (AC) voltage into direct current (DC) voltage;
• a voltage dropper to drop the DC voltage from the converter;
• an inverter module to operate based on a first voltage from the voltage dropper and to output AC voltage converted by a switching operation to a drain pump motor;
• a controller to operate based on a second voltage from the voltage dropper and to control the inverter module;
• and
• a voltage adjuster to adjust the level of voltage information of the motor outputted from the inverter module and to output the adjusted voltage information to the controller.