Power Supply Application:
This custom made switched mode power supply is designed to supply the electronics of a coffee vending machine for the professional market. The application is characterized by very high power demands for only a short period of time. The onboard 5 volt auxiliary converter is used to feed the central processing unit (CPU) board of the machine.

Model Description:

The power supply is equipped with a passive power factor corrector (PFC) according EN 61000-3-2, class A.
The power supply unit has a built in continuous 5V / 4A auxiliary supply and a main converter remote on/off input.
The auxiliary converter can deliver up to 20W. The main converter can deliver up to twice its nominal 250W value and is provided with a fast acting high and a time delayed low trip level.

Protection:
The high level over-current protection limits the output to a constant value. A further increase of the output load will decrease the output voltage until the under-voltage trip level is reached without affecting the performance of the 5V auxiliary.

The low level time lag over-current protection circuitry latches off the power supply, when the output current exceeds the nominal level for a given time.

Product Inquiries

Power Supply Highlights:

• 190 – 264 Vac input voltage.
• High peak output power (500W) up to 10 seconds.
• 5V / 20W auxiliary converter on board.
• Passive PFC according EN 61000-3-2.
• Remote on/off for the main converter.
• Fully overload protected by a time delayed trip level.
• Under/over voltage protection
• Outputs are fully protected against overload and short circuit conditions
• Designed to cope with DC-motor start-up currents.
• Compact size and low weight.
• Safety, CE

Mechanical construction:

The regulated power supply has an open frame construction and is provided with two L-shaped heatsinks, which are screwed upon the metal mounting console of the machine. This construction increases the cooling capacity of the heatsink and it contributes to a lower weight and smaller size of the switched mode power supply.

Dimensions:

PCB: – 205 × 95 × 65 mm