TECHNICAL DATASHEET

PMT Panel Mount Power Supply

24V 100W 1 Phase / PMT-24V100W1A

□□

All parameters are specified at 25°C ambient unless otherwise noted.

www.DeltaPSU.com (May 2013, Rev. 00)

10

Overload & Overcurrent Protections

The power supply’s Overload (OLP) and Overcurrent (OCP)

Protections will be activated when output current exceeds 110-

droop and once the power supply has reached its maximum

power limit, the protection is activated and the power supply will

go into “Hiccup mode” (Auto-Recovery). The power supply will

recover once the fault condition of the OLP and OCP is removed

period of time (depending on the load), the Over Temperature

Protection (OTP) will be activated due to high temperature on

critical components. The power supply will then go into “Hiccup

mode” until the fault is removed.

Overvoltage Protection

The power supply’s overvoltage circuit will be activated when its

internal feedback circuit fails. The output voltage shall not exceed

its specifications defined on Page 3 under “Protections”.

Over Temperature Protection

As

mentioned

above,

the

power

supply

also

has

Over

Temperature Protection (OTP). This is activated when the

overload condition persists for an extended duration and the

output current is below the overload trigger point but >100% load.

In the event of a higher operating condition at 100% load, the

power supply will run into OTP when the surrounding air

temperature is >70°C. When activated, the output voltage will go

into

bouncing

mode

until

the

operating

surrounding

air

temperature drops to 50°C or output capacity is reduced as

recommended in the de-rating graph.

Short Circuit Protection

The power supply’s output OLP/OCP function also provides

protection against short circuits. When a short circuit is applied,

the output current will operate in “Hiccup mode”, as shown in the

illustration in the OLP/OCP section on this page. The power

supply will return to normal operation after the short circuit is

removed.