TECHNICAL DATASHEET

PMT Panel Mount Power Supply

12V 35W 1 Phase / PMT-12V35W1AX

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

www.DeltaPSU.com (February 2013, Rev. 01)

9

Overload & Overcurrent Protections

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

Protections will be activated when output current exceeds 120%

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

within the specifications.

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 >50°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.

Others

Delta RoHS Compliant

Restriction of the usage of hazardous substances

The European directive 2011/65/EU limits the maximum impurity level of homogeneous materials such as lead,

mercury, cadmium, chrome, polybrominated flame retardants PBB and PBDE for the use in electrical and

electronic equipment. RoHS is the abbreviation for “Restriction of the use of certain hazardous substances in

electrical and electronic equipment”.

This product conforms to this standard.