Delta Products DRP024V060W1BA Product Information Sheet

Switch Mode Power Supply DRP024V060W1BA

 Overload Protection

The Power Supply is provided with an overload protection (OLP) function which protects the power
supply from possible damage caused by excess current. The Power Supply also has an over
temperature protection (OTP) in case overload condition persists for an extended duration and is
below the overload trigger point but > 100% load.

Typically the overload current (IOL) is > I
power supply reaches max power limit. It will go into bouncing mode when the output reaches UVLO
(under voltage point). The output voltage will recover automatically when the overload condition is
removed.

(150%) output voltage will start dropping when the

SURGE

 Short Circuit Protection

The Power Supply has a short circuit protection which is in line with the overload protection and
activates whenever there is a short across the output voltage. It will go into bouncing mode and
recovers automatically when the fault is removed.

 Over Temperature Protection

The Power Supply has an 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 ambient operating condition at 100% load, the Power Supply will run into
OTP when the ambient temperature is > 55°C. When activated, the output voltage will go into
bouncing mode until the operating ambient temperature drops to 50°C or output capacity is reduced
as recommended in the graph.

8/13 Rev: 00,
1/10/2011

Switch Mode Power Supply DRP024V060W1BA

 Overvoltage protection

The Power Supply has an overvoltage protection (OVP) and is activated when the power supply
feedback circuit fails. The output voltage will not be > 35V under any Line/Load and operating
ambient temperature.

The Power Supply does not shut down but goes into Hiccup mode (Auto-Recovery). The output
voltage will recover back to 24VDC once the fault is removed.

 Inrush Current, Start-up Time, Output Hold-up Time

Inrush Current,

Inrush current is the first surge current seen on the input side when AC input is applied to the Power
Supply. It is the first pulse captured. See below for the Inrush current in a typical Power Supply.

Start-up Time,

Start-up time is measured from the point AC input is applied to the point output voltage reaches
within 90% of its set value. See below for a typical start-up time characteristic.

Rise Time,

Rise time is measured from the point output voltage rises from 10% to 90% of its set value. See
below for a typical rise time measurement.

9/13 Rev: 00,
1/10/2011