WR

Series(2.16)

2

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TYPICAL

CHARACTERISTICS

Temperature Derating Graph

TEMPERATURE

CHARACTERISTICS

Parameter

Conditions

Min.

Typ.

Max.

Units

Output voltage accuracy

Refer to recommended circuit

±1

±3

%

Over load protection

Input voltage range

120

130

150

%

Output Short Circuit

Input voltage range

Hiccup,automatics recovery

Load regulation

From 10% to 100% load

±0.5

±1

%

Trim

±10%Vo

VDC

Temperature drift (Vout)

0.02

%/℃

Line regulation

Input voltage from low to high

±0.2

±0.5

%

Ripple＆Noise

Tested under 20MHz brand

50

75

150

mV

Transient recovery time

25% load change

200

300

us

Transient peak deviation

±2

±3

±5

%

Over voltage protection

3.3V

3.63

4.29

VDC

5V

5.5

6.5

VDC

12V

13.2

15.6

VDC

15V

16.5

19.5

VDC

24V

26.4

31.2

VDC

Note:

1. All specifications are measured at TA=25°C, humidity<75%, nominal input voltage and rated output load

unless otherwise specified.

2. The CTRL control pin voltage is referenced to GND.

3. Typical efficiency value at nominal input voltage and full load.

4. Capacitor MAX load tested at nominal input voltage and constant resistive load.

5. Refer to the diagram of Output Voltage trim up/down for trim applications.

6. The products cannot be used in parallel and in plug and play.

Case material

DERATING

＆

EFFICIENCY

CURVE

Requirement on output load

In order to ensure the product operate efficiently and reliably,in addition to a

max load(namely full load), a minimum load is specified for this kind of

DC/DC converter.Make sure the specified range of input voltage is not

exceeded,the minimum output load no less than 10% load.If the actual

load is less than the specified minimum load, the output ripple may increase

sharply while its efficiency and reliability will reduce greatly.If the actual

output power is very small,please add an appropriate resistor as extra

loading,or contact our company for other lower output power products.

Curve of Efficiency VS input Voltage WRB2424YD-20W

No parallel connection or plug and play

RECOMMENDED

CIRCUIT

Output Graph

In order to obtain better performance for the DC/DC

models.it’s recommended that use input and output

filters as Fig.1 shown.

L:12uH

C:100uF/100V

OUTPUT

TRIM

Output Graph

Curve of Efficiency VS output load WRB2424YD-20W