WRA

WRA

WRA

WRA

WRA

WRA

WRA

YD-6W

YD-6W

YD-6W

YD-6W

YD-6W

YD-6W

＆

＆

＆

＆

＆

＆

WRB

WRB

WRB

WRB

WRB

WRB

YD

YD

YD

YD

YD

YD

-6W

-6W

-6W

-6W

-6W

-6W

Series

TYPICAL

TYPICAL

TYPICAL

TYPICAL

TYPICAL

TYPICAL

TYPICAL

CHARACTERISTICS

CHARACTERISTICS

CHARACTERISTICS

CHARACTERISTICS

CHARACTERISTICS

CHARACTERISTICS

CHARACTERISTICS

Temperature Derating Graph

RECOMMENDED

RECOMMENDED

RECOMMENDED

RECOMMENDED

RECOMMENDED

RECOMMENDED

RECOMMENDED

CIRCUIT

CIRCUIT

CIRCUIT

CIRCUIT

CIRCUIT

CIRCUIT

CIRCUIT

Output Graph

Output External Capacitor Table(Table 1)

Single Vout

Cout

Dual Vout

Cout

(VDC)

(μF)

(VDC)

(μF)

3.3

2200

±5

680

5

1000

±12

330

12

470

±15

220

15

330

--

--

Parameter

Conditions

Min.

Typ.

Max.

Units

Output power

See below products program

0.6

6

W

Positive voltage accuracy

Refer to recommended circuit

±1

±3

%

Negative voltage accuracy

Refer to recommended circuit

±3

±5

%

Load regulation

From 10% to 100% load

±0.5

±1*

%

Ripple **

20MHz Bandwidth

20

50

mVp-p

Temperature drift (Vout)

Refer to recommended circuit

±0.02

%/℃

Line regulation

Input voltage from low to high

±0.2

±0.5

%

Noise**

20MHz Bandwidth

50

100

mVp-p

Switching frequency

100% load, input voltage range

300

KHz

*

Dual output models unbalanced load: ±5%.

** Test ripple and noise by “parallel cable” method. See detailed operation instructions at Testing of Power Converter section,

application notes.

TEMPERATURE

TEMPERATURE

TEMPERATURE

TEMPERATURE

TEMPERATURE

TEMPERATURE

TEMPERATURE

TEMPERATURE

CHARACTERISTICS

CHARACTERISTICS

CHARACTERISTICS

CHARACTERISTICS

CHARACTERISTICS

CHARACTERISTICS

CHARACTERISTICS

CHARACTERISTICS

http://www.microdc.cn

Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646

page 2/3

APPLICATION

APPLICATION

APPLICATION

APPLICATION

APPLICATION

APPLICATION

APPLICATION

NOTE

NOTE

NOTE

NOTE

NOTE

NOTE

NOTE

Requirement

Requirement

Requirement

Requirement on

on

on

on output

output

output

output load

load

load

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

no

no

no less

less

less

less than

than

than

than 10%

10%

10%

10% load

load

load

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.

Recommended

Recommended

Recommended

Recommended Circuit

Circuit

Circuit

Circuit

All the WRA_YD-6W&WRB_YD-6W Series have been tested according to

the following recommended testing circuit before leaving factory.This series

should be tested under load(See figure 1).

If you want to further decrease the input/output ripple,you can increase

capacitance properly or choose capacitors with low ESR. However, the

capacitance of the output filter capacitor must be proper. If the capacitance

is too big, a startup problem might arise. For every channel of output,

provided the safe and reliable operation is ensured, the greatest capacitance

of its filter capacitor sees (Table 1).

General:

Cin: 5V＆12V 100μF

24V＆48V 100μF-47μF

Cout: 10μF/100mA

Input

Input

Input

Input current

current

current

current

While using unstable power source,please ensure the output voltage and

ripple voltage do not exceed indexes of the converter. Input current of

power supply should afford the startup current of this kind of DC/DC module

(See figure 2).

General:Ip≤1.4*Iin-max

No

No

No

No parallel

parallel

parallel

parallel connection

connection

connection

connection or

or

or

or plug

plug

plug

plug and

and

and

and play

play

play

play