AMBIENT TEMPERATURE ( )

℃

INPUT VOLTAGE (V) 60Hz

90

100

125

135

145

155

165

175

180

200

230

264

100

90

80

70

60

50

40

175

230VAC

Input only

20

40

60

80

100

(VERTICAL)

-20

0

15

30

040

50 55

-30

60

70

CIRCUIT

DETECTION

O.L.P.

EMI

FILTER

RECTIFIERS

&

FILTER

POWER

SWITCHING

FILTER

&

RECTIFIERS

+V

-V

DIM+

DIM-

I/P

CONTROL

O.V.P.

O.C.P.

FG

OUTPUT CURRENT ADJUSTMENT OPERATION

※ Reference resistance value for output current adjustment (Typical)

※ Built-in 3 in 1 current adjustment function . Output constant current level can be adjusted by applying 1 ~ 10Vdc, 10V PWM

※ Please DO NOT connect "DIM-" to "-V".

60K

Ω

60%

60%

10K

Ω

10K

/N

Ω 20K /N

Ω 30K /N

Ω 40K /N

Ω 50K /N

Ω 60K /N

Ω 70K /N

Ω 80K /N

Ω 90K /N

Ω 100K /N

Ω

Single Power supply

Multiple Power supplies

(N=Power supply quantity for simultaneous

current adjustment control)

1V

4V

7V

2V

5V

8V

3V

6V

9V

10V

10%

10%

20K

Ω

20%

20%

30K

Ω

30%

30%

40K

Ω

40%

40%

50K

Ω

50%

50%

70K

Ω

70%

70%

80K

Ω

80%

80%

90K

Ω 100KΩ

OPEN

OPEN

OPEN

90%

90%

100%

100%

Resistance

value

Applied Source

Percentage of rated current

Percentage of rated current

※ 1 ~ 10Vdc for output current adjustment (Typical)

60%

60%

10%

10%

20%

20%

30%

30%

40%

40%

50%

50%

70%

70%

80%

80%

90%

90%

100%

100%

Duty value

Percentage of rated current

102%~108%

-----

102%~108%

102%~108%

※ 10V PWM signal for output current adjustment (Typical): Frequency range :100Hz ~ 3KHz

40W Single Output Switching Power Supply

File Name:DRA-40-SPEC 2015-06-11

Derating Curve

Static Characteristics

Block Diagram