RSD-300C-12 Datasheet RSD-300F-48, RSD-300D-48, RSD-300C-12 | P4-P6

300W Railway Single Output DC-DC Converter

RSD-300 series

File Name:RSD-300-SPEC 2018-01-15

Input Terminal Pin No. Assignment :

Output Terminal Pin No. Assignment :

(For 12V, 24V, 48V) (For 5V)

Pin No.

Pin No. Pin No.

1

1,2

2

2 3,4

3

Assignment

Assignment Assignment

DC INPUT V+

DC OUTPUT -V DC OUTPUT -V

DC INPUT V-

DC OUTPUT +V DC OUTPUT +V

81

7.75

96.5

2-R2.1

13

28

40

10

O/P

I/P

1

2

3

4-R2.1

4

208

216

1

2

LED

4

208

15max.

Input Fuse

There are one or two fuses connected in series to the positive input line, which are used to protect against abnormal surge. Fuse specifications of each model are shown

as below.

Type

B

C

E

D

F

Fuse Type

Fast

Time-Lag

Reference and Rating

Littelfuse 257, 30A, 32V

Conquer UDA-A, 16A, 250V

Conquer UDA-A, 20A, 250V

Conquer UDA-A, 8A, 250V

Conquer UDA-A, 10A, 250V

Mechanical Specification

Case No.205 Unit:mm

fosc : 130KHz

Block Diagram

CIRCUIT

DETECTION

O.V.P.

EMI

FILTER

POWER

SWITCHING

FILTER

&

RECTIFIERS

+V

-V

I/P

FG

CONTROL

PWM

FG

O.L.P.

O.T.P.

1

2

3

4

Input Reverse Polarity Protection

Input Range and Transient Ability

Input Under-Voltage Protection

Inrush Current

There is a MOSFET connected in series to the negative input line. If the input polarity is connected reversely, the MOSFET opens and there will be no output to protect

the unit.

The series has a wide range input capability. Within 30% of rated input voltage, it can be executed at full-load operation and operate properly; with 40% of rated input± ±

voltage, it can withstand that for 1 second.

If input voltage drops below Vimin, the internal control IC shuts down and there is no output voltage. It recovers automatically when input voltage reaches above Vimin,

please refer to the cruve below.

Inrush current is suppressed by a resistor during the initial start-up, and then the resistor is bypassed by a MOSFET to reduce power consumption after accomplishing

the start-up.

TIME

LOAD

300W Railway Single Output DC-DC Converter

RSD-300 series

File Name:RSD-300-SPEC 2018-01-15

Hold-up Time

D and F and E-5 types are in compliance with S2 level, while B and C and E types are in compliance with S1 level at full load output condition.

To fulfil the requirements of S2 level, B and C and E types require de-rating their output load to 70%, please refer to the curve diagrams below.

RSD-300B-24

RSD-300E-24

RSD-300B-48

RSD-300B-12

RSD-300C-24

RSD-300F-24

RSD-300C-5

RSD-300B-24

RSD-300D-24

RSD-300C-12

100%

LOAD

RSD-300B-5

20.9

18.6

0

5

10

15

20

25

30

17 19 21 23 25 27 29

Tur n On

Tur n Off

Vo

Vin

13.5

12

0

5

10

15

20

25

30

11 12 13 14 15 16 17

Tur n On

Tur n Off

25.824.2

30

0

5

10

15

20

25

30

23 25 27 29 31 33 35

Tur n On

Tur n Off

56.2

53.5

0

5

10

15

20

25

30

50 55 60 65 70

Tur n On

Tur n Off

41.8

39.1

0

5

10

15

20

25

30

37 39 41 43 45 47 49

Tur n On

Tur n Off

Vin

Vin VinVin

Vo

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0ms 10ms 20ms 30ms 40ms 50m s 60ms 70m s 80ms

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0m s 10m s 20ms 30m s 40m s 50m s 60m s 70m s 80m s

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0ms 10ms 20ms 30ms 40m s 50ms 60ms 70ms 80ms 90ms

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0ms 10ms 20m s 30ms 40m s 50ms 60ms 70m s 80m s

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0ms 10ms 20ms 30ms 40ms 50m s 60ms 70m s 80ms

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0ms 10ms 20ms 30ms 40ms 50ms 60ms 70ms 80ms 90ms

300W Railway Single Output DC-DC Converter

RSD-300 series

File Name:RSD-300-SPEC 2018-01-15

70%

75%

80%

85%

90%

95%

10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

31.2Vdc

24Vdc

16.8Vdc

Output Voltage Adjustment

This function is optional, which the standard product does not have it. If you do need the function, please contact MW for details.

TIME

LOAD

RSD-300C-24

RSD-300E-24

RSD-300C-48

RSD-300E-48

RSD-300E-12

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0m s 10m s 20m s 30m s 40m s 50m s 60m s 70m s 80m s

LOAD

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0m s 10m s 20m s 30m s 40m s 50m s 60m s 70m s 80ms

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0ms 10ms 20ms 30ms 40ms 50ms 60ms 70ms 80m s 90m s

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0ms 10ms 20ms 30m s 40ms 50ms 60ms 70ms 80m s 90m s

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0ms 10ms 20ms 30ms 40ms 50ms 60ms 70m s 80ms 90ms

RSD-300B-5

RSD-300B-48

RSD-300C-24

RSD-300D-12

RSD-300B-12

RSD-300C-5

RSD-300C-48

RSD-300D-24

RSD-300B-24

RSD-300C-12

RSD-300D-5

RSD-300D-48

EFFICIENCY

LOAD

Efficiency vs Load & Vin Curve

The efficiency vs load & Vin curves of each model are shown as below.

70%

75%

80%

85%

90%

95%

10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

31.2Vdc

24Vdc

16.8Vdc

LOAD

70%

75%

80%

85%

90%

95%

10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

31.2Vdc

24Vdc

16.8Vdc

LOAD

70%

75%

80%

85%

90%

95%

10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

31.2Vdc

24Vdc

16.8Vdc

EFFICIENCY

70%

75%

80%

85%

90%

95%

10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

62.4Vdc

48Vdc

33.6Vdc

70%

75%

80%

85%

90%

95%

10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

62.4Vdc

48Vdc

33.6Vdc

70%

75%

80%

85%

90%

95%

10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

62.4Vdc

48Vdc

33.6Vdc

70%

75%

80%

85%

90%

95%

10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

143Vdc

110Vdc

67.2Vdc

70%

75%

80%

85%

90%

95%

10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

143Vdc

110Vdc

67.2Vdc

70%

75%

80%

85%

90%

95%

10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

143Vdc

110Vdc

67.2Vdc

70%

75%

80%

85%

90%

95%

10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

143Vdc

110Vdc

67.2Vdc

70%

75%

80%

85%

90%

95%

10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

62.4Vdc

48Vdc

33.6Vdc

RSD-300C-12

RSD-300C-12

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