Cosel DHS50A, DHS50B, DHS100A, DHS100B, DHS250B Instruction Manual

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of our knowledge, accurate. However, we assume no liability for any product failures or
damages, immediate or consequential, resulting from the use of the information provided
herein. Our products are not intended for use in systems in which failures of product could
result in personal injury. All trademarks mentioned herein are property of their respective
owners. All specifications are subject to change without notice.

Instruction Manual

DHS-Series

Cosel

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DHS-14

Basic Characteristics Data

*1 Refer to Specification.
*2 Refer to Instruction Manual.

Basic Characteristics Data

Model Circuit method

Switching
frequency

[kHz]

Input

current

[A]

Rated

input fuse

PCB/Pattern

Series/Parallel

operation availability

Material

Single

sided

Double

sided

Series

operation

Parallel

operation

DHS50A
DHS50B

Forward converter 470

*1

- Aluminum Yes Yes

*2

DHS100A
DHS100B

Forward converter 470

*1

- Aluminum Yes Yes

*2

DHS200A
DHS250B

Forward converter 360

*1

- Aluminum Yes Yes

*2

DHS

1 Pin Connection

DHS-16

2 Connection for Standard Use

DHS-16

6.1 Mounting method

6.2 Stress onto the pins

6.3 Cleaning

6.4 Soldering temperature

6.5 Derating

6.6 Heat sink(Optional parts)

DHS-20

DHS-21

DHS-21

DHS-21

DHS-21

DHS-22

4.1 Overcurrent protection

4.2 Overvoltage protection

4.3 Thermal protection

4.4 Remote ON/OFF

4.5 Remote sensing

4.6 Adjustable voltage range

4.7 Withstanding Voltage / Isolation Voltage

5 Series and Parallel Operation

DHS-20

5.1 Series operation

5.2 Redundancy operation

6 Implementation-Mounting Method

DHS-20

DHS-18

DHS-18

DHS-18

DHS-18

DHS-18

DHS-19

DHS-20

DHS-20

DHS-20

3 Wiring Input/Output Pin

DHS-16

3.1 Wiring input pin

3.2 Wiring output pin

DHS-16

DHS-17

4 Function

DHS-18

7

Lifetime expectancy depends on
stress by temperature difference

DHS-23

DC-DC Converters Bus Converter

.

Power Module Type

DHS-15

DHS

Instruction Manual

1 Pin Connection

3.1 Wiring input pin

(1) External fuse

¡

Fuse is not built-in on input side. In order to protect the unit, install

the normal blow type fuse on input side.

¡

When the input voltage from a front end unit is supplied to multiple

units, install the normal blow type fuse in each unit.

2 Connection for

Standard Use

¡

In order to use the power supply, it is necessary to wire as shown

in Fig.2.1 and external components in table2.1.

¡

Short the following pins to turn on the power module.

-VIN

RC, +VOUT +S, and -VOUT -S (DHS200/250)

Reference: 4.4 ”Remote ON/OFF”

4.5 ”Remote sensing”

¡

The DHS Series handles only the DC input.

Avoid applying AC input directly.

It will damage the power supply.

¡

Operate with the conduction cooling(e.g. heat radiation from the

aluminum base plate to the attached heat sink).

Reference: 6.5 ”Derating”

3

Wiring Input/Output Pin

¿

DHS50/100

¿

DHS200/250

Model DHS50A/DHS100A DHS200A

Rated current 3.15A 5A

Model DHS50B/DHS100B DHS250B

Rated current 1.6A 3.15A

No.

Symbol

component Reference
1 F1 Input fuse 3.1 (1) ”External fuse”
2C

Y

Primary decoupling capacitor

3.1 (2) ”Noise fi lter/

Decoupling capacitor”

3 - Noise fi lter
4 Cin

External capacitor on the input side 3.1 (3) ”External capacitor on the input side”

5Co

External capacitor on the output side

3.2 ”Wiring output pin”

6 - Heatsink

6.5 ”Derating”

DC-DC Converters Bus Converter

.

Power Module Type

Instruction Manual

DHS-16

DHS

Table 1.1 Pin Connection and function

Fig.2.1 Connection for Standard Use

Table 3.1 Recommended fuses (Normal-blow type)

Fig.1.1 Pin Connection (bottom view)

2-FG

4 +VOUT

-VOUT6

5 TRM

-VIN

3

RC 2

+VIN 1

4-FG

5

+VOUT

-VOUT8

-S

7

TRM

6

+S

4

-VIN

3

RC 2

+VIN 1

+S, -S : DHS200/250

No.

DHS200/250

DHS50/100

Pin Connection Function

+VIN +DC input
RC Remote ON/OFF

-VIN -DC input
+VOUT +DC output
+S +Remote sensing
TRM Adjustment of output voltage

-S -Remote sensing

-VOUT -DC output
Mounting hole Mounting hole

1
2
3
4
5
6
7
8

1
2
3
4

5

6

No.

DHS200/250

DHS50/100

Pin Connection Reference

+VIN
RC

-VIN
+VOUT
+S
TRM

-S

-VOUT
Mounting hole 6.1 "Mounting hole"

1
2
3
4
5
6
7
8

1
2
3
4

5

6

3.1 Wiring input pin

4.4 Remote ON/OFF

3.1 Wiring input pin

3.2 Wiring output pin

4.5 Remote sensing

4.6 Adjustable voltage range

4.5 Remote sensing

3.2 Wiring output pin

+

Heatsink

o

C

Cin

FG

RC

-S

+VOUT

-VOUT

-VIN

+VIN

+S

Y

C

Load

F1

DC

input

Noise

filter

Table 2.1 External components