Puls CD10.482 Data Sheet

CD10.482

CD-Series

DC/DC Converter 48V/48V, 5A, 240W

1/26

DC/DC CONVERTER

▪ 48V DC-Input
▪ Isolated 48Vdc Output
▪ Efficiency 95.1%
▪ Width only 42mm
▪ 20% Output Power Reserves
▪ Full Power Between -25°C and +60°C
▪ Soft-start Function
▪ Minimal Inrush Current Surge
▪ Reverse Input Polarity Protection
▪ 3 Year Warranty

PRODUCT DESCRIPTION

The CD10.482 is a DIN-rail mountable DC/DC converter of the

SHORT-FORM DATA

Output voltage

DC 48V

Nominal

Adjustment range

48 - 56V

Factory setting 48.0V

Output current

6 – 5.2A

Below +45°C ambient

5 – 4.3A

At +60°C ambient

3.8 – 3.2A

At +70°C ambient

Derate between +60°C and +70°C

Input voltage

DC 48V

±25%

Input current

5.3A

Input inrush current

7A peak

Efficiency

95.1%

Losses

12.4W

Hold-up time

7.7ms

Temperature range

-25°C to +70°C

Size (W x H x D)

42x124x117mm

Without DIN-rail

Weight

500g / 1.1lb

ORDER NUMBERS

MAIN APPROVALS

Ind. Cont. Eq.

planned

DIMENSION series which provides a floating, stabilized and
galvanically separated SELV/PELV output voltage.

The CD-Series is part of the DIMENSION power supply family.
The most outstanding features of CD10.482 are the high
efficiency, the small size and the wide operational temperature
range.

The CD-Series includes all the essential basic functions. The
devices have a power reserve of 20% included, which may even
be used continuously at temperatures up to +45°C.

High immunity to transients and power surges as well as low
electromagnetic emission and a large international approval
package for a variety of applications makes this unit suitable for
nearly every situation.

DC/DC Converter

Mechanical Accessory

Jun 2020 / Rev. 1.0 DS-CD10.482-EN All values are typical figures specified at 48Vdc input voltage 48V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.

For details or a complete approval list see section 18.

CD10.482

ZM2.WALL Wall/panel mount bracket
ZM12.SIDE Side mount bracket

CD10.482

CD-Series

DC/DC Converter 48V/48V, 5A, 240W

2/26

INDEX

Page Page

TERMINOLOGY AND ABREVIATIONS

1. Intended Use ................................................................ 3

2. Installation Instructions ................................................ 3

3. DC-Input ....................................................................... 4

4. Input Inrush Current ..................................................... 6

5. Soft-start Feature ......................................................... 6

6. Output .......................................................................... 7

7. Hold-up Time ................................................................ 8

8. Efficiency and Power Losses ......................................... 9

9. Functional Diagram .................................................... 10

10. Front Side and User Elements .................................... 10

11. Connection Terminals ................................................ 11

12. Lifetime Expectancy ................................................... 12

13. MTBF .......................................................................... 12

14. EMC ............................................................................ 13

15. Environment ............................................................... 14

16. Safety and Protection Features .................................. 15

17. Dielectric Strength ...................................................... 15

18. Approvals ................................................................... 16

The information given in this document is correct to the best of our knowledge and experience at the time of publication. If not
expressly agreed otherwise, this information does not represent a warranty in the legal sense of the word. As the state of our
knowledge and experience is constantly changing, the information in this data sheet is subject to revision. We therefore kindly ask you
to always use the latest issue of this document (available under www.pulspower.com).

No part of this document may be reproduced or utilized in any form without our prior permission in writing.

19. Other Fulfilled Standards ........................................... 16

20. Physical Dimensions and Weight ............................... 17

21. Accessories................................................................. 18

21.1. ZM2.WALL – Wall/Panel Mount Bracket .......... 18

21.2. ZM12.SIDE - Side Mount Bracket ..................... 19

21.3. YRM2.DIODE - Redundancy Module ................ 20

21.4. UF20.481 - Buffer Module ................................ 20

22. Application Notes....................................................... 21

22.1. Peak Current Capability .................................... 21

22.2. Output Circuit Breakers .................................... 22

22.3. Charging of Batteries ........................................ 22

22.4. Series Operation ............................................... 23

22.5. Parallel Use to Increase Output Power ............ 23

22.6. Parallel Use for Redundancy ............................ 24

22.7. Use in a Tightly Sealed Enclosure ..................... 25

22.8. Mounting Orientations ..................................... 26

PE and symbol PE is the abbreviation for Protective Earth and has the same meaning as the symbol .
Earth, Ground This document uses the term “earth” which is the same as the U.S. term “ground”.
T.b.d. To be defined, value or description will follow later.
DC 48V A figure displayed with the AC or DC before the value represents a nominal voltage with standard tolerances

included.
E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V)

48Vdc A figure with the unit (Vac) at the end is a momentary figure without any additional tolerances included.
may A key word indicating flexibility of choice with no implied preference.
shall A key word indicating a mandatory requirement.
should A key word indicating flexibility of choice with a strongly preferred implementation.

Jun 2020 / Rev. 1.0 DS-CD10.482-EN All values are typical figures specified at 48Vdc input voltage 48V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.

CD10.482

CD-Series

DC/DC Converter 48V/48V, 5A, 240W

3/26

1. INTENDED USE

This device is designed for installation in an enclosure and is intended for commercial use, such as in industrial control, process control,

2. INSTALLATION INSTRUCTIONS

WARNING

monitoring and measurement equipment or the like.
Do not use this device in equipment where malfunction may cause severe personal injury or threaten human life.

Risk of electrical shock, fire, personal injury or death.

- Turn power off before working on the device. Protect against inadvertent re-powering.

- Do not modify or repair the unit.

- Do not open the unit as high voltages may present inside.

- Use caution to prevent any foreign objects from entering the housing.

- Do not use in wet locations or in areas where moisture or condensation can be expected.

- Do not touch during power-on, and immediately after power-off. Hot surface may cause burns.

Obey the following installation requirements:

Install device in an enclosure providing protection against electrical, mechanical and fire hazards.
Install the device onto a DIN-rail according to EN 60715 with the input terminals on the bottom of the device. Other mounting
orientations require a reduction in output current.
Make sure that the wiring is correct by following all local and national codes. Use appropriate copper cables that are designed for a
minimum operating temperature of 60°C for ambient temperatures up to +45°C, 75°C for ambient temperatures up to +60°C and 90°C
for ambient temperatures up to +70°C.
Ensure that all strands of a stranded wire enter the terminal connection. Unused screw terminals should be securely tightened.
The device is designed for pollution degree 2 areas in controlled environments. No condensation or frost is allowed.
The enclosure of the device provides a degree of protection of IP20. The enclosure does not provide protection against spilled liquids.
The input can be powered from batteries or similar DC sources. The voltage between the input terminals and ground must not exceed
60Vdc continuously.
The input must be powered from a PELV or SELV source or an "Isolated Secondary Circuit" in order to maintain a SELV or PELV output.
Check for correct input polarity. The device will not operate when the voltage is reversed.
A disconnecting means shall be provided for the input of the device.
The device is designed as “Class of Protection I” equipment according to IEC 61140. Do not use without a proper PE (Protective Earth)
connection.
The device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do not cover ventilation
grid!
The device is designed for altitudes up to 5000m (16400ft). See additional requirements in the product datasheet for use above 2000m
(6560ft).
Keep the following minimum installation clearances: 40mm on top, 20mm on the bottom, 5mm left and right side. Increase the 5mm to
15mm in case the adjacent device is a heat source. When the device is permanently loaded with less than 50%, the 5mm can be reduced
to zero.
The device is designed, tested and approved for branch circuits up to 50A without additional protection device. If an external fuse is
utilized, do not use circuit breakers smaller than 10A B- or C-Characteristic to avoid a nuisance tripping of the circuit breaker.
The maximum surrounding air temperature is +70°C (+158°F). The operational temperature is the same as the ambient or surrounding
air temperature and is defined 2cm below the device.
The device is designed to operate in areas between 5% and 95% relative humidity.

Jun 2020 / Rev. 1.0 DS-CD10.482-EN All values are typical figures specified at 48Vdc input voltage 48V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.

CD10.482

CD-Series

DC/DC Converter 48V/48V, 5A, 240W

4/26

3. DC-INPUT

The input can be powered from batteries or similar DC sources and must be a PELV or SELV source or an "Isolated Secondary Circuit" in

DC input

Nom.

DC 48V

±25%

DC input range

Min.

36-60Vdc

Continuous operation

Allowed voltage between input and
earth/ground

Max.

60Vdc or

42.2Vac

Continuous operation, according to IEC 62477-1

Allowed input ripple voltage

Max.

10Vpp

In the frequency range from 47 to 500Hz, the momentary input
voltage must always be within the specified limits.

Turn-on voltage

Typ.

35Vdc

Steady-state value, see Fig. 3-1

Shut-down voltage

Typ.

31Vdc

Steady-state value, see Fig. 3-1

Input current

Typ.

5.3A

At 48Vdc input and 48V, 5A output load, see Fig. 3-3

Typ.

7.0A

At 36Vdc input and 48V, 5A output load, see Fig. 3-3

Start-up delay

Typ.

530ms

See Fig. 3-1

Rise time

Typ.

80ms

At 48V, 5A constant current load, 0mF load capacitance, see Fig.
3-2

Typ.

380ms

At 48V, 5A constant current load, 5mF load capacitance, see Fig.
3-2

Turn-on overshoot

Max.

500mV

See Fig. 3-2

Input capacitance

Typ.

1 650µF

Installed inside the device, external capacitors on the input are
allowed without any limitations.

External input protection

See recommendations in chapter 2.

Fig. 3-1 Input voltage range

Fig. 3-2 Turn-on behavior, definitions

Turn-on

17.5Vdc

V

IN

P

OUT

Shut-down

32.4Vdc

15.5Vdc

18.0Vdc

Rated input range

35.0Vdc

Start-up

delay

Rise

Time

Overshoot

-5%

Output
Voltage

Input
Voltage

Fig. 3-3 Input current vs. output load

6A

1

2 3

4

0

2

4

6

8A

5

Output Current

Input: 48Vdc

Input Current, typ.

Input: 36Vdc

order to maintain a SELV or PELV output.
Check for correct input polarity. The device will not operate when the voltage is reversed.

Jun 2020 / Rev. 1.0 DS-CD10.482-EN All values are typical figures specified at 48Vdc input voltage 48V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.

CD10.482

CD-Series

DC/DC Converter 48V/48V, 5A, 240W

5/26

Requirements for the Supplying Source

Fig. 3-4 External input filter requirements to avoid filter

instabilities

1 mOhm

10 mOhm

100 mOhm

1 Ohm

0.1mH 1mH 10mH

Inductance of the supplying network

Resistance of the
supplying network

(a) max.
(b) typ.

(a)

(b)

In certain circumstances, the input filter of the DC/DC converter can show a resonant effect which is caused by the supplying network.
Especially when additional external input filters are utilized, a superimposed AC voltage can be generated on the input terminals of the
DC/DC converter which might cause a malfunction of the unit. Therefore, additional input filters are not recommended. To avoid the
resonant effects, the minimal resistance of the supplying network which depends on the inductance of the input network, shall be
above the boundary curve in Fig. 3-4.

Jun 2020 / Rev. 1.0 DS-CD10.482-EN All values are typical figures specified at 48Vdc input voltage 48V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.

CD10.482

CD-Series

DC/DC Converter 48V/48V, 5A, 240W

6/26

4. INPUT INRUSH CURRENT

An active inrush limitation circuit (inrush limiting NTC resistor which is bypassed by a MOSFET) limits the input inrush current after turn-

Inrush current

Max.

10A

peak

Temperature independent

Typ.

7A

peak

Temperature independent

Inrush energy

Max.

1A2s

Temperature independent

Fig. 4-1 Typical input inrush current behavior at nominal load and

25°C ambient

Input Current

Input Voltage

Output Voltage

Ipk 7A

Input: 48Vdc
Output: 48V, 5A, constant current load
Ambient: 25°C

Input current 2A / DIV
Input voltage 10V / DIV
Output voltage 10V / DIV
Time basis: 100ms / DIV

5. SOFT-START FEATURE

on of the input voltage.
The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on.

After the DC/DC converter is turned on, the internal output current rises slowly to its nominal value. This method charges the output
capacitors (internal and external capacitors) slowly and avoids high input currents during turn-on. High input currents can produce a
high voltage drop on the input wiring (especially with long and thin cables) which reduces the terminal voltage on the DC/DC converter.
If the terminal voltage is below the shut-down voltage, the DC/DC converter will turn-off and will make a new start-up attempt. This
effect is avoided with the integrated soft-start function. Please note that this function increases the rise time of the output voltage by a
small amount.

Jun 2020 / Rev. 1.0 DS-CD10.482-EN All values are typical figures specified at 48Vdc input voltage 48V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.

CD10.482

CD-Series

DC/DC Converter 48V/48V, 5A, 240W

7/26

6. OUTPUT

The output provides a SELV/PELV rated voltage, which is galvanically isolated from the input voltage and is designed to supply any kind

Output voltage

Nom.

48V

Adjustment range

Min.

48-56V

Guaranteed value

Max.

58.0V

This is the maximum output voltage which can occur
at the clockwise end position of the potentiometer due to
tolerances. It is not a guaranteed value which can be achieved.

Factory setting

48.0V

±0.2%, at full load, cold unit

Line regulation

Max.

50mV

Between 36 and 60Vdc input voltage variation

Load regulation

Max.

200mV

Between 0 and 5A load variation, static value

Ripple and noise voltage

Max.

100mVpp

Bandwidth 20Hz to 20MHz, 50Ohm

Output current

Nom.

6A

At 48V and an ambient temperature below +45°C

Nom.

5A

At 48V and +60° ambient temperature

Nom.

3.8A

At 48V and +70° ambient temperature

Nom.

5.2A

At 56V and an ambient temperature below +45°

Nom.

4.3A

At 56V and +60° ambient temperature

Nom.

3.2A

At 56V and +70° ambient temperature

Overload behavior

Continuous current

Overload/ short-circuit current

Max.

9A

RMS current, short circuit impedance <90mOhm

Output capacitance

Typ.

1 750µF

Included inside the power supply

Back-feeding loads

Max.

63V

The unit is resistant and does not show malfunctioning when a
load feeds back voltage to the power supply. It does not matter
whether the power supply is on or off. The absorbing energy can
be calculated according to the built-in large sized output
capacitor.

Fig. 6-1 Output voltage vs. output current at 48Vdc input

voltage, typ.

Fig. 6-2 Current limitation vs. input voltage, (46V

constant voltage load), typ.

Output Voltage

0

0 2 4

8

16

24

56V

32

40

48

8A31 5 6 7

Adjustment

Range

Output Current

5.0

6.0

7.0A

30 35 45 50 60Vdc

Input Voltage

Output Current

6.5

55

5.5

40

of loads, including unlimited capacitive and inductive loads.
The output is electronically protected against overload, no-load and short-circuits. In case of a protection event, audible noise may

occur.
The input voltage must also fulfill the SELV/PELV requirements.

Jun 2020 / Rev. 1.0 DS-CD10.482-EN All values are typical figures specified at 48Vdc input voltage 48V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.

CD10.482

CD-Series

DC/DC Converter 48V/48V, 5A, 240W

8/26

7. HOLD-UP TIME

The input side of the DC/DC converter is equipped with a bulk capacitor which keeps the output voltage alive for a certain period of time

Hold-up Time

Typ.

14ms

At 48Vdc input voltage, 48V, 2.5A output, see Fig. 7-1

Min.

11ms

At 48Vdc input voltage, 48V, 2.5A output, see Fig. 7-1

Typ.

7.7ms

At 48Vdc input voltage, 48V,.5A output, see Fig. 7-1

Min.

6.2ms

At 48Vdc input voltage, 48V, 5A output, see Fig. 7-1

Fig. 7-1 Hold-up time vs. input voltage

0

3

9

12

18ms

36 40 44 48 56Vdc

Input Voltage

Hold-up Time

52

(a)

(b)

(c)
(d)

6

15

(a) 48V, 2.5A, typ.
(b) 48V, 2.5A, min.
(c) 48V, 5A, typ.
(d) 48V, 5A, min.

Fig. 7-2 Shut-down test setup

Fig. 7-3 Shut-down behavior, definitions

Load

+

-

DC/DC

Converter

DC

Source

+

-

Input

Output

+

-

CD10

S1

-5%

Hold-up Time

Output
Voltage

Intput
Voltage

S1 opens

when the input voltage dips or is removed. The bulk capacitor can be discharged by loading the DC/DC converter on the output side or
through a load which is parallel to the input. There is no protection in the DC/DC converter which prevents current from flowing back to
the input terminals. If prevention is needed, an external diode should be used.

At no load, the hold-up time can be up to several seconds. The green DC-ok lamp is also on during this time.

Jun 2020 / Rev. 1.0 DS-CD10.482-EN All values are typical figures specified at 48Vdc input voltage 48V, 5A output load,
25°C ambient and after a 5 minutes run-in time unless otherwise noted.