www.recom-power.com

REV.: 0/2018

PB-7

DC/DC Converter

RP40Q-RUW

Series

Practical Example:

R

T

P

diss

R

T

P

diss

P

20

- 20 = 1.98W

0.91

P

20

- 20 = 1.98W

0.91

T

97.5°C

T

100°C

T

P

out nom.

= 40W

P

out set

= 40 x 0.5 = 20W

R

th

= 6.3K/W (vertical)

h

= 91% (Graph)

T

P

out nom.

= 40W

P

out set

= 40 x 0.5 = 20W

R

th

= 5.0K/W (vertical)

h

= 91% (Graph)

Take the

RP40Q-11005SRUW with 48V Input Voltage and 50% load, natural convection 0.1m/s, in vertical application.

What is the maximum ambient operating temperature?

Take the

RP40Q-11005SRUW-HC with 48V Input Voltage, 50% load, natural convection 0.1m/s, in vertical application and Heat-sink.

What is the maximum ambient operating temperature?

-40

-20

0

20

40

70

60

-30

-10

10

30

50

80 90

110

100

100

80

60

40

90

70

50

30

20

10

0

Ambient Temperature [°C]

natural convection 0.1m/s

1m/s

2.5m/s

-40

-20

0

20

40

70

60

85

-30

-10

10

30

50

80 90

110

100

100

80

60

40

90

70

50

30

20

10

0

Ambient Temperature [°C]

natural convection 0.1m/s

1m/s

2.5m/s

Derating Graph

(@ Chamber - tested with double layer PCB: 160x100mm 105µm Eurocard)

Derating Graph

(@ Chamber - tested with double layer PCB: 160x100mm 105µm Eurocard)

6.3 =

110 - T

amb

1.98

5.0 =

110 - T

amb

1.98

SAFETY AND CERTIFICATIONS

Certificate Type (Safety)

Report / File Number

Standard

Audio/video, information and communication technology equipment.

Safety requirements

pending

EN62368-1:2014 + A11:2017

IEC62368-1:2014 2nd Edition

Information technology equipment - General requirements for safety

pending

EN60950-1:2006 + A2:2013

Railway applications - Electrical equipment used on rolling stock

pending

EN50155, 1st Edition, 2007

RoHS 2+

RoHS 2011/65/EU + AM2015/863

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