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PRF20-Q110-S15

P1-P3P4-P6
cui.com
CUI Inc │ SERIES: PRF20 │ DESCRIPTION: DC-DC CONVERTER date 02/12/2014 │ page 4 of 6
100
80
60
40
20
Ambient Temperature (°C)
Load (%)
-40 -20 0 20 40 60
8073 105 120
Temperature Derating Curve
Safe operating area
DERATING CURVES
EMC RECOMMENDED CIRCUIT
Figure 2
Figure 1
Table 2
Table 1
TEST CONFIGURATION
Cin
L1
To Oscilloscope
+Vin
-Vin
+Vo
-Vo
R-Load
Vin
+
-
Note: Input refl ected-ripple current is measured with an inductor L1 to simulate source impedance.
External components
Lin 12μH
Cin 22μF, ESR < 0.2Ω at 100 KHz
External components
3A time delay fuse
TVS
+Vin
-Vin
+Vo
-Vo
R-Load
Vin
+
-
FUSE
TVS
EN50155(EN50121-3-2)
For more information, please visit the product page.
cui.com
CUI Inc │ SERIES: PRF20 │ DESCRIPTION: DC-DC CONVERTER date 02/12/2014 │ page 5 of 6
APPLICATION NOTES
Note: 1. All specifi cations are measured at Ta=25°C, nominal input voltage and full output load unless otherwise specifi ed.
Output Voltage Trimming
Leave open if not used.
Table 3
Vout
(Vdc)
R1
(KΩ)
R2
(KΩ)
R3
(KΩ)
Rt
(KΩ)
Vr
(V)
5 2.32 2.32 0 8.2 2.5
12 6.8 2.4 2.32 22 2.5
15 8.06 2.4 3.9 27 2.5
+Vin
R trim-up
R-Load
Trim
+Vo
-Vin
-Vo
Trim up
+Vin
-Vin
-Vo
+Vo
R trim-down
R-Load
Trim
Trim down
Rtrim - up = ( ) - Rt (KΩ)
R
trim - down = R1 x ( -1) - Rt (KΩ)
Vr x R1 x (R2 + R3)
(V
o - Vo, nom) x R2
Vr x R1
(Vo, nom - Vo) x R2
Note: R
trim-up
is the external resistor in KΩ
R
trim-down
is the external resistor in KΩ
V
O, nom
is the nominal output voltage
V
O
is the desired output voltage
R1, R2, R3, Rt, and Vr are internal (see table 3).
Figure 3
Formula for Trim ResistorApplication Circuit for Trim pin
For more information, please visit the product page.
CUI Inc │ SERIES: PRF20 │ DESCRIPTION: DC-DC CONVERTER date 02/12/2014 │ page 6 of 6
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a
life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
cui.com
techsupport@cui.com
rev. description date
1.0 initial release 02/12/2014
The revision history provided is for informational purposes only and is believed to be accurate.
REVISION HISTORY
For more information, please visit the product page.
P1-P3P4-P6

PRF20-Q110-S15

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Description:
Isolated DC/DC Converters dc-dc isolated, 20 W, 43 160 Vdc input, 15 Vdc, 1330 mA, single regulated output, DIP
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