VPOL5A-12-SMT CUI Inc, VPOL5A-12-SMT Datasheet - Page 7

• Manufacturer Part Number: VPOL5A-12-SMT
• Description: CONVERTER DC/DC 5.0V OUT 5A SMD
• Manufacturer: CUI Inc
• Series: V-Infinity VPOL5Ar
• Type: Point of Load (POL) Non-Isolatedr

Specifications of VPOL5A-12-SMT

• Output: 0.75 ~ 5V
• Number Of Outputs: 1
• Power (watts): 25W
• Mounting Type: Surface Mount
• Voltage - Input: 8.3 ~ 14V
• Package / Case: 5-DIP SMD Module
• 1st Output: 5 VDC @ 5A
• Size / Dimension: 0.80" L x 0.45" W x 0.24" H (20.3mm x 11.4mm x 6.1mm)
• Power (watts) - Rated: 25W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 92%
• Approvals: cUL, UL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• Other names: 102-1290-2

PART NUMBER: VPOL5A-12-SMT
7.2 Convection Requirements for Cooling
To predict the ap proximate cooling needed for the module, refer to the
Power De-rating curves in Figures 10 to 13. These de-rating curves are
approximations of the ambient temperatures and airflows required to
keep the power module temperature below its maximum rating. Once
the module is assembled in the actual system, the module’s
temperature should be checked as shown in Figure 6 to ensure it does
not exceed 110° C.
Proper cooling can be verified by measuring the power module’s
temperature at Q1-pin 6 as shown in Figure 7.
Bakelite
Tunnel
W ind
20050 SW 112
Note : Dimensions are in millimeters and (inches)
Figure 6. Thermal Test Setup
th
25.4(1.0)
12.7(0.5)
Ave. Tualatin, Oregon 97062
flow
Air
76.2(3.0)
Power Module
Thermocuple Location
for measuring
ambient temperature
and airflow
phone [phone] fax [phone]
DESCRIPTION: point of load converter
7.3 Thermal Considerations
The power module operates in a variety of thermal environments;
however, sufficient cooling should be provided to help ensure reliable
operation of the unit. Heat is removed by conduction, convection, and
radiation to the surrounding environment. The thermal data presented is
based on measurements taken in a set-up as shown in Figure 7.
Figures 8 & 9 represent the test data. Note that the airflow is parallel to
the long axis of the module as shown in Figure 6 for the VPOL5A-12-
SMT.
The temperature at either location should not exceed 110 °C. The
output power of the module should not exceed the rated power for the
module (VO, set x IO, max). The VPOL5A-12-SMT thermal data
presented is based on measurements taken in a wind tunnel. The test
setup shown in Figure 6 and EUT need to solder on 33mm x
40.38mm(1.300'' x 1.59'') test pcb. Note that airflow is parallel to the
long axis of the module as shown in Fig 7.
Figure 7. Temperature Measurement Locati on for
VPOL5A-12-SMT
rev.
page
date
08/2007
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