VPOL15A-5-SMT CUI Inc, VPOL15A-5-SMT Datasheet - Page 10

• Manufacturer Part Number: VPOL15A-5-SMT
• Description: CONVERTER DC/DC 3.63VOUT 15A SMD
• Manufacturer: CUI Inc
• Series: V-Infinity VPOL15Ar
• Type: Point of Load (POL) Non-Isolatedr

Specifications of VPOL15A-5-SMT

• Output: 0.9 ~ 3.63V
• Number Of Outputs: 1
• Power (watts): 54W
• Mounting Type: Surface Mount
• Voltage - Input: 3 ~ 5.5V
• Package / Case: 6-DIP SMD Module
• 1st Output: 3.63 VDC @ 15A
• Size / Dimension: 1.30" L x 0.53" W x 0.37" H (33mm x 13.5mm x 9.3mm)
• Power (watts) - Rated: 54W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 94%
• Approvals: cUL, UL
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• 3rd Output: -
• 2nd Output: -
• Other names: 102-1292-2

PART NUMBER: VPOL15A-5-SMT
7.9 VPOL15A-5-SMT Series Output Voltage
Adustment.
The output voltage of the VPOL15A-5-SMT can be adjusted in the
range 0.9V to 3.63V by connecting a single resistor on the motherboard
(shown as Rtrim) in Figure 14. When trim resistor is not connected the
output voltage defaults to 0.75V
The value of Rtrim-up defined as:
Where: Rtrim-up is the external resistor in ohm,
To give an exa mple of the above calculation, to set a voltage of 3.3Vdc,
Rtrim is given by:
Rtrim = 3153 ohm
For various output values various resistors are calculated and provided
in Table 3 for co nvenience.
20050 SW 112
Vo is the desired output voltage
+Vin
Common
VPOL15A-5-SMT
Rtrim =
Figure 14. Trim-up Voltage Setup
Rtrim =
Table 3 – Trim Resistor Values
Vo,set (V)
0.90
1.00
1.20
1.50
1.80
2.00
2.50
3.30
3.63
th
(
(
Common
Vo
Ave. Tualatin, Oregon 97062
Vo
21070
21070
_
_
+Vo
Trim
. 0
. 0
75
75
Rtrim (Kohm)
_
_
135.36
79.17
41.71
22.98
14.96
11.75
6.93
3.15
2.20
5110
5110
R trim-up
)
)
R-Load
phone [phone] fax [phone]
DESCRIPTION: point of load converter
7.10 Output Ripple and Noise Measurement
The test set-up for noise and ripple measurements is shown in Figure
15. a coaxial cable with a 50ohm termination was used to prevent
impedance mismatch reflections disturbing the noise readings at higher
frequencies.
7.11 Output Capacitance
V-Infinity’s VPOL15A-5-SMT series converters provide unconditional
stability with or without external capacitors. For good transient response
low ESR output capacitors should be located close to the point of load.
For high current applications point has already been made in layout
considerations for low resistance and low inductance tracks.
Output capacitors with its associated ESR values have an impact on
loop stability and bandwidth. V-Infinity’s converters are designed to
work with load capacitance up-to 10,000uF. It is rec ommended that any
additional capacitance, typically 1,000uF and low ESR (<20mohm), be
connected close to the point of load and outside the remote
compensation point.
7.12 VPOL15A-5-SMT Reflow Profile
An example of the VPOL15A-5-SMT reflow profile is given in Figure 16.
Equipment used: SMD HOT AIR REFLOW HD-350SAR
Alloy: AMQ-M293TA or N C-SMQ92 IND-82088 SN63
Figure 15. Output Voltage Ripple and Noise Measurement Set-Up
+Vin
Common
240
200
160
120
80
40
VPOL15A-5-SMT
0
0
Figure 16 VPOL15A-5-SMT Reflow Profile
30
Common
+Vo
60
REFLOW PROFILE
TIME (SECONDS)
90
120 150 180 210 240
10uF
Tant.
Ceramic
1uF
rev.
page
date
Test Jack
R-Load
08/2007
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