VPOL15A-5-SMT CUI Inc, VPOL15A-5-SMT Datasheet - Page 9

• 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
7.6 Input Capacitance at the Power Module
The VPOL15A-5-SMT converters must be connected to a low AC
source impedance. To avoid probl ems with loop stability source
inductance should be low. Also, the input capacitors should be placed
close to the converter input pins to de-couple distribution inductance.
However, the external input capacitors are chosen for suitable ripple
handling capability. Low ESR polymers are a good choice. They have
high capacitance, high ripple rating and low ESR (typical <20mohm).
Electrolytic capacitors should be avoided. Circuit as shown in Figure 11
represents typical measurement methods for ripple current. Input
reflected-ripple current is measured with a simulated source Inductance
of 1uH. Current is measured at the input of the module.
7.7 Test Set-Up
The basic test set-up to measure parameters such as efficiency and
load regulation is shown in Figure 12. Things to note are that this
converter is non-isolated, as such the input and output share a common
ground. These grounds should be connected together via low
impedance ground plane in the application circuit. When testing a
converter on a bench set-up, ensure that -V
together via a low impedance short to ensure proper efficiency and load
regulation measurements are being made. When testing the V-Infinity’s
VPOL15A-5-SMT series under any transient conditions please ensure
that the transient response of the source is sufficient to power the
equipment under test. We can calculate the
The value of efficiency is defined as:
Where: Vo is output voltage,
The value of load regulation is defined as:
Where: V
Power
Supply
ç =
20050 SW 112
Load
Load regulation and line regulation.
Efficiency
To Oscilloscope
Vin
Vo
Figure 11. Input Reflected-Ripple Test Setup
Vin is input voltage,
Iin is input current.
.
Io is output current,
reg =
FL
+
is the output voltage at full load
x
x
Io
Iin
V
x
FL
220uF
ESR<0.1ohm
100
V
th
_
NL
L1
1uH
V
Ave. Tualatin, Oregon 97062
%
NL
x
Tantalum
2*100uF
100
%
in
and -V
+Vin
Common
o
VPOL15A-5-SMT
are connected
phone [phone] fax [phone]
DESCRIPTION: point of load converter
The value of line regulation is defined as:
Where: V
7.8 Remote Sense Compensation
Remote sense regulates the output voltage at the point of load. It
minimizes the effects of distribution losses such as drops across the
connecting pin and PCB tracks (see Figure 13). Please note however,
the maximum drop from the output pin to the point of load should not
exceed 500mV for remote compensation to work.
The amount of power delivered by the module is defined as the output
voltage multiplied by the output current (VO x IO).
When using “Trim Up”, the output voltage of the module will increase
which, if the same output current is maintained, increases the power
output by the module. Make sure that the maximum output power of the
module remains at or below the maximum rated power.
disconnected.
When the remote sense feature is not being used, leave sense pin
Power
Supply
Figure 13. Circuit Configuration for Remote Sense Operation
V
+
Current Meter
LL
Figure 12. VPOL15A-5-SMT Series Test Setup
V
HL
NL
is the output voltage of minimum input voltage at full load.
is the output voltage of maximum input voltage at full load.
A
+Vin
Common
Voltage
is the output voltage at no load
Meter
Line
VPOL15A-5-SMT
V
+
.
100uF
reg =
Tant.
Common
V
+Vin
Common
+Sense
HL
VPOL15A-5-SMT
V
+Vo
_
LL
V
LL
x
Distribution Losses
Distribution Losses
100
Common
+Sense
+Vo
%
rev.
page
date
R-Load
V
Current Meter
Voltage Meter
08/2007
9 of 11
A
R-Load