VPOL5A-5-SIP CUI Inc, VPOL5A-5-SIP Datasheet - Page 9

• Manufacturer Part Number: VPOL5A-5-SIP
• Description: CONVERTER DC/DC 3.63V OUT 5A SIP
• Manufacturer: CUI Inc
• Series: V-Infinity VPOL5Ar
• Type: Point of Load (POL) Non-Isolatedr

Specifications of VPOL5A-5-SIP

• Output: 0.75 ~ 3.63V
• Number Of Outputs: 1
• Power (watts): 18W
• Mounting Type: Through Hole
• Voltage - Input: 3 ~ 5.5V
• Package / Case: 5-SIP Module
• 1st Output: 0.75 ~ 3.63 VDC @ 5A
• Size / Dimension: 0.90" L x 0.22" W x 0.40" H (22.9mm x 5.6mm x 10.2mm)
• Power (watts) - Rated: 18W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 94%
• Approvals: EN, IEC, UL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• Other names: 102-1287

PART NUMBER: VPOL5A-5-SIP
7.6 Input Capacitance at the Power Module
The SIP converters must be connected to a low ac source impedance.
To avoid proble ms 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 <100mohm). Electrolytic capacitors should
be avoided. Circuit as shown in Figure 10 represents typical
measurement methods for ripple current. Input reflected-ripple current
is measured with a simulated source Inductance of 1μH. 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 11. 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 VPOL5A-5-SIP 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:
Power
Supply
ç
Load
Efficiency
Load regulation and line regulation.
20050 SW 112
=
To Oscilloscope
Vin
Vo
Figure 10. Input Reflected-Ripple Test Setup
Vin is input voltage,
Iin is input current.
.
Io is output current,
reg
+
x
x
Io
Iin
=
V
x
FL
220uF
ESR<0.1ohm
100
V
_
NL
L1
1uH
th
V
%
NL
Ave. Tualatin, Oregon 97062
x
Tantalum
2*100uF
100
%
in
and -V
o
+Vin
Common
VPOL5A-5-SIP
are connected
phone
phone [phone] fax
DESCRIPTION: point of load converter
The value of line regulation is defined as:
Where: V
Power
Supply
+
V
LL
Current Meter
V
HL
Figure 11. VPOL5A-5-SIP Series Test Setup
NL
is the output voltage of minimum input voltage at full load.
Voltage Meter
is the output voltage of maximum input voltage at full load.
A
is the output voltage at no load
Line
fax [phone]
V
.
reg
100uF
=
V
HL
V
+Vin
Common
_
LL
VPOL5A-5-SIP
V
LL
Series
x
100
Common
+Sense
+Vo
rev.
page
date
%
V
08/2007
9 of 10
A
Load