VPOL5A-12-SIP CUI Inc, VPOL5A-12-SIP Datasheet - Page 10

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

Specifications of VPOL5A-12-SIP

• Output: 0.75 ~ 5V
• Number Of Outputs: 1
• Power (watts): 25W
• Mounting Type: Through Hole
• Voltage - Input: 8.3 ~ 14V
• Package / Case: 5-SIP Module
• 1st Output: 5 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: 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: 102-1289

PART NUMBER: VPOL5A-12-SIP
7.6 Input Capacitance at the Power Module
The VPOL5A-12-SIP 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 <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 1uH. Current is measured at the input of the module.
7.7 Test Set-Up
The basic test set-up to
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-12-SIP 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
20050 SW 112
Efficiency
Load regulation and line regulation.
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
measure parameters such as efficiency and
_
th
NL
L1
1uH
V
Ave. Tualatin, Oregon 97062
%
NL
Tantalum
x
2*100uF
100
%
in
and -V
o
+Vin
Common
VPOL5A-12-SIP
are connected
phone [phone] fax [phone]
DESCRIPTION: point of load converter
Where: V
The value of line regulation is defined as:
Where: V
Power
Supply
V
+
LL
V
HL
Current Meter
FL
NL
is the output voltage of minimum input voltage at full load.
is the output voltage of maximum input voltage at full load.
is the output voltage at full load
A
is the output voltage at no load
Figure 11. VPOL5A-12-SIP Test Setup
Line
47uF
.
reg =
Voltage Meter
CERAMIC
10UF
V
V
HL
V
+Vin
Common
_
LL
VPOL5A-12-SIP
V
LL
x
Common
100
+Sense
rev.
page
date
+Vo
%
V
08/2007
10 of 12
A
Load