Datasheet

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rev.
PART NUMBER: VPOL16A-12-SIP
page
1 of 12
date
08/2007
DESCRIPTION: point of load converter
features
* industry standard pin out
* high efficiency to 94%
* 300 KHz switching frequency
* 9.0-14 VDC wide input range
* 0.75-5.0 VDC wide output range
* over temperature protection
* continuous short circuit protection
* remote on/off
* cost-efficient open frame design
* UL/C-UL60950-1 (E222736) certified
1. INTRODUCTION
2. VPOL16A-12-SIP CONVERTER FEATURES
7. APPLICATIONS
7.1 Layout Design Challenges.
3. GENERAL DESCRIPTION
3.1 Electrical Description
7.2 Convection Requirements for Cooling
3.2 Thermal Packaging and Physical Design.
7.4 Power De-Rating Curves
4. TECHNICAL SPECIFICATIONS
7.5 Efficiency vs Load Curves
5. MAIN FEATURES AND FUNCTIONS
5.1 Operating Temperature Range
7.6 Input Capacitance at the Power Module
5.2 Over-Temperature Protection (OTP)
7.8 Remote Sense Compensation
5.3 Output Voltage Adjustment
7.8 VPOL16A-12-SIP Series Output Voltage Adustment.
5.4 Safe Operating Area (SOA)
7.9 Output Ripple and Noise Measurement
5.5 Over Current Protection
7.10 Output Capacitance
5.6 Remote ON/OFF
7.11 VPOL16A-12-SIP Reflow Profile
5.7 UVLO (Under-Voltage Lockout)
6. SAFETY
6.1 Input Fusing and Safety Considerations.
7.3 Thermal Considerations
7.7 Test Set-Up
8. MECHANICAL OUTLINE DIAGRAMS
8.1 VPOL16A-12-SIP Mechanical Outline Diagrams
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
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rev.
PART NUMBER: VPOL16A-12-SIP
page
2 of 12
date
08/2007
DESCRIPTION: point of load converter
The converter is also protected against over-temperature conditions. If
1. Introduction
the converter is overloaded or the ambient temperature gets too high,
the converter will shut down to protect the unit.
This application note describes the features and functions of CUI INC's
VPOL16A-12-SIP series of Non Isolated DC-DC Converters. These are
L1
Q1
+VIN
+VO
highly efficient, reliable and compact, high power density, single output
DC/DC converters. These “Point of Load” modules serve the needs
Q2
C1
specifically of the fixed and mobile telecommunications and computing
D1
C2
R sense
+SENSE
market, employing economical distributed Power Architectures. The
VPOL16A-12-SIP series provide precisely regulated output voltage
range from 0.75V to 5.0Vdc over a wide range of input voltage (Vi=9.0 –
COM
COM
14Vdc) and can operate over an ambient temperature range of –40°C
to +85°C. Ultra-high efficiency operation is achieved through the use of
synchronous rectification and drive control techniques.
PWM IC
ON/OFF
The modules are fully protected against short circuit and over-
High efficiency topology, typically 94% at 5.0Vdc
Industry standard footprint
Wide ambient temperature range, -40°C to +85°C
Cost efficient open frame design
Programmable output voltage via external resistor from 0.75 to
TRIM
Figure 1. Electrical Block Diagram
qualification program, ensure that all VPOL16A-12-SIP series
2. VPOL16A-12-SIP Converter
Features
R trim
ERR AMP
R2
temperature conditions. CUI INC's world class automated
manufacturing methods, together with an extensive testing and
converters are extremely reliable.
R1
3.2 Thermal Packaging and Physical Design.
The VPOL16A-12-SIP series uses a multi-layer FR4 PCB construction.
All surface mount power components are placed on one side of the
PCB, and all low-power control components are placed on the other
side. Thus, the Heat dissipation of the power components is optimized,
ensuring that control components are not thermally stressed. The
converter is an open-frame product and has no case or case pin. The
open-frame design has several advantages over encapsulated closed
devices. Among these advantages are:
5.0Vdc
Efficient Thermal Management: the heat is removed from the
No minimum load requirement (Stable at all loads)
heat generating components without heating more sensitive, small
Remote ON/OFF
signal control components.
Remote sense compensation
Environmental: Lead free open-frame converters are more easily
Fixed switching frequency
re-cycled.
Continuous short-circuit protection and over current protection
Cost Efficient: No encapsulation. Cost efficient open-frame
Over-temperature protection (OTP)
construction.
Monotonic Startup with pre-bias at the output.
Reliable: Efficient cooling provided by open frame construction
UL/IEC/EN60950 Certified.
offers high reliability and easy diagnostics.
3. General Description
3.1 Electrical Description
A block diagram of the VPOL16A-12-SIP Series converter is shown in
Figure 1. Extremely high efficiency power conversion is achieved
through the use of synchronous rectification and drive techniques.
Essentially, the powerful VPOL16A-12-SIP series topology is based on
a non-isolated synchronous buck converter. The control loop is
optimized for unconditional stability, fast transient response and a very
tight line and load regulation. In a typical pre-bias application the
VPOL16A-12-SIP series converters do not draw any reverse current at
start-up. The output voltage can be adjusted from 0.75 to 5.0vdc, using
the TRIM pin with a external resistor. The converter can be shut down
via a remote ON/OFF input that is referenced to ground. This input is
compatible with popular logic devices; a 'positive' logic input is supplied
as standard. Positive logic implies that the converter is enabled if the
remote ON/OFF input is high (or floating), and disabled if it is low.
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
For more information, please visit the product page.
rev.
page
3 of 12
date
08/2007
DESCRIPTION: point of load converter
PART NUMBER: VPOL16A-12-SIP
4. Technical Specifications
(All specifications are typical at nominal input, full load at 25°C unless otherwise noted.)
Device
PARAMETER
NOTES and CONDITIONS
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
Operating Temp erature
See Thermal Considerations Section
Min.
Typical Max.
Units
ALL
0
15
Vdc
ALL
-40
+85
°C
ALL
-55
+125
°C
ALL
9.0
14
Vdc
Storage Temperature
INPUT CHARACTERISTICS
Operating Input Voltage
Input Under-Voltage Lockout
Turn -On Voltag e Threshold
Turn -Off Voltag e Threshold
Lockout Hysteresis Voltage
ALL
ALL
ALL
ALL
12
8.0
7.7
0.3
Vdc
Vdc
Vdc
Maximum Input Current
Vin=0 to 14Vdc , Io=Io,max.
No-Load Input Current
Vo=0.75V
Vo=1.2V
Vo=1.5V
Vo=1.8V
Vo=2.0V
Vo=2.5V
Vo=3.3V
Vo=5.0V
ALL
Off Converter Input Current
Shutdown input idle current
ALL
10
mA
ALL
0.1
As
2
Inrush Current (I t)
Input Reflected-Ripple Current
11
40
50
50
60
60
65
75
75
A
mA
2
P-P thru 1uH inductor, 5Hz to 20MHz
ALL
300
mA
Output Voltage S et Point
Vin=Nominal Vin , Io=Io.max, Tc=25
ALL
-1.5% Vo,set +1.5%
Vdc
Output Voltage Trim Adjustment Range
Selected by an extern al resistor
ALL
OUTPUT CHARACTERISTIC
0.75
5.0
Vdc
Output Voltage Regulation
Load Regulation
Io=Io.min to Io.max
ALL
-0.5
+0.5
%
Line Regulation
Vin=low line to high line
ALL
-0.2
+0.2
%
Tempera ture Coefficient
Ta=-40° C to 85°C
ALL
-0.03
+0.03
%/°C
Output Voltage Ripple and Noise
5Hz to 20MHz bandwidth
75
mV
Peak-to-Peak
RMS
External Capacitive Load
Full Load, 1uF ceramic and 10uF tantalum
ALL
Full Load, 1uF ceramic and 10uF tantalum
ALL
30
mV
Lo w ESR
ALL
8000
uF
16
A
28
A
Operating Output Current Range
ALL
0
18
Output DC Current-Limit Inception
Output Voltage =90% Nominal Output Voltage
ALL
Shout Circuit Protection
Continuous with Hiccup Mode
ALL
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
23
For more information, please visit the product page.
rev.
4 of 12
date
08/2007
DESCRIPTION: point of load converter
PART NUMBER: VPOL16A-12-SIP
PARAMETER
DYNAMIC CHARACTERISTICS
page
NOTES and CONDITIONS
Device
Min.
Typical Max.
Units
Output Voltage Transient Response
Error Brand
50% Step Load Change, di/dt=0.1A/us
ALL
200
mV
Setting Time (within 1% Vout nominal)
50% Step Load Change, di/dt=0.1A/us
ALL
200
us
EFFICIENCY
100% Load
ISOLATION CHARACTERISTICS
Input to Output
Vo=0.75V
Vo=1.2V
Vo=1.5V
Vo=1.8V
Vo=2.0V
Vo=2.5V
Vo=3.3V
Vo=5.0V
ALL
Non-isolation
ALL
77
83
86
88
89
90
92
94
%
0
Vdc
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control, Positive Logic Remote On/Off
Logic Low (Module Off)
Logic High (Module On)
ALL
or Open Circuit
ON/OFF Control, Negative Logic Remote On/Off
Logic Low (Module On)
or Open Circuit
Logic High (Module Off)
ON/OFF Current (for both remote on/off logic)
Leakage Current (for both remote on/off logic)
Turn -On Delay and Rise Time
Turn -On Delay Time, From On/Off Control
Turn -On Delay Time, From I nput
Output Voltage Rise Time
Over Temperature Protection
GENERAL SPECIFICATIONS
MTBF
Weight
Dimensions VPOL16A-12-SIP packages
300
VPOL16A-12-SIP
0
VPOL16A-12-SIP
0
2.8
Vin
KHz
0.4
Vdc
Vdc
0.4
Vin
Vdc
Vdc
1
1
mA
mA
Ion/off at Von/off =0.0V
Logic High, Von/off=14V
ALL
ALL
Von/off to 10 %Vo,set
Vin,min. to 10%V o,set
10%Vo,set to 90 %Vo,set
ALL
ALL
ALL
ALL
3.5
3.5
3.5
130
ms
ms
ms
°C
ALL
0.98
M hours
ALL
10
grams
Io=100%of Io.max;Ta=2 5°C per MIL-HDBK217F
2x0.512x0.327 inches (50.8x13.0x8.3 mm)
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
For more information, please visit the product page.
rev.
5 of 12
date
08/2007
DESCRIPTION: point of load converter
PART NUMBER: VPOL16A-12-SIP
+Vin
ON/OFF
Control
page
+Vo
7. Applications
7.1 Layout Design Challenges.
Remote ON/OFF
Q1
In optimizing thermal design the PCB is utilized as a heat sink. Also
VPOL16A-12-SIP
Common
Common
some heat is transferred from the VPOL16A-12-SIP module to the main
board through connecting pins. The system designer or the end user
must ensure that other components and metal in the vicinity of the
VPOL16A-12-SIP series meet the spacing requirements to which the
Figure 3. Positive Remote ON/OFF Input Drive Circuit
+Vin
+Vo
Q1
ON/OFF
Control
VPOL16A-12-SIP
system is approved.
Low resistance and low inductance PCB layout traces are the norm and
should be used where possible. Due consideration must also be given
to proper low impedance tracks between power module, input and
output grounds. The recommended VPOL16A-12-SIP footprint is shown
as figure 5.
Remote ON/OFF
Common
Common
Figure 4. Negative Remote ON/OFF Input Drive Circuit
5.7 UVLO (Under-Voltage Lockout)
The voltage on the Vcc pin determines the start of the operation of the
0.29(7.4)
LAYOUT PATTERN
TOP VIEW
All Dimmension In Inches(mm)
Tole rance :
.XX= ± 0.04
.XXX= ± 0.010
0.33(8.4)
1.1mm PLATED THROUGH HOLE
1.6mm PAD SIZE
Figure 5. Recommended VPOL16A-12-SIP Footprint
Converter. When the input Vcc rises and exceeds about 8.0V the
converter initiates a soft start. The UVLO function in the converter has a
hysteresis (about 300mV) built in to provide noise immunity at start-up.
6. Safety
6.1 Input Fusing and Safety Considerations.
Agency Approvals: The power Supply shall be submitted to and
receive formal approval from the following test agencies.
1.The power supply shall be approved by a nationally recognized
rd
testing laboratory to UL/CSA 60950 3 Edition (North America) and
EN60950 (International)
2. CB Certificate from an internationally recognized test house in
accordance with EN 60950.
The VPOL16A-12-SIP series converters do not have an internal fuse.
However, to achieve maximum safety and system protection, always
use an input line fuse. The safety agencies require a time-delay fuse
with a maximum rating of 20A.
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
For more information, please visit the product page.
rev.
6 of 12
date
08/2007
DESCRIPTION: point of load converter
PART NUMBER: VPOL16A-12-SIP
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 8 & 9 . 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 120°C.
Proper cooling can be verified by measuring the power module’s
temperature at Q1-pin 6 as shown in Figure 7.
W ind
Tunnel
page
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 6.
Figures 8 & 9 represent the test data. Note that the airflow is parallel to
the long axis of the module as shown in Fig 6 for the VPOL16A-12-SIP.
The temperature at either location should not exceed 120 °C. The
output power of the module should not exceed the rated power for the
module (VO, set x IO, max). The VPOL16A-12-SIP thermal data
25.4(1.0)
presented is based on measurements taken in a wind tunnel. The test
setup shown in Figure 7 and EUT need to solder on 33mm x
Bakelite
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 6.
Power Module
76.2(3.0)
Thermocuple Location
for measuring
ambient temperature
and airflow
12.7(0.5)
Air
flow
Note : Dimensions are in millimeters and (inches)
Figure 6. Thermal Test Setup
Figure 7. Temperature Measurement Location for VPOL16A12-SIP
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
For more information, please visit the product page.
rev.
DESCRIPTION: point of load converter
PART NUMBER: VPOL16A-12-SIP
TYPICAL POWER DERATING FOR 5 Vin 3.3 Vout
18
16
Output Current(A)
14
12
10
0LFM
100LFM
200LFM
300LFM
8
6
4
2
0
0
10
20
30
40
50
60
70
80
90
100
Ambient Temperature(o C)
NOTE:
1. specific input & output derating curves available, please
contact CUI INC for detail
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
page
7 of 12
date
08/2007
For more information, please visit the product page.
rev.
page
8 of 12
date
08/2007
DESCRIPTION: point of load converter
PART NUMBER: VPOL16A-12-SIP
7.5 Efficiency vs Load Curves (Fig. 9)
VPOL16A-12-SIP Vo=3.3V (Eff Vs Io)
VPOL16A-12-SIP Vo=5.0V (Eff Vs Io)
95%
95%
Efficincy (%)
100%
Efficincy (%)
100%
90%
90%
85%
85%
9.0V
12V
14V
80%
75%
70%
9.0V
12V
14V
80%
75%
70%
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
0
Current Load (A)
VPOL16A-12-SIP Vo=2.5V (Eff Vs Io)
100%
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
Current Load (A)
VPOL16A-12-SIP Vo=2.0V (Eff Vs Io)
100%
95%
95%
Efficincy (%)
Efficincy (%)
90%
90%
85%
85%
80%
9.0V
12V
14V
80%
75%
70%
9.0V
12V
14V
75%
70%
65%
60%
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
Current Load (A)
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
Current Load (A)
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
For more information, please visit the product page.
rev.
page
9 of 12
date
08/2007
DESCRIPTION: point of load converter
PART NUMBER: VPOL16A-12-SIP
VPOL16A-12-SIP Vo=1.8V (Eff Vs Io)
VPOL16A-12-SIP Vo=1.5V (Eff Vs Io)
95%
95%
90%
90%
85%
Efficincy (%)
100%
Efficincy (%)
100%
85%
80%
80%
9.0V
12V
14V
75%
70%
65%
60%
9.0V
12V
14V
75%
70%
65%
60%
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
0
Current Load (A)
VPOL16A-12-SIP Vo=1.2V (Eff Vs Io)
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
Current Load (A)
VPOL16A-12-SIP Vo=0.75V (Eff Vs Io)
100%
100%
95%
95%
90%
90%
Efficincy (%)
Efficincy (%)
85%
85%
80%
80%
75%
9.0V
12V
14V
75%
70%
65%
60%
70%
9.0V
12V
14V
65%
60%
55%
50%
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
Current Load (A)
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
Current Load (A)
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
For more information, please visit the product page.
rev.
Where:
7.6 Input Capacitance at the Power Module
The VPOL16A-12-SIP converters must be connected to a low AC
source impedance. To avoid probl ems with loop stability source
However, the external input capacitors are chosen for suitable ripple
handling capability. Low ESR polymers are a good choice. They have
Line.reg=
VLL is the output voltage of minimum input voltage at full load.
high capacitance, high ripple rating and low ESR (typical <100mohm).
Current Meter
A
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.
Power
Supply
+Vin
+Sense
V 100uF
Voltage Meter
VPOL16A-12-SIP
Common
+Vin
2*100uF
Tantalum
A
+Vo
+
To Oscilloscope
Supply
VHL _ VLL
x 100%
VLL
Where: VHL is the output voltage of maximum input voltage at full load.
Electrolytic capacitors should be avoided. Circuit as shown in Figure 10
+
08/2007
The value of line regulation is defined as:
close to the converter input pins to de-couple distribution inductance.
Power
date
VFL is the output voltage at full load
VNL is the output voltage at no load
inductance should be low. Also, the input capacitors should be placed
1uH
10 of 12
DESCRIPTION: point of load converter
PART NUMBER: VPOL16A-12-SIP
L1
page
V
Load
Common
Figure 11. VPOL16A-12-SIP Series Test Setup
7.8 Remote Sense Compensation
VPOL16A-12-SIP
220uF
ESR<0.1ohm
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 12). Please note however,
the maximum drop from the output pin to the point of load should not
Common
Figure 10. Input Reflected-Ripple Test Setup
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 -Vin and -Vo are connected
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.
When the Remote Sense feature is not being used, leave sense pin
disconnected.
Figure 12. Circuit Configuration for Remote Sense Operation
together via a low impedance short to ensure proper efficiency and load
regulation measurements are being made. When testing the CUI INC's
VPOL16A-12-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
Efficiency
Distribution Losses
+Vin
Load regulation and line regulation.
+Vo
+Sense
The value of efficiency is defined as:
R-Load
Vo x Io
x 100%
ç=
Vin x Iin
Common
Where:
Vo is output voltage,
Common
Distribution Losses
Io is output current,
Vin is input voltage,
Iin is input current.
The value of load regulation is defined as:
Load .reg=
VFL _ VNL
x 100%
VNL
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
For more information, please visit the product page.
rev.
page
11 of 12
date
08/2007
DESCRIPTION: point of load converter
PART NUMBER: VPOL16A-12-SIP
7.8 VPOL16A-12-SIP Series Output Voltage
Adustment.
7.9 Output Ripple and Noise Measurement
The test set-up for noise and ripple measurements is shown in Figure
The output Voltage of the VPOL16A-12-SIP can be adjusted in the
14. a coaxial cable with a 50ohm termination was used to prevent
range 0.75V to 5.0V by connecting a single resistor on the motherboard
impedance mismatch reflections disturbing the noise readings at higher
(shown as Rtrim) in Figure 13. When Trim resistor is not connected the
frequencies.
output voltage defaults to 0.75V
+Vin
+Vin
+Vo
Common
1uF
Ceramic
R-Load
Test Jack
R-Load
Common
Common
R trim-up
Figure 14. Output Voltage Ripple and Noise Measurement Set-Up
Common
Figure 13. Trim-up Voltage Setup
The value of Rtrim-up defined as:
7.10 Output Capacitance
CUI INC's VPOL16A-12-SIP series converters provide unconditional
stability with or without external capacitors. For good transient response
10500 _
Rtrim = ( _
1000 )
Vo 0.75
Where:
10uF
Tant.
VPOL16A-12-SIP
Trim
VPOL16A-12-SIP
+Vo
Rtrim-up is the external resistor in ohm,
Vo is the desired output voltage
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. CUI INC's converters are designed to
work with load capacitance up-to 8,000uF. It is reco mmended that any
To give an exa mple of the above calculation, to set a voltage of 3.3Vdc,
additional capacitance, Maximum 8,000uF and low ESR, be connected
Rtrim is given by:
close to the point of load and outside the remote compensation point.
Rtrim = (
10500 _
1000 )
_
3.3 0.75
Rtrim = 3117 ohm
7.11 VPOL16A-12-SIP Reflow Profile
An example of the VPOL16A-12-SIP reflow profile is given in Figure 15.
Equipment used: SMD HOT AIR REFLOW HD-350SAR
Alloy: AMQ-M293TA or N C-SMQ92 IND-82088 SN63
For various output values various resistors are calculated and provided
Rtrim (Kohm)
Open
22.33
13.0
9.0
7.4
5.0
3.12
1.47
Table 3 – Trim Resistor Values
200
TEMPERATURE (C)
Vo,set (V)
0.75
1.20
1.50
1.80
2.00
2.50
3.30
5.0
REFLOW PROFILE
240
in Table 3 for co nvenience.
160
120
80
40
0
0
30
60
90
120 150 180 210 240
TIME (SECONDS)
Figure 15 VPOL16A-12-SIP Reflow Profile
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
For more information, please visit the product page.
rev.
page
12 of 12
date
08/2007
DESCRIPTION: point of load converter
PART NUMBER: VPOL16A-12-SIP
8. Mechanical Outline Diagrams
8.1 VPOL16A-12-SIP Mechanical Outline Diagrams
Dimensions are in millimeters and inches
Tolerance: x.xx ±0.02 in. (0.5mm) , x.xxx ±0.010 in. (0.25 mm) unless
otherwise noted
Pin Connection
SIZE VPOL16A-12-SIP
2.00(50.8)
0.100(2.54)
0.010(0.25)
min.
0.025(0.64)
1.000(25.40)
0.400(10.20)
0.23(5.8)
6 7 8 9 10 11
1 2 3 4 5
0.14(3.6)
0.327(8.30)max.
0.512(13.00)
0.050(1.30)
0.28(7.1)
0.025(0.64)
Pin
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Function
+output
+output
+sense
+output
common
common
+v input
+v input
no pin
trim
on/off control
Figure 19 VPOL16A-12-SIP Mechanical Outline Diagram
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
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