16A

Technical
Specification
NQ16W50SMA16
6.0-16.0V 0.75-5.0V
Input
16 Amp
Outputs
Current
The NiQor SMT DC/DC converter is a nonisolated buck regulator, which employs
synchronous rectification to achieve extremely
high conversion efficiency. The NiQor family
of converters are used predominately in DPA
systems using a front end DC/DC high power
brick (48Vin to low voltage bus). The nonisolated NiQor converters are then used at the
point of load to create the low voltage outputs
required by the design. The wide trim module
can be programmed to a variety of output
voltages through the use of a single external
resistor. RoHS compliant (see page 12).
Mechanical Features
• DOSA standard SMT pin-out configuration
• Industry standard size: 1.3” x 0.53” x 0.29”
(33 x 13.5 x 7.3 mm)
• Total weight: 0.18 oz. (5 grams), lower mass greatly
reduces vibration and shock problems
• Open frame construction maximizes air flow cooling
• Also available in SIP packaging
Protection Features
• Input under-voltage lockout disables converter at low
input voltage conditions
• Temperature compensated over-current shutdown protects
converter from excessive load current or short circuits
• Output over-voltage protection protects load from
damaging voltages
• Thermal shutdown protects converter from abnormal
environmental conditions
Safety Features
Control Features
• On/Off control
• Output voltage trim (industry standard) permits custom
voltages and voltage margining
• Remote Sense (standard option)
Phone 1-888-567-9596
Surface Mount
NiQor surface mount module
• Ultra high efficiency, up to 94% at full rated load
• Delivers up to 16 Amps of output current with minimal
derating - no heatsink required
• Input Voltage Range : 6.0 - 16.0V
• Fast transient response time
• On-board input and output filter capacitor
• No minimum load requirement means no preload resistors required
Isolated
SMT
Non-Isolated
Operational Features
Product # NQ16W50SMA16
Non
• UL 60950-1:2003
• CAN/CSA-C22.2 No. 60950-1:2003
• EN60950-1:2001
• RoHS compliant (see page 12)
www.synqor.com
Doc.# 005-2NS12WE Rev. C
12/06/2011
Page 1
Input:
Outputs:
Current:
Package:
Mechanical Diagram
6.0 - 16.0V
0.75 - 5.0V
16A
SMT
Surface Mount Package
Side View
Bottom View
0.288+.018
1.30
(7.32+0.45)
(33.0)
see Note 4
0.025
(0.64)
2
3
4
5
0.075
0.063
(1.91)
(1.60)
0.405
(10.29)
Typ.
0.53
(13.5)
7
6
0.012+.007
(0.3+0.17)
Bottomside
Clearance
0.297
(7.54)
(1.6)
(1.22)
(12.37)
(2.54)
0.063
0.048
0.487
0.100
0.677
Typ.
(17.20)
0.867
(22.02)
Recommended SMT Pad Size:
Minimum: 0.074” x 0.122” (1.88mm x 3.1mm)
Maximum: 0.095” x 0.140” (2.41mm x 3.56mm)
1.057
(26.85)
1.177
(29.90)
NOTES
SMT CONTACT DESIGNATIONS
1) SMT Contacts: Material - Brass
Finish - Gold over Nickel plate
2) Undimensioned components are shown for visual
reference only.
3) All dimensions in inches (mm)
Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
4) Coplanarity for pins 1-7 is 0.004” max
5) Weight: 0.18 oz. (5 g) typical
6) Workmanship: Meets or exceeds IPC-A-610C Class II
Product # NQ16W50SMA16
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2
GND
Ground
3
Vout(+)
Positive output voltage
4
TRIM
Output Voltage Trim
5
SENSE(+)
Positive remote sense
6
Vin(+)
Positive input voltage
7
ON/OFF
Input to turn converter on/off
Pins in Italics Shaded text are Optional
www.synqor.com
Doc.# 005-2NS12WE Rev. C
12/06/2011
Page 2
Input:
Outputs:
Current:
Package:
Technical Specification
6.0 - 16.0V
0.75 - 5.0V
16A
SMT
ELECTRICAL CHARACTERISTICS - NQ16W50SMA16
TA=25°C, airflow rate=300 LFM, Vin=12Vdc unless otherwise noted; full operating temperature range is -40°C to +105°C ambient
temperature with appropriate power derating. Specifications subject to change without notice.
Parameter
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
Operating
Operating Temperature
Storage Temperature
Voltage at ON/OFF input pin
RECOMMENDED OPERATING CONDITIONS
Input Voltage Range
Input Fuse Rating
External Input Capacitance
Output Voltage
Output Current
INPUT CHARACTERISTICS
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Hysteresis
Maximum Input Current
“
“
No-Load Input Current
“
“
Disabled Input Current
Inrush Current Transient Rating
Input Filter Capacitor Value
Input Reflected-Ripple Current
“
“
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Output Voltage Range
Operating Output Current Range
Output Voltage Regulation
Over Line
Over Load
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and Noise (pk-pk\RMS)
“
“
Output DC Over Current Shutdown
External Output Capacitance
DYNAMIC CHARACTERISTICS
Input Voltage Ripple Rejection
Output Voltage during Current Transient
For a Step Change in Output Current (0.1A/µs)
For a Step Change in Output Current (3A/µs)
Settling Time
Turn on Transient
Inhibit Time
Rise Time
Output Voltage Overshoot
EFFICIENCY
100% Load
“
“
50% Load
“
“
Product # NQ16W50SMA16
Vout
Min.
Typ.
All
0
All
All
-40
All
-55
All
-3
Max.
Units Notes & Conditions
18
16
105
125
15
All
6
16
All
20
All
100
All
0.75
5.5
All
0
16
VContinuous
VContinuous
°C
°C
V
V
A
Fast blow external fuse recommended
µFESR<1.5W
V
A
All
5.35
5.73
6.10
V
All
4.50
4.73
4.95
V
All1V
0.75V
2.8
A
6Vin, 100% load
2.5V
7.5
A “
5.0V
14.0 A “
0.75V
31
mA
12Vin
2.5V
71
mA
“
5.0V
132
mA
“
All
3
mA
All
0.1
A2s
With min. output capacitance
All
30
µF
0.75V
36
mA
12Vin, 100% load, pk-pk value
2.5V68
mA “
5.0V98
mA “
0.75V
All
All
0.745
0.75
0.75
0
0.755
5.0
16
All
0.5
All
0.5
All
1
All
3
1.0V
27\5.0
2.5V43\11.6
5.0V67\20.4
All
20
24
28
All
100
5000
All
50
V
V
A
12Vin 50% load
Set output by Rtrim-up
%
With sense pin
%
“
%
“
%
With sense pin, over sample, line, load, temp. & life
mV
Full load; 20MHz bandwidth
mV
“
mV
“
A
µF>0.5mW
dB
All
180
mV
All
180
mV
All100µs
120Hz
50%-75%-50% Iout max; 100uF
50%-75%-50% Iout max; 470uF
To within 1.5% Vout nom.
All
2
4
ms
Resistive load
All
26
ms
“
All
0
V
“
0.75V
77.0
%
2.5V90.0%
5.0V94.0%
0.75V
81.0
%
2.5V91.5%
5.0V94.0%
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www.synqor.com
Doc.# 005-2NS12WE Rev. C
12/06/2011
Page 3
Input:
Outputs:
Current:
Package:
Technical Specification
6.0 - 16.0V
0.75 - 5.0V
16A
SMT
ELECTRICAL CHARACTERISTICS (continued) - NQ16W50SMA16
Parameter
Vout
Min.
Typ.
Max.
Units Notes & Conditions
TEMP LIMITS FOR POWER DERATING
Semiconductor Junction Temperature
All
125
°C
Board Temperature
All
125
°C
FEATURE CHARACTERISTICS
Switching Frequency
All
275
300
325
kHz
ON/OFF Control
Open Logic (O) ON/OFF Control
Off-State Voltage
All
1.56.5V
On-State Voltage
All
-3.0
0.6
V
Input Resistance
All
20
kW
Positive Logic (P) ON/OFF Control
Logic Low Voltage Range
All
-0.2
1.0V
Logic High Voltage Range (internal pullup)
All2.2 Vin
V
Pull-up Voltage
All
5
V
Pull-up Resistance
All
100
kW
Output Voltage Trim Range
All
0.75
5.5
V
Output Over-Voltage Protection
All
5.6
6.0
6.4
V
Over-Temperature Shutdown
All
128
°C
Over-Temperature Shutdown Restart HysteresisAll
10°C
RELIABILITY CHARACTERISTICS
Calculated MTBF (Telcordia)
All
15.6
106 Hrs.
Calculated MTBF (MIL-217)
All
10.0
106 Hrs.
Field Demonstrated MTBF
All
106 Hrs.
Package rated to 150°C
UL rated max operating temp 130°C
Half on small duty cycle (e.g. 16Vin; 0.75Vout)
See Figure A
Open collector/drain input; see Figure A
Measured Vout+ to common pins
Over full temp range
Average PCB Temperature
TR-NWT-000332; 100% load, 200LFM, 40oC Ta
MIL-HDBK-217F; 100% load, 200LFM, 40oC Ta
See our website for details
STANDARDS COMPLIANCE
Parameter
Notes & Conditions
STANDARDS COMPLIANCE
UL 60950-1:2007
EN60950-1/A11:2009/A1:2010
CAN/CSA-C22.2 No. 60950-1:2007
IEC 61000-4-2
Basic insulation
ESD test, 8 kV - NP, 15 kV air - NP (Normal Performance)
Note: An external input fuse must always be used to meet these safety requirements. Contact SynQor for official safety certificates on new
releases or download from the SynQor website.
QUALIFICATION TESTING
Parameter
QUALIFICATION TESTING
Life Test
Vibration
Mechanical Shock
Temperature Cycling
Power/Thermal Cycling
Design Marginality
Humidity
Solderability
# Units
32
5
5
10
5
5
5
15 pins
OPTIONS
Test Conditions
95% rated Vin and load, units at derating point, 1000 hours
10-55 Hz sweep, 0.060" total excursion, 1 min./sweep, 120 sweeps for 3 axis
100g minimum, 2 drops in x, y and z axis
-40 °C to 100 °C, unit temp. ramp 15 °C/min., 500 cycles
Toperating = min to max, Vin = min to max, full load, 100 cycles
Tmin-10 °C to Tmax+10 °C, 5 °C steps, Vin = min to max, 0-105% load
85 °C, 85% RH, 1000 hours, continuous Vin applied except 5 min/day
MIL-STD-883, method 2003
SynQor provides various options for Packaging, Enable Logic,
and Feature Set for this family of DC/DC converters. Please
consult the last page for information on available options.
Product # NQ16W50SMA16
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PATENTS
SynQor is protected under various patents. Please consult
page 12 for further details.
www.synqor.com
Doc.# 005-2NS12WE Rev. C
12/06/2011
Page 4
Input:
Outputs:
Current:
Package:
Technical Specification
Figure 1: Efficiency at nominal output voltage vs. load current for
nominal input voltage at 25°C.
6.0 - 16.0V
0.75 - 5.0V
16A
SMT
Figure 2: Power dissipation at nominal output voltage vs. load current
for nominal input voltage at 25°C.
Semiconductor junction temperature is
within 1°C of surface temperature
Figure 3: Maximum output power derating curves for 0.75Vo, 1.2Vo,
1.5Vo units under various thermal conditions and nominal input
voltage. See Thermal Considerations section for more details.
Figure 4: Thermal plot of 0.75Vo, 1.2Vo converters at nominal Vin and
16 amp load current mounted on a 85°C, 6-Layer, 2 oz. copper board
(typical installation).
Semiconductor junction temperature is
within 1°C of surface temperature
Figure 5: Maximum output power derating curves for 1.8Vo, 2.5Vo
units under various thermal conditions and nominal input voltage. See
Thermal Considerations section for more details.
Product # NQ16W50SMA16
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Figure 6: Thermal plot of 1.8Vo, 2.5Vo converters at nominal Vin and
16 amp load current mounted on a 70°C, 6-Layer, 2 oz. copper board
(typical installation).
www.synqor.com
Doc.# 005-2NS12WE Rev. C
12/06/2011
Page 5
Input:
Outputs:
Current:
Package:
Technical Specification
6.0 - 16.0V
0.75 - 5.0V
16A
SMT
Semiconductor junction temperature is
within 1°C of surface temperature
Figure 7: Maximum output power derating curves for 3.3Vo, 5.0Vo
units under various thermal conditions and nominal input voltage. See
Thermal Considerations section for more details.
Figure 8: Thermal plot of 3.3Vo, 5.0Vo converters at nominal Vin and
16 amp load current mounted on a 70°C, 6-Layer, 2 oz. copper board
(typical installation).
5.0Vout
5.0Vout
3.3Vout
3.3Vout
1.8Vout
1.8Vout
0.75Vout
0.75Vout
on/off
on/off
Figure 9: Turn-on transient at full load (resistive load) (2 ms/div).
Ch 1: ON/OFF input (5V/div)
Ch 2-4: Vout (1V/div)
Figure 10: Turn-on transient at zero load (2 ms/div).
Ch 1: ON/OFF input (5V/div)
Ch 2-4: Vout (1V/div)
5.0Vout
5.0Vout
2.5Vout
2.5Vout
1.5Vout
1.5Vout
Iout
Iout
Figure 11: Output voltage response for 1.5V, 2.5V, 5V units to step-change
in load current (50-75-50% of Iout max; di/dt=0.1A/µs). Load cap: 100µF,
100mW ESR tant, 10µF cer. Ch 1: Iout (10A/div), Ch 2-4: Vout (100mV/div).
Product # NQ16W50SMA16
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Figure 12: Output voltage response for 1.5V, 2.5V, 5V units to step-change in
load current (50-75-50% of Iout max; di/dt=3A/µs). Load cap: 470µF, 100mW
ESR tant, 10µF cer. Ch 1: Iout (10A/div), Ch 2-4: Vout (100mV/div).
www.synqor.com
Doc.# 005-2NS12WE Rev. C
12/06/2011
Page 6
Input:
Outputs:
Current:
Package:
Technical Specification
6.0 - 16.0V
0.75 - 5.0V
16A
SMT
See Fig. 14
1 µH
source
impedance
0.9Vout
See Fig. 15
See Fig. 16
iS
VIN
1.8Vout
DC/DC
Converter
VOUT
3.3Vout
VSOURCE
22 µF
C*
100 µF
ceramic 100mW ESR
capacitor
tantalum
capacitor
5.0Vout
Figure 13: Test set-up diagram showing measurement points for Input
Reflected Ripple Current (Figure 14), Input Terminal Ripple Voltage
(Figure 15), and Output Voltage Ripple (Figure 16).
Figure 14: Input Reflected Ripple Current, is, through a 1 µH source
inductor at nominal input voltage and rated load current (100 mA/div).
See Figure 13.
0.9Vout
0.9Vout
* See values for recommended external input
capacitance. Inductor optional as needed.
1.8Vout
1.8Vout
3.3Vout
3.3Vout
5.0Vout
5.0Vout
Figure 15: Input Terminal Ripple Voltage at nominal input voltage and
rated load current (200 mV/div). Load capacitance: 22µF ceramic cap
and 100µF tantalum cap. Bandwidth: 20 MHz. See Figure 13.
Figure 16: Output Voltage Ripple at nominal input voltage and rated
load current (50 mV/div). Load capacitance: 22µF ceramic cap and
100µF tantalum cap.. Bandwidth: 20 MHz. See Figure 13.
Figure 17: Magnitude of incremental output impedance (Zout = vout/
iout) for nominal input voltage at full rated power with 100µF tantalum
output capacitor.
Figure 18: Magnitude of incremental forward transmission (FT = vout/
vin) for nominal input voltage at full rated power with 100µF tantalum
output capacitor.
Product # NQ16W50SMA16
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Doc.# 005-2NS12WE Rev. C
12/06/2011
Page 7
Input:
Outputs:
Current:
Package:
Technical Specification
Figure 19: Magnitude of incremental reverse transmission (RT = iin/
iout) for nominal input voltage at full rated power with 100µF tantalum
output capacitor.
Product # NQ16W50SMA16
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6.0 - 16.0V
0.75 - 5.0V
16A
SMT
Figure 20: Magnitude of incremental input impedance (Zin = vin/iin)
for nominal input voltage at full rated power with 100µF tantalum
output capacitor.
www.synqor.com
Doc.# 005-2NS12WE Rev. C
12/06/2011
Page 8
Input:
Outputs:
Current:
Package:
Technical Specification
BASIC OPERATION AND FEATURES
The NiQor series non-isolated converter uses a buck-converter
that keeps the output voltage constant over variations in
line, load, and temperature. The NiQor modules employ
synchronous rectification for very high efficiency.
For a desired increase of the nominal output voltage, the
value of the resistor should be:
Rtrim=
up
CONTROL FEATURES
REMOTE ON/OFF: The ON/OFF input permits the user to
control when the converter is on or off. There are currently
two options available for the ON/OFF input described in the
table below. Others may become available if demand exists.
OUTPUT VOLTAGE TRIM: The TRIM input permits the user to
adjust the output voltage according to the trim range
specifications by using an external resistor. If the TRIM
feature is not being used, leave the TRIM pin disconnected.
TRIM-UP: To increase the output voltage from the nominal
setpoint of 0.7525V using an external resistor, connect
the resistor Rtrim-up between the TRIM and the Ground pin
according to the diagram below.
Vout
Sense+
Vin
On/Off
Gnd
Trim
Rtrim-up
10500
VDES - 0.7525
_ 1000
(W)
or
Dissipation throughout the converter is so low that it does
not require a heatsink or metal baseplate for operation. The
NiQor converter can thus be built more simply and reliably
using high yield surface mount techniques on a single PCB
substrate.
The NiQor series of SIPs and SMT converters uses the
established industry standard footprint and pin-out
configurations.
6.0 - 16.0V
0.75 - 5.0V
16A
SMT
VOUT = 0.7525 +
10500
Rtrim-up + 1000
(W)
where VDES = Desired Output Voltage
To maintain the accuracy of the output voltage over load
current, it is vital that any trim-up resistor be terminated
directly to the converter’s ground foot, not at the connection
to the load. A separate Kelvin connection to the PCB pad for
the ground foot is optimal. Trim-down resistors should be
terminated at the converter’s Sense+ pin.
We do not recommend bypassing the trim pin directly to
ground with a capacitor. The voltage gain from the trim
pin to output is rather large, 15:1. Ground bounce through
a bypass capacitor could introduce significant noise to the
converter’s control circuit.
PROTECTION FEATURES
Input Under-Voltage Lockout: The converter is designed to
turn off when the input voltage is too low, helping avoid an
input system instability problem, described in more detail in
the application note titled “Input System Instability”. The
lockout circuitry is a comparator with DC hysteresis. When
the input voltage is rising, it must exceed the typical TurnOn Voltage Threshold value (listed on the specification page)
before the converter will turn on. Once the converter is
on, the input voltage must fall below the typical Turn-Off
Voltage Threshold value before the converter will turn off.
Output Current Limiting: To provide protection in an output
over load fault condition, the unit is equipped with internal
over-current protection. When the over-current protection
is triggered, the unit enters hiccup mode. The units operate
normally once the fault condition is removed.
Internal Over-Voltage Protection: To fully protect from
excessive output voltage, the NQ16 series contains an Output
Over-Voltage Shutdown circuitry.
This OVP is independent of the trimmed setpoint. As such,
the converter’s load is protected from faults in the external
trim circuitry (such as a trim pin shorted to ground). Since
the setpoint of this OVP does not track trim, it is set at 6.0V,
in the wide-trim W50 model.
Product # NQ16W50SMA16
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www.synqor.com
Doc.# 005-2NS12WE Rev. C
12/06/2011
Page 9
Input:
Outputs:
Current:
Package:
Technical Specification
The shutdown point is fixed on standard option. SMA
also offers adjustable OVP set point. For more detailed
information contact SynQor technical support.
Over-Temperature Shutdown: A temperature sensor on the
converter senses the average temperature of the module.
The thermal shutdown circuit is designed to turn the
converter off when the temperature at the sensed location
reaches the Over-Temperature Shutdown value. It will allow
the converter to turn on again when the temperature of the
sensed location falls by the amount of the Over-Temperature
Shutdown Restart Hysteresis value.
6.0 - 16.0V
0.75 - 5.0V
16A
SMT
Output Capacitance: It is recommended to add at least 100µF
of capacitance, with an ESR in the 0.1W range, to the output
of the SMA16 series of converters. The VMA16 series has
this capacitance included internally. In many applications,
however, additional external output capacitance is required
to reduce the response to load transients to an allowable
level.
APPLICATION CONSIDERATIONS
Input Filtering/Capacitance/Damping: The filter circuit of
Figure E is often added to the converter’s input to prevent
switching noise from reaching the input voltage bus.
Figure F: Converter with Additional Output Capacitance
Thermal Performance (SMA16): While impossible to be exact,
a simplified thermal model for the mounted converter is
detailed below.
Figure E: NQ16 converter with Input Filter
In the SMA16 (surface mount) converters Cin = 30µF of high
quality ceramic capacitors. With Lin of 1µH, Cd should be
100-200µF and Rd should be 0.1-0.2W, in most applications.
For more information on designing the input filter and
choosing proper values, contact SynQor technical support.
Adding significant external pure ceramic capacitance directly
across the converter’s input pins is not recommended.
Parasitic inductance associated with the input pin geometry
and PCB traces can create a high-Q CLC circuit with any
external capacitors. Just a few nano-Henries of parasitic
inductance can create a resonance (or an overtone) near
the converter’s switching frequency. Cin has a reactance of
10-20mW at the 300kHz switching frequency. To avoid this
high-frequency resonance, any external input filter should
exhibit a net source impedance of at least 20mW resistive
through this frequency range. This requirement is easily met
with the damping elements discussed above. Adding a small
amount (a few µF) of high-frequency external ceramic will
not violate it.
If using converters at higher powers, consider the ripple
current rating of Cd. Contact SynQor technical support for
details.
Figure G: Thermal Model for NQ16 Surface Mount
• Rt_J-Pcb models the conduction of heat from the converter’s
hottest junction to the converter’s PCB at large. It is about
3oC/W for converters running at higher output voltage,
and about 4oC/W for lower voltage converters.
• Rt_Pcb-Amb models the power dissipation from converter
PCB to the air stream. It ranges from about 15oC/W at
400LFM to about 25oC/W 100LFM.
• Rt_Pcb-Feet expresses the thermal path from the converter’s
PCB though its mounting feet; it is about 3oC/W.
• Rt_spread models the heat spreading on the PCB to which
the converter is mounted and is largely dependent upon
the construction and layout of that PCB.
• T_mount is the temperature of that PCB in the greater
vicinity of the converter.
Product # NQ16W50SMA16
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www.synqor.com
Doc.# 005-2NS12WE Rev. C
12/06/2011
Page 10
Input:
Outputs:
Current:
Package:
Technical Specification
As is evident, the values for Rt_spread and T_mount will have
great effect upon the thermal operation of the converter.
With Rt_Pcb-Amb being 5 to 8 times as large as Rt_Pcb-Feet,
in most applications these converters will be predominantly
cooled via thermal conduction through their feet. Airflow
and T_Amb will have only a minimal cooling effect.
• Rt_spread should be minimized. Attach the converter to
large copper planes, on multiple layers, with multiple vias
near the mounting feet.
• T_mount should also be minimized. Place the converter
far enough away from other sources of heat on the PCB so
that it is as cool as practical.
• If operation near derating limits is even suspected, thermal
performance should be verified with the unit mounted
in its intended manner and powered in circuit with all
neighboring circuitry active. Attach a thermocouple to the
converter’s hotspot as shown in Figures 4, 6, and 8 in the
Performance Curves section.
SURFACE MOUNT INFORMATION
PCB Layout Considerations: SynQor recommends that the
customer use a non-solder mask defined pad design. The
minimum recommended pad size is 0.074” x 0.122” (1.88mm
x 3.1mm) and the maximum pad size is 0.095” x 0.140”
(2.41mm x 3.56mm), see the mechanical diagram on page
2. Interconnection to internal power planes is typically
required. This can be accomplished by placing a number
of vias between the SMT pad and the relevant plane. The
number and location of the vias should be determined based
on electrical resistance, current and thermal requirements.
“Via-in-pad” design should be avoided in the SMT pads.
Solder mask should be used to eliminate solder wicking into
the vias.
Pick and Place: The NiQor surface mount
modules are designed for automated
assembly using standard SMT pick and place
equipment. The modules have a centrally
located inductor component with a flat
surface area to be used for component pickup. The units use open frame construction
and have a low mass that is within the
capability of standard pick and place
equipment. Those modules however have
a larger mass than most conventional SMT
components and so variables such as nozzle
size, tip style, handling speed, and placement
pressure should be optimized for best results.
A conformal tipped placement nozzle design
is recommended. Coplanarity of better than
0.004” (0.1mm) is achieved through the SMT
NiQor’s terminal design.
6.0 - 16.0V
0.75 - 5.0V
16A
SMT
Reflow Soldering Guidelines: Figure H shows a typical
reflow profile for a eutectic solder process. Due to variations
in customer applications, materials and processes, it is
not feasible for SynQor to recommend a specific reflow
profile. The customer should use this profile as a guideline
only. Since the NiQor surface mount modules have a larger
thermal mass and lower thermal resistance than standard
SMT components, it may be necessary to optimize the solder
reflow profile based on limitations of the other components
on the customer board. Sufficient reflow time must be
allowed to fuse the plating on the connection to ensure a
reliable solder joint. The solder reflow profile should be
confirmed by accurately measuring the SMT interconnect
leads. Maximum case temperature of 260°C (exposure for 5
seconds or less) is not exceeded for the NiQor units.
Moisture Sensitivity: The NiQor surface mount modules
have an MSL rating 1 per IPC/JEDEC J-STD-033A.
Cleaning and Drying: When possible, a no-clean solder paste
system should be used to solder the NiQor SMT units to their
application board. The modules are suitable for aqueous
washing, however, the user must ensure sufficient drying to
remove all water from the converter before powering up.
Inadequate cleaning and drying can affect the reliability of
the converter and the testing of the final assembly.
RoHS Compliance: The EU led RoHS (Restriction of Hazardous
Substances) Directive bans the use of Lead, Cadmium,
Hexavalent Chromium, Mercury, Polybrominated Biphenyls
(PBB), and Polybrominated Diphenyl Ether (PBDE) in Electrical
and Electronic Equipment. This SynQor product is 6/6 RoHS
compliant. For more information please refer to SynQor’s
RoHS addendum available at our RoHS Compliance / Lead
Free Initiative web page or e-mail us at [email protected]
Maximum Temperature (+210-260oC)
Eutectic Solder Melting Point (+183oC)
(+150-155oC)
Pre-heat
•
Reflow
Soak
< 2.5oC/sec
•
0.5-0.6oC/sec
•
60 to 90 sec.,
typ., 2 min max
Cool Down
•
1.3-1.6oC/sec
•
30 to 60 sec., typ.,
90 sec max
2 to 4 min.
Figure H: Typical Eutectic (96.5Sn/3.0Ag/0.5Cu) Solder Profile
Product # NQ16W50SMA16
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2NS12WE Rev. C
12/06/2011
Page 11
Input:
Outputs:
Current:
Package:
Technical Specification
6.0 - 16.0V
0.75 - 5.0V
16A
SMT
PART NUMBERING SYSTEM
ORDERING INFORMATION
The part numbering system for SynQor’s NiQor DC/DC
converters follows the format shown in the example
below.
The tables below show the valid model numbers and ordering
options for converters in this product family. When ordering
SynQor converters, please ensure that you use the complete
15 character part number consisting of the 12 character base
part number and the additional 3 characters for options.
A “-G” suffix indicates the product is 6/6 RoHS compliant.
N Q 16 W 50 S MA 1 6 P S S -
G
6/6 RoHS
Options
(see Ordering Information)
Output Current
Thermal Design
Performance Level
The following option choices must be included in place of
the x y z spaces in the model numbers listed above.
Package Size
Output Voltage
Input Voltage
Product Family
The first 12 characters comprise the base part number and
the last 3 characters indicate available options. A “-G”
suffix indicates the product is 6/6 RoHS compliant.
Application Notes
A variety of application notes and technical white papers
can be downloaded in pdf format from our website.
PATENTS
SynQor holds the following U.S. patents, one or more of which apply to
each product listed in this document. Additional patent applications may
be pending or filed in the future.
5,999,417
6,222,742
6,545,890
6,577,109
6,594,159
6,731,520
6,894,468
6,896,526
6,927,987
7,050,309
7,072,190
7,085,146
7,119,524
7,269,034
7,272,021
7,272,023
7,558,083
7,564,702
7,765,687
7,787,261
8,023,290
Contact SynQor for further information:
Phone:978-849-0600
Toll Free:888-567-9596
Fax:978-849-0602
E-mail:[email protected]
Web:www.synqor.com
Address: 155 Swanson Road
Boxborough, MA 01719
USA
Product # NQ16W50SMA16
Phone 1-888-567-9596
Warranty
SynQor offers a three (3) year limited warranty. Complete
warranty information is listed on our website or is available upon
request from SynQor.
Information furnished by SynQor is believed to be accurate and
reliable. However, no responsibility is assumed by SynQor for
its use, nor for any infringements of patents or other rights of
third parties which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of
SynQor.
www.synqor.com
Doc.# 005-2NS12WE Rev. C
12/06/2011
Page 12
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