NQ03012HMA15NRN [SYNQOR]
15A Non-Isolated DC/DC Converter in SIP configuration; 在SIP配置15A非隔离式DC / DC转换器
| 型号： | NQ03012HMA15NRN |
| 厂家： | 
SYNQOR WORLDWIDE HEADQUARTERS |
| 描述： | 15A Non-Isolated DC/DC Converter in SIP configuration |
| 文件： | 总17页 (文件大小：1169K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Technical Specification
Non-Isolated
SIP Converter
3.0 - 3.6V
15A
in
15A Non-Isolated DC/DC Converter in SIP configuration
™
The NiQor SIP DC/DC converter is a non-isolated
buck regulator, which employs synchronous rectifi-
cation to achieve extremely high conversion effi-
Non-Isolated
ciency. 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 non-isolated NiQor converters are then used at
the point of load to create the low voltage outputs
required by the design. Typical applications include
telecom/datacom, industrial, medical, transportation,
NiQor vertical mount SIP module
data processing/storage and test equipment.
Operational Features
Mechanical Features
• Ultra-high efficiency, up to 93% full load, 95% half
• Industry standard SIP pin-out configuration
• Delivers 15 amps of output current with minimal der-
•Industry standard size: 2.0” x 0.55” x 0.29 (50.8 x
ating - no heatsink required
14 x 7.3mm)
• Input voltage range: 3.0 - 3.6V
• Total weight: 0.30 oz. (9.4 g), lower mass greatly
reduces vibration and shock problems
• Open frame construction maximizes air flow cooling
• Available in both vertical and horizontal mounting
• Fixed frequency switching provides predictable EMI
performance
• Fast transient response time
• On-board input and output filter capacitor
Control Features
• No minimum load requirement means no preload
resistors required
• On/Off control
• Output voltage trim (industry standard) permits
custom voltages and voltage margining
• Optional features include remote sense and wide
output voltage trim (0.85V - 2.75V)
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
Safety Features
• UL 1950 recognized (US & Canada)
• TUV certified to EN60950
• Output over-voltage protection protects load from
damaging voltages
• Meets 72/23/EEC and 93/68/EEC directives
• Thermal shutdown
which facilitates CE Marking in user’s end product
• Board and plastic components meet UL94V-0 flam-
mability requirements
Product # NQ03xxxVMA15
Phone 1-888-567-9596
Doc.# 005-2NV3xxE Rev. E
6/24/04
Page 1
Technical Specification
Non-Isolated
SIP Converter
3.0 - 3.6V
15A
in
MECHANICAL
DIAGRAM
Vertical Mount
Side View
Front View
0.288
(7.32)
2.00
(50.8)
0.315 Max
0.185
(4.7)
(8.0 Max)
0.197 Max
(5.0 Max)
0.550
(13.97)
Ref.
0.050
(1.27)
0.160
1
2
3
4
5
A
6
7
8
10 11
(4.06)
0.050
(1.27)
0.040 PCB Ref.
(1.02)
0.120
(3.05)
0.025 + 0.003
(0.64 + 0.076)
SQ. Typ.
0.000 0.100 0.200 0.300 0.400
1.300 1.400 1.500 1.600
(33.02) (35.56) (38.10) (40.64)
1.800 1.900
(0.00)
(2.54)
(5.08)
(7.62)
(10.16)
(45.72) (48.26)
NOTES
PIN DESIGNATIONS
1) All pins are 0.025” (0.64mm) +/- 0.003 (0.076mm) square.
2) All Pins: Material - Copper Alloy
Pin No. Name
Function
1
2
3
4
5
A
6
7
8
Vout(+)
Vout(+)
SENSE(+)
Vout(+)
Common
I share
Common
Vin(+)
Positive output voltage
Positive output voltage
Positive remote sense
Positive output voltage
Finish - Tin over Nickel plate
3) Vertical, horizontal, vertical with reverse pins and surface
mount options (future) available.
4) Undimensioned components are shown for visual
reference only.
6) All dimensions in inches (mm)
Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
7) Weight: 0.30 oz. (9.4 g) typical
Current share*
Positive input voltage
Positive input voltage1
Output voltage trim2
8) Workmanship: Meets or exceeds IPC-A-610C Class II
Vin(+)
TRIM
10
11
Pin Connection Notes:
ON/OFF
LOGIC input to turn the converter
on and off.
1. Pin 10 - for fixed resistors, connect between Trim and
Vout(+) to trim down or between Trim and Common
(Ground) to trim up.
Pins in Italics Shaded text are Optional
2. Pin 11 - see section on Remote ON/OFF pin for descrip-
tion of enable logic options.
* Contact factory for availability of current share modules.
Product # NQ03xxxVMA15
Phone 1-888-567-9596
Doc.# 005-2NV3xxE Rev. E
6/24/04
Page 2
Technical Specification
Non-Isolated
SIP Converter
3.0 - 3.6V
15A
in
MECHANICAL
DIAGRAM
Horizontal Mount
Front View
Side View
0.288
(7.32)
2.00
(50.8)
0.315 Max
0.185
(4.7)
(8.0 Max)
0.197 Max
(5.0 Max)
0.025 + 0.003
(0.64 + 0.076)
SQ. Typ.
0.550
(13.97)
Ref.
0.050
(1.27)
1
2
3
4
5
A
6
7
8
10 11
0.128 Min
0.050
(1.27)
0.040 PCB Ref.
(1.02)
(3.25 Min)
0.330
(8.38)
See note on Thermal
Considerations in
Applications section.
0.000 0.100 0.200 0.300 0.400
1.300 1.400 1.500 1.600
(33.02) (35.56) (38.10) (40.64)
1.800 1.900
(45.72) (48.26)
(0.00)
(2.54)
(5.08)
(7.62)
(10.16)
Vertical Mount
Reversed Pins
Front View
Side View
2.00
0.288
(7.32)
(50.8)
0.315 Max
0.185
(4.7)
(8.0 Max)
0.197 Max
(5.0 Max)
0.550
(13.97)
Ref.
0.050
(1.27)
1
2
3
4
5
A
6
7
8
10 11
0.160
(4.06)
0.050
(1.27)
0.040 PCB Ref.
(1.02)
0.120
(3.05)
0.025 + 0.003
(0.64 + 0.076)
SQ. Typ.
0.000 0.100 0.200 0.300 0.400
1.300 1.400 1.500 1.600
(33.02) (35.56) (38.10) (40.64)
1.800 1.900
0.058 +.008
(1.47 +.20)
(0.00)
(2.54)
(5.08)
(7.62)
(10.16)
(45.72) (48.26)
Product # NQ03xxxVMA15
Phone 1-888-567-9596
Doc.# 005-2NV3xxE Rev. E
6/24/04
Page 3
Technical Specification
Non-Isolated
SIP Converter
3.0 - 3.6V
15A
in
ELECTRICAL CHARACTERISTICS - NQ03xxxVMA15 Series
TA=25°C, airflow rate=300 LFM, Vin=3.3Vdc unless otherwise noted; full operating temperature range is -40°C to +105°C ambient tem-
perature with appropriate power derating. Specifications subject to change without notice.
Parameter
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Module
Min.
Typ.
Max.
Units Notes & Conditions
Non-Operating
Operating
All
All
All
All
All
All
5.0
4.5
5.0
105
125
6.5
V
V
V
°C
°C
V
continuous
continuous
100ms transient
3.0
Operating Transient Protection
Operating Temperature
Storage Temperature
Voltage at ON/OFF input pin
INPUT CHARACTERISTICS
Operating Input Voltage Range1
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Maximum Input Current2
-40
-55
-3
All
3.0
3.6
V
Notes on pg. 6
All
All
2.1
2.0
2.4
2.3
2.8
2.5
5.9
7.4
8.9
10.4
13.9
110
25
V
V
A
A
A
0.9V
1.2V
1.5V
1.8V
2.5V
All
100% Load, 3.0Vin, 0.9Vout
100% Load, 3.0Vin, 1.2Vout
100% Load, 3.0Vin, 1.5Vout
100% Load, 3.0Vin, 1.8Vout
100% Load, 3.0Vin, 2.5Vout
A
A
No-Load Input Current
Disabled Input Current
Inrush Current Transient Rating
Response to Input Transient
85
17
0.1
70
80
90
120
160
200
125
3
mA
mA
All
All
2
A s
0.9V
1.2V
1.5V
1.8V
2.5V
0.9-1.8V
2.5V
0.9-1.8V
2.5V
All
mV/V 50mV/
mV/V
mV/V
mV/V
mV/V
mA
mA
A
A
A
µs input transient (all)
Input Reflected-Ripple Current
Input Terminal Ripple Current
pk-pk thru 1µH inductor, with 200µF
tantalum; full load; Figs 24, 26
RMS with 200µF tantalum and
Figs 24, 26
fast blow external fuse recommended
internal ceramic
net 50mΩ
1µH;
2
Recommended Input Fuse
20
Input Filter Capacitor Value
All
All
40
200
µF
µF
Recommended External Input Capacitance3
OUTPUT CHARACTERISTICS
Output Voltage Set Point7 (50% load)
0.9V
1.2V
1.5V
1.8V
2.5V
0.885
1.180
1.475
1.769
2.458
0.900
1.200
1.500
1.800
2.500
0.917
1.223
1.529
1.834
2.548
V
V
V
V
V
also applies to wide-trim (0.85-2.75V) unit
Output Voltage Regulation
Over Line
+
+
+
All
0.1
0.5
0.3
%
%
%
%
V
V
V
V
V
Over Load
0.9V
2.5V
All
0.9V
1.2V
1.5V
1.8V
2.5V
with sense pin
with sense pin
Over Temperature
Total Output Voltage Range
+2.0
0.865
1.153
1.441
1.729
2.402
0.944
1.258
1.573
1.888
2.622
with sense pin, over sample, line, load,
temperature & life (all)
Product # NQ03xxxVMA15
Phone 1-888-567-9596
Doc.# 005-2NV3xxE Rev. E
6/24/04
Page 4
Technical Specification
Non-Isolated
SIP Converter
3.0 - 3.6V
15A
in
ELECTRICAL CHARACTERISTICS (continued) - NQ03xxxVMA15 Series
Parameter
ModuleP Min.
Typ.
Max.
Units Notes & Conditions
OUTPUT CHARACTERISTICS (cont.)
Output Voltage Ripple and Noise
Peak-to-Peak
20MHz bandwidth; Fig 24, 27
All
All
15
6
35
12
15
40
4,000
mV
mV
A
Full Load
Full Load
RMS
Operating Output Current Range
Output DC Over-Current Shutdown4
Maximum Output Capacitance5,6
DYNAMIC CHARACTERISTICS
Input Voltage Ripple Rejection
All
All
All
0
16
25
A
µF
Derate startup load current per Fig. 23
120 Hz; Figure 31
0.9V
2.5V
45
37
dB
dB
Output Voltage during Load Current Transient
For a Step Change in Output Current (0.1A/µs)
For a Step Change in Output Current (5A/µs)
Settling Time
All
All
All
40
70
50
mV
mV
µs
50%-75%-50% Iout max, 10µF, Fig 15-16
50%-75%-50% Iout max, 470µF, Fig 17-18
to within 1.5% Vout nom., Fig 15-18
Load current & capacitance per Fig. 23
Enable to Vout=100% nom., Figs 19-20
Enable to 10%, Fig. 21
Turn-On Transient
Turn-On Time
Start-Up Delay Time
All
5.5
2.9
1.6
1.6
2.5
6.8
4.1
2.7
2.4
3.7
8.5
6.1
4.6
3.9
5.6
0
ms
ms
ms
ms
ms
%
0.9V
2.5V
0.9V
2.5V
All
Start-Up Rise Time
10% to 90%, Fig. 22
Resistive load up to 4,000µF
Figures 1-4
Output Voltage Overshoot
EFFICIENCY
100% Load
0.9V
1.2V
1.5V
1.8V
2.5V
0.9V
1.2V
1.5V
1.8V
2.5V
83.5
87
89
90.5
93
88
90.5
92
93
%
%
%
%
%
%
%
%
%
%
50% Load
Figures 1-4
95
TEMP. LIMITS FOR POWER DERATING
Semiconductor Junction Temperature7
Board Temperature7
All
All
125
125
°C
°C
Package rated to 150°C; Figs 5-14
UL rated max operating temp 130°C
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control
All
265
300
Vin
330
kHz
may decrease by up to 30 kHz at -40°C
Figure A
Off-State Voltage
On-State Voltage
All
All
All
1.5
-3
6.5
0.6
V
V
V
%
%
%
%
°C
°C
Pull-Up Voltage
Output Voltage Trim Range1,8
0.9V
1.2-2.5V
All
-5
-10
+10
+10
+10
145
Measured Vout+ to common pins; Table 1
Output Voltage Remote Sense Range1,9
Output Over-Voltage Protection10
Over-Temperature Shutdown
Over-Temperature Shutdown Restart Hysteresis
RELIABILITY CHARACTERISTICS
Calculated MTBF (Telcordia)
Measured Vout+ to common pins
Over full temp range; % of nominal Vout
Average PCB Temperature
All
All
All
113
130
120
5
6
o
All
All
All
TBD
8.0
10 Hrs. TR-NWT-000332; 100% load, 200LFM, 40 C T
a
a
6
o
Calculated MTBF (MIL-217)
Field Demonstrated MTBF
10 Hrs. MIL-HDBK-217F; 100% load, 200LFM, 40 C T
6
10 Hrs. See website for latest values
Product # NQ03xxxVMA15
Phone 1-888-567-9596
Doc.# 005-2NV3xxE Rev. E
6/24/04
Page 5
Technical Specification
Non-Isolated
SIP Converter
3.0 - 3.6V
15A
in
ELECTRICAL CHARACTERISTICS (continued) - NQ03xxxVMA15 Series
NOTES
Note 1: Maintain a minimum of 0.35V headroom between input and output voltage to meet performance specifications.
Note 2: Wide trim option unit will perform as the model with the output voltage that it is trimmed to. Applies to all specifcations where values differ by Vout.
Note 3: Tantalum or similar with additional ceramic as needed to reduce ripple current in external capacitors. See Figure 21. Output capacitance of
<1000µF. Additional input capacitance equal to half of the output capacitance is recommended when more than 1000µF of output capacitance is used.
Consult factory for more demanding applications. Also refer to Application Considerations section of this datasheet.
Note 4: The over-current shutdown threshold for a short over-current pulse can be as high as 50A when trimming up a wide trim unit above 1.2V.
Note 5: Larger input capacitance of at least half of the output capacitance is recommended when using >1000µF on a 2.5V output.
Note 6: When trimming the output voltage to less than 0.88V with more than 1000µF of output capacitance, consult factory for trim circuit recommendations.
Note 7: Power derating curves are measured using an evaluation board consisting of 6 layers of 2 ounce copper.
Note 8: Wide trim option unit has a setpoint of 0.9V and a trim range of 0.85V-2.75V.
Note 9: In remote sense applications, when trimming down, the trim-down resistor should be connected to the sense pin for more accurate trimming results.
Note 10: Indicates worst case specification for 0.9V unit. Higher output voltage units have a tighter specification range. The wide-trim unit carries the OVP
set point of a 2.5Vout unit, which has a worst-case maximum OVP trip level of 135%.
STANDARDS COMPLIANCE
Parameter
P
Notes
STANDARDS COMPLIANCE
UL/cUL 60950
File # E194341
Certified by TUV
EN60950
72/23/EEC
93/68/EEC
Needle Flame Test (IEC 695-2-2)
IEC 61000-4-2
test on entire assembly; board & plastic components UL94V-0 compliant
ESD test, 8kV - NP, 15kV air - NP (Normal Performance)
GR-1089-CORE
Section 7 - electrical safety, Section 9 - bonding/grounding
Telcordia (Bellcore) GR-513
•
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
P
# Units Test Conditions
QUALIFICATION TESTING
Life Test
32
95% rated Vin and load, units at derating point, 1000 hours
Vibration
5
10-55Hz sweep, 0.060” total excursion,1 min./sweep, 120 sweeps for 3 axis
100g minimum, 2 drops in x and y axis, 1 drop in 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 5min./day
MIL-STD-883, method 2003
Mechanical Shock
Temperature Cycling
Power/Thermal Cycling
Design Marginality
Humidity
5
10
5
5
5
Solderability
15 pins
•
Extensive characterization testing of all SynQor products and manufacturing processes is performed to ensure that we supply
robust, reliable product. Contact factory for official product family qualification document.
OPTIONS
PATENTS
SynQor provides various options for Packaging, Enable Logic, Pin SynQor is protected under various patents, including but not lim-
Length and Feature Set for this family of DC/DC converters. ited to U.S. Patent numbers: 5,999,417; 6,222,742 B1;
Please consult the last page of this specification sheet for infor- 6,594,159 B2; 6,545,890 B2.
mation on available options.
Product # NQ03xxxVMA15
Phone 1-888-567-9596
Doc.# 005-2NV3xxE Rev. E
6/24/04
Page 6
Performance Curves
Non-Isolated
3.0 - 3.6V
15A
SIP Converter
in
100
95
90
85
80
75
70
65
94
93
92
91
90
89
88
87
2.5 Vo
1.8 Vo
1.5 Vo
1.2 Vo
0.9 Vo
25 C
40 C
55 C
86
0
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
100
200
300
400
500
Load Current (A)
Air Flow (LFM)
Figure 1: Efficiency at nominal output voltage vs. load current for all
Figure 2: Efficiency at 1.5Vout and 60% rated power vs. airflow rate
modules at 25
°
C and nominal input voltage.
for ambient air temperatures of 25
voltage).
°C, 40
°
C, and 55
°
C (nominal input
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
2.5
2.0
1.5
1.0
0.5
0.0
2.5 Vo
1.8 Vo
1.5 Vo
1.2 Vo
0.9 Vo
25 C
40 C
55 C
0
100
200
300
400
500
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
Air Flow (LFM)
Load Current (A)
Figure 3: Power dissipation at nominal output voltage vs. load current
Figure 4: Power dissipation at 1.5Vout and 60% rated power vs. air-
for all modules at 25
°
C and nominal input voltage.
flow rate for ambient air temperatures of 25
nal input voltage).
°C, 40°C, and 55°C (nomi-
16
14
12
10
8
6
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
50 LFM (0.25 m/s)
4
2
0
Semiconductor junction temperature is
within 1 C of surface temperature
°
0
25
40
55
70
85
Ambient Air Temperature (oC)
Figure 5: Maximum output power derating curves vs. ambient air tem-
perature for 0.9Vout unit. Airflow rates of 50 LFM - 400 LFM with air
flowing across the converter from pin 11 to pin 1 (Vin nom, vert mount).
Figure 6: Thermal plot of 0.9V converter at 15 amp load current with
55 C air flowing at the rate of 200 LFM. Air is flowing across the con-
verter sideways from pin 11 to pin 1 (Vin nom, vert mount).
°
Product # NQ03xxxVMA15
Phone 1-888-567-9596
Doc.# 005-2NV3xxE Rev. E 6/24/04
Page 7
Performance Curves
Non-Isolated
3.0 - 3.6V
15A
SIP Converter
in
16
14
12
10
8
6
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
50 LFM (0.25 m/s)
4
2
0
Semiconductor junction temperature is
within 1 C of surface temperature
0
25
40
55
70
85
°
Ambient Air Temperature (oC)
Figure 7: Maximum output power derating curves vs. ambient air tem-
perature for 1.2Vout unit. Airflow rates of 50 LFM - 400 LFM with air
flowing across the converter from pin 11 to pin 1 (Vin nom, vert mount).
Figure 8: Thermal plot of 1.2V converter at 15 amp load current with
55°C air flowing at the rate of 200 LFM. Air is flowing across the con-
verter sideways from pin 11 to pin 1 (Vin nom, vert mount).
16
14
12
10
8
6
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
4
100 LFM (0.5 m/s)
50 LFM (0.25 m/s)
2
0
Semiconductor junction temperature is
within 1°C of surface temperature
0
25
40
55
70
85
Ambient Air Temperature (oC)
Figure 9: Maximum output power derating curves vs. ambient air tem-
perature for 1.5Vout unit. Airflow rates of 50 LFM - 400 LFM with air
flowing across the converter from pin 11 to pin 1 (Vin nom, vert mount).
Figure 10: Thermal plot of 1.5V converter at 15 amp load current with
55°C air flowing at the rate of 200 LFM. Air is flowing across the con-
verter sideways from pin 11 to pin 1 (Vin nom, vert mount).
16
14
12
10
8
6
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
50 LFM (0.25 m/s)
4
2
0
0
25
40
55
70
85
Semiconductor junction temperature is
Ambient Air Temperature (oC)
within 1°C of surface temperature
Figure 11: Maximum output power derating curves vs. ambient air tem-
perature for 1.8Vout unit. Airflow rates of 50 LFM - 400 LFM with air
flowing across the converter from pin 11 to pin 1 (Vin nom, vert mount).
Figure 12: Thermal plot of 1.8V converter at 15 amp load current with
55 C air flowing at the rate of 200 LFM. Air is flowing across the con-
verter sideways from pin 11 to pin 1 (Vin nom, vert mount).
°
Product # NQ03xxxVMA15
Phone 1-888-567-9596
Doc.# 005-2NV3xxE Rev. E 6/24/04
Page 8
Performance Curves
Non-Isolated
3.0 - 3.6V
15A
SIP Converter
in
16
14
12
10
8
6
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
50 LFM (0.25 m/s)
4
2
0
Semiconductor junction temperature is
within 1 C of surface temperature
0
25
40
55
70
85
°
Ambient Air Temperature (oC)
Figure 13: Maximum output power derating curves vs. ambient air tem-
perature for 2.5Vout unit. Airflow rates of 50 LFM - 400 LFM with air
flowing across the converter from pin 11 to pin 1 (Vin nom, vert mount).
Figure 14: Thermal plot of 2.5V converter at 15 amp load current with
55°C air flowing at the rate of 200 LFM. Air is flowing across the con-
verter sideways from pin 11 to pin 1 (Vin nom, vert mount).
Figure 15: Output voltage response for 0.9V unit to step-change in load
Figure 16: Output voltage response for 2.5V unit to step-change in load
current (50-75-50% of Iout max; di/dt=0.1A/
µ
s). Load cap: 10
µ
F, 100m
Ω
current (50-75-50% of Iout max; di/dt=0.1A/µs). Load cap: 10µF, 100mΩ
ESR tantalum and 1
µF ceramic. Ch 1: Vout (50mV/div), Ch 2: Iout (5A/div).
ESR tantalum and 1µF ceramic. Ch 1: Vout (50mV/div), Ch 2: Iout (5A/div).
Figure 17: Output voltage response for 0.9V unit to step-change in load
current (50-75-50% of Iout max; di/dt=5A/ s). Load cap: 470 F, 25m
ESR tantalum and 1 F ceramic. Ch 1: Vout (50mV/div), Ch 2: Iout (5A/div).
Figure 18: Output voltage response for 2.5V unit to step-change in load
current (50-75-50% of Iout max; di/dt=5A/ s). Load cap: 470 F, 25m
ESR tantalum and 1 F ceramic. Ch 1: Vout (50mV/div), Ch 2: Iout (5A/div).
µ
µ
Ω
µ
µ
Ω
µ
µ
Product # NQ03xxxVMA15 Phone 1-888-567-9596
Doc.# 005-2NV3xxE Rev. E 6/24/04 Page 9
Performance Curves
Non-Isolated
3.0 - 3.6V
15A
SIP Converter
in
2.5Vout
2.5Vout
1.8Vout
1.5Vout
1.2Vout
0.9Vout
1.8Vout
1.5Vout
1.2Vout
0.9Vout
Figure 19: Turn-on transient at full load (resistive load) (2 ms/div).
Figure 20: Turn-on transient at zero load (2 ms/div).
Ch 1: ON/OFF input (2V/div)
Ch 1: ON/OFF input (2V/div)
Ch 2-6: Vout (1V/div)
Ch 2-6: Vout (1V/div)
7
6
5
4
3
2
7
6
5
4
3
2
1
0
Max Delay Time
Min Delay Time
Max Rise Time
Min Rise Time
1
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Output Voltage (V)
Output Voltage (V)
Figure 21: Minimum and Maximum Startup Delay Time (enable to
Figure 22: Minimum and Maximum Startup Rise Time (10% to 90%)
10%) over temperature versus output voltage (includes trimming).
over temperature versus output voltage (includes trimming).
14.0
12.0
10.0
8.0
0.9V
1.0V
1.2V
1.5V
1.8V
2.5V
6.0
4.0
2.0
0.0
0
500
1000
1500
2000
2500
3000
3500
4000
Load Capacitance (uF)
Figure 23: Maximum Startup Load Current versus Load Capacitance.
Derate the load during startup according to this figure to avoid the pos-
sibility of over-current shutdown.
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Page 10
Performance Curves
Non-Isolated
3.0 - 3.6V
15A
SIP Converter
in
See Fig. 23
1 µH
See Fig. 22
source
0.9Vout
impedance
See Fig. 24
iS
1.2Vout
1.5Vout
iC
DC/DC
Converter
VOUT
1.8Vout
2.5Vout
VSOURCE
15
µ
Ω
F,
ESR
10 µF
C*
ceramic
100m
capacitor
tantalum
capacitor
* See values for recommended external input capacitance.
Inductor optional as needed.
Figure 24: Test set-up diagram showing measurement points for Input
Terminal Ripple Current (Figure 25), Input Reflected Ripple Current
(Figure 26) and Output Voltage Ripple (Figure 27).
Figure 25: Input Terminal Ripple Current, i , at full rated output cur-
c
rent and nominal input voltage with 1
µH source impedance and 200µF
tantalum capacitor (5A/div). See Figure 24.
0.9Vout
1.2Vout
0.9Vout
1.5Vout
1.2Vout
1.5Vout
1.8Vout
2.5Vout
1.8Vout
2.5Vout
Figure 26: Input Reflected Ripple Current, i , through a 1
µH source
Figure 27: Output Voltage Ripple at nominal input voltage and rated
load current (10 mV/div). Load capacitance: 10 F ceramic capacitor
and 15 F tantalum capacitor. Bandwidth: 20 MHz. See Figure 24.
s
inductor at nominal input voltage and rated load current (100 mA/div).
See Figure 24.
µ
µ
Figure 28: Load current (5A/div) as a function of time when 0.9V con-
Figure 29: Load current (5A/div) as a function of time when 2.5V con-
verter attempts to turn on into a 10 m short circuit. Top trace
(10ms/div) is an expansion of the on-time portion of the bottom trace.
verter attempts to turn on into a 10 m
Ω
short circuit. Top trace
Ω
(10ms/div) is an expansion of the on-time portion of the bottom trace.
Product # NQ03xxxVMA15 Phone 1-888-567-9596
Doc.# 005-2NV3xxE Rev. E 6/24/04 Page 11
Performance Curves
Non-Isolated
3.0 - 3.6V
15A
SIP Converter
in
0.1
0.01
-10
-15
-20
-25
-30
-35
-40
-45
-50
-55
0.9 V
1.2 V
1.5 V
1.8 V
2.5 V
0.9 V
1.2 V
1.5 V
1.8 V
2.5 V
0.001
0.0001
-60
10
100
1,000
Hz
10,000
100,000
10
100
1,000
Hz
10,000
100,000
Figure 30: Magnitude of incremental output impedance (Z
=
Figure 31: Magnitude of incremental forward transmission (FT =
v /v ) for nominal input voltage at full rated power.
out in
out
v
/i ) for nominal input voltage at full rated power.
out out
25
20
15
10
5
1
0.9 V
1.2 V
1.5 V
1.8 V
2.5 V
0.9 V
1.2 V
1.5 V
1.8 V
2.5 V
0
0.1
-5
-10
-15
-20
-25
0.01
10
100
1,000
Hz
10,000
100,000
10
100
1,000
Hz
10,000
100,000
Figure 32: Magnitude of incremental reverse transmission (RT =
/i ) for nominal input voltage at full rated power.
Figure 33: Magnitude of incremental input impedance (Z = v /i
in in in
)
i
for nominal input voltage at full rated power.
in out
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6/24/04
Page 12
Technical Specification
Non-Isolated
SIP Converter
3.0 - 3.6V
15A
in
nal resistor, connect the resistor Rtrim-down between Pin 10 (TRIM)
and the Vout pins or the SENSE pin. For a desired decrease of
the nominal output voltage, the value of the resistor should be:
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 synchro-
nous rectification for very high efficiency.
_
VOUT 0.80
_
=
_
Rtrim-down
1
x 30100
(Ω)
Rbuffer
[( ) ]
∆
VOUT
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.
where
VOUT = Nominal Output Voltage
OUT = Nominal VOUT - Desired VOUT
∆
V
R
buffer = defined in Table 1 below
(value internal to the module)
The NiQor series of SIPs and SMT converters uses the estab-
lished industry standard footprint and pin-out configurations.
Vout, set Rbuffer
Note: wide trim unit has trim
range from 0.85-2.75V. Nominal
voltage is 0.9V. Use Rbuffer value
3.3 V
2.5 V
1.8 V
1.5 V
1.2 V
0.9 V
59 kΩ
78.7 kΩ
100 kΩ
100 kΩ
59 kΩ
CONTROL FEATURES
of 5.11kΩ. when trimming.
REMOTE ON/OFF (Pin 11): The ON/OFF input, Pin 11,
permits the user to control when the converter is on or off. There
are currently two options available for the ON/OFF input as
described in the table below. Other options may be added
based on user demand.
5.11 kΩ
Table 1: Rbuffer values for NiQor trim equation
For example, to trim-down the output voltage of a 1.8V module
by 5% to 1.71V, the Rtrim-down resistor value is calculated as fol-
lows:
Pin-Open
Option
Description Converter state
Pin Action
Pull Low = On
Pull High = Off
VOUT = 1.8V
N Logic Negative
Off
On
∆
V
OUT = 1.8V - 1.71V = 0.09V
buffer = 100
Rtrim-down = [((1.8 - 0.8)/0.09 -1) x 30100] - 100000 = 204.34
O Logic Negative/Open
R
kΩ
Figure A is a schematic view of the internal ON/OFF circuitry.
Vin
kΩ
TRIM-UP: To increase the output voltage using an external
resistor, connect the resistor Rtrim-up between Pin 10 (TRIM) and
the Common Ground Pins. For a desired increase of the nom-
inal output voltage, the value of the resistor should be:
(N logic only)
10K
PWM
Enable
ON/OFF
20K
24080
_
=
Rtrim-up
(Ω)
Rbuffer
∆
VOUT
20K
where
∆
VOUT = Nominal VOUT - Desired VOUT
Negative
Logic (N,O)
R
buffer = defined in Table 1
For example, to trim-up the output voltage of a 2.5V module by
10% to 2.75V, the Rtrim-up resistor value is calculated as follows:
Figure A: Schematic view of the internal ON/OFF circuitry
∆
V
OUT = 2.5V - 2.75V = 0.25V
buffer = 78.7
Rtrim-up = (24080/0.25) - 78700 = 17.62
OUTPUT VOLTAGE TRIM (Pin 10): The TRIM input permits
the user to adjust the output voltage up or down according to
the trim range specifications by using an external resistor or a
voltage source. If the TRIM feature is not being used, leave the
TRIM pin disconnected.
R
kΩ
kΩ
Note: the TRIM feature does not affect the voltage at which the
output over-voltage protection circuit is triggered. Trimming the
TRIM-DOWN: To decrease the output voltage using an exter-
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6/24/04
Page 13
Technical Specification
Non-Isolated
SIP Converter
3.0 - 3.6V
15A
in
output voltage too high may cause the over-voltage protection
circuit to engage, particularly during transients.
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.
Total DC Variation of Vout: For the converter to meet its
specifications, the maximum variation of the DC value of Vout,
due to both trimming and remote load voltage drops, should
not be greater than that specified for the output voltage trim
range.
PROTECTION FEATURES
APPLICATION CONSIDERATIONS
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 cir-
cuitry is a comparator with DC hysteresis. When the input volt-
age is rising, it must exceed the typical Turn-On Voltage
Threshold value (listed on the specification page) before the
converter will turn on. Once the converter is on, the input volt-
age must fall below the typical Turn-Off Voltage Threshold value
before the converter will turn off.
Input and Output Filtering: SynQor recommends an exter-
nal input capacitor of either a tantalum, polymer or aluminum
electrolytic type on the input of the NQ03/NQ04 series non-
isolated converters. This capacitance and resistance primarily
provides damping of the input filter, reduces the source imped-
ance and guarantees input stability (see SynQor application
note "Input System Instability"). The input filter is formed by any
source or wiring inductance and the converter’s input capaci-
tance. The external capacitance also provides an additional
benefit of ripple voltage reduction.
Over Current Shutdown: The converter uses the control
(high-side) MOSFET on-resistance to detect short circuit or
excessive over-current conditions. The converter compensates
for the temperature variation of the MOSFET on-resistance,
keeping the overcurrent threshold roughly constant over tem-
perature. Very short (<1mS) over-current pulses will see a
slightly higher apparent threshold than longer duration over-
current events. This makes the converter less susceptible to
shutdown from transient load conditions. However, once the
over-current threshold is reached the converter ceases PWM
operation within microseconds. After an over-current shut-
down, the converter will remain off for an inhibit period of 18
to 32 milliseconds, and then attempt a soft-start. Depending on
the impedance or current level of the overload condition, the
converter will enter a "hiccup mode" where it repeatedly turns
on and off at a frequency of 25 to 50 Hz, until the overload or
short circuit condition is removed.
A modest sized capacitor would suffice in most conditions, such
as a 330µF, 16V tantalum, with an ESR of approximately 50
mΩ. The NiQor family converters have an internal ceramic
input capacitor to reduce ripple current stress on the external
capacitors. An external ceramic capacitor of similar size
(330µF) with a series resistor of approximately 50 mΩ would
also suffice and would provide the filter damping.
Additional ceramic capacitance may be needed on the input,
in parallel with the tantalum capacitor, to relieve ripple current
stress on the tantalum capacitors. The external capacitance
forms a current divider with the 40
tance. At 300 kHz., the impedance of the internal capacitance
is about 15mΩ capacitive. At that frequency, an SMT 330
µF internal ceramic capaci-
µF
tantalum capacitor would have an impedance of about 50mΩ
resistive, essentially just the ESR.
In this example, at full load, that would stress the tantalum input
capacitor to about 3A rms ripple current, possibly beyond its
rating. Placing an additional 40µF of ceramic in parallel with
Output Over-Voltage Limit: If the voltage across the output
pins exceeds the Output Over-Voltage Protection threshold, the
converter will immediately stop switching. This prevents dam-
age to the load circuit due to 1) excessive series resistance in
output current path from converter output pins to sense point, 2)
a release of a short-circuit condition, or 3) a release of a cur-
rent limit condition. Load capacitance determines exactly how
high the output voltage will rise in response to these conditions.
After 2-4 ms, the converter will automatically restart. Note the
wide trim model uses the OVP threshold of the 2.5V unit.
that capacitor would reduce the ripple current to about 1.5A,
o
probably within its rating at 85 C. The input ripple current is
proportional to load current, so this example should be scaled
down according to the actual load current.
Additional input capacitance equal to half of the output capac-
itance is recommended when operating with more than 1000uF
of output capacitance on a 1.5V or higher output voltage, or
on lower voltage outputs when trimming down by more than
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6/24/04
Page 14
Technical Specification
Non-Isolated
SIP Converter
3.0 - 3.6V
15A
in
half of the trim-down allowance (e.g., further than -2.5% on a
0.9V, or -5% on a 1.2V).
denly. This can be caused by either a shutdown of the NiQor
from a fault or from the load itself, for example when a card is
hot-swapped out, suddenly dropping the load to zero. This is
further justification for keeping the source inductance low, as
mentioned above. When the power source is configured with
remote sensing, the series resistance of the filter inductor and
any other conductors or devices between the source and the
sense point will result in a voltage drop which, in the event of
a load current interruption, would add to the NiQor input volt-
age.
If no inductor is used to isolate the input ripple of the NiQor
converters from the source or from inputs of other NiQor con-
verters, then this external capacitance might be provided by the
DC/DC converter used as the power source. SynQor's
PowerQor series converters typically have tantalum and ceram-
ic output capacitors that would provide the damping.
An input inductor would help isolate the ripple currents and
voltages from the source or other NiQor style converters on the
voltage supply rail. If an input inductor is used, the recom-
mended capacitance should guarantee stability and control the
ripple current for up to 1.0µH of input inductance.
A TVS device could also be used to clamp the voltage level dur-
ing these conditions, but the relatively narrow range between
operating voltage and the absolute maximum voltage restrict
the use of these devices to lower source current levels that will
not drive the transient voltage suppressor above the voltage
limit when all the source current is flowing into the clamp. A
TVS would be a good supplemental control, in addition to care-
ful selection of inductance and capacitance values.
The input inductor need not have very high inductance.
A
value of 500 nanohenries would equate to almost one ohm of
series impedance at the switching frequency of 300 kHz. This
would be working against an assumed capacitive ESR of 30mΩ
on the supply side of the inductor, providing significant isola-
tion and ripple reduction.
Equivalent Model for Input Ripple: A simple but reason-
ably accurate model of input ripple is to treat the NiQor input
as a pulsed AC current source at 300 kHz.in parallel with a
very low ESR capacitor, see Figure B. The peak-to-peak current
of the source model is equal to the NiQor load current, repre-
senting the peak current in the NiQor's smoothing choke. The
capacitor represents the 40µF input ceramic capacitance of the
NiQor converter, with a nearly negligible ESR of less than 1
mΩ. A further refinement can be made by setting the duty cycle
of the pulsed source to the output voltage divided by the input
voltage.
No external capacitance is required at the output, however, the
ripple voltage can be further reduced if ceramic and tantalum
capacitors are added at the output. Since the internal output
capacitance is about 50µF, approximately that amount of
capacitance would be needed to produce a noticeable reduc-
tion in output ripple. The value of the tantalum capacitors is
both to provide a high capacitance for pulsed loads and to pro-
vide damping of the distribution network with their inherent
ESR, which is low, but higher than ceramics. Additional output
capacitance in the range of 300-500µF is beneficial for reduc-
ing the deviation in response to a fast load transient.
The only error in this simplified model is that it ignores the
inductive current in the choke, usually less than 20% of the load
current, and it ignores the resistive losses inside the NiQor con-
verter, which would alter the duty cycle very slightly.
Input Over-Voltage Prevention: The power system
designer must take precautions to prevent damaging the NiQor
converters by input overvoltage. This is another reason to be
careful about damping the input filter so that no ringing occurs
from an underdamped filter. The voltage must be prevented
from exceeding the absolute maximum voltage indicated in the
Electrical Specifications section of the data sheet under all con-
ditions of turn-on, turn-off and load transients and fault condi-
tions. The power source should have an over voltage shutdown
threshold as close as reasonably possible to the operating
point.
The model is a good guide for calculating the effects of exter-
nal input capacitors and other filter elements on ripple voltage
and ripple current stress on capacitors.
40
µF
INPUT
I
<1mΩ
p-p
Additional protection can come from additional input capaci-
tance, perhaps on the order of 1,000µF, but contingent on the
I
= I
Load
p-p
source inductance value. A large source inductance would
require more capacitance to keep the input voltage below the
absolute maximum, if the load current were interrupted sud-
Figure B: Equivalent model for input ripple
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6/24/04
Page 15
Technical Specification
Non-Isolated
SIP Converter
3.0 - 3.6V
15A
in
High Capacitance Loads with Backdrive: When using
two or more NiQor converters with high capacitance loads
(greater than 1,000µF), special consideration must be given to
wide output voltage trim range NiQor module at a later date.
Any trim resistor should connect to the ground or output node
at one of the respective pins of the NiQor, so as to prevent the
trim level from being affected by load drops through the ground
or power planes.
the following condition. If a back-drive source is feeding volt-
age back to a NiQor output, perhaps through some ASIC or
other load device, and the back-driving source is greater than
60% of the input voltage to the NiQor that has not been
enabled yet, an overcurrent condition may exist on startup. This
condition could prevent a proper startup when the second
NiQor is enabled. The condition is caused by the second
NiQor having to ramp the voltage to a high duty cycle with a
high capacitance load, which can trip the overcurrent shut-
down, preventing a startup. The following remedies for this sit-
uation can be applied:
OPTIONAL FEATURES
REMOTE SENSE(+) (Pin
3 - Optional): The optional
SENSE(+) input corrects for voltage drops along the conductors
that connect the converter’s output pins to the load.
Pin 3 should be connected to Vout(+) at the point on the board
where regulation is desired. A remote connection at the load
can adjust for a voltage drop only as large as that specified in
this datasheet, that is
1) Limit output capacitance on higher voltage outputs to
1,000µF. OR,
Vout(+) – SENSE(+) < Sense Range % x Vout
2) Prevent back-drive conditions that raise the off-state output
voltage to more than 60% of the input voltage.
Pin 3 must be connected for proper regulation of the output volt-
age. If these connections are not made, the converter will deliv-
er an output voltage that is slightly higher than its specified
value.
Thermal Considerations: For vertical mount applications
at elevated temperatures that call for forced air cooling (see
thermal derating curves), the preferred airflow direction is from
pin 11 to pin 1, as indicated in the thermal images provided.
If airflow is in the opposite direction (pin 1 to pin 11) the power
Note: the output over-voltage protection circuit senses the volt-
age across the output (pins 1, 2 and 4) to determine when it
should trigger, not the voltage across the converter’s sense lead
(pin 3).
O
devices will run hotter by about 5 C (corresponding to an
additional 1 ampere of load derating at conditions where der-
ating occurs).
CURRENT SHARE (Pin A - Optional): Additional informa-
tion on the current share feature will be provided in a future
revision of this technical specification. Please contact SynQor
engineering support for further details.
For horizontal mount applications (NQ0xxxxHMA parts),
where the inductor and power devices are facing down, the
preferred airflow direction is into the leading edge opposite the
pin header edge, such that air flowing under the NiQor PCB
flows out between the pins and the inductor. With this airflow
direction, and with the inductor firmly contacting the applica-
tion board, the user can apply the thermal derating curves pro-
vided herein for vertical mount with airflow from pin 11 to pin
1. Airflows in other directions across the horizontally mounted
O
NiQor will result in temperatures that are higher by about 5 C
O
with pin 11 to pin 1 airflow and about 10 C with pin 1 to pin
O
11 airflow. Also, temperature increases of up to 10 C (2 Amp
lower derating) can be expected if the inductor thermal inter-
face does not make good contact to the customer's circuit
board.
Layout Suggestion: When using a fixed output NiQor con-
verter, the designer may chose to use the trim function and
would thus be required to reserve board space for a trim resis-
tor. It is suggested that even if the designer does not plan to use
the trim function, additional space should be reserved on the
board for a trim resistor. This will allow the flexibility to use the
Product # NQ03xxxVMA15
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Doc.# 005-2NV3xxE Rev. E
6/24/04
Page 16
Technical Specification
Non-Isolated
SIP Converter
3.0 - 3.6V
15A
in
ORDERING INFORMATION
PART NUMBERING SYSTEM
The tables below show the valid model numbers and order-
ing 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.
The part numbering system for SynQor’s NiQor DC/DC con-
verters follows the format shown in the example below.
NQ 03 025 V M A 15 O R S
Options (see
Ordering Information)
Output Current
Thermal Design
Output Max Output
Model Number
Input Voltage
Voltage
0.9 V
Current
15 A
15 A
15 A
15 A
15 A
15 A
NQ03009p MA15xyz
NQ03012p MA15xyz
NQ03015p MA15xyz
NQ03018p MA15xyz
NQ03025p MA15xyz
3.0 - 3.6 V
3.0 - 3.6 V
3.0 - 3.6 V
3.0 - 3.6 V
3.0 - 3.6 V
Performance Level
Packaging (see Order Info)
Output Voltage
1.2 V
1.5 V
1.8 V
Input Voltage
2.5 V
0.85-2.75V
3.0 - 3.6 V
Product Family
* Nominal output voltage for this unit is 0.9V and it must be trim-
mmed up or down for any other desired voltage.
The first 12 characters comprise the base part number and
the last 3 characters indicate available options. Although
there are no default values for packaging, enable logic, pin
length and feature set, the most common options are vertical
mount SIP (V), Negative/Open logic (O), 0.160” pins (R)
and Sense feature set (S). These part numbers are more like-
ly to be readily available in stock for evaluation and proto-
type quantities.
The following option choices must be included in place of
the p x y z spaces in the model numbers listed above.
Packaging: p
Options Description: x y z
Packaging
Enable Logic
Pin Style
Feature Set
R - 0.160"
(Standard)
V - Vert. Mount SIP
H - Horz. Mount SIP
N - Negative
O - Neg/Open
S - Sense (Std.)
N - None
V - 0.160" (Vert
Reversed)
Application Notes
A variety of application notes and technical white papers
can be downloaded in pdf format at www.synqor.com.
Contact SynQor for further information:
Warranty
SynQor offers a three (3) year limited warranty. Complete warranty
information is listed on our web site or is available upon request from
SynQor.
Phone:
Toll Free: 888-567-9596
Fax:
978-849-0600
978-849-0602
E-mail:
Web:
sales@synqor.com
www.synqor.com
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.
Address: 155 Swanson Road
Boxborough, MA 01719
Product # NQ03xxxVMA15
Phone 1-888-567-9596
Doc.# 005-2NV3xxE Rev. E
6/24/04
Page 17
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