PQ24018QGx25
18 - 36V
Continuous Input
Technical
Specification
Quarter-brick
DC-DC Converter
1.8V
Outputs
25A
Current
45W
Max Power
2000V dc
Isolation
The PQ24018QGx25 PowerQor Giga quarter-brick
converter is a next-generation, board-mountable, isolated,
fixed switching frequency DC-DC converter that uses
synchronous rectification to achieve extremely high
conversion efficiency. The power dissipated by the converter
is so low that a heatsink is not required, which saves cost,
weight, height, and application effort. All of the power and
control components are mounted to the multi-layer PCB
substrate with high-yield surface mount technology. Since
the PowerQor converter has no explicit thermal connections,
it is extremely reliable. RoHS Compliant, see last page.
Operational Features
• High efficiency, >84% at full rated load current
• Delivers up to 25 amps of output current with minimal derating
- no heatsink required
• Wide input voltage range: 18V - 36V meets or exceeds all 24V
bus standards
• Fixed frequency switching provides predictable EMI performance
• No minimum load requirement means no preload resistors required.
PQ24018QGx25 Module
Protection Features
• Input under-voltage lockout disables converter at low input
voltage conditions
• Output current limit and short circuit protection protects converter
from excessive load current or short circuits
• Output over-voltage protection protects load from damaging voltages
• Thermal shutdown protects converer from abnormal
Mechanical Features
•
•
•
•
•
Industry standard pin-out configuration
Standard Size Open Frame:1.45" x 2.30" (36.8 x 58.4mm)
Open Frame height: .40” (10.2mm),
Open Frame Weight: 1.2 oz. (34g)
Flanged pins designed to permit surface mount soldering
(avoid wave solder) using FPiP technique on Open Frame Units
Safety Features
• UL 60950-1:R2011-12
• EN60950-1/A12:2011
• CAN/CSA-C22.2 No. 60950-1/A1:2011
Control Features
• On/Off control referenced to input side
(positive and negative logic options are available)
• Remote sense for the output voltage compensates for output
distribution drops
• Output voltage trim permits custom voltages and voltage margining
Contents
Mechanical Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Application Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Page No.
Product # PQ24018QGx25
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2QG218D Rev. B
04/09/13
Page 1
Open Frame Mechanical Diagram
1.45 [36.8]
0.600 [15.24]
0.450 [11.43]
0.300 [7.62]
0.150 [3.81]
Input:
Output:
Current:
Package:
18 - 36V
1.8V
25A
Quarter-brick
.40
[10.2]
0.145
[3.68]
See Note 3
8
7
6 5 4
2.30 [58.4]
2.00 [50.8]
Top View
Side View
0.14 [3.6]
1
0.43 [10.9]
0.300 [7.62]
0.600 [15.24]
2
3
Pin Farside Typical
See Notes 1, 2, and 3
0.063+/- .026
[1.60+/- .66]
Bottomside Clearance
NOTES
1)
2)
3)
4)
5)
6)
7)
Pins 1-3, 5-7 are 0.040” (1.02mm) diameter
with 0.080” (2.03mm) diameter standoff shoulders
Pins 4 and 8 are 0.0620” (1.57mm) diameter
with 0.100” (2.54mm) diameter standoff shoulders
All Pins: Material - Copper Alloy
Finish: Tin-Lead over Nickel Plate
Other pin extension lengths available.
Undimensioned components are shown for visual reference only.
Open Frame Weight: 1.2 oz. (34g)
All dimensions in inches (mm)
Unless otherwise specified:
Tolerances X.XXin. +/-0.02 (X.Xmm +/-0.5mm)
X.XXin. +/-0.010 (X.XXmm +/-0.25mm)
Workmanship: Meets or exceeds IPC-A-610 Class II
Pin
1
2
3
4
5
6
7
8
Name
Vin(+)
ON/OFF
Vin(–)
Vout(–)
SENSE(–)
TRIM
SENSE(+)
Vout(+)
PIN DESIGNATIONS
Function
Positive input voltage
TTL input to turn converter on and off, referenced
to Vin(–), with internal pull up.
Negative input voltage
Positive output voltage
Negative remote sense (See note 1)
Output voltage trim (See note 2)
Positive remote sense (See note 3)
Positive output voltage
8)
Notes:
1)
SENSE(–) should be connected to Vout(–) either remotely or at the converter.
2)
3)
Leave TRIM pin open for nominal output voltage.
SENSE(+) should be connected to Vout(+) either remotely or at the converter.
Product # PQ24018QGx25
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2QG218D Rev. B
04/09/13
Page 2
Baseplated Mechanical Diagram
1.47 [37.3]
1.030 [26.16]
0.22 [5.6]
0.600 [15.24]
0.450 [11.43]
0.300 [7.62]
0.150 [3.81]
0.23 [5.8]
8
7
6 5 4
Input:
Output:
Current:
Package:
18 - 36V
1.8V
25A
Quarter-brick
0.50 [12.7]
M3 Threaded Insert
4 Places
See Notes 1 and 2
0.145 [3.68]
See Note4
2.32 [58.9]
1.86 [47.2]
2.00 [50.8]
Top View
Side View
1
0.300 [7.62]
0.44 [11.2]
0.600 [15.24]
2
3
0.15 [3.8]
Pin Farside Typical
See Notes 5, 6, and 7
0.063+/- .026
[1.60+/- .66]
Bottomside Clearance
NOTES
1)
2)
3)
4)
5)
6)
7)
8)
M3 Screws used to bolt unit's Baseplate to other surfaces
(such as heatsink) Must not exceed 0.138" (3.50mm) depth
below the surface of the Baseplate
Applied Torque should not exceed 6in-lb (0.7Nm)
Baseplate flatness tolerance is 0.004" (.10mm) TIR for surface
Other pin extension lengths available.
Pins 1-3, 5-7 are 0.040" (1.02mm) Dia. with 0.080" (2.03mm)
Dia. Standoff shoulders
Pins 4, 8 are 0.062" (1.57mm) Dia. with 0.100" (2.54mm)
Dia. Standoff shoulders
All Pins: Material - Copper Alloy
Pin
1
2
3
4
5
6
7
8
Name
Vin(+)
ON/OFF
Vin(–)
Vout(–)
SENSE(–)
TRIM
SENSE(+)
Vout(+)
PIN DESIGNATIONS
Function
Positive input voltage
TTL input to turn converter on and off, referenced
to Vin(–), with internal pull up.
Negative input voltage
Positive output voltage
Negative remote sense (See note 1)
Output voltage trim (See note 2)
Positive remote sense (See note 3)
Positive output voltage
Finish: Tin-Lead over Nickel Plate
Undimensioned components are shown for visual reference only.
All dimensions in inches (mm)
9)
Baseplate Weight: 2.1 oz. (61g) typical
10)
All dimensions in inches (mm)
Unless otherwise specified:
Tolerances X.XXin. +/-0.02 (X.Xmm +/-0.5mm)
X.XXin. +/-0.010 (X.XXmm +/-0.25mm)
11)
Workmanship: Meets or exceeds IPC-A-610 Class II
Notes:
1)
SENSE(–) should be connected to Vout(–) either remotely or at the converter.
2)
3)
Leave TRIM pin open for nominal output voltage.
SENSE(+) should be connected to Vout(+) either remotely or at the converter.
Product # PQ24018QGx25
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2QG218D Rev. B
04/09/13
Page 3
Technical Specifications
PQ24018QGx25 Electrical Characteristics
Input:
Output:
Current:
Package:
18 - 36V
1.8V
25A
Quarter-brick
Ta = 25 °C, airflow rate = 300 LFM, Vin = 24Vdc, nominal Vout unless otherwise noted; full operating temperature range is -40 °C to +115 °C ambient
temperature with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
24
16
14.5
1.5
60
1.6
6
1.800
+0.1 (2)
+0.1 (2)
±9
Max.
36
16.5
15
2.0
3.0
100
3
Units Notes & Conditions
V
V
V
V
A
mA
mA
mA
V
% (mV)
% (mV)
mV
V
over sample line, load and temperature
20MHz bandwidth; Figures 13 & 16
mV
Full Load, 1μF ceramic, 10μF tantalum
mV
Full Load, 1μF ceramic, 10μF tantalum
A
A
Output Voltage 10% Low; Fig 17 & 18
A
dB
mV
mV
μs
120 Hz; Figure 20
470μF load cap, 5A/μs; Figure 12
50% lo to 75% lo
75% lo to 50% lo
INPUT CHARACTERISTICS
Operating Input Voltage Range
18
Input Under-Voltage Lockout
Turn-On Voltage Threshold
15.5
Turn-Off Voltage Threshold
14
Lockout Hysteresis Voltage
1.0
Maximum Input Current
No-Load Input Current
Off Converter Input Current
Input Reflected-Ripple Current
OUTPUT CHARACTERISTICS
Output Voltage Set Point
1.782
Output Voltage Regulation
Over Line
Over Load
Over Temperature
Total Output Voltage Range
1.75
Output Voltage Ripple and Noise
Peak-to-Peak
RMS
Operating Output Current Range
0
Output DC Current-Limit Inception
26
Short-Circuit Protection (redundant shutdown)
52
DYNAMIC CHARACTERISTICS
Input Voltage Ripple rejection
Output Voltage Current Transient
Positive Step Change in Outpu Current
Negative Step Change in Output Current
Settling Time to within 1% Vout nominal
Turn-On Transient
Turn-On Time
1
Start-Up Inhibit Period
180
Maximum Output Capacitance
EFFICIENCY
100% Load
50% Load
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Semiconductor Junction Temperature
Board Temperature
Transformer Temperature
ISOLATION CHARACTERISTICS
Isolation Voltage
2000
Isolation Resistance
10
Isolation Capacitance
100% Load, 18Vin
P-P thru 3.3μH inductor; Figures 13 & 15
1.816
+0.3 (5)
+0.3 (5)
±27
1.85
50
12
25
34
60
25
6
30
56
TBD
190
190
700
4
200
8
215
35,000
ms
ms
μF
%
%
Full load, Vout=90% nom.; Figs 9 & 10
-40°C to +125°C; Figure F
Full load; 5% overshoot of Vout at startup
Figure 1
84
87
125
125
125
°C
°C
°C
V
MΩ
pF
Plastic Package rated to 150°C
Board rated to 165°C
Figures 5 - 8
470
Product # PQ24018QGx25
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2QG218D Rev. B
04/09/13
Page 4
Technical Specifications
PQ24018QGx25 Electrical Characteristics (continued)
Input:
Output:
Current:
Package:
18 - 36V
1.8V
25A
Quarter-brick
Ta = 25 °C, airflow rate = 300 LFM, Vin = 24V dc unless otherwise noted; full operating temperature range is -40 °C to +115 °C baseplate temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control (Option P)
Off-Stage Voltage
On-Stage Voltage
ON/OFF Control (Option N)
Off-Stage Voltage
On-Stage Voltage
ON/OFF Control (Either Option)
Pull-up Voltage
Pull-up Resistance
Output Voltage Trim Range
Output Over-Voltage Protection
Over-Tempperature Shutdown
Min.
220
-2
2.4
2.4
-2
Typ.
240
Max.
260
0.8
18
18
0.8
Units Notes & Conditions
kHz
V
V
V
V
V
kΩ
%
%
°C
See circuit diagram; Figure B
Pull up to Vin/3
Across Pins 8 & 4; % of nominal Vout
Over full temp range; % of nominal Vout
Average PCB Temperature
Vin/3
33
-20
117
122
125
9.6
+10
127
Product # PQ24018QGx25
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2QG218D Rev. B
04/09/13
Page 5
Embedded System
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