8.33A/100W

Technical
Specification
PQ40120QGx08
18-75V
12V
8.33A
100W
2000V dc
Quarter-brick
Continuous Input
Output
Current
Power
Isolation
DC-DC Converter
The PQ40120QGx08 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 for
greater reliability. The PQ40 module offers a wide input
voltage range to cover both 24V and 48V applications.
RoHS compliant (see the last page).
PQ40120QGx08 Module
Operational Features
•
•
•
•
•
High efficiency, 90% at full rated load current
Delivers 8.33A full power with minimal derating - no heatsink required
Ultra wide input voltage range: 18-75V, with 100V 100ms input
Fixed frequency switching provides predictable EMI
No minimum load requirement
Protection Features
• Input under-voltage lockout disables converter at low input
voltage conditions
• Output current limit and short circuit protection protects converter
and load from damage and consequent hazardous conditions
• Active back bias limit prevents damage to converter from external
load induced pre-bias
• Output over-voltage protection protects load from damaging voltages
• Thermal shutdown protects converter from abnormal
Mechanical Features
•
•
•
•
Safety Features
Industry standard pin-out configuration
Standard Size:2.30"x1.45"x0.397" (58.4x36.8x10.08mm)
Weight: 1.32 oz. (37.5 grams)
Flanged pins designed to permit surface mount soldering,
avoid wave solder using FPiP technique on open frame units
• UL 60950-1:2007
• CAN/CSA-C22.2 No. 60950-1:2007
• EN60950-1/A12:2011
Control Features
Contents
• On/Off control referenced to input side
• Remote sense for the output voltage compensates for
• Output voltage trim permits custom voltages and voltage margining
Product # PQ40120QGx08
Phone 1-888-567-9596
Page No.
Mechanical Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Application Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
www.synqor.com
Doc.# 005-2QG128D Rev. C
11/13/12
Page 1
Input:
Output:
Current:
Package:
Open Frame Mechanical Diagram
TOP VIEW
1.45 [36.8]
.600 [15.24]
.450 [11.43]
.300 [7.62]
.150 [3.81]
18-75V
12V
8.33A
Quarter-brick
SIDE VIEW
.031 ± .027
[0.79 ± 0.68]
Bottomside
Clearance
8 7 6 5 4
2.32
[58.9]
2.00
[50.8]
1
2
.180
[4.57]
See Note 6
.397 ± .015
[10.08 ± 0.38]
Overall Height
3
.14 [3.6]
.43 [10.8]
.300 [7.62]
.600 [15.24]
NOTES
1)
2)
3)
4)
5)
6)
Pins 1-3, 5-7 are 0.040” (1.02mm) diameter, with 0.080” (2.03mm)
diameter standoff shoulders.
Pins 4 and 8 are 0.062” (1.57 mm) diameter with 0.100” (2.54 mm)
diameter standoff shoulders.
Other pin extension lengths available.
All Pins: Material - Copper Alloy- Finish - Matte Tin over Nickel plate
Undimensioned components are shown for visual reference only.
Weight: 1.32 oz. (37.5 grams)
All dimensions in inches (mm)
Tolerances: x.xx in +/-0.02 in. (x.xmm +/-0.5 mm)
x.xxx in +/-0.010 in. (x.xxmm +/-0.25 mm)
Product # PQ40120QGx08
Phone 1-888-567-9596
PIN DESIGNATIONS
Pin
Name
Function
1
Vin(+)
2
ON/OFF
Positive input voltage
TTL input to turn converter on and off,
referenced to Vin(–), with internal pull up.
Negative input voltage
Negative output voltage
Negative remote sense (See note 1)
Output voltage trim (See note 2)
Positive remote sense (See note 3)
Positive output voltage
3
Vin(–)
4
Vout(-)
5
SENSE(–)
6
TRIM
7
SENSE(+)
8
Vout(+)
Notes:
1)
SENSE(–) should be connected to Vout(–) either remotely or
at the converter.
2)
Leave TRIM pin open for nominal output voltage.
3)
SENSE(+) should be connected to Vout(+) either remotely or at the
converter.
www.synqor.com
Doc.# 005-2QG128D Rev. C
11/13/12
Page 2
Input:
Output:
Current:
Package:
Baseplated Mechanical Diagram
TOP VIEW
18-75V
12V
8.33A
Quarter-brick
SIDE VIEW
1.47 [37.3]
1.03 [26.2]
.600 [15.24]
.450 [11.43]
.300 [7.62]
.150 [3.81]
.22 [5.6]
.031 ± .027
[0.79 ± 0.68]
Bottomside
Clearance
.23 [5.8]
8 7 6 5 4
2.32
[58.9]
2.002 1.86
[50.8] [47.2]
M3 Threaded Inserts
4 Places
See Notes 1 & 2
1
2
.180
[4.57]
See Note 6
.469 ± .022
[11.91 ± 0.55]
Overall Height
3
.150 [3.81]
.44 [11.1]
.300 [7.62]
.600 [15.24]
NOTES
1)
M3 screws used to bolt unit’s baseplate to other surfaces (such as a
heatsink) must not exceed 0.100” (2.54 mm) depth below the surface
of the baseplate.
2) Applied torque per screw should not exceed 6in-lb. (0.7 Nm).
3) Baseplate flatness tolerance is 0.004” (.10mm) TIR for surface.
4) Pins 1-3, 5-7 are 0.040” (1.02mm) diameter, with 0.080” (2.03mm)
diameter standoff shoulders.
5) Pins 4 and 8 are 0.062” (1.57 mm) diameter with 0.100” (2.54 mm)
diameter standoff shoulders.
6) Other pin extension lengths available. Recommended pin length is
0.03” (0.76mm) greater than the PCB thickness.
7) All Pins: Material - Copper Alloy- Finish - Matte Tin over Nickel plate
8) Undimensioned components are shown for visual reference only.
9) Weight: 2.15 oz. (60.9 g) typical
10) All dimensions in inches (mm)
Tolerances: x.xx in +/-0.02 in. (x.xmm +/-0.5 mm)
x.xxx in +/-0.010 in. (x.xxmm +/-0.25 mm)
Product # PQ40120QGx08
Phone 1-888-567-9596
PIN DESIGNATIONS
Pin
Name
1
Vin(+)
2
ON/OFF
Function
Positive input voltage
TTL input to turn converter on and off,
referenced to Vin(–), with internal pull up.
Negative input voltage
Negative output voltage
Negative remote sense (See note 1)
Output voltage trim (See note 2)
Positive remote sense (See note 3)
Positive output voltage
3
Vin(–)
4
Vout(-)
5
SENSE(–)
6
TRIM
7
SENSE(+)
8
Vout(+)
Notes:
1)
SENSE(–) should be connected to Vout(–) either remotely or
at the converter.
2)
Leave TRIM pin open for nominal output voltage.
3)
SENSE(+) should be connected to Vout(+) either remotely or at the
converter.
www.synqor.com
Doc.# 005-2QG128D Rev. C
11/13/12
Page 3
Input:
Output:
Current:
Package:
Technical Specifications
18-75V
12V
8.33A
Quarter-brick
PQ40120QGx08 Electrical Characteristics
Ta = 25 °C, airflow rate = 300 LFM, Vin = 48V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
Operating
Operating Transient Protection
Isolation Voltage
Input to Output
Operating Temperature
Storage Temperature
Voltage at ON/OFF input pin
INPUT CHARACTERISTICS
Operating Input Voltage Range
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Voltage Hysteresis
Maximum Input Current
No-Load Input Current
Disabled Input Current
Inrush Current Transient Rating
Response to Input Transient
Input Reflected Ripple Current
Input Terminal Ripple Current
Recommended Input Fuse
Input Filter Component Values (L\C)
Recommended External Input Capacitance
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Output Voltage Regulation
Over Line
Over Load
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak-to-Peak
RMS
Operating Output Current Range
Output DC Current-Limit Inception
Output DC Current-Limit Shutdown Voltage
Current Share Accuracy (2 units paralleled)
Back-Drive Current Limit while Enabled
Back-Drive Current Limit while Disabled
Maximum Output Capacitance
EFFICIENCY
100% Load - (24Vin)
50% Load - (24Vin)
100% Load - (48Vin)
50% Load - (48Vin)
Product # PQ40120QGx08
Typ.
-1
-40
-55
-2
Max.
Units Notes & Conditions
100
80
100
V
V
V
2000
100
125
18
V
°C
°C
V
18
48
75
V
16.0
14.5
1.0
16.5
15.0
1.5
17.0
15.5
2.0
9.3
160
4
0.03
V
V
V
A
mA
mA
A2s
mV
mA
mA
A
µH/µF
µF
80
2.0
250
5
145
20.0
1.5\6.6
47
11.82
12.00
12.18
V
+0.05 \ 5
+0.05 \ 5
±90
+0.2 \ 24
+0.2 \ 24
±240
12.42
%/mV
%/mV
%/mV
V
25
15
150
30
8.33
11.0
mV
mV
A
A
V
%
A
mA
μF
11.58
0
9.0
0.1
0
Phone 1-888-567-9596
9.6
7.2
2
0.3
10
5
0.8
50
2,000
90
91
89
90
www.synqor.com
%
%
%
%
Continuous
Continuous
100ms transient, square wave
100% Load, 18V Vin
1000V/ms input transient
RMS thru 10μH inductor
RMS
Fast acting external fuse recommended
Internal values
At full load: drift at zero load is minimal
Over sample, line, load, temperature & life
20MHz bandwidth, see note 1
Full load
Full load
Subject to thermal derating
Output Voltage 10% Low
% of rated output current
Negative current drawn from output source
Negative current drawn from output source
12Vout at 8.3A Resistive Load
Figures
Figures
Figures
Figures
1
1
1
1
-
4,
4,
4,
4,
24Vin
24Vin
48Vin
48Vin
Doc.# 005-2QG128D Rev. C
11/13/12
Page 4
Input:
Output:
Current:
Package:
Technical Specifications
18-75V
12V
8.33A
Quarter-brick
PQ40120QGx08 Electrical Characteristics (continued)
Ta = 25 °C, airflow rate = 300 LFM, Vin = 48V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
DYNAMIC CHARACTERISTICS
Input Voltage Ripple Rejection
Output Voltage during Load Current Transient
Step Change in Output Current (0.1A/µs)
Step Change in Output Current (5A/µs)
Settling time
Turn-On Transient
Turn-On Time
4
Output Voltage Overshoot
Start-Up Inhibit Time
180
ISOLATION CHARACTERISTICS
Isolation Voltage (dielectric strength)
Isolation Resistance
Isolation Capacitance (input to output)
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Semiconductor Junction Temperature
Board Temperature
Transformer Temperature
FEATURE CHARACTERISTICS
Switching Frequency
291
ON/OFF Control (Option P)
Off-State Voltage
-2
On-State Voltage
2.4
ON/OFF Control (Option N)
Off-State Voltage
2.4
On-State Voltage
-2
ON/OFF Control (Either Option)
Pull-Up Voltage
Pull-Up Resistance
Output Voltage Trim Range
-20
Output Voltage Remote Sense Range
Output Over-Voltage Protection
117
Over-Temperature Shutdown
Over-Temperature Shutdown Restart Hysteresis
Load Current Scale Factor
RELIABILITY CHARACTERISTICS
Calculated MTBF (Telcordia)
Calculated MTBF (MIL-217)
Field Demonstrated MTBF
Max.
Units Notes & Conditions
45
dB
120 Hz; Fig 20
800
400
800
mV
mV
µs
50% to 75% to 50% Iout max, Fig 11
50% to 75% to 50% Iout max; Fig 12
To within 1% Vout nom
ms
%
ms
Full load, Vout=90% nom; Figs 9 & 10
10,000µF load capacitance, Iout = 0A
-40˚C to +125˚C; Fig A
V
MΩ
pF
See Absolute Maximum Ratings
125
125
125
°C
°C
°C
Package rated to 150°C
UL rated max operating temp 130°C
340
kHz
Regulation stage and Isolation stage
0.8
18
V
V
18
0.8
V
V
17.7
V
kΩ
%
%
%
°C
°C
°C
8
0
200
16
240
2000
30
470
315
See note 3
Application notes; Figures A & B
Vin/4.25
40
122
125
10
1,000
+10
+10
127
2.5
1.56
Measured across Pins 9 & 5; Figure C
Measured across Pins 9 & 5; Figure C
Over Full Temperature Range; % of nominial Vout
Average PCB Temperature
See Output Load Current app. Note on our web
106 Hrs. TR-NWT-000332; 80% load, 300LFM, 40°C Ta
106 Hrs. MIL-HDBK-217F; 80% load, 300LFM, 40°C Ta
106 Hrs. See our website for details
Note 1: For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: [email protected])
Note 2: Higher values of isolation capacitance can be added external to the module.
Product # PQ40120QGx08
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2QG128D Rev. C
11/13/12
Page 5
Input:
Output:
Current:
Package:
Technical Figures
100
18-75V
12V
8.33A
Quarter-brick
92
95
91
85
Efficiency (%)
Efficiency (%)
90
80
75
70
18 Vin
89
25 ºC
88
48 Vin
65
90
40 ºC
55 ºC
75 Vin
60
0
1
2
3
4
5
Load Current (A)
6
7
87
100
8
Figure 1: Efficiency at nominal output voltage vs. load current for 18V, 48V and
75V input at 25°C.
200
Air Flow (LFM)
300
400
Figure 2: Efficiency at nominal output voltage and 60% rated power vs. airflow
rate for ambient air temperatures of 25°C, 40°C, and 55°C (nominal input
voltage).
7
14
10
Power Dissipation (W)
Power Dissipation (W)
12
8
6
4
18 Vin
2
6
5
4
25 ºC
40 ºC
48 Vin
55 ºC
75 Vin
0
0
1
2
3
4
5
Load Current (A)
6
7
3
100
8
Figure 3: Power dissipation at nominal output voltage vs. load current for 18V,
48V and 75V input at 25°C.
200
Air Flow (LFM)
300
400
Figure 4: Power dissipation at nominal output voltage and 60% rated power
vs. airflow rate for ambient air temperatures of 25°C, 40°C, and 55°C (nominal
input voltage, 48V input).
9
8
7
Iout (A)
6
5
400 LFM (2.0 m/s)
4
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
3
100 LFM (0.5 m/s)
2
0
25
40
55
70
85
Ambient Air Temperature (°C)
Figure 5: Maximum output power derating curves vs. ambient air temperature
for airflow rates of 100 LFM through 400 LFM with air flowing from pin 3 to pin
1 (24V input).
Product # PQ40120QGx08
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Figure 6: Thermal plot of converter 8.33 amp load current with 55°C air flowing
at the rate of 200 LFM. Air is flowing across the converter sideways from pin 3
to pin 1 (24V input).
www.synqor.com
Doc.# 005-2QG128D Rev. C
11/13/12
Page 6
Input:
Output:
Current:
Package:
Technical Figures
18-75V
12V
8.33A
Quarter-brick
9
8
7
Iout (A)
6
5
400 LFM (2.0 m/s)
4
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
3
100 LFM (0.5 m/s)
2
0
25
40
55
70
85
Ambient Air Temperature (°C)
Figure 7: Maximum output power derating curves vs. ambient air temperature
for airflow rates of 100 LFM through 400 LFM with air flowing from pin 3 to pin
1 (48V input).
Figure 8: Thermal plot of converter at 8.1 amp load current with 55°C air
flowing at the rate of 200 LFM. Air is flowing across the converter sideways from
pin 3 to pin 1 (48V input).
9
8
7
Iout (A)
6
5
400 LFM (2.0 m/s)
4
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
3
100 LFM (0.5 m/s)
2
0
25
40
55
70
85
Ambient Air Temperature (°C)
Figure 9: Maximum output power-derating curves vs. ambient air temperature
for airflow rates of 100 LFM through 400 LFM with air flowing from input to
output (24V input).
Figure 10: Thermal plot of converter at 8.33 amp load current with 85°C air
flowing at the rate of 200 LFM. Air is flowing across the converter from input to
output (24V input).
9
8
7
Iout (A)
6
5
400 LFM (2.0 m/s)
4
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
3
100 LFM (0.5 m/s)
2
0
25
40
55
70
85
Ambient Air Temperature (°C)
Figure 11: Maximum output power-derating curves vs. ambient air temperature
for airflow rates of 100 LFM through 400 LFM with air flowing from input to
output (48V input).
Product # PQ40120QGx08
Phone 1-888-567-9596
Figure 12: Thermal plot of converter at 8.1 amp load current with 85°C air
flowing at the rate of 200 LFM. Air is flowing across the converter from input to
output (48V input).
www.synqor.com
Doc.# 005-2QG128D Rev. C
11/13/12
Page 7
Input:
Output:
Current:
Package:
Technical Figures
18-75V
12V
8.33A
Quarter-brick
Figure 13: Turn-on transient at full load (resistive load) (4 ms/div). Input voltage
pre-applied. Ch 1: Vout (5V/div). Ch 2: ON/OFF input (5V/div).
Figure 14: Turn-on transient at zero load (4 ms/div). Ch 1: Vout (5V/div). Ch 2:
ON/OFF input (5V/div).
Figure 15: Output voltage response to step-change in load current (50%-75%50% of Iout(max); dI/dt = 0.1A/μs). Load cap: 10μF, 100 mW ESR tantalum cap
and 1μF ceramic cap. Ch 1: Vout (500mV/div), Ch 2: Iout (2A/div).
Figure 16: Output voltage response to step-change in load current (50%-75%50% of Iout(max): dI/dt = 5A/µs). Load cap: 470µF, 30 mW ESR tantalum cap
and 1µF ceramic cap. Ch 1: Vout (500mV/div), Ch 2: Iout (2A/div).
See Fig. 19
10 µH
source
impedance
See Fig. 18
See Fig. 20
iS
VSOURCE
iC
47 µF,
<1Ω ESR
electrolytic
capacitor
DC/DC
Converter
VOUT
1 µF
10 µF,
ceramic 100mΩ ESR
capacitor
tantalum
capacitor
Figure 17: Test set-up diagram showing measurement points for Input Terminal
Ripple Current (Figure 18), Input Reflected Ripple Current (Figure 19) and
Output Voltage Ripple (Figure 20).
Product # PQ40120QGx08
Phone 1-888-567-9596
Figure 18: Input Terminal Ripple Current, ic, at full rated output current and
nominal input voltage with 10µH source impedance and 47µF electrolytic
capacitor (200 mA/div). See Figure 17.
www.synqor.com
Doc.# 005-2QG128D Rev. C
11/13/12
Page 8
Input:
Output:
Current:
Package:
Technical Figures
Figure 19: Input reflected ripple current, is, through a 10 µH source inductor at
nominal input voltage and rated load current (10 mA/div). See Figure 17.
18-75V
12V
8.33A
Quarter-brick
Figure 20:Output voltage ripple at nominal input voltage and rated load current
(20 mV/div). Load capacitance: 1µF ceramic capacitor and 10µF tantalum
capacitor. Bandwidth: 20 MHz. See Figure 17.
13
Output Voltage (V)
12
11
10
18 Vin
9
48 Vin
75 Vin
8
0
1
2
3
4
5
6
Load Current (A)
7
8
9
10
11
Figure 21: Output voltage vs. load current showing typical current limit curves
and converter shutdown points.
Figure 22: Load current (5A/div) as a function of time when the converter
attempts to turn on into a 10 mW short circuit. Top trace (40ms/div) is an
expansion of the on-time portion of the bottom trace.
10
0
1
0.1
18 Vin
0.01
48 Vin
Forward Transmission (dB)
Output Impedance (ohms)
-10
75 Vin
0.001
10
100
1,000
10,000
100,000
-40
-50
-60
-70
18 Vin
-80
48 Vin
-100
75 Vin
10
100
1,000
10,000
100,000
Hz
Figure 23: Magnitude of incremental output impedance (Zout = vout/iout) for
minimum, nominal, and maximum input voltage at full rated power.
Phone 1-888-567-9596
-30
-90
Hz
Product # PQ40120QGx08
-20
Figure 24: Magnitude of incremental forward transmission (FT = vout/vin) for
minimum, nominal, and maximum input voltage at full rated power.
www.synqor.com
Doc.# 005-2QG128D Rev. C
11/13/12
Page 9
Input:
Output:
Current:
Package:
18-75V
12V
8.33A
Quarter-brick
100
15
Input Impedance (ohms)
Reverse Transmission (dB)
5
-5
-15
-25
-35
18 Vin
10
1
18 Vin
48 Vin
48 Vin
-45
75 Vin
75 Vin
-55
10
100
1,000
10,000
0.1
100,000
10
100
1,000
10,000
100,000
Hz
Hz
Figure 25: Magnitude of incremental reverse transmission (RT = iin/iout) for
minimum, nominal, and maximum input voltage at full rated power.
Figure 26: Magnitude of incremental input impedance (Zin = vin/iin) for
minimum, nominal, and maximum input voltage at full rated power.
12
11
Vout Trim-up (%)
10
9
8
7
6
5
+80 ºC
4
+25 ºC
3
2
23.0
-40 ºC
22.5
22.0
21.5
21.0
20.5
20.0
19.5
19.0
18.5
18.0
Input Voltage (V)
Figure 27: Achievable trim-up percentage vs. input voltage at +85°C, +25°C
and -40°C (all at full load). Full trim-up percentage is achieved at loads of 50%
or less across full temperature and input voltage range.
Product # PQ40120QGx08
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2QG128D Rev. C
11/13/12
Page 10
Input:
Output:
Current:
Package:
Application Section
18-75V
12V
8.33A
Quarter-brick
BASIC OPERATION AND FEATURES
CONTROL FEATURES
The PowerQor series converter uses a two-stage power
conversion topology. The first stage is a buck-converter that
keeps the output voltage constant over variations in line, load,
and temperature. The second stage uses a transformer to
provide the functions of input/output isolation and voltage stepdown to achieve the low output voltage required.
REMOTE ON/OFF (Pin 2): The ON/OFF input, Pin 2, permits
the user to control when the converter is on or off. This input is
referenced to the return terminal of the input bus, Vin(-). There
are two versions of the converter that differ by the sense of the
logic used for the ON/OFF input.
Both the first stage and the second stage switch at a fixed
frequency for predictable EMI performance. Rectification of the
transformer’s output is accomplished with synchronous rectifiers.
These devices, which are MOSFETs with a very low on-state
resistance, dissipate far less energy than Schottky diodes. This
is the primary reason that the PowerQor converter has such
high efficiency, even at very low output voltages and very high
output currents.
Dissipation throughout the converter is so low that it does not
require a heatsink for operation. Since a heatsink is not required,
the PowerQor converter does not need a metal baseplate or
potting material to help conduct the dissipated energy to the
heatsink. The PowerQor converter can thus be built more
simply and reliably using high yield surface mount techniques on
a PCB substrate.
The PowerQor series of half-brick and quarter-brick converters
uses the industry standard footprint and pin-out configuration.
ON/OFF
ON/OFF
Vin(_)
Vin(_)
Remote Enable Circuit
Pin 7 should be connected to Vout(+) and Pin 5 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
[Vout(+) - Vout(-)] – [Vsense(+) - Vsense(-)] <
Sense Range % x Vout
Pins 7 and 5 must be connected for proper regulation of
the output voltage. If these connections are not made, the
converter will deliver an output voltage that is slightly higher
than its specified value.
Note: the output over-voltage protection circuit senses the
voltage across the output (pins 8 and 4) to determine when
it should trigger, not the voltage across the converter’s sense
leads (pins 7 and 5). Therefore, the resistive drop on the board
should be small enough so that output OVP does not trigger,
even during load transients.
Positive Logic
(Permanently Enabled)
5V
5V
162k
50k
TTL
ON/OFF
Vin(_)
Vin(_)
100pF
50k
Vin(_)
Direct Logic Drive
Figure A: Various circuits for driving the ON/OFF pin.
Product # PQ40120QGx08
Vin(+)
ON/OFF
TTL/
CMOS
Open Collector Enable Circuit
REMOTE SENSE(+) (Pins 7 and 5): The SENSE(+) inputs
correct for voltage drops along the conductors that connect the
converter’s output pins to the load.
Vin(_)
Negative Logic
(Permanently Enabled)
ON/OFF
ON/OFF
In the positive logic version, the ON/OFF input is active high
(meaning that a high turns the converter on). In the negative
logic version, the ON/OFF signal is active low (meaning that a
low turns the converter on). Figure A details five possible circuits
for driving the ON/OFF pin. Figure B is a detailed look of the
internal ON/OFF circuitry.
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Figure B: Internal ON/OFF pin circuitry
Doc.# 005-2QG128D Rev. C
11/13/12
Page 11
Input:
Output:
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Package:
Application Section
OUTPUT VOLTAGE TRIM (Pin 6): The TRIM input permits the
user to adjust the output voltage across the sense leads up or
down according to the trim range specifications.
To decrease the output voltage, the user should connect a
resistor between Pin 6 and Pin 5 (SENSE(-) input). For a desired
decrease of the nominal output voltage, the value of the resistor
should be
Rtrim-down =
511
- 10.22 (kW)
D%
( )
where
Vnominal – Vdesired
Vnominal
D% =
x 100%
To increase the output voltage, the user should connect a
resistor between Pin 6 and Pin 7 (SENSE(+) input). For a desired
increase of the nominal output voltage, the value of the resistor
should be
Rtrim- =
up
where
(
5.11VOUT(100+D%) _ 511 _
10.22
1.225D%
D%
)
(kW)
VOUT = Nominal Output Voltage
Figure C graphs the relationship between the trim resistor value
and Rtrim-up and Rtrim-down, showing the total range the
output voltage can be trimmed up or down.
Trim Resistance (kOhms)
Total DC Variation of Vout: For the converter to meet its full
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
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 Turn-On 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 Limit: The maximum current limit remains
constant as the output voltage drops. However, once the
impedance of the short across the output is small enough to
make the output voltage drop below the specified Output DC
Current-Limit Shutdown Voltage, the converter turns off.
The converter then enters a “hiccup mode” where it repeatedly
turns on and off at a 5 Hz (nominal) frequency with a 5% duty
cycle until the short circuit condition is removed. This prevents
excessive heating of the converter or the load board.
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 damage
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 current
limit condition. Load capacitance determines exactly how high
the output voltage will rise in response to these conditions. After
200 ms the converter will automatically restart.
100,000.0
10,000.0
1,000.0
100.0
10.0
18-75V
12V
8.33A
Quarter-brick
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20
% Increase in Vout
% Decrease in Vout
Figure C: Trim Graph
Note: the TRIM feature does not affect the voltage at which the
output over-voltage protection circuit is triggered. Trimming the
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.
It is not necessary for the user to add capacitance at the Trim
pin. The node is internally bypassed to eliminate noise.
Product # PQ40120QGx08
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Doc.# 005-2QG128D Rev. C
11/13/12
Page 12
Input:
Output:
Current:
Package:
Application Section
APPLICATION CONSIDERATIONS
Input System Instability: This condition can occur because
any DC/DC converter appears incrementally as a negative
resistance load. A detailed application note titled “Input
System Instability” is available on the SynQor website which
provides an understanding of why this instability arises, and
shows the preferred solution for correcting it.
18-75V
12V
8.33A
Quarter-brick
Input Filtering and External Capacitance: Figure E below
provides a diagram showing the internal input filter components.
This filter dramatically reduces input terminal ripple current,
which otherwise could exceed the rating of an external
electrolytic input capacitor. The recommended external input
capacitance is specified in the “Input Characteristics” section.
More detailed information is available in the application note
titled “EMI Characteristics” on the SynQor website.
Application Circuits: Figure D below provides a typical circuit
diagram which details the input filtering and voltage trimming.
Vout(+)
Vin(+)
Vin
External
Input
Filter
Electrolytic
Capacitor
47µF
Vsense(+)
Rtrim-up
Trim
ON/OFF
or
Rtrim-down
Vsense(_)
Vin(_)
Cload
Iload
Vout(_)
Figure D: Typical application circuit (negative logic unit, permanently enabled).
L
Vin(+)
C
Vin(_)
Figure E: Internal Input Filter Diagram (component values listed on page 3).
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Doc.# 005-2QG128D Rev. C
11/13/12
Page 13
Input:
Output:
Current:
Package:
Application Section
18-75V
12V
8.33A
Quarter-brick
Startup Inhibit Period: The Startup Inhibit Period ensures that
the converter will remain off for approximately 200ms when it is
shut down for any reason. When an output short is present, this
generates a 5Hz “hiccup mode,” which prevents the converter
from overheating. In all, there are seven ways that the converter
can be shut down, initiating a Startup Inhibit Period:
Before time t0, when the input voltage is below the UVL threshold,
the unit is disabled by the Input Under-Voltage Lockout feature.
When the input voltage rises above the UVL threshold, the Input
Under-Voltage Lockout is released, and a Startup Inhibit Period is
initiated. At the end of this delay, the ON/OFF pin is evaluated,
and since it is active, the unit turns on.
• Input Under-Voltage Lockout
At time t1, the unit is disabled by the ON/OFF pin, and it cannot
be enabled again until the Startup Inhibit Period has elapsed.
• Input Over-Voltage Shutdown (not present in Quarter-brick)
• Output Over-Voltage Protection
When the ON/OFF pin goes high after t2, the Startup Inhibit
Period has elapsed, and the output turns on within the typical
Turn-On Time.
• Over Temperature Shutdown
• Current Limit
• Short Circuit Protection
• Turned off by the ON/OFF input
Figure F shows three turn-on scenarios, where a Startup Inhibit
Period is initiated at t0, t1, and t2:
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].
Vin
Under-Voltage
Lockout Turn-On
Threshold
ON/OFF
(pos logic)
ON
OFF
OFF ON
ON
8ms (typical
turn on time)
Vout
200ms
(typical start-up
inhibit period)
t1
t0
200ms
200ms
t2
t
Figure F: Startup Inhibit Period (turn-on time not to scale)
Product # PQ40120QGx08
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Doc.# 005-2QG128D Rev. C
11/13/12
Page 14
Input:
Output:
Current:
Package:
Standards and Qualifications
Parameter
18-75V
12V
8.33A
Quarter-brick
Notes & Conditions
STANDARDS COMPLIANCE
UL 60950-1:2007
CAN/CSA-C22.2 No. 60950-1:2007
EN60950-1/A12:2011
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.
Parameter
QUALIFICATION TESTING
Life Test
Vibration
Mechanical Shock
Temperature Cycling
Power/Thermal Cycling
Design Marginality
Humidity
Solderability
Product # PQ40120QGx08
# Units
32
5
5
10
5
5
5
15 pins
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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, 95% RH, 1000 hours, continuous Vin applied except 5 min/day
MIL-STD-883, method 2003
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Doc.# 005-2QG128D Rev. C
11/13/12
Page 15
Input:
Output:
Current:
Package:
Ordering Information
PART NUMBERING SYSTEM
18-75V
12V
8.33A
Quarter-brick
ORDERING INFORMATION
The part numbering system for SynQor’s dc-dc converters
follows the format shown in the example below.
PQ 4 0 1 2 0Q G B 0 8 N R S
Options
(see
Ordering Information)
Output Current
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 characters for options.
Add “-G” to the model number for 6/6 RoHS compliance.
The following options must be included in place of the w x y z
spaces in the model numbers listed above.
Thermal Design
Performance Level
Thermal Design
Package Size
Output Voltage
Options Description: w x y z
Enable Logic
Pin Style
A - Open Frame
B - Baseplated
Input Voltage
K - 0.110"
N - 0.145"
R - 0.180"
Y - 0.250"
N - Negative
P - Positive
Product Family
The first 12 characters comprise the base part number and
the last 3 characters indicate available options. The “-G”
suffix indicates 6/6 RoHS compliance.
A variety of application notes and technical white papers can
be downloaded in pdf format from our website.
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].
S - Standard
Not all combinations make valid part numbers, please contact
SynQor for availability. See the Product Summary web page for
more options.
Model Number
Application Notes
Feature Set
PQ40033QGw25xyz-G
PQ40050QGw20xyz-G
PQ40080QGw09xyz-G
PQ40120QGw08xyz-G
PQ40150QGw07xyz-G
Input Voltage
35
35
35
35
35
-
75
75
75
75
75
Output
Voltage
Max Output
Current
3.3V
5.0V
8.0V
12V
15V
25A
20A
9.0A
8.33A
6.67A
V
V
V
V
V
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.
Contact SynQor for further information:
Phone:
Toll Free:
Fax:
E-mail:
Web:
Address:
Product # PQ40120QGx08
978-849-0600
888-567-9596
978-849-0602
[email protected]
www.synqor.com
155 Swanson Road
Boxborough, MA 01719
USA
Phone 1-888-567-9596
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
8,149,597
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.
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Doc.# 005-2QG128D Rev. C
11/13/12
Page 16