45A/225W

Technical
Specification
PQ60050HPx45
48V
5.0V
45A
225W
2000V dc
Half-brick
Input
Output
Current
Max Power
Isolation
DC-DC Converter
The PQ60050HPB45 PowerQor Peta converter is a nextgeneration, 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. The Peta series
converters offer industry leading output power for a
standard half-brick module. In addition to typical single
ouput voltage applications, the Peta units can also be
used to provide a wide input range Intermediate Bus
for IBA systems. RoHS compliant (see last page).
Protection Features
• Input under-voltage lockout disables converter at low Vin conditions
• Output current limit & Short circuit protection
• Active back bias limit prevents damage to converter
from external load induced pre-bias
• Output over-voltage protection
• Thermal shutdown protects converter from abnormal conditions
PQ60050HPx45 Model
Operational Features
• Ultra-high efficiency, 91% at full rated load current
• Delivers up to 225W of output power (45A)
with minimal derating - no heatsink required
• Wide input voltage range: 35-75V
• Input voltage transient capability: 100V, 100ms
• Fixed frequency switching provides predictable EMI
Mechanical Features
• Industry standard pin-out configuration
• Standard Size Open Frame:2.40" x 2.30" (61 x 58.4mm)
• Total Open Frame height only 0.43” (10.8mm),
permits better airflow and smaller card pitch
• Open Frame Weight: 2.6 oz. (75g)
• Flanged pins designed to permit surface mount soldering
(avoid wave solder) using FPiP technique
Control Features
• On/Off control referenced to input side (Positive & Neg logic options)
• Remote sense for Vout compensates for output distribution drops
• Output voltage trim permits custom voltages and voltage margining
Contents
Safety Features
• UL 60950-1:2007
• CAN/CSA-C22.2 No. 60950-1:2007
• EN60950-1:A12:2011
Product # PQ60050HPx45
Phone 1-888-567-9596
Page No.
Mechanical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Standards & Qualifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Technical Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Applications Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
www.synqor.com
Doc.# 050-2HP650K Rev. D
10/09/12
Page 1
Input: 35-75V
Output: 5.0V
Current: 45A
Package: Half-brick
Open Frame Mechanical Diagram
Top View
2.40 (61.0)
Side View
1.400 (35.56)
Bottom View
1.400 [ 35.56 ]
Max. Height
0.43
1.000 (25.40)
1.000 [ 25.40]
(10.8)
0.700 (17.78)
0.700 [ 17.78]
0.400 (10.16)
0.400 [ 10.16]
0.145
(3.68)
See Note 3
9
8
7
6
5
2.30
1.900
(58.4)
[ 48.26 ]
0.19
[ 4.8 ]
0.19
(4.8)
1
0.50 (12.7)
0.400 (10.16)
1.400 (35.56)
2
4
0.037+/-0.029
PIN
Farside
Typical
(0.94+/-0.73)
Bottomside Clearance
0.50 [12.7 ]
See Note 9
0.400 [10.16]
1.400 [ 35.56]
NOTES
1)
2)
3)
4)
5)
6)
7)
8)
PIN DESIGNATIONS
Pins 1, 2, 4, 6-8 are 0.040” (1.02mm) diameter with 0.080"
(2.03mm) Dia. Standoff shoulders
Pins 5 and 9 are 0.080” (2.03 mm) diameter with .125"
(3.18mm) Dia. 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.
All dimensions in inches (mm)
Open Frame Weight: 2.6 oz. (75g)
Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
Product # PQ60050HPx45
Phone 1-888-567-9596
Pin
Name
Function
1
Vin(+)
Positive input voltage
2
ON/OFF
4
5
6
7
8
9
Vin(–)
Vout(–)
SENSE(–)
TRIM
SENSE(+)
Vout(+)
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TTL input to turn converter on and off, referenced
to Vin(–), with internal pull up.
Negative input voltage
Negative output voltage
Return remote sense
Output voltage trim
Positive remote sense
Positive output voltage
Doc.# 050-2HP650K Rev. D
10/09/12
Page 2
Input: 35-75V
Output: 5.0V
Current: 45A
Package: Half-brick
Baseplated Mechanical Diagram
Top View
Side View
Bottom View
2.40 [ 61.0 ]
1.400 [ 35.56 ]
0.506 ± 0.025
[ 12.85 ± 0.63 ]
2.000 [ 50.80]
Overall Height
0.20 [ 5.1 ]
0.035 ± 0.029
1.000 [ 25.40]
0.700 [ 17.78]
0.400 [ 10.16]
[ 0.89 ± 0.73]
Bottomside
9
8
7
6
Clearance
5
2.30
[ 58.4 ]
1.900
1.900
[ 48.26 ]
[ 48.26 ]
0.20
0.19
[ 5.1]
[ 4.8 ]
1
2
4
See Note 1
0.145 [ 3.68 ]
0.50 [12.7 ]
See Note 6
0.400 [10.16]
1.400 [ 35.56]
NOTES
PIN DESIGNATIONS
1)
M3 screws used must not exceed .085" (2.16mm) depth below
the surface of the base plate
2)
Applied torque per screw shall not exceed 6 IN-LB (0.68Nm)
3)
Base plate flatness tolerance is .004" (.10mm) TIR for surface
4)
Pins 1, 2, 4, & 6 - 8 are 0.040" (1.02mm) Dia. with 0.080"
(2.03mm) Dia. Standoff shoulders
5)
Pins 5 & 9 are 0.080" (2.03mm) Dia. with 0.125" (3.18mm) Dia.
Standoff shoulders
6)
Other pin extension lengths available.
7)
All Pins: Material - Copper Alloy
Finish (RoHS 6/6) - Matte Tin over Nickel plate
8)
Undimensioned components are shown for visual reference only.
9)
All dimensions in inches (mm)
Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
10) Weight: 3.94 oz (111.6 g) typical
Product # PQ60050HPx45
Phone 1-888-567-9596
Pin
Name
Function
1
Vin(+)
Positive input voltage
2
ON/OFF
4
5
6
7
8
9
Vin(–)
Vout(–)
SENSE(–)
TRIM
SENSE(+)
Vout(+)
www.synqor.com
TTL input to turn converter on and off, referenced
to Vin(–), with internal pull up.
Negative input voltage
Negative output voltage
Return remote sense
Output voltage trim
Positive remote sense
Positive output voltage
Doc.# 050-2HP650K Rev. D
10/09/12
Page 3
Input: 35-75V
Output: 5.0V
Current: 45A
Package: Half-brick
Technical Specifications
PQ60050HPx45 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 (C1\L\C2)
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
Back-Drive Current Limit while Enabled
Back-Drive Current Limit while Disabled
Maximum Output Capacitance
EFFICIENCY
100% Load
50% Load
Product # PQ60050HPx45
Typ.
-1
-40
-55
-2
Max.
Units Notes & Conditions
100
80
100
2000
100
125
18
V
V
V
V
°C
°C
V
35
48
75
V
31.5
29.5
2.2
33.3
31.0
2.3
34.4
32.4
2.4
7.1
120
5
0.04
V
V
V
A
mA
mA
A2s
mV
mA
mA
A
μF\μH\μF
µF
100
2
350
5
200
20
1\3\6.4
47
4.95
5.00
5.05
V
±0.05 \ 3
±0.1 \ 5
±15
±0.1 \ 5
±0.2 \ 10
±30
5.15
%\mV
%\mV
mV
V
60
10
45
55
mV
mV
A
A
V
A
mA
µF
4.85
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30
5
0
50
1.5
0
53
3.5
2.5
20
3.8
50
34,000
91
92
www.synqor.com
%
%
Continuous
Continuous
100ms transient, square wave
Basic insulation level, Pollution degree 2
100% Load, 35V Vin
1000V/ms input transient
RMS thru 10μH inductor; Figs. 13 & 15
RMS; Figs. 13 & 14
Fast blow external fuse recommended
Internal values, see Figure E
Typical ESR 0.1-0.2Ω; see Figure 13
Factory pre-set with Sense(+), Sense(-) open
Over sample, line, load, temperature & life
20MHz bandwidth; Fig. 13 & 16
Full Load, see Figures 13 & 16
Full Load, see Figures 13 & 16
Subject to thermal derating; Figs. 5-8
Output Voltage 10% Low; Fig. 17
Negative current drawn from output
Negative current drawn from output
5.0Vout at 45A Resistive Load
Figures 1 - 4
Figures 1 - 4
Doc.# 050-2HP650K Rev. D
10/09/12
Page 4
Input: 35-75V
Output: 5.0V
Current: 45A
Package: Half-brick
Technical Specifications
PQ60050HPx45 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.
Max.
Units Notes & Conditions
DYNAMIC CHARACTERISTICS
Input Voltage Ripple Rejection
60
dB
120 Hz; Fig. 20
Output Voltage during Load Current Transient
Step Change in Output Current (0.1A/µs)
200
mV
50% to 75% to 50% Iout max, 470 μF load cap
Step Change in Output Current (5A/µs)
300
mV
50% to 75% to 50% Iout max, 470 μF load cap
Settling time
100
μs
To within 1% Vout nom
Turn-On Transient
Turn-On Time
22
30
ms
Full load, Vout=90% nom; Figures 9 & 10
Start-Up Inhibit Time
180
200
240
ms
-40°C to +125°C; Figure A
Output Voltage Overshoot
0
%
10,000 μF load capacitance, Iout = 0A
ISOLATION CHARACTERISTICS
Isolation Voltage (dielectric strength)
2000
V
Isolation Resistance
30
MΩ
Isolation Capacitance (input to output)
3300
pF
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Semiconductor Junction Temperature
125
°C
Package rated to 150°C
Board Temperature
125
°C
UL rated max operating temp 130°C
Transformer Temperature
125
°C
See Figures 5 - 8 for derating curves
FEATURE CHARACTERISTICS
Switching Frequency
198
220
242
kHz
Regulation stage and Isolation stage
ON/OFF Control (Option P)
Off-State Voltage
-2
0.8
V
On-State Voltage
2.7
18
ON/OFF Control (Option N)
Off-State Voltage
2.7
18
V
On-State Voltage
-2
0.8
ON/OFF Control (Either Option)
Application notes; Figures A & B
Pull-Up Voltage
Vin/6
15.00
V
Pull-Up Resistance
42
kΩ
Output Voltage Trim Range
-20
+10
%
Measured across Pins 9 & 5; Fig C & 23
Output Voltage Remote Sense Range
Measured across Pins 9 & 5
Output Over-Voltage Protection
115
120
125
%
Over Full Temperature Range; % of nominial Vout
Over-Temperature Shutdown
120
°C
Average PCB Temperature
Over-Temperature Shutdown Restart Hysteresis
10
°C
Load Current Scale Factor
1200
See App Note: Output Load Current Calc.
RELIABILITY CHARACTERISTICS
Calculated MTBF (Telcordia)
2.13
106 Hrs. TR-NWT-000332; 75% load, 300LFM, 40°C Ta
Calculated MTBF (MIL-217)
1.3
106 Hrs. MIL-HDBK-217F; 75% load, 300LFM, 40°C Ta
Field Demonstrated MTBF
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 # PQ60050HPx45
Phone 1-888-567-9596
www.synqor.com
Doc.# 050-2HP650K Rev. D
10/09/12
Page 5
Input: 35-75V
Output: 5.0V
Current: 45A
Package: Half-brick
Technical Specifications
Standards Compliance & Qualification Testing
Parameter
Notes & Conditions
STANDARDS COMPLIANCE
UL 60950-1:2007
Basic insulation
CAN/CSA-C22.2 No. 60950-1:2007
EN60950-1:A12:2011
IEC 61000-4-2
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 # PQ60050HPx45
# Units
32
5
5
10
5
5
5
15 pins
Phone 1-888-567-9596
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.# 050-2HP650K Rev. D
10/09/12
Page 6
Input: 35-75V
Output: 5.0V
Current: 45A
Package: Half-brick
100
95
95
94
90
93
Efficiency (%)
Efficiency (%)
Technical Figures
85
80
35 Vin
75
75 Vin
0.0
4.5
9.0
13.5
18.0
22.5
27.0
31.5
36.0
40.5
91
25 C
90
48 Vin
70
92
40 C
55 C
89
0
45.0
100
400
500
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).
24
14
22
13
20
18
Power Dissipation (W)
Power Dissipation (W)
300
Air Flow (LFM)
Load Current (A)
Figure 1: Efficiency at nominal output voltage vs. load current for minimum,
nominal, and maximum input voltage at 25°C.
200
16
14
12
10
8
6
35 Vin
4
75 Vin
0
0.0
4.5
9.0
13.5
18.0
22.5
27.0
31.5
36.0
40.5
11
10
9
25 C
8
48 Vin
2
12
40 C
55 C
7
0
45.0
100
200
300
400
500
Air Flow (LFM)
Load Current (A)
Figure 3: Power dissipation at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25°C.
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).
45
40
35
Iout (A)
30
25
20
15
400 LFM (2.0 m/s)
10
200 LFM (1.0 m/s)
300 LFM (1.5 m/s)
100 LFM (0.5 m/s)
5
50 LFM (0.25 m/s)
0
0
25
40
55
70
85
Semiconductor junction temperature is
within 1°C of surface temperature
Ambient Air Temperature (oC)
Figure 5: Maximum output power derating curves vs. ambient air temperature
for airflow rates of 50 LFM through 400 LFM with air flowing from input to
output (nominal input voltage).
Product # PQ60050HPx45
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Figure 6: Thermal plot of converter at 39A load current (195W) with 55°C air
flowing at the rate of 200 LFM. Air is flowing from input to output (nominal
input voltage).
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Doc.# 050-2HP650K Rev. D
10/09/12
Page 7
Input: 35-75V
Output: 5.0V
Current: 45A
Package: Half-brick
Technical Figures
45
40
35
Iout (A)
30
25
20
15
400 LFM (2.0 m/s)
10
200 LFM (1.0 m/s)
300 LFM (1.5 m/s)
100 LFM (0.5 m/s)
5
50 LFM (0.25 m/s)
0
0
25
40
55
70
85
Ambient Air Temperature (oC)
Figure 7: Maximum output power derating curves vs. ambient air temperature
for airflow rates of 50 LFM through 400 LFM with air flowing from output to
input (nominal input voltage).
Figure 8: Thermal plot of converter at 36A load current (180W) with 55°C air
flowing at the rate of 200 LFM. Air is flowing across the converter from output
to input (nominal input voltage).
Figure 9: Turn-on transient at full load (resistive load) (10 ms/div). Input voltage
pre-applied. Top Trace: Vout (2V/div). Bottom Trace: ON/OFF input(5V/div)
Figure 10: Turn-on transient at zero load (10 ms/div). Top Trace: Vout (2V/div).
Bottom Trace: ON/OFF input (5V/div)
Figure 11: Output voltage response to step-change in load current (50%-75%50% of Iout(max); dI/dt = 0.1A/µs). Load cap: 15µF, 450mOhm ERS tantalum
cap and 1µF ceramic cap. Top trace: Vout (200mV/div). Bottom trace: Iout (20A/
div).
Figure 12: Output voltage response to step-change in load current (50%-75%50% of Iout(max): dI/dt = 5A/µs). Load cap: 470µF, 15mOhm ESR tantalum cap
and 1µF ceramic cap. Top trace: Vout (200mV/div). Bottom trace: Iout (20A/div).
Product # PQ60050HPx45
Phone 1-888-567-9596
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Doc.# 050-2HP650K Rev. D
10/09/12
Page 8
Input: 35-75V
Output: 5.0V
Current: 45A
Package: Half-brick
Technical Figures
See Fig. 15
10 µ H
See Fig. 14
source
impedance
See Fig. 16
iS
iC
V SOURCE
DC/DC
Converter
V OUT
1 µF
47 µF,
<1Ω ESR
15 µF,
450mΩ ESR
ceramic
capacitor
electrolytic
capacitor
tantalum
capacitor
Figure 13: Test set-up diagram showing measurement points for Input Terminal
Ripple Current (Figure 14), Input Reflected Ripple Current (Figure 15) and
Output Voltage Ripple (Figure 16).
Figure 14: Input Terminal Ripple Current, ic, at full rated output current and
nominal input voltage with 10µH source impedance and 47µF electrolytic
capacitor (200mA/div). (See Figure 13).
Figure 15: Input reflected ripple current, is, through a 10 µH source inductor at
nominal input voltage and rated load current (5 mA/div). (See Figure 13).
Figure 16: Output voltage ripple at nominal input voltage and rated load current
(10 mV/div). Load capacitance: 1µF ceramic capacitor and one 15µF tantalum
capacitor. Bandwidth: 20 MHz. (See Figure 13).
7
Output Voltage (V)
6
5
4
3
2
35 V
48 V
1
75 V
0
0
5
10
15
20
25
30
35
40
45
50
55
60
Load Current (A)
Figure 17: Output voltage vs. load current showing typical current limit curves
and converter shutdown points.
Product # PQ60050HPx45
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Figure 18: Load current (20A/div) as a function of time when the converter
attempts to turn on into a 1 mΩ short circuit. Top trace (2.5ms/div) is an
expansion of the on-time portion of the bottom trace.
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Doc.# 050-2HP650K Rev. D
10/09/12
Page 9
Input: 35-75V
Output: 5.0V
Current: 45A
Package: Half-brick
Technical Figures
0.1
0
0.01
35 Vin
48 Vin
75 Vin
0.001
Forward Transmission (dB)
Output Impedance (Ω)
-10
-20
-30
-40
35 Vin
-50
48 Vin
75 Vin
-60
-70
-80
-90
0.0001
10
100
1,000
10,000
-100
100,000
10
100
Hz
1,000
10,000
100,000
Hz
Figure 19: Magnitude of incremental output impedance (Zout = vout/iout) for
minimum, nominal, and maximum input voltage at full rated power.
Figure 20: Magnitude of incremental forward transmission (FT = vout/vin) for
minimum, nominal, and maximum input voltage at full rated power.
0
100
-20
35 Vin
-30
48 Vin
75 Vin
-40
Input Impedance (Ω)
Reverse Transmission (dB)
-10
10
35 Vin
48 Vin
75 Vin
1
-50
-60
10
100
1,000
10,000
0.1
100,000
10
Hz
Figure 21: Magnitude of incremental reverse transmission (RT = iin/iout) for
minimum, nominal, and maximum input voltage at full rated power.
100
1,000
Hz
10,000
100,000
Figure 22: Magnitude of incremental input impedance (Zin = vin/iin) for
minimum, nominal, and maximum input voltage at full rated power.
10
9
Vout Trim-up (%)
8
7
6
5
4
3
2
1
0
40.0
100% Load
50% Load
0% Load
39.5
39.0
38.5
38.0
37.5
37.0
36.5
36.0
35.5
35.0
Input Voltage (V)
Figure 23: Achievable trim-up percentage vs. input voltage at output loads of
0% ,50% and full load.
Product # PQ60050HPx45
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Doc.# 050-2HP650K Rev. D
10/09/12
Page 10
Input: 35-75V
Output: 5.0V
Current: 45A
Package: Half-brick
Applications Section
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
step-down 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.
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.
REMOTE SENSE(+) (Pins 8 and 6): The SENSE(+)
inputs correct for voltage drops along the conductors that
connect the converter’s output pins to the load.
Pin 8 should be connected to Vout(+) and Pin 6 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 8 and 6 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 9 and 5) to determine when
it should trigger, not the voltage across the converter’s
sense leads (pins 8 and 6). Therefore, the resistive drop on
the board should be small enough so that output OVP does
not trigger, even during load transients.
Both the first stage and the second stage switch at a fixed
frequency for predictable EMI performance. Rectification of
the transformers 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, quarter-brick and eighthbrick converters uses the industry standard footprint and
pin-out configuration.
ON/OFF
ON/OFF
ON/OFF
Vin( _)
Vin( _)
Vin( _)
Negative Logic
(Permanently
Enabled)
5V
ON/OFF
Positive Logic
(Permanently
Enabled)
Remote Enable Circuit
TTL/
CMOS
ON/OFF
5k
274k
ON/OFF
50k
50k
Vin( _)
Vin( _)
Open Collector Enable Circuit
Direct Logic Drive
Figure A: Various circuits for driving the ON/OFF pin
Product # PQ60050HPx45
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TTL
100pF
Vout(-)
Figure B: Internal ON/OFF pin circuitry
www.synqor.com
Doc.# 050-2HP650K Rev. D
10/09/12
Page 11
Input: 35-75V
Output: 5.0V
Current: 45A
Package: Half-brick
Applications Section
OUTPUT VOLTAGE TRIM (Pin 7): 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 7 and Pin 6 (SENSE(-) input). For a
desired decrease of the nominal output voltage, the value
of the resistor should be:
Rtrim-down =
(
100%
Δ
) - 2(kΩ)
where
Δ% =
|
Vnominal – Vdesired
Vnominal
| x 100%
To decrease the output voltage, the user should connect
a resistor between Pin 7 and Pin 6 (SENSE(-) input). For a
desired decrease of the nominal output voltage, the value
of the resistor should be:
Rtrim-up =
(
) x VDES + VNOM
Vnominal
1.225 - 2
VDES – VNOM
kΩ
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 overvoltage protection circuit to engage, particularly during
transients.
It is not necessary for the user to add capacitance at the
Trim pin. The node is internally bypassed to eliminate noise.
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.
Trim Resistance (kOhms)
10,000
1,000
100
10
1
0
2
4
6
8
% Increase in Vout
10
12
14
16
% Decrease in Vout
18
20
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.
Input Over-Voltage Shutdown: Available on PQ48
models only. The converter turns off when the input voltage
is too high, allowing the converter to withstand an input
voltage as high as 100V without destruction. The shutdown
circuitry is a comparator with DC hysteresis. When the input
voltage exceeds the typical Input Over-Voltage Shutdown
value, the converter will turn off. Once the converter is off,
it will turn back on when the input voltage falls below the
minimum Input Over-Voltage Shutdown value.
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.
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.
Figure C: Trim Graph 5V Module.
Product # PQ60050HPx45
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Doc.# 050-2HP650K Rev. D
10/09/12
Page 12
Input: 35-75V
Output: 5.0V
Current: 45A
Package: Half-brick
Applications 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 web
site (www.synqor.com) which provides an understanding of
why this instability arises, and shows the preferred solution
for correcting it.
Application Circuits: Figure D presented below provides
a typical circuit diagram which details the input filtering
and voltage trimming.
Input Filtering and External Input 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.
Vout(+)
Vin(+)
Vin
External
Input
Filter
Electrolytic
Capacitor
Vsense(+)
47µF
Trim
ON/OFF
Vsense(_)
Vin(_)
Rtrim-up
or
Rtrim-down
Cload
Iload
Vout(_)
Figure D: Typical application circuit (negative logic unit, permanently enabled).
L
Vin(+)
C2
C1
Vin(_)
Figure E: Internal Input Filter Diagram (component values listed on page 3).
Product # PQ60050HPx45
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Doc.# 050-2HP650K Rev. D
10/09/12
Page 13
Input: 35-75V
Output: 5.0V
Current: 45A
Package: Half-brick
Applications Section
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:
•
•
•
•
•
•
•
Input Under-Voltage Lockout.
Input Over-Voltage Shutdown (not present in Quarter-brick)
Output Over-Voltage Protection
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:
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.
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.
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.
Vin
Under-Voltage
Lockout Turn-On
Threshold
ON/OFF
(pos logic)
ON
OFF
OFF ON
ON
20ms
(typical turn on time)
Vout
200ms
200ms
(typical start-up
inhibit period)
t0
t1
200ms
t
t2
Figure F: Startup Inhibit Period (turn-on time not to scale)
Product # PQ60050HPx45
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Doc.# 050-2HP650K Rev. D
10/09/12
Page 14
Technical
Specification
PQ60050HPx45
Ordering Information
Part Numbering System
Ordering Information
The part numbering system for SynQor’s 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 characters for options.
Add “-G” to the model number for 6/6 RoHS compliance.
PQ 6 0 1 2 0 H P A 0 8 N R S - G
6/6 RoHS
Options
(see
Ordering Information)
Model Number
Input Voltage
PQ60050HPw45xyz-G
35-75V
Output
Voltage
5V
Max Output
Current
45A
Output Current
Thermal Design
The following options must be included in place of the w x y z spaces in the
model numbers listed above.
Performance Level
Options Description: w x y z
Thermal Design
Enable Logic Pin Style
Package Size
Output Voltage
A - Open Frame
B - Threaded Baseplated
Input Voltage
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.
K - 0.110"
N - 0.145"
R - 0.180"
Y - 0.250"
Feature Set
S - Standard
Not all combinations make valid part numbers, please contact SynQor for
availability. See the Product Summary web page for more options.
Application Notes
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]
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 # PQ60050HPx45
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.
www.synqor.com
Doc.# 050-2HP650K Rev. D
10/09/12
Page 15