80A/200W

Technical
Specification
PQ60025HPA80
48Vin
2.5Vout
80Amp
2000Vdc
Half-brick
Input
Output
Current
Isolation
DC/DC Converter
The PQ60025HPA80 PowerQor™ Peta half-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 maximum reliability. The Peta series converters offer
industry leading output current for a standard “halfbrick” module. RoHS 5/6 Compliant (see page 13).
PQ60025HPA80 Module
Operational Features
•Ultra-high efficiency, 90% half load, >87% full load
•Delivers up to 80 amps of output current with minimal
derating - no heatsink required
•Wide input voltage range: 35V – 75V, with 100V
100ms input voltage transient capability
•Fixed frequency switching provides predictable EMI
performance
Mechanical Features
•Industry standard pin-out configuration
•Industry standard size: 2.3” x 2.4” (58.4 x 61.0mm)
•Total height only 0.45” (11.3mm), permits better airflow and smaller card pitch
•Total weight: 2.9 oz. (83 grams)
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
Product # PQ60025HPA80
Phone 1-888-567-9596
Protection Features
• Input under-voltage lockout disables converter at low
input voltage conditions
• Output current limit and short circuit protection>
• Active back bias limit prevents damage to converter
from external load induced pre-bias
• Output over-voltage protection
• Thermal shutdown
Safety Features
•2000V, 30 MW input-to-output isolation
•UL 60950-1 recognized (US & Canada), basic insulation rating
•TUV certified to EN60950-1
•Meets 72/23/EEC and 93/68/EEC directives
•Meets UL94V-0 flammability requirements
www.synqor.com
Doc.# 005-2HP625K Rev. D
05/28/10
Page 1
Input:
Output:
Current:
Package:
Mechanical Diagram
2.40
(61.0)
1.400
(35.56)
Top View
0.200
(5.08)
1.000
(25.40)
0.700
(17.78)
8
7
1
2
1.400 (35.56)
6 5
Component
4
0.400
(10.16)
4)
5)
6)
PIN DESIGNATIONS
Pins 1, 2, 4, 7-9 are 0.040” (1.02mm) diameter, with 0.080”
(2.03mm) diameter standoff shoulders.
Pins 5-6, 10-11 are 0.080” (2.03 mm) diameter with 0.125”
(3.18mm) diameter standoff shoulders.
Other pin extension lengths available. Recommended pin
(2.03mm) diameter standoff shoulders.
All Pins: Material - Copper Alloy
Finish - Matte Tin over Nickel plate
Undimensioned components are shown for visual reference only.
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)
8)
9)
Weight: 2.9 oz. (83 g) typical
Workmanship: Meets or exceeds IPC-A-610C Class II
UL/TUV standards require a clearance greater than 0.04” 1.02mm)
between input and output for Basic insulation. This issue should be
considered if any copper traces are on the top side of the user’s
board. Note that the ferrite cores are considered part of the input/
primary circuit.
10) The flanged pins are designed to permit surface mount soldering
(allowing to avoid the wave soldering process) The flanged pins are
designed to permit surface mount soldering (allowing to avoid the
wave soldering process) through the use of the flanged pin-in-paste
technique.
Product # PQ60025HPA80
0.037+/-0.034
(0.94+/-0.86)
Bottom side
Clearance
PIN
Farside
Typical
NOTES
3)
0.145
(3.68)
See Note 3
Flanged Pin
See Note 10
Lowest
0.50 (12.7)
2)
0.45
(11.3)
1.90
(48.26)
0.19
(4.8)
1)
Side View
0.400
(10.16)
11 10 9
2.30
(58.4)
1.600
(40.64)
35-75 V
2.5 V
80 A
Half-brick
Phone 1-888-567-9596
Pin
Name
Function
1
Vin(+)
Positive input voltage
2
ON/OFF
TTL input to turn converter on and off,
referenced to Vin(–), with internal pull up.
4
Vin(–)
Negative input voltage
5
Vout(+)
Positive output voltage
6
Vout(–)
Negative remote sense
7
SENSE(–)
Negative remote sense (See note 1)
8
TRIM
Output voltage trim (See note 2)
9
SENSE(+)
Positive remote sense (See note 3)
10
Vout(+)
Positive output voltage
11
Vout(-)
Negative output voltage
Notes:
1)
SENSE(–) should be connected to Vout(–) either remotely or at the
converter.
2)
Leave TRIM pin open for nominal output voltage.
3)
www.synqor.com
SENSE(+) should be connected to Vout(+) either remotely or at the
converter.
Doc.# 005-2HP625K Rev. D
05/28/10
Page 2
Input:
Output:
Current:
Package:
Technical Specification
35-75 V
2.5 V
80 A
Half-brick
PQ60025HPA80 ELECTRICAL CHARACTERISTICS
TA=25°C, airflow rate=300 LFM, Vin=48Vdc unless otherwise noted; full operating temperature range is -40°C to +100°C ambient
temperature with appropriate power derating. Specifications subject to change without notice.
Parameter 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 Noise1
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
DYNAMIC CHARACTERISTICS
Input Voltage Ripple Rejection
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
Turn-On Transient
Turn-On Time
Start-Up Inhibit Time
Output Voltage Overshoot
Min.
Typ.
Max.
-40
-55
-2
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
80
2
0.04
525
5
230
1\3\6.4
47
34.4
32.4
2.4
7.2
100
5
20
2.500
2.525
2.475
2.425
0
84
1
0
+0.05 \ 1 +0.1 \ 3
+0.1 \ 3 +0.2 \ 5
+15
+30
2.575
25
50
10
20
80
92
96
1.3
2
4.5
10
50
30,000
Units Notes & Conditions
Continuous
Continuous
100ms transient, square wave
Basic insulation level, Pollution degree 2
V
V
V
A
100% Load, 35 Vin
mA
mA
A 2s
mV
1000V/ms input transient
mA
RMS thru 10µH inductor; Figures 13 & 15
mA
RMS; Figures 13 & 14
A
Fast blow external fuse recommended
µF\µH\µF Internal values, see Figure E
µF
Typical ESR 0.1-0.2W, see Figure 13
V
%\mV
%\mV
mV
V
mV
mV
A
A
V
A
mA
µF
Over sample, line, load, temperature & life
20MHz bandwidth; Figures 13 & 16
Full Load; see Figures 13 & 16
Full Load; see Figures 13 & 16
Subject to thermal derating; Figures 5 - 8
Output Voltage 10% Low; Figure 17
Negative current drawn from output
Negative current drawn from output
2.5Vout at 80A Resistive Load
70
80
250
100
dB
mV
mV
µs
50% to 75% to 50% Iout max; Figure 11
50% to 75% to 50% Iout max; Figure 12
To within 1% Vout nom
16
180
20
200
0
24
240
ms
ms
%
Full load, Vout=90% nom; Figures 9 & 10
-40°C to +125°C; Figure F
10,000 µF load capacitance, Iout = 0A
100% Load
50% Load
87.5
90
%
%
Figures 1 - 4
Figures 1 - 4
Semiconductor Junction Temperature
Board Temperature
Transformer Temperature
125
125
125
°C
°C
°C
Package rated to 150°C
UL rated max operating temp 130°C
See Figures 5 - 8 for derating curves
Isolation Voltage (dielectric strength)
Isolation Resistance
Isolation Capacitance2
2000
30
3300
V
MW
pF
EFFICIENCY
TEMPERATURE LIMITS FOR POWER DERATING CURVES
ISOLATION CHARACTERISTICS
120 Hz; Figure 20
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 # PQ60025HPA80
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HP625K Rev. D
05/28/10
Page 3
Input:
Output:
Current:
Package:
Technical Specification
35-75 V
2.5 V
80 A
Half-brick
ELECTRICAL CHARACTERISTICS (Continued)
Parameter P
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control (Option P)
Off-State Voltage On-State Voltage
ON/OFF Control (Option N)
Off-State Voltage
On-State Voltage
ON/OFF Control (Either Option)
Pull-Up Voltage
Pull-Up Resistance
Output Voltage Trim Range
Output Voltage Remote Sense Range
Output Over-Voltage Protection
Over-Temperature Shutdown
Over-Temperature Shutdown Restart Hysteresis
Load Current Scale Factor
RELIABILITY CHARACTERISTICS
Calculated MTBF (Telcordia)
Calculated MTBF (MIL-217)
Field Demonstrated MTBF
Min.
Typ.
Max.
Units Notes & Conditions
190
210
230
kHz
-2
2.7
0.8
18
V
V
2.7
-2
-20
120
Vin/6
42
125
120
10
2200
18
0.8
15
+10
+10
130
V
V
V
kW
%
%
%
°C
°C
2.2
1.4
Regulation and Isolation stages
Figures A & B
Measured across Pins 10 & 5; Figure C
Measured across Pins 10 & 5
Over full temp range; % of nominal Vout
Average PCB Temperature
See App Note: Output Load Current Calc.
10 Hrs. TR-NWT-000332; 75% load,300LFM, 40oC Ta
106 Hrs. MIL-HDBK-217F; 75% load, 300LFM, 40oC Ta
106 Hrs. See our website for details
6
STANDARDS COMPLIANCE
Parameter P
Notes
File # E194341, Basic insulation & pollution degree 2
Certified by TUV
STANDARDS COMPLIANCE
UL/cUL 60950-1 EN60950-1 72/23/EEC
93/68/EEC
Needle Flame Test (IEC 695-2-2)
IEC 61000-4-2
GR-1089-CORE
Telcordia (Bellcore) GR-513
Test on entire assembly; board & plastic components UL94V-0 compliant
ESD test, 8kV - NP, 15kV air - NP (Normal Performance)
Section 7 - electrical safety, Section 9 - bonding/grounding
• 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
QUALIFICATION TESTING
Life Test
Vibration
Mechanical Shock
Temperature Cycling
Power/Thermal Cycling
Design Marginality
Humidity
Solderability
# Units
32
5
5
10
5
5
5
15 pins
Test Conditions
95% rated Vin and load, units at derating point, 1000 hours
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, 2 minutes on and 6 hours off
MIL-STD-883, method 2003
• Extensive characterization testing of all SynQor products and manufacturing processes is performed to ensure that we supply
robust, reliable product. Contact the factory for official product family qualification documents.
OPTIONS
SynQor provides various options for Logic Sense, Pin Length and Feature Set for this family of DC/DC converters. Please consult the
last page of this specification sheet for information on available options.
Product # PQ60025HPA80
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HP625K Rev. D
05/28/10
Page 4
Input:
Output:
Current:
Package:
Technical Specification
35-75 V
2.5 V
80 A
Half-brick
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).
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).
Figure 5: Maximum output power derating curves vs. ambient air temperature for airflow rates of 0 LFM through 400 LFM with air flowing
from input to output (nominal input voltage).
Figure 6: Thermal plot of converter at 59 amp load current with 55°C
air flowing at the rate of 200 LFM. Air is flowing across the converter
from input to output (nominal input voltage).
Semiconductor junction temperature is
within 1°C of surface temperature
Figure 1: Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25°C.
Product # PQ60025HPA80
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HP625K Rev. D
05/28/10
Page 5
Input:
Output:
Current:
Package:
Semiconductor junction temperature is
within 1°C of surface temperature
Technical Specification
35-75 V
2.5 V
80 A
Half-brick
Figure 7: Maximum output power derating curves vs. ambient air temperature for airflow rates of 0 LFM through 400 LFM with air flowing
from output to input (nominal input voltage).
Figure 8: Thermal plot of converter at 58 amp load current 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 (1V/div). Bottom Trace:
ON/OFF input (5V/div)
Figure 10: Turn-on transient at zero load (10 ms/div).
Top Trace: Vout (1V/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, 450 mW ESR tantalum cap
Figure 12: Output voltage response to step-change in load current (50%-75%50% of Iout(max): dI/dt = 5A/µs). Load cap: 480µF, 15 mW ESR tantalum cap
and 1µF ceramic cap. Top trace: Vout (100mV/div), Bottom trace: Iout (50A/div).
Product # PQ60025HPA80
Phone 1-888-567-9596
and 1µF ceramic cap. Top trace: Vout (200mV/div), Bottom trace: Iout (50A/div).
www.synqor.com
Doc.# 005-2HP625K Rev. D
05/28/10
Page 6
Input:
Output:
Current:
Package:
Technical Specification
Input
Reflected
Ripple
Current
10 µH
source
impedance
Input
Terminal
Ripple
Current
iS i S
iC
35-75 V
2.5 V
80 A
Half-brick
Output
Voltage
Ripple
DC-DC
Converter
VOUT
VSOURCE
electrolytic
capacitor
1 µF
47 µF, <1W ESR
ceramic
capacitor
tantalum
capacitor
15 µF, 450mW ESR
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 (200 mA/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 (20 mV/div). Load capacitance: 1µF ceramic capacitor
and 15µF tantalum capacitor. Bandwidth: 20 MHz. (See Figure 13)
Figure 17: Output voltage vs. load current showing typical current limit
curves and converter shutdown points.
Figure 18: Load current (20A/div) as a function of time when the converter attempts to turn on into a 1 mW short circuit. Top trace (2ms/
div) is an expansion of the on-time portion of the bottom trace.
Product # PQ60025HPA80
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HP625K Rev. D
05/28/10
Page 7
Input:
Output:
Current:
Package:
Technical Specification
35-75 V
2.5 V
80 A
Half-brick
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.
Figure 21: Magnitude of incremental reverse transmission (RT = iin/
iout) for minimum, nominal, and maximum input voltage at full rated
power.
Figure 22: Magnitude of incremental input impedance (Zin = vin/iin)
for minimum, nominal, and maximum input voltage at full rated power.
Figure 23: Achievable trim-up percentage vs. input voltage. at +80oC,
+25oC and -40oC (all at full load). Full trim-up percentage is achieved
at loads of 50% or less across full temperature and input voltage range.
Product # PQ60025HPA80
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HP625K Rev. D
05/28/10
Page 8
Input:
Output:
Current:
Package:
Technical Specification
35-75 V
2.5 V
80 A
Half-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 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.
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, quarter-brick and eighth-brick
converters uses the industry standard footprint and pin-out configuration.
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 9 and 7): The SENSE(+) inputs
correct for voltage drops along the conductors that connect the
converter’s output pins to the load.
Pin 9 should be connected to Vout(+) and Pin 7 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 9 and 7 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 11 and 5) to determine when it should
trigger, not the voltage across the converter’s sense leads (pins
9 and 7). Therefore, the resistive drop on the board should be
small enough so that output OVP does not trigger, even during
load transients.
ON/OFF
ON/OFF
ON/OFF
5V
Vin(+)
Vin(_)
Vin(_)
Remote Enable Circuit
Negative Logic
(Permanently
Enabled)
5V
ON/OFF
TTL/
CMOS
Vin(_)
Positive Logic
(Permanently
Enabled)
274k
ON/OFF
TTL
ON/OFF
100pF
50k
Vin(_)
Vin(_)
Open Collector Enable Circuit
Vin(_)
Direct Logic Drive
Figure A: Various circuits for driving the ON/OFF pin.
Product # PQ60025HPA80
50k
Phone 1-888-567-9596
www.synqor.com
Figure B: Internal ON/OFF pin circuitry
Doc.# 005-2HP625K Rev. D
05/28/10
Page 9
Input:
Output:
Current:
Package:
Technical Specification
OUTPUT VOLTAGE TRIM (Pin 8): 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 8 and Pin 7 (SENSE(-) input). For a desired decrease
of the nominal output voltage, the value of the resistor should be
Rtrim-down =
- 2 (kW)
(100%
D )
where
D% =
Vnominal – Vdesired
Vnominal
x 100%
To increase the output voltage, the user should connect a resistor
between Pin 8 and Pin 9 (SENSE(+) input). For a desired increase
of the nominal output voltage, the value of the resistor should be
Rtrim-up =
(
)
Vnominal – 2
x VDES + VNOM
1.225
VDES - VNOM
(kW)
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)
1,000
35-75 V
2.5 V
80 A
Half-brick
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” on the SynQor
website. 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.
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.
100
10
1
0
2
4
6
8
10
% Increase in Vout
12
14
16
18
20
% Decrease in Vout
Figure C: Trim Graph for 2.5Vout module
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.
It is not necessary for the user to add capacitance at the Trim pin.
The node is internally bypassed to eliminate noise.
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.
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.
Product # PQ60025HPA80
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HP625K Rev. D
05/28/10
Page 10
Input:
Output:
Current:
Package:
Technical Specification
APPLICATION CONSIDERATIONS
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 on the Electrical
Specifications page. More detailed information is available in
the application note titled “EMI Characteristics” on the SynQor
website.
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.
Application Circuits: Figure D below provides a typical circuit
diagram which details the input filtering and voltage trimming.
Vin(+)
Vin
Electrolytic
Capacitor
External
Input
Filter
47µF
35-75 V
2.5 V
80 A
Half-brick
Vout(+)
Vsense(+)
ON/OFF
Trim
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 # PQ60025HPA80
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HP625K Rev. D
05/28/10
Page 11
Input:
Output:
Current:
Package:
Technical Specification
35-75 V
2.5 V
80 A
Half-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:
Vin
Under-Voltage
Lockout Turn-On
Threshold
ON/OFF
(pos logic)
ON
OFF ON
OFF
ON
20ms (typical
Vout
turn on time)
200ms
(typical start-up
inhibit period)
t1
t0
200ms
200ms
t2
t
Figure F: Startup Inhibit Period (turn-on time not to scale)
Product # PQ60025HPA80
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HP625K Rev. D
05/28/10
Page 12
Input:
Output:
Current:
Package:
Technical Specification
PART NUMBERING SYSTEM
ORDERING INFORMATION
The part numbering system for SynQor’s PowerQor DC/DC
converters follows the format shown in the example below.
The tables below show the valid model numbers and ordering
options for converters in this product family. When ordering
SynQor converters, please ensure that you use the complete
15 character part number consisting of the 12 character base
part number and the additional 3 characters for options.
P Q 6 0 0 2 5 H P A 8 0 N N S - G
Options
(see
Ordering Information)
Model Number
Input
Voltage
Output
Voltage
Max Output
Current
PQ60012HPAA0xyz
35 - 75V
1.2V
100A
PQ60015HPAA0xyz
35 - 75V
1.5V
100A
PQ60018HPAA0xyz
35 - 75V
1.8V
100A
PQ60018HPA80xyz
35 - 75V
1.8V
80A
PQ60025HPA80xyz
35 - 75V
2.5V
80A
PQ60033HPA70xyz
35 - 75V
3.3V
70A
PQ60050HPA45xyz
35 - 75V
5.0V
45A
PQ60012HPA20xyz
35 - 75V
12V
20A
Output Current
Thermal Design
Performance Level
Package Size
Output Voltage
Input Voltage
Product Family
The first 12 characters comprise the base part number and the
last 3 characters indicate available options. Although there
are no default values for enable logic and pin length, the most
common options are negative logic and 0.145” pins. These
part numbers are more likely to be readily available in stock
for evaluation and prototype quantities.
The following option choices must be included in place of the
x y z spaces in the model numbers listed above.
Options Description: x y z
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. SynQor products are currently 5/6 RoHS compliant
with lead being the exception. For more information please visit
our RoHS Compliance / Lead Free Initiative web page or e-mail us at [email protected]
Contact SynQor for further information:
35-75 V
2.5 V
80 A
Half-brick
Phone:
Toll Free:
Fax:
E-mail:
Web:
Address:
Product # PQ60025HPA80
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
Enable Logic
Pin Style
Feature Set
P - Positive
N - Negative
K - 0.110"
N - 0.145"
R - 0.180"
Y - 0.250"
S - Standard
F - Full Feature
(1.2-1.8W only)
PATENTS
SynQor holds the following U.S. patents, one or more of which apply to
each product listed in this document. Additional patent applications may
be pending or filed in the future.
5,999,417
6,222,742
6,545,890
6,577,109
6,594,159
6,731,520
6,894,468
6,896,526
6,927,987
7,050,309
7,072,190
7,085,146
7,119,524
7,269,034
7,272,021
7,272,023
7,558,083
7,564,702
See the technical addendum on the website for additional
specifications on the baseplated versions of converters.
Warranty
SynQor offers a three (3) year limited warranty. Complete warranty information is listed on our website or is available upon request from SynQor.
Information furnished by SynQor is believed to be accurate and reliable. However, no responsibility is assumed by SynQor for its use, nor for any
infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any
patent or patent rights of SynQor.
www.synqor.com
Doc.# 005-2HP625K Rev. D
05/28/10
Page 13
Similar pages