PQ60010EGA20NNS [SYNQOR]
DC-DC Regulated Power Supply Module, 1 Output, Hybrid,;
| 型号： | PQ60010EGA20NNS |
| 厂家： | 
SYNQOR WORLDWIDE HEADQUARTERS |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, Hybrid, |
| 文件： | 总13页 (文件大小：545K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Technical
Specification
PQ60010EGL20
48Vin 1.0Vout 20Amp 2000Vdc
Eighth-brick
DC/DC Converter
Input
Output
Current
Isolation
™
The PQ60010EGL20 PowerQor Giga eighth-brick con-
verter is a next-generation, board-mountable, isolated, fixed
switching frequency DC/DC converter that uses synchro-
nous rectification to achieve extremely high conversion effi-
ciency. The power dissipated by the converter is so low that
a heatsink is not required, which saves cost, weight, height,
and application effort. AAll of the power and control com-
ponents are mounted to the multi-layer PCB substrate with
high-yield surface mount technology. Since the PowerQor
converter has no explicit thermal interfaces, it is eextremely
reliable.
Operational Features
PQ60010EGL20 Module
• High efficiency, up to 82% at 1.0Vout
• Delivers up to 20 amps of output current with minimal
Protection Features
derating - no heatsink required
• Wide input voltage range: 35V – 75V, with 100V
100ms input voltage transient capability
• Input under-voltage lockout disables converter at low
input voltage conditions
• Output current limit and short circuit protection protects
converter and load from permanent damage and conse-
quent hazardous conditions
• Fixed frequency switching provides predictable EMI
performance
• No minimum load requirement means no preload
resistors required
• Active back bias limit prevents damage to converter
from external load induced pre-bias
• Output over-voltage protection protects load from dam-
aging voltages
Mechanical Features
• Thermal shutdown protects converter from abnormal
• Industry standard eighth-brick pin-out configuration
• Industry standard size: 0.90” x 2.3” (22.9x58.4mm)
environmental conditions
• Total height only 0.335” (8.5mm), permits better airflow
and smaller card pitch
• Total weight: 0.68 oz. (19 grams)
Safety Features
• 2000V, 30 MΩ input-to-output isolation provides
• Flanged pins designed to permit surface mount solder-
input/output ground separation
ing (avoid wave solder) using FPiP technique
• UL 1950 recognized (US & Canada), basic insulation
rating
Control Features
• TUV certified to EN60950
• Meets 72/23/EEC and 93/68/EEC directives which
• On/Off control referenced to input side (positive and
negative logic options are available)
facilitates CE Marking in user’s end product
• Board and plastic components meet UL94V-0 flammabil-
ity requirements
• Remote sense for the output voltage compensates for
output distribution drops
• Output voltage trim permits custom voltages and voltage
margining
Product # PQ60010EGL20
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2EG601G Rev. A
12/14/04
Page 1
Input:
Output:
Current:
Package:
35-75 V
1.0 V
20 A
Eighth-brick
Technical Specification
MECHANICAL
DIAGRAM
2.30
(58.42)
0.14
(3.56)
0.150
(3.81)
2.00
0.150
(3.81)
(50.8)
0.300
(7.62)
0.300
(7.62)
0.450
Top View
0.600
(11.43)
0.600
(15.24)
0.90
(15.24)
(22.86)
EGA Option
0.424 (10.76)
max height
See Note 9
0.335
(8.5)
Bottom side
Clearance
See Note 9
Side View
0.019 +0.013
(0.48 +0.33)
Lowest
Component
Flanged Pin
See Note 10
Load Board
EGA Option
0.076 (1.93)
min clearance
See Note 9
0.110
(2.79)
See Note 3
NOTES
PIN DESIGNATIONS
1) Pins 1-3, 5-7 are 0.040” (1.02mm) diameter. with 0.080”
(2.03mm) diameter standoff shoulders.
Pin No. Name
Function
1
2
Vin(+)
Positive input voltage
2) Pins 4 and 8 are 0.062” (1.57 mm) diameter with 0.100”
(2.54 mm) diameter standoff shoulders.
ON/OFF
TTL input to turn converter
on and off, referenced to
Vin(-), with internal pull up.
3) Other pin extension lengths available. Recommended pin
length is 0.03” (0.76mm) greater than the PCB thickness.
4) All Pins: Material - Copper Alloy
Finish - Tin/Lead over Nickel plate
3
4
5
6
7
8
Vin(-)
Vout(-)
SENSE(-)
TRIM
SENSE(+)
Vout(+)
Negative input voltage
Negative output voltage
Negative remote sense1
Output voltage trim2
Positive remote sense3
Positive output voltage
5) Undimensioned components are shown for visual reference
only.
6) All dimensions in inches (mm)
Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
7) Weight: 0.68 oz. (19 g) typical
8) Workmanship: Meets or exceeds IPC-A-610C Class II
Notes:
9) Modules can be ordered as EGA option that have different
pins to provide a minimum bottom side clearance of 0.076”
while increasing maximum height to 0.424”. See ordering
page for more information.
10) The flanged pins are designed to permit surface mount
soldeing (avoiding the wave soldering process) through
the use of the flanged pin-in-paste technique.
1. SENSE(-) may be connected to Vout(-) or left open.
2. Leave TRIM pin open for nominal output voltage.
3. SENSE(+) may be connected to Vout(+) or left open.
Product # PQ60010EGL20
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2EG601G Rev. A
12/14/04
Page 2
Input:
Output:
Current:
Package:
35-75 V
1.0 V
20 A
Eighth-brick
Technical Specification
PQ60010EGL20 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 tem-
perature with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
Max.
Units Notes & Conditions
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
100
80
V
V
continuous
Operating
continuous
Operating Transient Protection
100
2000
100
125
18
V
100ms transient, square wave
Basic insulation, Pollution Degree 2
Isolation Voltage (input to output)
Operating Temperature
V
-40
-55
-2
°C
°C
V
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
35
48
75
V
32
28.5
2.5
33
29.5
3.5
34
30.5
4.5
0.8
40
V
V
V
A
100% Load, 35 Vin
No-Load Input Current
20
mA
mA
Disabled Input Current
1.6
3
2
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
0.01
A s
150
7
mV
mA
mA
A
1000V/ms input transient
RMS thru 10µH inductor; Figures 13 & 15
RMS; Figures 13 & 14
115
7
fast blow external fuse recommended
4.7\2.46
47
µH\µF internal values, see Figure E
µF
V
Typical ESR 0.1-0.2Ω, see Figure 13
0.98
0.96
1.00
1.02
+
+
+
+
0.5 \ 5
0.5 \ 5
1.0 \ 10
1.0 \ 10
%\mV
%\mV
mV
Over Load
+
+
30
Over Temperature
20
Total Output Voltage Range
1.04
V
over sample, line, load, temperature & life
20MHz bandwidth; Figures 13 & 16
Full Load, see Figures 13 & 16
1
Output Voltage Ripple and Noise
Peak-to-Peak
30
60
15
mV
mV
A
RMS
7.5
Full Load, see Figures 13 & 16
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
0
20
Subject to thermal derating; Figures 5-8
Output Voltage 10% Low; Figure 17
21.5
23.5
0.55
0.65
10
25.5
A
V
A
Negative current drawn from output
Negative current drawn from output
1.0Vout at 20A Resistive Load
mA
µF
20,000
80
dB
120 Hz; Figure 20
65
65
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
400
Turn-On Transient
Turn-On Time
23
235
0
30
ms
ms
%
Full load, Vout=90% nom.; Figures 9 & 10
-40°C to +125°C; Figure F
Start-Up Inhibit Time
220
240
Output Voltage Overshoot
EFFICIENCY
20,000 µF load capacitance, Iout = 0A
100% Load
80
82
%
%
Figures 1 - 4
Figures 1 - 4
50% Load
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Semiconductor Junction Temperature
Board 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
Transformer Temperature
ISOLATION CHARACTERISTICS
Isolation Voltage (dielectric strength)
Isolation Resistance
2000
30
V
M
Ω
Isolation Capacitance2
470
pF
Note 1: For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: support@synqor.com)
Note 2: Higher values of isolation capacitance can be added external to the module.
Product # PQ60010EGL20
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2EG601G Rev. A
12/14/04
Page 3
Input:
Output:
Current:
Package:
35-75 V
1.0 V
20 A
Eighth-brick
Technical Specification
ELECTRICAL CHARACTERISTICS (Continued)
Parameter
P
Min.
Typ.
Max.
Units Notes & Conditions
FEATURE CHARACTERISTICS
Switching Frequency
190
220
250
kHz
Regulation and Isolation stages
ON/OFF Control (Option P)
Off-State Voltage
-2
0.8
18
V
V
On-State Voltage
2.4
ON/OFF Control (Option N)
Off-State Voltage
2.4
-2
18
V
V
On-State Voltage
0.8
ON/OFF Control (Either Option)
Pull-Up Voltage
Figures A, B
Vin/6
40
15
V
Pull-Up Resistance
k
Ω
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
-10
+10
+10
128
%
Measured across Pins 8 & 4; Figure C
Measured across Pins 8 & 4
%
%
118
123
125
10
Over full temp range; % of nominal Vout
Average PCB Temperature
°C
°C
550
See App Note: Output Load Current Calc.
o
2.5
1.1
106 Hrs. TR-NWT-000332; 80% load,300LFM, 40 C T
a
a
106 Hrs. MIL-HDBK-217F; 80% load, 300LFM, 40 C T
o
106 Hrs. See website for latest values
STANDARDS COMPLIANCE
Parameter
P
Notes
STANDARDS COMPLIANCE
UL/cUL 60950
File # E194341, Basic insulation & pollution degree 2
Certified by TUV
EN60950
72/23/EEC
93/68/EEC
Needle Flame Test (IEC 695-2-2)
IEC 61000-4-2
test on entire assembly; board & plastic components UL94V-0 compliant
ESD test, 8kV - NP, 15kV air - NP (Normal Performance)
GR-1089-CORE
Section 7 - electrical safety, Section 9 - bonding/grounding
Telcordia (Bellcore) GR-513
•
An external input fuse must always be used to meet these safety requirements. Contact SynQor for official safety
certificates on new releases or download from the SynQor website.
QUALIFICATION TESTING
Parameter
P
# Units Test Conditions
QUALIFICATION TESTING
Life Test
32
95% rated Vin and load, units at derating point, 1000 hours
Vibration
5
10-55Hz sweep, 0.060” total excursion,1 min./sweep, 120 sweeps for 3 axis
100g minimum, 2 drops in x and y axis, 1 drop in z axis
-40°C to 100°C, unit temp. ramp 15°C/min., 500 cycles
Toperating = min to max, Vin = min to max, full load, 100 cycles
Tmin-10°C to Tmax+10°C, 5°C steps, Vin = min to max, 0-105% load
85°C, 85% RH, 1000 hours, 2 minutes on and 6 hours off
MIL-STD-883, method 2003
Mechanical Shock
Temperature Cycling
Power/Thermal Cycling
Design Marginality
Humidity
5
10
5
5
5
Solderability
15 pins
•
Extensive characterization testing of all SynQor products and manufacturing processes is performed to ensure that we supply
robust, reliable product. Contact factory for official product family qualification document.
OPTIONS
PATENTS
SynQor provides various options for Enable Logic and Pin Length SynQor is protected under various patents, including but not lim-
for this family of DC/DC converters. Please consult the last page ited to U.S. Patent numbers 5,999,417; 6,222,742 B1;
of this specification sheet for information on available options.
6,594,159 B2; 6,545,890 B2.
Product # PQ60010EGL20
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2EG601G Rev. A
12/14/04
Page 4
Input:
Output:
Current:
Package:
35-75 V
1.0 V
20 A
Eighth-brick
Technical Specification
90
85
80
75
70
65
60
84
83
82
81
80
79
78
25 C
40 C
55 C
35 Vin
48 Vin
75 Vin
0.0
2.5
5.0
7.5
10.0
12.5
15.0
17.5
20.0
0
100
200
300
400
500
Load Current (A)
Air Flow (LFM)
Figure 1: Efficiency at nominal output voltage vs. load current for min-
Figure 2: Efficiency at nominal output voltage and 60% rated power vs.
imum, nominal, and maximum input voltage at 25
°C.
airflow rate for ambient air temperatures of 25
(nominal input voltage).
°C, 40°C, and 55°C
6
5
4
3
2
1
0
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
35 Vin
48 Vin
75 Vin
25 C
40 C
55 C
0.0
2.5
5.0
7.5
10.0
12.5
15.0
17.5
20.0
0
100
200
Air Flow (LFM)
300
400
500
Load Current (A)
Figure 3: Power dissipation at nominal output voltage vs. load current
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).
for minimum, nominal, and maximum input voltage at 25
°C.
°
°
°
20
18
16
14
12
10
8
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
6
4
2
0
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
50 LFM (0.25 m/s)
Semiconductor junction temperature
is within 1 C of surface temperature
0
25
40
55
70
85
°
Ambient Air Temperature (oC)
Figure 5: Maximum output power derating curves vs. ambient air tem-
perature for airflow rates of 50 LFM through 400 LFM with air flowing
across the converter from pin 3 to pin 1 (nominal input voltage).
Figure 6: Thermal plot of converter at 20 amp load current with 55°C
air flowing at the rate of 200 LFM. Air is flowing across the converter
from pin 3 to pin 1 (nominal input voltage).
Product # PQ60010EGL20
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2EG601G Rev. A
12/14/04
Page 5
Input:
Output:
Current:
Package:
35-75 V
1.0 V
20 A
Eighth-brick
Technical Specification
20
18
16
14
12
10
8
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
6
4
2
0
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
50 LFM (0.25 m/s)
Semiconductor junction temperature is
within 1 C of surface temperature
0
25
40
55
70
85
°
Ambient Air Temperature (oC)
Figure 7: Maximum output power-derating curves vs. ambient air tem-
perature for airflow rates of 50 LFM through 400 LFM with air flowing
from input to output (nominal input voltage).
Figure 8: Thermal plot of converter at 20 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).
Figure 9: Turn-on transient at full load (resistive load) (20 ms/div).
Input voltage pre-applied. Ch 1: Vout (500mV/div). Ch 2: ON/OFF
input (5V/div)
Figure 10: Turn-on transient at zero load (20 ms/div). Ch 1: Vout
(500mV/div). Ch 2: ON/OFF input (5V/div).
Figure 11: Output voltage response to step-change in load current (50%-
Figure 12: Output voltage response to step-change in load current (50%-
75%-50% of Iout(max); dI/dt = 0.1A/
µ
s). Load cap: 10
µ
F, 100 m
Ω
ESR tan-
75%-50% of Iout(max): dI/dt = 5A/µs). Load cap: 470µF, 30 mΩ ESR tanta-
talum cap and 1µF ceramic cap. Ch 1: Vout (50mV/div), Ch 2: Iout (5A/div).
lum cap and 1
µF ceramic cap. Ch 1: Vout (200mV/div), Ch 2: Iout (5A/div).
Product # PQ60010EGL20
Phone 1-888-567-9596 www.synqor.com
Doc.# 005-2EG601G Rev. A
12/14/04 Page 6
Input:
Output:
Current:
Package:
35-75 V
1.0 V
20 A
Eighth-brick
Technical Specification
See Fig. 15
10 µH
See Fig. 14
source
impedance
See Fig. 16
iS
iC
DC/DC
Converter
VOUT
VSOURCE
10
µ
Ω
F,
ESR
1 µF
47 µF,
ceramic
100m
<1
Ω ESR
capacitor
tantalum
electrolytic
capacitor
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, i , at full rated output cur-
c
rent and nominal input voltage with 10
µH source impedance and 47µF
electrolytic capacitor (200 mA/div). See Figure 13.
Figure 15: Input Reflected Ripple Current, i , through a 10 µH source
Figure 16: Output Voltage Ripple at nominal input voltage and rated
load current (20 mV/div). Load capacitance: 1 F ceramic capacitor
and 10 F tantalum capacitor. Bandwidth: 20 MHz. See Figure 13.
s
inductor at nominal input voltage and rated load current (5 mA/div).
See Figure 13.
µ
µ
1.2
1.0
0.8
0.6
0.4
35 V
48 V
75 V
0.2
0.0
0
5
10
15
20
25
Load Current (A)
Figure 17: Output voltage vs. load current showing typical current limit
Figure 18: Load current (10A/div) as a function of time when the con-
verter attempts to turn on into a 10 m short circuit. Top trace
(4.0ms/div) is an expansion of the on-time portion of the bottom trace.
curves and converter shutdown points.
Ω
Product # PQ60010EGL20
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2EG601G Rev. A
12/14/04
Page 7
Input:
Output:
Current:
Package:
35-75 V
1.0 V
20 A
Eighth-brick
Technical Specification
0.1
-30
-40
-50
0.01
0.001
-60
35 Vin
48 Vin
75 Vin
35 Vin
48 Vin
75 Vin
-70
-80
-90
-100
-110
0.0001
100
1,000
10,000
100,000
10
100
1,000
Hz
10,000
100,000
Hz
Figure 19: Magnitude of incremental output impedance (Z
=
Figure 20: Magnitude of incremental forward transmission (FT =
out
v
/i ) for minimum, nominal, and maximum input voltage at full
v
/v ) for minimum, nominal, and maximum input voltage at full
out in
out out
rated power.
rated power.
0
-10
-20
-30
-40
-50
1000
100
10
1
35 Vin
48 Vin
75 Vin
35 Vin
48 Vin
75 Vin
-60
10
0.1
10
100
1,000
Hz
10,000
100,000
100
1,000
Hz
10,000
100,000
Figure 21: Magnitude of incremental reverse transmission (RT =
Figure 22: Magnitude of incremental input impedance (Z = v /i )
in in in
i
/i ) for minimum, nominal, and maximum input voltage at full rated
for minimum, nominal, and maximum input voltage at full rated power.
in out
power.
Product # PQ60010EGL20
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2EG601G Rev. A
12/14/04
Page 8
Input:
Output:
Current:
Package:
35-75 V
1.0 V
20 A
Eighth-brick
Technical Specification
BASIC OPERATION AND FEATURES
CONTROL FEATURES
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,
are two versions of the converter that differ by the sense of the
logic used for the ON/OFF input.
The PowerQor series converter uses a two-stage power conver-
sion topology. The first stage is a buck-converter that keeps the
output voltage constant over variations in line, load, and temper-
ature. The second stage uses a transformer to provide the func-
tions of input/output isolation and voltage step-down to achieve
the low output voltage required.
Vin(-). There
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 inter-
nal ON/OFF circuitry.
Both the first stage and the second stage switch at a fixed fre-
quency 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 resis-
tance, dissipate far less energy than Schottky diodes. This is the
primary reason that the PowerQor converter has such high effi-
ciency, even at very low output voltages and very high output cur-
rents.
REMOTE SENSE(+) (Pins 7 and 5): The SENSE(+) inputs cor-
rect for voltage drops along the conductors that connect the con-
verter’s output pins to the load.
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 pot-
ting 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.
Pin 7 should be connected to Vout(+) and Pin 5 should be con-
nected 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
The PowerQor series of eighth-brick, quarter-brick and half-brick
converters uses the industry standard footprint and pin-out con-
figuration.
Pins 7 and 5 must be connected for proper regulation of the out-
put voltage. If these connections are not made, the converter will
deliver an output voltage that is slightly lower than its specified
value.
Note: the output over-voltage protection circuit senses the voltage
ON/OFF
ON/OFF
ON/OFF
_
_
_
Vin( )
Vin( )
Vin( )
Vin(+)
5V
Positive Logic
(Permanently Enabled)
Negative Logic
(Permanently Enabled)
Remote Enable Circuit
274k
5V
ON/OFF
ON/OFF
50k
TTL
TTL/
CMOS
ON/OFF
100pF
50k
_
Vin( )
_
_
Vin( )
Vin( )
Open Collector Enable Circuit
Direct Logic Drive
Figure A: Various circuits for driving the ON/OFF pin.
Figure B: Internal ON/OFF pin circuitry
Product # PQ60010EGL20
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2EG601G Rev. A
12/14/04
Page 9
Input:
Output:
Current:
Package:
35-75 V
1.0 V
20 A
Eighth-brick
Technical Specification
across the output (pins 8 and 4) to determine when it should trig-
ger, 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.
output voltage too high may cause the over-voltage protection cir-
cuit 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.
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). To increase the output
voltage, the user should connect a resistor between Pin 6 and Pin
7 (SENSE(+) input). For a desired change of the nominal output
voltage, the value of the resistor should be
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 appli-
cation note titled “Input System Instability”. The lockout circuitry
is a comparator with DC hysteresis. When the input voltage is ris-
ing, 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.
VDES
(kΩ)
R
=
- 1
trim
VNOM - VDES
where
VNOM = Nominal Voltage
VDES = Desired Voltage
Output Current Limit: The maximum current limit remains con-
stant 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.
(Vertical bars indicate
absolute value)
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.
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
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
0.90
0.94
0.98
1.02
1.06
1.1
Desired Output Voltage
Figure C: Trim Graph for 1.0Vout module
Note: the TRIM feature does not affect the voltage at which the
output over-voltage protection circuit is triggered. Trimming the
Product # PQ60010EGL20
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2EG601G Rev. A
12/14/04
Page 10
Input:
Output:
Current:
Package:
35-75 V
1.0 V
20 A
Eighth-brick
Technical Specification
value.
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 cor-
recting it.
Application Circuits: Figure D below provides a typical cir-
cuit diagram which details the input filtering and voltage trim-
ming.
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 elec-
trolytic input capacitor. The recommended external input capac-
itance is specified in the “Input Characterisitcs” section. More
detailed information is available in the application note titled
“EMI Characteristics” on the SynQor website.
Vout(+)
Vin(+)
Vsense(+)
Electrolytic
Capacitor
External
Input
R
trim-up
or
47µF
Vin
Trim
ON/OFF
Filter
C
R
load
trim-down
Iload
_
Vsense( )
_
_
Vin( )
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).
Product # PQ60010EGL20
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2EG601G Rev. A
12/14/04
Page 11
Input:
Output:
Current:
Package:
35-75 V
1.0 V
20 A
Eighth-brick
Technical Specification
Startup Inhibit Period: The Startup Inhibit Period ensures that
the converter will remain off for approximately 230ms 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
• Input Over-Voltage Shutdown (not present in Eighth-brick)
• Output Over-Voltage Protection
• Over Temperature Shutdown
• Current Limit
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.
• 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:
V
in
Under-Voltage
Lockout Turn-On
Threshold
ON/OFF
(pos logic)
ON
OFF
ON
OFF
ON
23ms (typical
turn on time)
V
out
200ms
(typical start-up
inhibit period)
200ms
200ms
t
t0
t1
t2
Figure F: Startup Inhibit Period (turn-on time not to scale)
Product # PQ60010EGL20
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2EG601G Rev. A
12/14/04
Page 12
Input:
Output:
Current:
Package:
35-75 V
1.0 V
20 A
Eighth-brick
Technical Specification
ORDERING INFORMATION
PART NUMBERING SYSTEM
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.
The part numbering system for SynQor’s PowerQor DC/DC
converters follows the format shown in the example below.
PQ 60 010 E G L 20 N N S
Options (see
Ordering Information)
Output Max Output
Model Number
Input Voltage
Output Current
Voltage
1.0 V
1.0 V
1.2 V
1.2 V
1.5 V
1.5 V
1.8 V
1.8 V
2.5 V
2.5 V
3.3 V
5.0 V
Current
20 A
25 A
20 A
25 A
20 A
25 A
20 A
25 A
20 A
25 A
20 A
15 A
PQ60010EGL20xyz
PQ60010EGL25xyz
PQ60012EGL20xyz
PQ60012EGL25xyz
PQ60015EGL20xyz
PQ60015EGL25xyz
PQ60018EGL25xyz
PQ60025EGL20xyz
PQ60025EGL25xyz
PQ60033EGL20xyz
PQ60050EGL15xyz
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
35 - 75 V
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.
Modules above can be ordered to have an increased bottom
side board clearance and a slightly larger total height (see
page 2 for dimensions). To order these parts, replace EGL in
part number with EGA. There are no other differences from
the EGL units.
The following option choices must be included in place of the
x y z spaces in the model numbers listed above.
Application Notes
Options Description: x y z
A variety of application notes and technical white papers
can be downloaded in pdf format at www.synqor.com.
Enable
Pin
Feature
K - 0.110"
P - Positive N - 0.145"
N - Negative R - 0.180"
Y - 0.250"
S - Standard
Contact SynQor for further information:
Warranty
SynQor offers a three (3) year limited warranty. Complete warranty
information is listed on our web site or is available upon request from
SynQor.
Phone:
Toll Free: 888-567-9596
Fax:
978-849-0600
978-849-0602
E-mail:
Web:
sales@synqor.com
www.synqor.com
Information furnished by SynQor is believed to be accurate and reliable.
However, no responsibility is assumed by SynQor for its use, nor for any
infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any
patent or patent rights of SynQor.
Address: 155 Swanson Road
Boxborough, MA 01719
Product # PQ60010EGL20
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2EG601G Rev. A
12/14/04
Page 13
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