PQ48033HTA50NNF [SYNQOR]
DC-DC Regulated Power Supply Module, 1 Output, Hybrid, HALF-BRICK PACKAGE-11;
| 型号： | PQ48033HTA50NNF |
| 厂家： | 
SYNQOR WORLDWIDE HEADQUARTERS |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, Hybrid, HALF-BRICK PACKAGE-11 |
| 文件： | 总14页 (文件大小：510K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Technical
Specification
PQ60525HTA04
48Vin 52.5Vout 200W 2250Vdc
Half-brick
DC/DC Converter
Input
Output
Power
Isolation
™
The PQ60525HTA04 PowerQor Tera converter is a next-
generation, board-mountable, isolated, fixed switching fre-
quency DC/DC converter that uses synchronous rectification
to achieve extremely high conversion efficiency. The module
is ideally suited to support the IEEE 802.3af standard for
Power Over LAN and VoIP applications. The Tera series
converters ooffer tthe mmaximum uuseable ooutput ccurrent ffor aany
standard “half-brick” module. The Tera units also feature
active current sharing for N+1 and parallel applications.
PQ60525HTA04 Module
Operational Features
• Ultra-high efficiency, 92% at full rated load current
Control Features
• Delivers up to 200 Watts of output power with mini-
mal derating - no heatsink required
• On/Off control referenced to input side (positive and
negative logic options are available)
• Wide input voltage range: 35V – 75V, with 100V
100ms input voltage transient capability
• Remote sense for the output voltage compensates for
output distribution drops
• Fixed frequency switching provides predictable EMI
performance
• Output voltage trim permits custom voltages and voltage
margining
Mechanical Features
Safety Features
• Industry standard half-brick pin-out configuration
• Industry standard size: 2.3” x 2.4” (58.4 x 61.0mm)
• 2250V, 30 MΩ input-to-output isolation
• UL/cUL 60950 recognized (US & Canada), basic insu-
• Total height only 0.43” (11.2mm), permits better air-
lation rating
• TUV certified to EN60950
• Meets 72/23/EEC and 93/68/EEC directives
• Meets UL94V-0 flammability requirements
flow and smaller card pitch
• Total weight: 2.6 oz. (75 grams)
Protection Features
Optional Features (full-feature)
• Input under-voltage lockout disables converter at low
input voltage conditions
• Output current limit and short circuit protection
• Active current share for N+1 and parallel applications
• External Clock Synchronization pin for better EMI char-
• Active back bias limit prevents damage to converter
acteristics
from external load induced pre-bias
• Startup Synchronization pin for more consistent start-up
sequence
• ORing FET drive supply for efficient ORing protection
• Output over-voltage protection
• Thermal shutdown
Product # PQ60525HTA04
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HT652F Rev. B
03/08/05
Page 1
Input:
Output:
Current:
Package:
35-75 V
52.5 V
3.8 A (200W)
Half-brick
Technical Specification
2.30
(58.4)
0.400
(10.16)
0.50
MECHANICAL
1.90
(12.7)
0.700
(48.3)
(17.78)
0.19
(4.8)
DIAGRAM
0.600
(15.24)
0.400
(10.16)
0.800
(20.32)
1.000
(25.40)
1.000
(25.40)
1.400
(35.56)
Top View
2.40
(61.0)
1.400
(35.56)
Side View
Bottom side
Clearance
See Note 10
0.43
0.037+/-0.029
(0.94+/-0.74)
Lowest
Component
(11.2)
0.145
(3.68)
Load Board
15 character “8” alternate bottom side clearance
option (See ordering options on Pge 14)
0.475(12.06) maximum height
See Note 4
15 character “8” alternate bottom side clear-
ance option (See ordering options on Pge 14)
0.060+/-0.030
(1.52+/-0.76)
NOTES
1) Pins 1-4, 6-8, A-C are 0.040” (1.02mm) diameter. with
0.080” (2.03mm) diameter standoff shoulders.
PIN DESIGNATIONS
2) Pins 5 and 9 are 0.080” (2.03 mm) diameter with 0.125”
(3.18mm) diameter standoff shoulders.
3) Pins 3, A, B & C only included in Full-Feature models.
Pin No. Name
Function
Positive input voltage
1
Vin(+)
2
ON/OFF
TTL input to turn converter
on and off, referenced to
Vin(-), with internal pull up.
Single wire parallel signal
Negative input voltage
Negative output voltage
Return remote sense
4) Other pin extension lengths available. Recommended pin
length is 0.03” (0.76mm) greater than the PCB thickness.
5) All Pins: Material - Copper Alloy
Finish - Tin/Lead over Nickel plate
6) Undimensioned components are shown for visual reference
only.
7) All dimensions in inches (mm)
Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
8) Weight: 2.6 oz. (75g) typical
3
4
5
6
7
8
9
A
B
I share
Vin(-)
Vout(-)
SENSE(-)
TRIM
SENSE(+)
Vout(+)
Clock Sync
Start Sync
Output voltage trim
Positive remote sense
Positive output voltage
Clock synchronization
Startup synchronization
9) Workmanship: Meets or exceeds IPC-A-610C Class II
10) 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.
11) The flanged pins are designed to permit surface mount
soldering (avoiding the wave soldering process) through
the use of the flanged pin-in-paste technique.
Pins in Italics Shaded text are optional
Product # PQ60525HTA04
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HT652F Rev. B
03/08/04
Page 2
Input:
Output:
Current:
Package:
35-75 V
52.5 V
3.8 A (200W)
Half-brick
Technical Specification
PQ60525HTA04 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
2250
100
125
18
V
100ms transient, square wave
Basic insulation level, 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
Voltage at Clock Sync 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
-15
18
V
applies to Full Feature option only
35
48
75
V
30.6
28.6
1.9
32.5
30.5
2.0
34.4
32.4
2.1
V
V
V
7.0
A
100% Load, 35 Vin, trim up 10%
No-Load Input Current
90
2
110
5
mA
mA
Disabled Input Current
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
500
3
mV
mA
mA
A
1000V/ms input trans; 330µF cap; Figure 17
RMS thru 10µH inductor; Figures 13 & 15
RMS; Figures 13 & 14
150
20
fast blow external fuse recommended
1\11
47
µH\µF internal values, see Figure E
µF
V
Typical ESR 0.1-0.2Ω, see Figure 13
52.00
51.5
52.50
53.00
+
+
0.05 \ 20 0.1 \ 50
%\mV
+
+
Over Load
0.1 \ 40 0.15 \ 75 %\mV
+
+
300
Over Temperature
150
mV
V
Total Output Voltage Range
53.5
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
100
20
150
50
mV
mV
A
RMS
Full Load, see Figures 13 & 16
Operating Output Current Range
Output DC Current-Limit Inception
Output DC Current-Limit Shutdown Voltage
Current Share Accuracy (2 units paralleled)
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
0.385
4.2
3.85
5.2
Subject to thermal derating; Figures 5-8
Output Voltage 10% Low; Figure 23
4.7
30
A
V
+
+
5
2
%
% of rated output current
1,500
µF
52.5Vout at 3.8A Resistive Load
60
dB
120 Hz; Figure 20
400
400
500
mV
mV
µs
50-75-50% Iout max; 330µF cap; Figure 11
50-75-50% Iout max; 330µF cap; Figure 12
to within 1% Vout nom
Turn-On Transient
Turn-On Time
25
200
0
40
ms
ms
%
Full load, Vout=90% nom.; Figures 9 & 10
-40°C to +125°C; Figure A
Start-Up Inhibit Time
180
240
Output Voltage Overshoot
EFFICIENCY
1,500 µF load capacitance, Iout = 0A
100% Load
92.3
91.7
%
%
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
2250
30
V
M
Ω
Isolation Capacitance2
3300
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 # PQ60525HTA04
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HT652F Rev. B
03/08/04
Page 3
Input:
Output:
Current:
Package:
35-75 V
52.5 V
3.8 A (200W)
Half-brick
Technical Specification
ELECTRICAL CHARACTERISTICS (Continued)
Parameter
P
Min.
Typ.
Max.
Units Notes & Conditions
FEATURE CHARACTERISTICS
Switching Frequency
275
300
325
kHz
Regulation and Isolation stages
ON/OFF Control (Option P)
Off-State Voltage
-2
0.8
18
V
V
On-State Voltage
2.7
ON/OFF Control (Option N)
Off-State Voltage
2.7
-2
18
V
V
On-State Voltage
0.8
ON/OFF Control (Either Option)
Pull-Up Voltage
Figures A, B
Vin/6
42
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
-20
+10
+10
%
Measured across Pins 9 & 5; Figure C
Measured across Pins 9 & 5
%
%
117
120
10
Over full temp range; % of nominal Vout
Average PCB Temperature
°C
°C
TBD
See App Note: Output Load Current Calc.
o
2.2
1.3
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 Logic Sense, Pin Length and SynQor is protected under various patents, including but not lim-
Feature Set for this family of DC/DC converters. Please consult the ited to U.S. Patent #s 5,999,417; 6,222,742 B1; 6,594,159
last page of this specification sheet for information on available B2; 6,545,890 B2.
options.
Product # PQ60525HTA04
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HT652F Rev. B
03/08/04
Page 4
Input:
Output:
Current:
Package:
35-75 V
52.5 V
3.8 A (200W)
Half-brick
Technical Specification
100
95
90
85
80
75
70
65
94
93
92
91
90
89
88
87
86
35 Vin
48 Vin
75 Vin
25 C
40 C
55 C
0
100
200
300
400
500
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Air Flow (LFM)
Load Current (A)
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
20
18
16
14
12
10
8
12.0
11.0
10.0
9.0
8.0
7.0
6
6.0
35 Vin
48 Vin
75 Vin
25 C
40 C
55 C
4
5.0
2
4.0
0
0
100
200
300
400
500
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Air Flow (LFM)
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.
°
°
°
4.0
3.5
3.0
2.5
2.0
fcmpature
1.5
400 LFM (2.0 m/s)
Cofsur
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
°
1.0
0.5
0.0
100 LFM (0.5 m/s)
50 LFM (0.25 m/s)
Sdjcionmpature
swthin1
0
25
40
55
70
85
Ambient Air T emperature (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
from input to output (nominal input voltage).
Figure 6: Thermal plot of converter at 3.4 amp load current (179W)
with 55 C air flowing at the rate of 200 LFM. Air is flowing across the
converter from input to output (nominal input voltage).
°
Product # PQ60525HTA04
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HT652F Rev. B
03/08/04
Page 5
Input:
Output:
Current:
Package:
35-75 V
52.5 V
3.8 A (200W)
Half-brick
Technical Specification
4.0
3.5
3.0
2.5
2.0
fcmpature
1.5
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
Cofsur
1.0
°
0.5
0.0
100 LFM (0.5 m/s)
50 LFM (0.25 m/s)
Sdjcionmpature
swthin1
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 output to input (nominal input voltage).
Figure 8: Thermal plot of converter at 3.2 amp load current (168W)
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 (20V/div). Bottom Trace:
ON/OFF input (5V/div)
Figure 10: Turn-on transient at zero load (10 ms/div). Top Trace: Vout
(20V/div). Bottom Trace: 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: 330
µ
F, electrolytic output
75%-50% of Iout(max): dI/dt = 5A/µs). Load cap: 330µF, electrolytic output
capacitance. Top trace: Vout (200mV/div), Bottom trace: Iout (1A/div).
capacitance. Top trace: Vout (200mV/div), Bottom trace: Iout (1A/div).
Product # PQ60525HTA04 Phone 1-888-567-9596 www.synqor.com
Doc.# 005-2HT652F Rev. B 03/08/04
Page 6
Input:
Output:
Current:
Package:
35-75 V
52.5 V
3.8 A (200W)
Half-brick
Technical Specification
See Fig. 15
10 µH
See Fig. 14
source
impedance
See Fig. 16
iS
iC
DC/DC
Converter
VOUT
VSOURCE
15
µ
Ω
F,
ESR
1 µF
47 µF,
ceramic
450m
<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
µ
H source impedance and 47
µ
F
electrolytic capacitor (500 mA/div). (See Figure 13)
Figure 15: Input reflected ripple current, i , through a 10
µ
H source
Figure 16: Output voltage ripple at nominal input voltage and rated
load current (20 mV/div). Load capacitance: 1 F ceramic capacitor
and 15 F tantalum capacitor. Bandwidth: 20 MHz. (See Figure 13)
s
inductor at nominal input voltage and rated load current (10 mA/div).
(See Figure 13)
µ
µ
Figure 17: Output voltage response to step-change in input voltage
Figure 18: Load current (2A/div) as a function of time when the con-
verter attempts to turn on into a 10 m short circuit. Top trace
(2ms/div) is an expansion of the on-time portion of the bottom trace.
(1000V/ms). Load cap: 330
µ
F, electrolytic output capacitance. Ch 1: Vin
Ω
(20V/div), Ch 2: Vout (500mV/div).
Product # PQ60525HTA04
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HT652F Rev. B
03/08/04
Page 7
Input:
Output:
Current:
Package:
35-75 V
52.5 V
3.8 A (200W)
Half-brick
Technical Specification
10
0
-10
-20
-30
-40
-50
-60
-70
-80
1
35 Vin
48 Vin
75 Vin
35 Vin
48 Vin
75 Vin
0.1
0.01
0.001
10
100
1,000
Hz
10,000
100,000
10
100
1,000
Hz
10,000
100,000
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.
30
20
10
0
100
10
1
35 Vin
48 Vin
75 Vin
35 Vin
48 Vin
75 Vin
-10
-20
-30
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.
60
50
40
30
20
10
0
35 V
48 V
75 V
0.0
1.0
2.0
3.0
4.0
5.0
6.0
Load Current (A)
Figure 23: Output voltage vs. load current showing typical current limit
curves and converter shutdown points.
Product # PQ60525HTA04
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HT652F Rev. B
03/08/04
Page 8
Input:
Output:
Current:
Package:
35-75 V
52.5 V
3.8 A (200W)
Half-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 8 and 6): 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 8 should be connected to Vout(+) and Pin 6 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 half-brick, quarter-brick and eighth-brick
converters uses the industry standard footprint and pin-out con-
figuration.
Pins 8 and 6 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 # PQ60525HTA04
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Doc.# 005-2HT652F Rev. B
03/08/04
Page 9
Input:
Output:
Current:
Package:
35-75 V
52.5 V
3.8 A (200W)
Half-brick
Technical Specification
across the output (pins 9 and 5) to determine when it should trig-
ger, 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.
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.
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 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
PROTECTION FEATURES
100%
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.
R
=
- 2 (k )
Ω
trim-down
( )
∆
where
Vnominal – Vdesired
Vnominal
=
x 100%
∆%
To increase the output voltage, the user should connect a resistor
between Pin 7 and Pin 8 (SENSE(+) input). For a desired increase
of the nominal output voltage, the value of the resistor should be
Vnominal
– 2
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 compara-
tor with DC hysteresis. When the input voltage exceeds the typi-
cal Input Over-Voltage Shutdown value, the converter will turn off.
Once the converter is off, it will turn back on when the input volt-
age falls below the minimum Input Over-Voltage Shutdown value.
x VDES + VNOM
(
)
1.225
R
=
(k )
Ω
trim-up
VDES - VNOM
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.
100,000
10,000
1,000
100
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.
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.
10
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
1
0
2
4
6
8
10
12
14
16
18
20
% Increase in Vout
% Decrease in Vout
Figure C: Trim Graph for 52.5Vout module
Note: the TRIM feature does not affect the voltage at which the
output over-voltage protection circuit is triggered. Trimming the
Product # PQ60525HTA04
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Doc.# 005-2HT652F Rev. B
03/08/04
Page 10
Input:
Output:
Current:
Package:
35-75 V
52.5 V
3.8 A (200W)
Half-brick
Technical Specification
200 ms the converter will automatically restart.
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 input
electrolytic capacitor. The recommended external input capaci-
tance is specified in the “Input Characteristics” section. More
detailed information is available in the application note titled
“EMI Characteristics” on the SynQor website.
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.
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
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 # PQ60525HTA04
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Doc.# 005-2HT652F Rev. B
03/08/04
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Input:
Output:
Current:
Package:
35-75 V
52.5 V
3.8 A (200W)
Half-brick
Technical Specification
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:
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.
FULL FEATURE APPLICATION NOTES
This section provides some basic application information for the
full-feature version of the PowerQor series converter. The pin-out
configuration for these optional feature pins is shown on page 2,
and the part numbering format is shown on the last page of this
specification sheet.
• Input Under-Voltage Lockout
• Input Over-Voltage Shutdown (not present in Quarter-brick)
• Output Over-Voltage Protection
• Over Temperature Shutdown
• Current Limit
All units in this product family include back-drive protection to
simplify the use of multiple converters in a parallel or sequencing
application. However, any voltage applied to the output of the
converter should be kept below 120% of the rated output voltage
of the converter.
• 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:
In addition to back-drive protection, these units include the fol-
lowing features (pins):
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.
Current Share (pin 3): The active current share feature allows
for N+1 and parallel applications. To achieve load sharing,
directly connect the I share pins of multiple units. The load current
will share equally among the multiple units ( 5% at full rated cur-
rent). It is important that the Vin(-) pins of the sharing units be
directly connected and NOT placed outside of an EMI filter or
other impedance path. The voltage at the I Share pin will range
from 0 to 5 volts (at full rated current), referenced to the primary-
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.
V
in
Under-Voltage
Lockout Turn-On
Threshold
ON/OFF
(pos logic)
ON
OFF
ON
OFF
ON
25ms (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 # PQ60525HTA04
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Doc.# 005-2HT652F Rev. B
03/08/04
Page 12
Input:
Output:
Current:
Package:
35-75 V
52.5 V
3.8 A (200W)
Half-brick
Technical Specification
side ground, Vin(-).
Start Sync (pin B): The Start Synchronization pin will allow a
more consistent start-up sequence. To operate this feature, con-
nect together the Start-Sync pins of multiple current-sharing units.
This will permit immediate start-up with loads greater than the cur-
rent limit of a single unit. Without this connection, any set of con-
verters attempting to asynchronously start (or re-start) with a load
greater than the current limit of a single unit will "hiccup". This
“hiccup” mode will continue until one converter attempts a start
at the same time as the minimum number of additional units nec-
essary to sustain the load condition. For example, three 50 amp
units starting into a 90 amp load would require two units to simul-
taneously attempt a start. The Start Sync connection synchro-
nizes these starting attempts and provides a more consistent and
reliable start-up sequence. For details about the "hiccup mode"
or repeated startup attempts, please see the "Startup Inhibit
Period" note in this Technical Specification.
Clock Sync (pin A): The External Clock Synchronization pin
provides the ability for the user to control the EMI signature and
synchronize sensitive circuitry to quiet periods in the converter
operation. With this option, the converter can be synchronized to
an external clock signal whose frequency is greater than that of
the free-running internal clock. However, substantially raising the
converter’s frequency will reduce its efficiency. Therefore, the rec-
ommended frequency range for the external clock synchroniza-
tion signal applied to this pin would be the lowest value possible
without dropping below the maximum switching frequency value
listed on the Electrical Specifications page.
The following requirements should also be met:
• The external clock signal should be referenced to the
negative input voltage, Vin(-).
• The high level of the signal should be between 3.5V and
5.0V.
• The low level should be between -0.5V and +1.2V.
• Do not apply a clock signal lower than the specified fre-
quency.
Product # PQ60525HTA04
Phone 1-888-567-9596
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Doc.# 005-2HT652F Rev. B
03/08/04
Page 13
Input:
Output:
Current:
Package:
35-75 V
52.5 V
3.8 A (200W)
Half-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.
PQ60 versions of the modules below indicate a unit with
100V for 100ms input voltage transient withstand (Telcordia
GR-513).
The part numbering system for SynQor’s PowerQor DC/DC
converters follows the format shown in the example below.
PQ 60 525 H T A 04 N K S
Options (see
Ordering Information)
Output Current
Thermal Design
Performance Level
Package Size
Output Max Output
Model Number
Input Voltage
Voltage
1.2 V
1.5 V
1.8 V
2.0 V
2.5 V
3.3 V
5.0 V
12 V
Current
60 A
PQ60012HTA60xyz 35 - 75 V
PQ48015HTA60xyz 35 - 75 V
PQ48018HTA60xyz 35 - 75 V
PQ48020HTA60xyz 35 - 75 V
PQ48025HTA60xyz 35 - 75 V
PQ48033HTA50xyz 35 - 75 V
PQ48050HTA33xyz 35 - 75 V
PQ48120HTA14xyz 35 - 75 V
PQ48150HTA11xyz 35 - 75 V
PQ60180HTA09xyS 35 - 75 V
PQ60260HTB10xyz 35 - 75 V
PQ60525HTA04xyz 35 - 75 V
Output Voltage
60 A
Input Voltage
60 A
60 A
Product Family
60 A
50 A
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.
33 A
13.75 A
11 A
15 V
18 V
26 V
9.2 A
9.6 A
3.8 A
52.5 V
The following option choices must be included in place of the
x y z spaces in the model numbers listed
Options Description: x y z
Application Notes
Enable
Logic
Pin
Feature
Set
Length
A variety of application notes and technical white papers can
be downloaded in pdf format at www.synqor.com.
S - Standard
8 - Standard
with Alternate
Bottom Side
Clearance (see
Note 3 below)
F - Full Feature
K - 0.110"
P - Positive N - 0.145"
N - Negative R - 0.180"
Y - 0.250"
Note 3: The 15th character “8”designates an alternate min-
imum bottom side clearance option available on the
PQ60525HTA04xxS model. Please see the mechanical draw-
ing on Page 2 for bottom side clearance and maximum hieght
for the “8” option.
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 # PQ60525HTA04
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2HT652F Rev. B
03/08/04
Page 14
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