30A/99W

Technical
S pecification
PQ60033ETL30
48V in
3.3Vout
30Amp
2250Vdc
Eighth-brick
Input
Output
Current
Isolation
DC/DC Conver ter
Th e PQ 6003 3ETL3 0 Po we r Qor ® Te r a e i g ht h-b ri ck con ve rt e r
is a next-generation, board-mountable, isolated, fixed
s witch ing freq u enc y DC/DC c on ver ter tha t u ses s y nch r o n ou s r ectification to ach ieve extr emel y h igh con vers io n e ffi c ienc y. Th e p owe r d is sip a ted by th e co nver ter is s o lo w tha t
a he at s ink is no t r eq ui red , wh ich sa v es c os t, we ight , h eigh t ,
a n d a p pl ica tion effor t. Al l of th e p ower an d con tro l co m p on en ts a r e mo un ted to th e mu l ti-l ay er P CB s ub s tra te with
h igh -y iel d su r fac e mo un t tec hn ol ogy . Si nce the P ower Q or
c on ve rt er h a s no exp l icit th er ma l int er fa ces , it is ex tr emel y
reliable. RoHS Compliant (see page 12 ).
Operational Features
PQ60033ETL30 Module
• High efficiency, 90% at full load
• Delivers up to 30 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
• No minimum load requirement means no preload
resistors required
Mechanical Features
• Industry standard eighth-brick pin-out configuration
• Industry standard size: 0.90” x 2.3” (22.9x58.4mm)
• Total height only 0.320” (8.13mm), permits better airflow and smaller card pitch
• Total weight: 0.85 oz. (24 grams)
• Flanged pins designed to permit surface mount soldering (avoid wave solder) using FPiP technique
Contr ol 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 # PQ60033ETL30
Phone 1-888-567-9596
www.synqor.com
Pr otection Features
• 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 consequent hazardous conditions
• Active back bias limit prevents damage to converter
from external load induced pre-bias
• Output over-voltage protection protects load from damaging voltages
• Thermal shutdown protects converter from abnormal
environmental conditions
Safety Features
• 2250V, 30 MΩ input-to-output isolation provides
input/output ground separation
• UL 60950-1 recognized (US & Canada), basic insulation rating
• TUV certified to EN60950-1
• Meets 72/23/EEC and 93/68/EEC directives which
facilitates CE Marking in user’s end product
• Board and plastic components meet UL94V-0 flammability requirements
Doc.# 005-2ET633F Rev. A
06/01/06
Page 1
Input:
Output:
Current:
Package:
Technical Specification
MECHANICAL
DIAGRAM
35-75 V
3.3 V
30 A
Eighth-brick
2.30
0.450
(58.4)
(11.43)
2.00
(50.8)
0.300
0.14
(7.62)
(3.6)
0.15
0.150
Top View
(3.8)
(3.81)
1
8
2
7
6
3
5
4
0.600
(15.24)
0.900 +0.022
0.300
(22.86 +0.55)
(7.62)
0.600
0.320 +0.015
(15.24)
(8.13 +0.38)
Overall Height
0.145
(3.68)
See Note 3
Side View
0.016 +0.015
(0.41 +0.38)
Bottom Side Clearance
Lowest
Component
Load Board
PIN DESIGNATIONS
NOTES
1) Pins 1-3, 5-7 are 0.040” (1.02mm) diameter. with 0.080”
(2.03mm) diameter standoff shoulders.
2) Pins 4 and 8 are 0.062” (1.57 mm) diameter with 0.100”
(2.54 mm) diameter standoff shoulders.
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 - Matte Tin over Nickel plate
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: 0.85 oz (24 g) typical
8) Workmanship: Meets or exceeds IPC-A-610C Class II
9) 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 core
shown at left above is considered part of the input/primary
circuit and that the two ferrite cores shown at the right
above are considered part of the output/secondary circuit.
10) 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 # PQ60033ETL30
Flanged Pin
See Note 10
Phone 1-888-567-9596
Pin No.
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.
3
Vin(–)
Negative input voltage
4
Vout(–)
Negative output voltage
5
SENSE(–)
Negative remote sense1
6
TRIM
Output voltage trim2
7
SENSE(+)
Positive remote sense3
8
Vout(+)
Positive 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. SENSE(+) should be connected to Vout(+) either remotely or at the converter.
www.synqor.com
Doc.# 005-2ET633F Rev. A
06/01/06
Page 2
Input:
Output:
Current:
Package:
Technical Specification
35-75 V
3.3 V
30 A
Eighth-brick
PQ60033ETL30 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
Min.
Typ.
Max.
Units
100
75
100
2250
100
125
18
V
V
V
V
°C
°C
V
Notes & Conditions
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
Operating
Operating Transient Protection
Isolation Voltage (input to output)
Operating Temperature
Storage Temperature
Voltage at ON/OFF input pin
INPUT CHARACTERISTICS
Operating Input Voltage Range
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Voltage Hysteresis
Maximum Input Current
No-Load Input Current
Disabled Input Current
Inrush Current Transient Rating
Response to Input Transient
Input Reflected Ripple Current
Input Terminal Ripple Current
Recommended Input Fuse
Input Filter Component Values (L\C)
Recommended External Input Capacitance
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Output Voltage Regulation
Over Line
Over Load
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and 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 Electrolytic
Maximum Output Capacitance Ceramic
-40
-55
-2
35
48
75
V
31.5
29.6
1.9
32.6
30.6
2.0
33.7
31.6
2.1
3.2
75
10
0.01
V
V
V
A
mA
mA
A 2s
mV
mA
mA
A
µH\µF
µF
0
150
1.5
50
47
3.276
3.300
3.261
+0.1 \ 3.3
+0.2 \ 7.0
+5
3.300
0
30.5
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 (1A/µs)
Settling Time
Turn-On Transient
Turn-On Time
Start-Up Inhibit Time
Restart Inhibit Time
Output Voltage Overshoot
EFFICIENCY
100% Load
50% Load
6
12
9
190
6
6
20
1.0 \ 3.3
3.332
V
3.349
%\mV
%\mV
mV
V
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
75
dB
120 Hz; Figure 20
120
180
80
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
ms
ms
ms
%
Full load, Vout=90% nom.; Figures 9 & 10
-40°C to +125°C; Figure F
-40°C to +125°C; Figure F
No load capacitance, Iout = 0A
%
%
Figures 1 - 4
Figures 1 - 4
°C
°C
°C
Package rated to 150°C
UL rated max operating temp 130°C
See Figures 5 - 8 for derating curves
15
10
200
0
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Semiconductor Junction Temperature
Board Temperature
Transformer Temperature
Isolation Voltage (dielectric strength)
Isolation Resistance
Isolation Capacitance2
1000V/ms input transient
RMS thru 10µH inductor; Figures 13 & 15
RMS; Figures 13 & 14
Fast blow external fuse recommended
Internal values, see Figure E
Typical ESR 0.1-0.2Ω, see Figure 13
Negative current drawn from output
Negative current drawn from output
3.3Vout at 30A Resistive Load
3.3Vout at 30A Resistive Load
50
10
5
18
11
210
90
92
ISOLATION CHARACTERISTICS
100% Load, 35 Vin, nominal Vout
mV
mV
A
A
V
A
mA
mF
mF
36
1.5
8
10
50
20
30
40
Continuous
Continuous
100ms transient, square wave
Basic insulation, Pollution Degree 2
125
125
125
2250
30
3300
V
MΩ
pF
Note 1: Output voltage ripple can exceed maximum specification during startup when output voltage is less than 1.4V. Additional output capacitance will mitigate this startup ripple behavior. 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 # PQ60033ETL30
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2ET633F Rev. A
06/01/06
Page 3
Input:
Output:
Current:
Package:
Technical Specification
35-75 V
3.3 V
30 A
Eighth-brick
PQ60033ETL30 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
Min.
Typ.
Max.
Units
317
333
350
kHz
-2
2.4
0.8
18
V
V
2.4
-2
18
0.8
V
V
5
V
kΩ
%
%
%
°C
°C
-20
117
RELIABILITY CHARACTERISTICS
Calculated MTBF (Telcordia)
Calculated MTBF (MIL-217)
Field Demonstrated MTBF
10
120
120
10
+10
+10
129
Notes & Conditions
Figures A & B
Measured across Pins 8 & 4; Figure C
Measured across Pins 8 & 4
Over full temp range; % of nominal Vout
Average PCB Temperature
106 Hrs. TR-NWT-000332; 80% load,300LFM, 40oC Ta
106 Hrs. MIL-HDBK-217F; 80% load, 300LFM, 40oC Ta
106 Hrs. See our website for latest values
3.0
2.6
STANDARDS COMPLIANCE
Parameter P
Notes
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
File # E194341, Basic insulation & pollution degree 2
Certified by TUV
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
PATENTS
SynQor provides various options for Enable Logic and Pin Length
for this family of DC/DC converters. Please consult the last page
for information on available options.
SynQor is protected under various patents, including but not limited to U.S. Patent numbers 5,999,417; 6,222,742 B1;
6,594,159 B2; 6,545,890 B2.
Product # PQ60033ETL30
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2ET633F Rev. A
06/01/06
Page 4
Input:
Output:
Current:
Package:
95
93
90
92
85
91
Efficiency (%)
Efficiency (%)
Technical Specification
80
75
35 Vin
48 Vin
75 Vin
70
35-75 V
3.3 V
30 A
Eighth-brick
90
89
25 C
40 C
55 C
88
87
65
0
5
10
15
20
25
100
30
200
300
400
Airflow (LFM)
Load Current (A)
Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C.
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).
12
7
Power Dissipation (W)
Power Dissipation (W)
10
8
6
4
35 Vin
48 Vin
75 Vin
2
0
6
5
4
25 C
40 C
55 C
3
0
3
6
9
12
15
18
21
24
27
30
100
Load Current (A)
200
300
400
Airflow (LFM)
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).
30
25
Iout (A)
20
15
10
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
5
100 LFM (0.5 m/s)
0
25
40
55
70
85
Ambient Air Temperature (ºC)
Figure 5: Maximum output power-derating curves vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM with air flowing from pin 3 to pin 1(nominal input voltage).
Product # PQ60033ETL30
Phone 1-888-567-9596
Figure 6: Thermal plot of converter at 28.5 amp load current (94.05W)
with 70°C air flowing at the rate of 200 LFM. Air is flowing across the
converter from 3 to pin 1 (nominal input voltage).
www.synqor.com
Doc.# 005-2ET633F Rev. A
06/01/06
Page 5
Input:
Output:
Current:
Package:
Technical Specification
35-75 V
3.3 V
30 A
Eighth-brick
30
25
Iout (A)
20
15
10
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
5
100 LFM (0.5 m/s)
0
25
40
55
70
85
Ambient Air Temperature (ºC)
Figure 7: Maximum output power derating curves vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM with air flowing
across the converter from pin input to output (nominal input voltage).
Figure 8: Thermal plot of converter at 27.4 amp load current (90.42W)
with 70°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) (5 ms/div). Load cap:
10uF, 100 mΩ ESR tantalum capacitor and 1uF ceramic capacitor. Input
voltage pre-applied. Ch 1: Vout (1V/div), Ch 2: ON/OFF input (5V/div).
Figure 10: Turn-on transient at zero load (10 ms/div). Load cap: 10uF,
100 mΩ ESR tantalum capacitor and 1uF ceramic capacitor. Ch 1: Vout
(1V/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/µs). Load cap: 10µF, 100 mΩ ESR tantalum cap and 1µF ceramic cap. Ch 1: Vout (50mV/div), Ch 2: Iout (10A/div).
75%-50% of Iout(max): dI/dt = 1A/µs). Load cap: 470µF, 30 mΩ ESR tantalum cap and 1µF ceramic cap. Ch 1: Vout (50mV/div), Ch 2: Iout (10A/div).
Product # PQ60033ETL30
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2ET633F Rev. A
06/01/06
Page 6
Input:
Output:
Current:
Package:
Technical Specification
35-75 V
3.3 V
30 A
Eighth-brick
See Fig. 15
10 µH
See Fig. 14
source
impedance
See Fig. 16
iS
VSOURCE
iC
47 µF,
<1Ω ESR
electrolytic
capacitor
DC/DC
Converter
VOUT
1 µF
15 µF,
ceramic 100mΩ ESR
capacitor
tantalum
capacitor
Figure 13: Test set-up diagram showing measurement points for Input
Terminal Ripple Current (Figure 14), Input Reflected Ripple Current
(Figure 15) and Output Voltage Ripple (Figure 16).
Figure 14: Input Terminal Ripple Current, ic, at full rated output current and nominal input voltage with 10µ H source impedance and 47µ F
electrolytic capacitor (50 mA/div). Bandwidth: 250MHz. See Figure 13.
Figure 15: Input reflected ripple current, is, through a 10 µ H source
inductor, using a 47µ F electrolytic input capacitor (2mA/div).
Bandwidth: 250MHz. See Figure 13.
Figure 16: Output voltage ripple at nominal input voltage and rated
load current (10 mV/div). Load capacitance: 1µ F ceramic capacitor
and 15µ F tantalum capacitor. Bandwidth: 20 MHz. See Figure 13.
Figure 17: Output voltage response to step-change in input voltage (50V to
100V in 100µ S), at 15A load current. Load cap: 15µ F 100mΩ ESR tantalum
capacitor and 1uF ceramic cap. Ch 1: Vout (50mV/div), Ch 2: Vin (20V/div).
Figure 18: Load current (20A/div) as a function of time when the converter attempts to turn on into a 15mΩ short circuit. Top trace (1ms/div)
is an expansion of the on-time portion of the bottom trace (40ms/div).
Product # PQ60033ETL30
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-2ET633F Rev. A
06/01/06
Page 7
Input:
Output:
Current:
Package:
Technical Specification
35-75 V
3.3 V
30 A
Eighth-brick
0
1
Forward Transmission (dB)
Output Impedance ( )
-10
0.1
0.01
0.001
35 Vin
48 Vin
-20
-30
-40
-50
-60
-70
35 Vin
-80
48 Vin
75 Vin
-90
75 Vin
0.0001
10
100
1,000
10,000
-100
100,000
10
Hz
100
1,000
10,000
100,000
Hz
Figure 19: Magnitude of incremental output impedance (Zout =
vout/iout) for minimum, nominal, and maximum input voltage at full
rated power.
Figure 20: Magnitude of incremental forward transmission (FT =
vout/vin) for minimum, nominal, and maximum input voltage at full
rated power.
5
100
Input Impedance ( )
Reverse Transmission (dB)
-5
-15
-25
-35
10
1
35 Vin
35 Vin
-45
48 Vin
48 Vin
75 Vin
75 Vin
0.1
-55
10
100
1,000
10,000
10
100,000
Figure 21: Magnitude of incremental reverse transmission (RT =
iin/iout) for minimum, nominal, and maximum input voltage at full rated
power.
100
1,000
10,000
100,000
Hz
Hz
Figure 22: Magnitude of incremental input impedance (Zin = vin/iin)
for minimum, nominal, and maximum input voltage at full rated power.
4.0
3.5
Output Voltage (V)
3.0
2.5
2.0
1.5
1.0
35 V
48 V
75 V
0.5
0.0
0
5
10
15
20
25
30
35
40
45
Load Current (A)
Figure 23: Output voltage vs. load current showing typical current limit
curves and converter shutdown points.
Product # PQ60033ETL30
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Doc.# 005-2ET633F Rev. A
06/01/06
Page 8
Input:
Output:
Current:
Package:
Technical Specification
BASIC OPERATION AND FEATURES
The single stage power converter switches 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 eighth-brick, quarter-brick and half-brick
converters uses the industry standard footprint and pin-out configuration.
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,
Vin(-). There
are two versions of the converter that differ by the sense of the
logic used for the ON/OFF input.
ON/OFF
ON/OFF
ON/OFF
Vin(_)
Vin(_)
Vin(_)
Remote Enable Circuit
Negative Logic
(Permanently Enabled)
ON/OFF
35-75 V
3.3 V
30 A
Eighth-brick
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 7 and 5): The SENSE(+) inputs correct for voltage drops along the conductors that connect the converter’s output pins to the load.
Pin 7 should be connected to Vout(+) and Pin 5 should be connected to Vout(-) at the point on the board where regulation is
desired. A remote connection at the load can adjust for a voltage
drop only as large as that specified in this datasheet, that is
[Vout(+) - Vout(-)] – [Vsense(+) - Vsense(-)] <
Sense Range % x Vout
Pins 7 and 5 must be connected for proper regulation of the output voltage. If these connections are not made, the converter will
deliver an output voltage that is slightly higher than its specified
value.
Note: the output over-voltage protection circuit senses the voltage
across the output (pins 8 and 4) to determine when it should trigger, not the voltage across the converter’s sense leads (pins 7
and 5). Therefore, the resistive drop on the board should be
small enough so that output OVP does not trigger, even during
load transients.
5V
Positive Logic
(Permanently Enabled)
5V
10k
ON/OFF
50k
TTL
TTL/
CMOS
ON/OFF
Vin(_)
Vin(_)
Open Collector Enable Circuit
Vin(_)
Direct Logic Drive
Figure A: Various circuits for driving the ON/OFF pin.
Product # PQ60033ETL30
100pF
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Figure B: Internal ON/OFF pin circuitry
Doc.# 005-2ET633F Rev. A
06/01/06
Page 9
Input:
Output:
Current:
Package:
Technical Specification
OUTPUT VOLTAGE TRIM (Pin 6): The TRIM input permits the
user to adjust the output voltage across the sense leads up or
down according to the trim range specifications.
To decrease the output voltage, the user should connect a resistor
between Pin 6 and Pin 5 (SENSE(-) input). For a desired decrease
of the nominal output voltage, the value of the resistor should be
Rtrim-down =
- 10.22
(511
∆%)
(kΩ)
where
∆% =
Vnominal – Vdesired
Vnominal
x 100%
To increase the output voltage, the user should connect a resistor
between Pin 6 and Pin 7 (SENSE(+) input). For a desired increase
of the nominal output voltage, the value of the resistor should be
Rtrim-up =
(
5.11VOUT(100+∆%) _ 511 _
1.225∆%
∆%
10.22
)
(kΩ)
where
VOUT = Nominal Output Voltage
Figure C graphs the relationship between the trim resistor value
and Rtrim-up and Rtrim-down, showing the total range the output
voltage can be trimmed up or down.
Trim Resistance (kOhms)
10,000
35-75 V
3.3 V
30 A
Eighth-brick
Total DC Variation of Vout: For the converter to meet its full
specifications, the maximum variation of the DC value of Vout,
due to both trimming and remote load voltage drops, should not
be greater than that specified for the output voltage trim range.
PROTECTION FEATURES
Input Under-Voltage Lockout: The converter is designed to
turn off when the input voltage is too low, helping avoid an input
system instability problem, described in more detail in the application note titled “Input System Instability”. The lockout circuitry
is a comparator with DC hysteresis. When the input voltage is rising, it must exceed the typical Turn-On Voltage Threshold value
(listed on the specification page) before the converter will turn
on. Once the converter is on, the input voltage must fall below
the typical Turn-Off Voltage Threshold value before the converter
will turn off.
Output Current Limit: Once the output current reaches the
current-limit inception point, the converter will decrease the output voltage as the output current increases. However, once the
impedance of the short across the output is small enough to make
the output voltage drop below the specified Output DC CurrentLimit Shutdown Voltage, the converter turns off (see Figure 23).
The converter then enters a “hiccup mode” where it repeatedly
turns on and off at a 5 Hz (nominal) frequency with a 5% duty
cycle until the short circuit condition is removed. This prevents
excessive heating of the converter or the load board.
Output Over-Voltage Limit: If the voltage across the output
pins exceeds the Output Over-Voltage Protection threshold, the
converter will immediately stop switching. This prevents damage
to the load circuit due to 1) excessive series resistance in output
current path from converter output pins to sense point, 2) a
release of a short-circuit condition, or 3) a release of a current
limit condition. Load capacitance determines exactly how high
the output voltage will rise in response to these conditions. After
200 ms the converter will automatically restart.
1,000
100
10
1
0
2
4
6
8
10
% increase Vout
12
14
16
18
20
% decrease Vout
Figure C: Trim Graph for 3.3Vout 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.
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 OverTemperature Shutdown value. It will allow the converter to turn on
again when the temperature of the sensed location falls by the
amount of the Over-Temperature Shutdown Restart Hysteresis
value.
It is not necessary for the user to add capacitance at the Trim pin.
The node is internally bypassed to eliminate noise.
Product # PQ60033ETL30
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Doc.# 005-2ET633F Rev. A
06/01/06
Page 10
Input:
Output:
Current:
Package:
Technical Specification
APPLICATION CONSIDERATIONS
Input System Instability: This condition can occur because
any DC/DC converter appears incrementally as a negative
resistance load. A detailed application note titled “Input
System Instability” is available on the SynQor website which
provides an understanding of why this instability arises, and
shows the preferred solution for correcting it.
Application Circuits: Figure D below provides a typical circuit diagram which details the input filtering and voltage trimming.
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 input
electrolytic capacitor. The recommended external input capacitance is specified in the “Input Characteristics” section. More
detailed information is available in the application note titled
“EMI Characteristics” on the SynQor website.
Startup/Restart Inhibit Period: The Restart Inhibit Period
ensures that the converter will remain off for approximately
200ms once it is shut down. When an output short is present, this
generates a 5Hz "hiccup mode," which prevents the converter
from overheating. In all, there are five ways that the converter
can be shut down that initiate a Restart Inhibit Period:
• Input Under-Voltage Lockout
• Output Over-Voltage Protection
• Over Temperature Shutdown
• Current Limit
• Turned off by the ON/OFF input
Figure F shows four turn-on scenarios, where a Restart Inhibit
Period is initiated at t1, t2, and t3:
A Startup Inhibit Period is initiated when the input voltage is
brought up from zero voltage during initial startup, beginning as
the input voltage reaches approximately 10V. At the end of the
Startup Inhibit Period (typically 10mS), if the ON/OFF pin has
been active for at least 1ms, and the input voltage is above the
Under-Voltage Lockout threshold, the output turns on with the
Typical Turn-On Time. This is shown at time t0.
Vin(+)
Vin
External
Input
Filter
Vout(+)
Vsense(+)
Electrolytic
Capacitor
47µF
35-75 V
3.3 V
30 A
Eighth-brick
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(+)
C
Vin(_)
Figure E: Internal Input Filter Diagram (component values listed on the specifications page).
Product # PQ60033ETL30
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Doc.# 005-2ET633F Rev. A
06/01/06
Page 11
Input:
Output:
Current:
Package:
Technical Specification
At time t1, the input voltage falls below the Input Under-Voltage
Lockout threshold. This disables the unit and initiates a Restart
Inhibit Period. During the Restart Inhibit Period, if the input voltage again exceeds the UVLO threshold, the unit cannot be
enabled again until the Restart Inhibit Period has elapsed. Once
this occurs, the output turns on with the Typical Turn-On Time.
At time t2, the ON/OFF pin disables the unit and initiates a
Restart Inhibit Period. During the Restart Inhibit Period, if the
ON/OFF pin is again activated, the unit cannot be enabled
again until the Restart Inhibit Period has elapsed. Once this
occurs, the output turns on with the Typical Turn-On Time.
35-75 V
3.3 V
30 A
Eighth-brick
RoHS Compliance: The EU led RoHS (Restriction of Hazardous
Substances) Directive bans the use of Lead, Cadmium,
Hexavalent Chromium, Mercury, Polybrominated Biphenyls
(PBB), and Polybrominated Diphenyl Ether (PBDE) in Electrical
and Electronic Equipment. This SynQor product is available as
6/6 RoHS compliant. For more information please refer to
SynQor’s RoHS addendum available at our RoHS Compliance /
Lead Free Initiative web page or e-mail us at [email protected]
When the ON/OFF pin goes high after t3, and the Restart Inhibit
Period has elapsed, the output turns on approximately 1.6ms
after the ON/OFF pin is activated, with the Typical Turn-On Time.
If the Under-Voltage Lockout threshold has not been satisfied at
the end of either Inhibit Period, the unit will remain disabled until
the input voltage exceeds the UVLO threshold. Once this occurs,
the output turns on with the Typical Turn-On Time.
If the ON/OFF pin is activated after either Inhibit Period has
elapsed, the output will turn on approximately 1.6ms after the
ON/OFF pin is activated, with the Typical Turn-On Time.
Vin
Under-Voltage
Lockout Turn-On
Threshold
ON/OFF
(pos logic)
ON
Vout
OFF
OFF ON
ON
10ms
13.5ms
(typical turn on time)
(typical start-up
inhibit period)
(typical restart
inhibit period)
t0
t1
200ms
200ms
200ms
t2
t3
t
Figure F: Startup Inhibit Period (turn-on time not to scale)
Product # PQ60033ETL30
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Doc.# 005-2ET633F Rev. A
06/01/06
Page 12
Input:
Output:
Current:
Package:
Technical Specification
35-75 V
3.3 V
30 A
Eighth-brick
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.
A “-G” suffix indicates the product is 6/6 RoHS compliant.
PQ 60 033 E T L 30 N N S - G
6/6 RoHS
Options
(see
Ordering Information)
Output Current
Thermal Design
Performance Level
Package Size
Model Number
Input Voltage
PQ60033ETL30xyz-G
35 - 75 V
Output Max Output
Voltage Current
3.3 V
30 A
The following option choices must be included in place of the
x y z spaces in the model numbers listed above.
Output Voltage
Input Voltage
Product Family
Options Description: x y z
Enable
Logic
Pin
Feature
Length
Set
K - 0.110"
P - Positive N - 0.145"
S - Standard
N - Negative R - 0.180"
Y - 0.250"
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. A “-G” suffix indicates the product is 6/6 RoHS compliant.
Application Notes
A variety of application notes and technical white papers can
be downloaded in pdf format from our website.
Contact SynQor for further information:
Phone:
Toll Free:
Fax:
E-mail:
Web:
Address:
Product # PQ60033ETL30
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
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.# 005-2ET633F Rev. A
06/01/06
Page 13
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