60A/300W

Technical
Specification
IQ48xxxHZXxx
34-75 V
100 V
5.0-50 V 602 W
Continuous Input Transient Input
Outputs
Max Power
2250 Vdc
Half-brick
Isolation
DC-DC Converter
The InQor® Half-brick Zeta converter series is composed
of next-generation, board-mountable, fixed switching
frequency dc-dc converters that use synchronous
rectification to achieve extremely high power conversion
efficiency. Each module is supplied completely encased to
provide protection from the harsh environments seen in
many industrial and transportation applications.
NRF-G
0HZC12
IQ4850CONVERTER
12A
DC-DC
50V OUT @
34-75V IN
Operational Features
•
•
•
•
•
High efficiency, up to 95% at full rated load current
Operating input voltage range: 34-75 V
Fixed frequency switching provides predictable EMI
No minimum load requirement
Optional: Active current share for parallel applications
Protection Features
Mechanical Features
•
•
•
•
Industry standard Half-brick pin-out
Size: 2.386" x 2.486" x 0.512" (60.60 x 63.14 x 13.00 mm)
Total weight: 4.8 oz (136 g)
Flanged baseplate version available
• Input under-voltage lockout
• Output current limit and short circuit protection
• Active backdrive current limit
• Auto-recovery output over-voltage protection
• Thermal shutdown
Control Features
CONTENTS
• On/Off control referenced to input side
• Remote sense for improved output voltage control
• Extended Output Voltage Trim Range
Safety Features
•
•
•
•
UL 60950-1/R:2011-12 Basic Insulation
CAN/CSA-C22.2 No. 60950-1/A1:2011
EN 60950-1/A2:2013
RoHS compliant (see last page)
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
Page No.
Family Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Electrical Characteristics (5.0 Vout) & Figures . . . . . . . . . . . . . . . . . . . . 4
Electrical Characteristics (12 Vout) & Figures . . . . . . . . . . . . . . . . . . . . 6
Electrical Characteristics (15 Vout) & Figures . . . . . . . . . . . . . . . . . . . . 8
Electrical Characteristics (24 Vout) & Figures . . . . . . . . . . . . . . . . . . . 10
Electrical Characteristics (28 Vout) & Figures . . . . . . . . . . . . . . . . . . . 12
Electrical Characteristics (40 Vout) & Figures . . . . . . . . . . . . . . . . . . . 14
Electrical Characteristics (50 Vout) & Figures . . . . . . . . . . . . . . . . . . . 16
Application Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Standards & Qualification Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Standard Mechanical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Flanged Mechanical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 1
Technical
Specification
IQ48xxxHZXxx
IQ48 FAMILY ELECTRICAL CHARACTERISTICS (all output voltages)
Ta = 25 °C, airflow rate = 300 LFM, Vin = 48 Vdc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
Max.
Units Notes & Conditions
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
-1
100
V
Continuous
Operating
80
V
Continuous
Operating Transient
100
V
1 s transient, square wave
Isolation Voltage
Input to Output
2250
Vdc
Input to Baseplate
2250
Vdc
Output to Baseplate
2250
Vdc
Operating Temperature
-40
100
°C
Baseplate temperature
Storage Temperature
-45
125
°C
Voltage at ON/OFF input pin
-2
18
V
INPUT CHARACTERISTICS
Operating Input Voltage Range
34
48
75
V
100 V transient for 1 s
Input Under-Voltage Lockout
Turn-On Voltage Threshold
32.0
33.0
34.0
V
Turn-Off Voltage Threshold
30.0
31.0
32.0
V
Lockout Voltage Hysteresis
2.0
V
Input Over-Voltage Shutdown
V
Not Available
µF
Recommended External Input Capacitance
220
Typical ESR 0.1-0.2 Ω; see Note 3
Input Filter Component Values (C1\Lin\C2)
22/0.75/11
nF/µH/µF Internal values; see Figure D
DYNAMIC CHARACTERISTICS
Turn-On Transient
Turn-On Time
20
25
35
ms
Full load, Vout=90% nom; (from enable) See Note 2
Output Voltage Overshoot
5
%
Maximum Output Capacitance
Auto-Recovery Startup Inhibit Time
500
ms
See Application Section
ISOLATION CHARACTERISTICS
Isolation Voltage (dielectric strength)
See Absolute Maximum Ratings
Isolation Resistance
30
MΩ
Isolation Capacitance (input to output)
1000
pF
See Note 1
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Semiconductor Junction Temperature
125
°C
Package rated to 150 °C
PCB Temperature
125
°C
UL rated max operating temp 130 °C
Transformer Temperature
125
°C
Maximum Baseplate Temperature, Tb
100
°C
FEATURE CHARACTERISTICS
Switching Frequency
230
240
250
kHz
Isolation stage switching freq. is half this
ON/OFF Control
Off-State Voltage
2.4
18.0
V
On-State Voltage
-2.0
0.8
ON/OFF Control
Application notes Figure A
Pull-Up Voltage
18
V
Pull-Up Resistance
49.9
kΩ
Over-Temperature Shutdown OTP Trip Point
125
°C
Average PCB Temperature
Over-Temperature Shutdown Restart Hysteresis
10
°C
RELIABILITY CHARACTERISTICS
Calculated MTBF (Telcordia) TR-NWT-000332
1.44
106 Hrs. Tb = 70 °C
Calculated MTBF (MIL-217) MIL-HDBK-217F
1.2
106 Hrs. Tb = 70 °C
Field Demonstrated MTBF
106 Hrs. See our website for details
Note 1: Higher values of isolation capacitance can be added externally to the module
Note 2: Additional 25ms between enable and start of Turn-On time for full-featured units to set up communication
Note 3: See “Input System Instability” in the Application Considerations section.
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 2
Technical
Specification
IQ48xxxHZXxx
Family Figures (all output voltages)
110%
Nominal Vout
100%
90%
Output Voltage (V)
80%
70%
60%
50%
40%
Current-Limit
Shutdown
30%
35Vin
20%
48Vin
10%
0%
75Vin
0%
20%
40%
60%
80%
100%
120%
140%
Load Current (A)
Common Figure 1: Startup Waveform (typical). Input voltage pre-applied, ON/
OFF Pin on Ch 2. Output voltage normalized.
Common Figure 2: Output I-V Characteristics (output voltage vs. load current)
showing typical current limit curves and converter shutdown points.
100,000
10,000
12 V
24 V
15 V
Trim Resistance (kOhms)
Trim Resistance (kOhms)
5.0 V
1,000
100
10
1
2
3
4
5
6
7
8
9
10
40 V
50 V
10,000
1,000
100
0
28 V
0
1
2
3
4
5
6
7
8
9
10
Increase in Vout (%)
Increase in Vout (%)
Common Figure 3: Trim-Up Graph for 5.0 to 15V outputs.
Common Figure 4: Trim-Up Graph for 24 to 50V outputs.
Trim Resistance (kOhms)
10,000.0
All voltages
1,000.0
100.0
10.0
1.0
0.1
0.0
0
5
10
15
20
25
30
35
Decrease in Vout (%)
40
45
50
Common Figure 5: Trim-Down Graph for all outputs.
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 3
Input:34-75V
Output:5.0V
Current:60A
Part No.:IQ48050HZx60
Technical Specification
IQ48050HZx60 ELECTRICAL CHARACTERISTICS (5.0 Vout)
Ta = 25 °C, airflow rate = 300 LFM, Vin = 48 Vdc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
Max.
Units Notes & Conditions
INPUT CHARACTERISTICS
Maximum Input Current
No-Load Input Current (enabled)
Disabled Input Current
11
A
175
220
mA
5
8
mA
Response to Input Transient
1.2
Input Terminal Ripple Current
250
V
mA
Recommended Input Fuse
40
A
5.070
V
100 % Load, 34 V Vin, trimmed up 10 %
See Figure 6
RMS
Fast acting fuse recommended; see Note 4
OUTPUT CHARACTERISTICS
Output Voltage Set Point
4.918
5.000
Output Voltage Regulation
See Note 3
Over Line
±0.25
Over Load
±0.25
Over Temperature
Total Output Voltage Range
%
%
-65
65
mV
4.850
5.150
V
80
160
mV
Full load
17
35
mV
Full load
60
A
Subject to thermal derating
78.0
Output Voltage Ripple and Noise
20 MHz bandwidth; see Note 1
Peak-to-Peak
RMS
Operating Output Current Range
Output DC Current Limit Inception
Over sample, line, load, temperature & life
0
A
Output voltage 10 % Low
Output DC Current Limit Shutdown Voltage
66.0
72.0
2.0
V
See Note 2
Back-Drive Current Limit while Enabled
20
A
Negative current drawn into output pins
Back-Drive Current Limit while Disabled
3
5
mA
Negative current drawn into output pins
20,000
µF
Vout nominal at full load (resistive load)
Maximum Output Capacitance
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
125
mV
50 % to 75 % to 50 % Iout max; see Figure 5
Settling Time
1000
µs
To within 1 % Vout nom; see Figure 5
10
%
Across Pins 8 & 6; Common Figures 3-5
10
%
Across Pins 8 & 6
6.4
V
Over full temp range
%
See Figure 1 for efficiency curve
Output Voltage Trim Range
-50
Output Voltage Remote Sense Range
Output Over-Voltage Protection
5.9
6.2
EFFICIENCY
100 % Load
93
50 % Load
93
%
See Figure 1 for efficiency curve
Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and
noise, consult SynQor applications support (e-mail: [email protected])
Note 2: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50 ms, then the unit will enter into hiccup mode,
with a 500 ms off-time
Note 3: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference
Note 4: Safety certification requires the use of a fuse rated at or below this value.
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 4
Input:34-75V
Output:5.0V
Current:60A
Part No.:IQ48050HZx60
Technical Specification
95
35
90
30
Power Dissipation (W)
40
Efficiency (%)
100
85
80
75
70
34 Vin
48 Vin
65
60
5
10
15
20
25
30
35
40
45
50
55
20
15
10
34 Vin
48 Vin
5
75 Vin
0
25
0
60
75 Vin
0
5
10
15
20
Load Current (A)
Figure 1: Efficiency at nominal output voltage vs. load current for minimum,
nominal, and maximum input voltage at 25 °C.
30
35
40
45
50
55
60
Figure 2: Power Dissipation at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25 °C.
70
80
60
70
50
60
40
Iout (A)
Iout (A)
25
Load Current (A)
30
50
40
20
30
10
20
0
10
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
50
60
70
80
90
100
110
0
Baseplate Temperature (°C)
100 LFM (0.5 m/s)
25
40
55
Ambient Air Temperature (°C)
70
85
Figure 3: Maximum load current vs. baseplate temperature when conductively
cooled. Note: The system design must provide a suitable thermal path that
maintains the baseplate temperature below 100 °C.
Figure 4: Thermal Derating (max output current vs. ambient air temperature)
for encased converter with 1/2" heatsink, at airflow rates of 100 LFM through
400 LFM. Air flows across the converter from input to output (nominal input
voltage).
Figure 5: Output Voltage Response to Step-Change in Load Current (50 %- 75
% -50 % of Iout(max); dI/dt = 0.1 A/µs). Load cap: 15 µF tantalum cap and 1
µF ceramic cap. Ch 1: Vout, Ch 2: Iout (20 A/div).
Figure 6: Output Voltage Response to Step-Change in Input Voltage (500 V/
ms), at Max. load current. Load cap: 100µF electrolytic cap and 1µF ceramic
cap. Ch 1: Vout, Ch 2: Vin.
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 5
Input:34-75V
Output:12V
Current:50A
Part No.:IQ48120HZx50
Technical Specification
IQ48120HZx50 ELECTRICAL CHARACTERISTICS (12.0 Vout)
Ta = 25 °C, airflow rate = 300 LFM, Vin = 48 Vdc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
Max.
Units Notes & Conditions
INPUT CHARACTERISTICS
Maximum Input Current
No-Load Input Current (enabled)
Disabled Input Current
21
A
200
250
mA
5
8
mA
Response to Input Transient
2.5
Input Terminal Ripple Current
60
V
mA
Recommended Input Fuse
40
A
12.17
V
100 % Load, 34 V Vin, trimmed up 10 %
See Figure 6
RMS
Fast acting fuse recommended; see Note 4
OUTPUT CHARACTERISTICS
Output Voltage Set Point
11.80
12.00
Output Voltage Regulation
See Note 3
Over Line
±0.25
Over Load
±0.25
Over Temperature
Total Output Voltage Range
%
%
-156
156
mV
11.64
12.36
V
150
300
mV
Full load
30
60
mV
Full load
50
A
Subject to thermal derating
65.0
Output Voltage Ripple and Noise
Over sample, line, load, temperature & life
20 MHz bandwidth; see Note 1
Peak-to-Peak
RMS
Operating Output Current Range
0
Output DC Current Limit Inception
A
Output voltage 10 % Low
Output DC Current Limit Shutdown Voltage
55.0
60.0
4.8
V
See Note 2
Back-Drive Current Limit while Enabled
16
A
Negative current drawn into output pins
Back-Drive Current Limit while Disabled
3
5
mA
Negative current drawn into output pins
12,000
µF
Vout nominal at full load (resistive load)
Maximum Output Capacitance
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
300
mV
50 % to 75 % to 50 % Iout max; see Figure 5
Settling Time
500
µs
To within 1 % Vout nom; see Figure 5
10
%
Across Pins 8 & 6; Common Figures 3-5
10
%
Across Pins 8 & 6
15.4
V
Over full temp range
%
See Figure 1 for efficiency curve
Output Voltage Trim Range
-50
Output Voltage Remote Sense Range
Output Over-Voltage Protection
14.2
14.8
EFFICIENCY
100 % Load
95
50 % Load
95
%
See Figure 1 for efficiency curve
Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and
noise, consult SynQor applications support (e-mail: [email protected])
Note 2: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50 ms, then the unit will enter into hiccup mode,
with a 500 ms off-time
Note 3: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference
Note 4: Safety certification requires the use of a fuse rated at or below this value.
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 6
Input:34-75V
Output:12V
Current:50A
Part No.:IQ48120HZx50
Technical Specification
60
100
95
50
Power Dissipation (W)
Efficiency (%)
90
85
80
75
70
34 Vin
60
30
20
34 Vin
10
48 Vin
65
40
48 Vin
75 Vin
0
5
10
15
20
25
30
35
40
45
75 Vin
0
50
0
5
10
15
Load Current (A)
25
30
35
40
45
50
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: Power Dissipation at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25 °C.
60
60
50
50
40
40
Iout (A)
Iout (A)
20
30
20
30
20
10
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
10
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
50
60
70
80
90
100
0
110
Baseplate Temperature (°C)
25
40
55
70
85
Ambient Air Temperature (°C)
Figure 3: Maximum load current vs. baseplate temperature when conductively
cooled. Note: The system design must provide a suitable thermal path that
maintains the baseplate temperature below 100 °C.
Figure 4: Thermal Derating (max output current vs. ambient air temperature)
for encased converter with 1/2" heatsink, at airflow rates of 100 LFM through
400 LFM. Air flows across the converter from input to output (nominal input
voltage).
Figure 5: Output Voltage Response to Step-Change in Load Current (50 % -75
% -50 % of Iout(max); dI/dt = 0.1 A/µs. Load cap: 15 µF tantalum cap and 1 µF
ceramic cap. Ch 1: Vout, Ch 2: Iout (20 A/div).
Figure 6: Output Voltage Response to Step-Change in Input Voltage (500 V/
ms), at Max. load current. Load cap: 100 µF electrolytic cap and 1 µF ceramic
cap. Ch 1: Vout, Ch 2: Vin.
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 7
Input:34-75V
Output:15V
Current:40A
Part No.:IQ48150HZx40
Technical Specification
IQ48150HZx40 ELECTRICAL CHARACTERISTICS (15.0 Vout)
Ta = 25 °C, airflow rate = 300 LFM, Vin = 48 Vdc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
Max.
Units Notes & Conditions
INPUT CHARACTERISTICS
Maximum Input Current
No-Load Input Current (enabled)
Disabled Input Current
21
A
200
250
mA
5
8
mA
Response to Input Transient
2.3
Input Terminal Ripple Current
150
V
mA
Recommended Input Fuse
40
A
15.21
V
100 % Load, 34 V Vin, trimmed up 10 %
See Figure 6
RMS
Fast acting fuse recommended; see Note 4
OUTPUT CHARACTERISTICS
Output Voltage Set Point
14.75
15.00
Output Voltage Regulation
See Note 3
Over Line
±0.25
Over Load
±0.25
Over Temperature
Total Output Voltage Range
%
%
-195
195
mV
14.55
15.45
V
180
360
mV
Full load
25
50
mV
Full load
40
A
Subject to thermal derating
54.0
Output Voltage Ripple and Noise
Over sample, line, load, temperature & life
20 MHz bandwidth; see Note 1
Peak-to-Peak
RMS
Operating Output Current Range
0
Output DC Current Limit Inception
A
Output voltage 10 % Low
Output DC Current Limit Shutdown Voltage
44.0
48.0
6.0
V
See Note 2
Back-Drive Current Limit while Enabled
13
A
Negative current drawn into output pins
Back-Drive Current Limit while Disabled
3
5
mA
Negative current drawn into output pins
10,000
µF
Vout nominal at full load (resistive load)
Maximum Output Capacitance
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
350
mV
50 % to 75 % to 50 % Iout max; see Figure 5
Settling Time
500
µs
To within 1 % Vout nom; see Figure 5
10
%
Across Pins 8 & 6; Common Figures 3-5
10
%
Across Pins 8 & 6
19.2
V
Over full temp range
%
See Figure 1 for efficiency curve
Output Voltage Trim Range
-50
Output Voltage Remote Sense Range
Output Over-Voltage Protection
17.7
18.5
EFFICIENCY
100 % Load
94
50 % Load
95
%
See Figure 1 for efficiency curve
Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and
noise, consult SynQor applications support (e-mail: [email protected])
Note 2: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50 ms, then the unit will enter into hiccup mode,
with a 500 ms off-time
Note 3: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference
Note 4: Safety certification requires the use of a fuse rated at or below this value.
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 8
Input:34-75V
Output:15V
Current:40A
Part No.:IQ48150HZx40
Technical Specification
60
100
95
50
Power Dissipation (W)
Efficiency (%)
90
85
80
75
70
35 Vin
60
30
20
35 Vin
10
48 Vin
65
40
48 Vin
75 Vin
0
4
8
12
16
20
24
28
32
36
75 Vin
0
40
0
4
8
12
Load Current (A)
16
20
24
28
32
36
40
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: Power Dissipation at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25 °C.
45
50
40
40
35
25
Iout (A)
Iout (A)
30
20
15
30
20
400 LFM (2.0 m/s)
10
10
5
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
50
60
70
80
90
100
0
110
Baseplate Temperature (°C)
25
40
55
70
85
Ambient Air Temperature (°C)
Figure 3: Maximum load current vs. baseplate temperature when conductively
cooled. Note: The system design must provide a suitable thermal path that
maintains the baseplate temperature below 100 °C.
Figure 4: Thermal Derating (max output current vs. ambient air temperature)
for encased converter with 1/2" heatsink, at airflow rates of 100 LFM through
400 LFM. Air flows across the converter from input to output (nominal input
voltage).
Figure 5: Output Voltage Response to Step-Change in Load Current (50 % -75
% -50 % of Iout(max); dI/dt = 0.1 A/µs. Load cap: 15 µF tantalum cap and 1 µF
ceramic cap. Ch 1: Vout, Ch 2: Iout (10 A/div).
Figure 6: Output Voltage Response to Step-Change in Input Voltage (500 V/
ms), at Max. load current. Load cap: 100 µF electrolytic cap and 1 µF ceramic
cap. Ch 1: Vout, Ch 2: Vin.
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 9
Input:34-75V
Output:24V
Current:25A
Part No.:IQ48240HZx25
Technical Specification
IQ48240HZx25 ELECTRICAL CHARACTERISTICS (24.0 Vout)
Ta = 25 °C, airflow rate = 300 LFM, Vin = 48 Vdc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
Max.
Units Notes & Conditions
INPUT CHARACTERISTICS
Maximum Input Current
No-Load Input Current (enabled)
Disabled Input Current
21
A
200
250
mA
5
8
mA
Response to Input Transient
4.5
Input Terminal Ripple Current
150
Recommended Input Fuse
V
mA
40
A
24.34
V
100 % Load, 34 V Vin, trimmed up 10 %
See Figure 6
RMS
Fast acting fuse recommended; see Note 4
OUTPUT CHARACTERISTICS
Output Voltage Set Point
23.60
24.00
Output Voltage Regulation
See Note 3
Over Line
±0.25
Over Load
±0.25
Over Temperature
Total Output Voltage Range
%
%
-312
312
mV
23.28
24.72
V
280
560
mV
Full load
65
130
mV
Full load
25
A
Subject to thermal derating
32.5
Output Voltage Ripple and Noise
Over sample, line, load, temperature & life
20 MHz bandwidth; see Note 1
Peak-to-Peak
RMS
Operating Output Current Range
0
Output DC Current Limit Inception
27.5
A
Output voltage 10 % Low
9.6
V
See Note 2
Back-Drive Current Limit while Enabled
8
A
Negative current drawn into output pins
Back-Drive Current Limit while Disabled
3
5
mA
Negative current drawn into output pins
6000
µF
Vout nominal at full load (resistive load)
Output DC Current Limit Shutdown Voltage
30.0
Maximum Output Capacitance
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
800
mV
50 % to 75 % to 50 % Iout max; see Figure 5
Settling Time
500
µs
To within 1 % Vout nom; see Figure 5
10
%
Across Pins 8 & 6; Common Figures 3-5
10
%
Across Pins 8 & 6
30.7
V
Over full temp range
%
See Figure 1 for efficiency curve
Output Voltage Trim Range
-50
Output Voltage Remote Sense Range
Output Over-Voltage Protection
28.3
29.5
EFFICIENCY
100 % Load
94
50 % Load
95
%
See Figure 1 for efficiency curve
Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and
noise, consult SynQor applications support (e-mail: [email protected])
Note 2: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50 ms, then the unit will enter into hiccup mode,
with a 500 ms off-time
Note 3: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference
Note 4: Safety certification requires the use of a fuse rated at or below this value.
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 10
Input:34-75V
Output:24V
Current:25A
Part No.:IQ48240HZx25
Technical Specification
95
70
90
60
Power Dissipation (W)
80
Efficiency (%)
100
85
80
75
70
34 Vin
48 Vin
65
60
5
10
15
20
40
30
20
34 Vin
48 Vin
10
75 Vin
0
50
0
25
75 Vin
0
5
10
Load Current (A)
15
20
25
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: Power Dissipation at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25 °C.
30
30
25
25
20
Iout (A)
Iout (A)
20
15
15
10
10
5
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
5
0
50
60
70
80
90
100
110
0
Baseplate Temperature (°C)
Figure 3: Maximum load current vs. baseplate temperature when conductively
cooled. Note: The system design must provide a suitable thermal path that
maintains the baseplate temperature below 100 °C.
Figure 5: Output Voltage Response to Step-Change in Load Current (50 % -75
% -50 % of Iout(max); dI/dt = 0.1 A/µs. Load cap: 15 µF tantalum cap and 1 µF
ceramic cap. Ch 1: Vout, Ch 2: Iout (10 A/div).
Product # IQ48xxxHZXxx
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100 LFM (0.5 m/s)
25
40
55
Ambient Air Temperature (°C)
70
85
Figure 4: Thermal Derating (max output current vs. ambient air temperature)
for encased converter with 1/2” heatsink, at airflow rates of 100 LFM through
400 LFM. Air flows across the converter from input to output (nominal input
voltage).
Figure 6: Output Voltage Response to Step-Change in Input Voltage (500 V/
ms), at Max. load current. Load cap: 100 µF electrolytic cap and 1 µF ceramic
cap. Ch 1: Vout, Ch 2: Vin.
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 11
Input:34-75V
Output:28V
Current:21.5A
Part No.:IQ48280HZx22
Technical Specification
IQ48280HZx22 ELECTRICAL CHARACTERISTICS (28.0 Vout)
Ta = 25 °C, airflow rate = 300 LFM, Vin = 48 Vdc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
Max.
Units Notes & Conditions
INPUT CHARACTERISTICS
Maximum Input Current
No-Load Input Current (enabled)
21
A
180
230
mA
Disabled Input Current
5
8
mA
Response to Input Transient
4
Input Terminal Ripple Current
V
250
mA
Recommended Input Fuse
40
A
28.39
V
100 % Load, 34 V Vin, trimmed up 10 %
See Figure 6
RMS
Fast acting fuse recommended; see Note 4
OUTPUT CHARACTERISTICS
Output Voltage Set Point
27.54
28.00
Output Voltage Regulation
See Note 3
Over Line
±0.25
Over Load
±0.25
Over Temperature
Total Output Voltage Range
%
%
-420
420
mV
27.16
28.84
V
340
mV
Full load
Full load
Output Voltage Ripple and Noise
Over sample, line, load, temperature & life
20 MHz bandwidth; see Note 1
Peak-to-Peak
170
RMS
45
Operating Output Current Range
0
Output DC Current Limit Inception
23.0
25.0
90
mV
21.5
A
Subject to thermal derating
27.5
A
Output voltage 10 % Low
Output DC Current Limit Shutdown Voltage
11
V
See Note 2
Back-Drive Current Limit while Enabled
7
A
Negative current drawn into output pins
Back-Drive Current Limit while Disabled
3
5
mA
Negative current drawn into output pins
5,000
µF
Vout nominal at full load (resistive load)
Maximum Output Capacitance
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
1000
mV
50 % to 75 % to 50 % Iout max; see Figure 5
Settling Time
750
µs
To within 1 % Vout nom; see Figure 5
10
%
Across Pins 8 & 6; Common Figures 3-5
10
%
Across Pins 8 & 6
35.8
V
Over full temp range
%
See Figure 1 for efficiency curve
Output Voltage Trim Range
-50
Output Voltage Remote Sense Range
Output Over-Voltage Protection
33.0
34.4
EFFICIENCY
100 % Load
94
50 % Load
95
%
See Figure 1 for efficiency curve
Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and
noise, consult SynQor applications support (e-mail: [email protected])
Note 2: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50 ms, then the unit will enter into hiccup mode,
with a 500 ms off-time
Note 3: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference
Note 4: Safety certification requires the use of a fuse rated at or below this value.
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 12
Input:34-75V
Output:28V
Current:21.5A
Part No.:IQ48280HZx22
Technical Specification
100
60
95
50
Power Dissipation (W)
Efficiency (%)
90
85
80
75
70
35 Vin
30
20
35 Vin
10
48 Vin
65
40
48 Vin
75 Vin
75 Vin
60
0
3
6
9
12
Load Current (A)
15
18
0
21
Figure 1: Efficiency at nominal output voltage vs. load current for minimum,
nominal, and maximum input voltage at 25 °C.
0
3
6
9
12
Load Current (A)
15
18
21
Figure 2: Power Dissipation at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25 °C.
25
24
21
20
15
15
Iout (A)
Iout (A)
18
10
12
9
400 LFM (2.0 m/s)
6
5
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
3
100 LFM (0.5 m/s)
0
50
60
70
80
90
100
0
110
Baseplate Temperature (°C)
25
40
55
70
85
Ambient Air Temperature (°C)
Figure 3: Maximum load current vs. baseplate temperature when conductively
cooled. Note: The system design must provide a suitable thermal path that
maintains the baseplate temperature below 100 °C.
Figure 4: Thermal Derating (max output current vs. ambient air temperature)
for encased converter with 1/2" heatsink, at airflow rates of 100 LFM through
400 LFM. Air flows across the converter from input to output (nominal input
voltage).
Figure 5: Output Voltage Response to Step-Change in Load Current (50 % -75
% -50 % of Iout(max); dI/dt = 0.1 A/µs. Load cap: 15 µF tantalum cap and 1 µF
ceramic cap. Ch 1: Vout, Ch 2: Iout (10 A/div).
Figure 6: Output Voltage Response to Step-Change in Input Voltage (500 V/
ms), at Max. load current. Load cap: 100 µF electrolytic cap and 1 µF ceramic
cap. Ch 1: Vout, Ch 2: Vin.
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 13
Input:34-75V
Output:40V
Current:15A
Part No.:IQ48400HZx15
Technical Specification
IQ48400HZx15 ELECTRICAL CHARACTERISTICS (40.0 Vout)
Ta = 25 °C, airflow rate = 300 LFM, Vin = 48 Vdc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
Max.
Units Notes & Conditions
INPUT CHARACTERISTICS
Maximum Input Current
No-Load Input Current (enabled)
Disabled Input Current
21
A
150
190
mA
5
8
mA
Response to Input Transient
4.5
Input Terminal Ripple Current
550
V
mA
Recommended Input Fuse
40
A
40.56
V
100 % Load, 34 V Vin, trimmed up 10 %
See Figure 6
RMS
Fast acting fuse recommended; see Note 4
OUTPUT CHARACTERISTICS
Output Voltage Set Point
39.34
40.00
Output Voltage Regulation
See Note 3
Over Line
±0.25
Over Load
±0.25
Over Temperature
Total Output Voltage Range
%
%
-520
520
mV
38.80
41.20
V
250
500
mV
Full load
40
80
mV
Full load
15
A
Subject to thermal derating
19.5
Output Voltage Ripple and Noise
Over sample, line, load, temperature & life
20 MHz bandwidth; see Note 1
Peak-to-Peak
RMS
Operating Output Current Range
0
Output DC Current Limit Inception
A
Output voltage 10 % Low
Output DC Current Limit Shutdown Voltage
16.5
18.0
16
V
See Note 2
Back-Drive Current Limit while Enabled
5
A
Negative current drawn into output pins
Back-Drive Current Limit while Disabled
3
5
mA
Negative current drawn into output pins
2200
µF
Vout nominal at full load (resistive load)
Maximum Output Capacitance
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
1.75
V
50 % to 75 % to 50 % Iout max; see Figure 5
Settling Time
500
µs
To within 1 % Vout nom; see Figure 5
10
%
Across Pins 8 & 6; Common Figures 3-5
10
%
Across Pins 8 & 6
51.2
V
Over full temp range
%
See Figure 1 for efficiency curve
Output Voltage Trim Range
-50
Output Voltage Remote Sense Range
Output Over-Voltage Protection
47.2
49.2
EFFICIENCY
100 % Load
94
50 % Load
95
%
See Figure 1 for efficiency curve
Note 1: Output is terminated with 1 µF ceramic and 15 µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and
noise, consult SynQor applications support (e-mail: [email protected])
Note 2: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50 ms, then the unit will enter into hiccup mode,
with a 500 ms off-time
Note 3: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference
Note 4: Safety certification requires the use of a fuse rated at or below this value.
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 14
Input:34-75V
Output:40V
Current:15A
Part No.:IQ48400HZx15
Technical Specification
60
100
95
50
Power Dissipation (W)
Efficiency (%)
90
85
80
75
70
35 Vin
20
35 Vin
48 Vin
75 Vin
75 Vin
60
0
0
3
6
9
Load Current (A)
12
15
Figure 1: Efficiency at nominal output voltage vs. load current for minimum,
nominal, and maximum input voltage at 25 °C.
0
3
6
9
Load Current (A)
12
15
Figure 2: Power Dissipation at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25 °C.
16
18
14
15
12
12
10
Iout (A)
Iout (A)
30
10
48 Vin
65
40
8
6
9
6
4
2
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
3
0
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
50
60
70
80
90
100
0
110
Baseplate Temperature (°C)
25
40
55
70
85
Ambient Air Temperature (°C)
Figure 3: Maximum load current vs. baseplate temperature when conductively
cooled. Note: The system design must provide a suitable thermal path that
maintains the baseplate temperature below 100 °C.
Figure 4: Thermal Derating (max output current vs. ambient air temperature)
for encased converter with 1/2" heatsink, at airflow rates of 100 LFM through
400 LFM. Air flows across the converter from input to output (nominal input
voltage).
Figure 5: Output Voltage Response to Step-Change in Load Current (50 % -75
% -50 % of Iout(max); dI/dt = 0.1 A/µs. Load cap: 15 µF tantalum cap and 1 µF
ceramic cap. Ch 1: Vout, Ch 2: Iout (5 A/div).
Figure 6: Output Voltage Response to Step-Change in Input Voltage (500 V/
ms), at Max. load current. Load cap: 100 µF electrolytic cap and 1 µF ceramic
cap. Ch 1: Vout, Ch 2: Vin.
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 15
Input:34-75V
Output:50V
Current:12A
Part No.:IQ48500HZx12
Technical Specification
IQ48500HZx12 ELECTRICAL CHARACTERISTICS (50.0 Vout)
Ta = 25 °C, airflow rate = 300 LFM, Vin = 48 Vdc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature
with appropriate power derating. Specifications subject to change without notice.
Parameter
Min.
Typ.
Max.
Units Notes & Conditions
INPUT CHARACTERISTICS
Maximum Input Current
No-Load Input Current (enabled)
Disabled Input Current
21
A
150
190
mA
5
8
mA
Response to Input Transient
6.5
Input Terminal Ripple Current
150
V
mA
Recommended Input Fuse
40
A
50.70
V
100 % Load, 34 V Vin, trimmed up 10 %
See Figure 6
RMS
Fast acting fuse recommended; see Note 4
OUTPUT CHARACTERISTICS
Output Voltage Set Point
49.18
50.00
Output Voltage Regulation
See Note 3
Over Line
±0.25
Over Load
±0.25
Over Temperature
Total Output Voltage Range
%
%
-650
650
mV
48.50
51.50
V
250
500
mV
Full load
50
100
mV
Full load
12
A
Subject to thermal derating
15.6
Output Voltage Ripple and Noise
Over sample, line, load, temperature & life
20 MHz bandwidth; see Note 1
Peak-to-Peak
RMS
Operating Output Current Range
0
Output DC Current Limit Inception
A
Output voltage 10 % Low
Output DC Current Limit Shutdown Voltage
13.2
14.4
20
V
See Note 2
Back-Drive Current Limit while Enabled
4
A
Negative current drawn into output pins
Back-Drive Current Limit while Disabled
3
5
mA
Negative current drawn into output pins
1000
µF
Vout nominal at full load (resistive load)
Maximum Output Capacitance
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
1.5
V
50 % to 75 % to 50 % Iout max; see Figure 5
Settling Time
500
µs
To within 1 % Vout nom; see Figure 5
10
%
Across Pins 8 & 6; Common Figures 3-5
10
%
Across Pins 8 & 6
64.0
V
Over full temp range
%
See Figure 1 for efficiency curve
Output Voltage Trim Range
-50
Output Voltage Remote Sense Range
Output Over-Voltage Protection
59.0
61.5
EFFICIENCY
100 % Load
95.0
50 % Load
95.5
%
See Figure 1 for efficiency curve
Note 1: Output is terminated with 1 µF ceramic capacitor. For applications requiring reduced output voltage ripple and noise, consult SynQor applications
support (e-mail: [email protected])
Note 2: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50 ms, then the unit will enter into hiccup mode,
with a 500 ms off-time
Note 3: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference
Note 4: Safety certification requires the use of a fuse rated at or below this value.
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 16
Input:34-75V
Output:50V
Current:12A
Part No.:IQ48500HZx12
Technical Specification
100
60
95
50
Power Dissipation (W)
Efficiency (%)
90
40
85
80
30
75
20
70
35 Vin
35 Vin
10
48 Vin
65
48 Vin
75 Vin
75 Vin
60
0
1
2
3
4
5
6
7
8
9
10
11
0
12
0
1
2
3
4
Load Current (A)
Figure 1: Efficiency at nominal output voltage vs. load current for minimum,
nominal, and maximum input voltage at 25 °C.
9
10
11
12
Figure 2: Power Dissipation at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25 °C.
14
14
12
12
10
10
8
Iout (A)
Iout (A)
5
6
7
8
Load Current (A)
6
4
8
6
4
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
2
2
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
50
60
70
80
90
100
0
110
Baseplate Temperature (°C)
25
40
55
70
85
Ambient Air Temperature (°C)
Figure 3: Maximum load current vs. baseplate temperature when conductively
cooled. Note: The system design must provide a suitable thermal path that
maintains the baseplate temperature below 100 °C.
Figure 4: Thermal Derating (max output current vs. ambient air temperature)
for encased converter with 1/2" heatsink, at airflow rates of 100 LFM through
400 LFM. Air flows across the converter from input to output (nominal input
voltage).
Figure 5: Output Voltage Response to Step-Change in Load Current (50 %
-75 % -50 % of Iout(max); dI/dt = 0.1 A/µs. Load cap: 1 µF ceramic cap. Ch 1:
Vout, Ch 2: Iout (5 A/div).
Figure 6: Output Voltage Response to Step-Change in Input Voltage (500 V/
ms), at Max. load current. Load cap: 100 µF electrolytic cap and 1 µF ceramic
cap. Ch 1: Vout, Ch 2: Vin.
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 17
Technical
Specification
IQ48xxxHZXxx
Application Section
BASIC OPERATION AND FEATURES
CONTROL FEATURES
This converter series uses a two-stage power conversion
topology. The first stage keeps the output voltage constant over
variations in line, load, and temperature. The second stage uses
a transformer to provide the functions of input/output isolation
and voltage step-down to achieve the low output voltage required.
REMOTE ON/OFF (Pin 2): The ON/OFF input, Pin 2, permits
the user to control when the converter is on or off. This input is
referenced to the return terminal of the input bus, Vin(-).
Both the first stage and the second stage switch at a fixed
frequency for predictable EMI performance. Rectification of the
transformer’s output is accomplished with synchronous rectifiers.
These devices, which are MOSFETs with a very low on-state
resistance, dissipate significantly less energy than Schottky
diodes, enabling the converter to achieve high efficiency.
Dissipation throughout the converter is so low that it does not
require a heatsink or even a baseplate for operation in many
applications; however, adding a heatsink provides improved
thermal derating performance in extreme situations. To further
withstand harsh environments and thermally demanding
applications, certain models are available totally encased. See
Ordering Information page for available thermal design options.
SynQor half-brick converters use the industry standard footprint
and pin-out.
ON/OFF
ON/OFF
ON/OFF
In negative logic versions, the ON/OFF signal is active low
(meaning that a low voltage turns the converter on). In positive
logic versions, the ON/OFF input is active high (meaning that a
high voltage turns the converter on). Figure A details possible
circuits for driving the ON/OFF pin. Figure B is a detailed look of
the internal ON/OFF circuitry. See Ordering Information page for
available enable logics.
REMOTE SENSE Pins 8(+) and 6(-): The SENSE(+) and
SENSE(-) inputs correct for voltage drops along the conductors
that connect the converter’s output pins to the load.
Pin 8 should be connected to Vout(+) and Pin 6 should be
connected to Vout(-) at the point on the board where regulation
is desired. If these connections are not made, the converter will
deliver an output voltage that is slightly higher than its specified
value.
Note: The Output Over-Voltage Protection circuit senses the
voltage across the output (Pins 9 and 5) to determine when it
should trigger, not the voltage across the converter’s sense leads
(Pins 8 and 6). Therefore, the resistive drop on the board should
be small enough so that output OVP does not trigger, even during
load transients.
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. SynQor uses industry
standard trim equations.
Vin(_)
Vin(_)
Remote Enable Circuit
Negative Logic
(Permanently
Enabled)
5V
ON/OFF
Vin(_)
Positive Logic
(Permanently
Enabled)
TTL/
CMOS
To decrease the output voltage, the user should connect a resistor
between Pin 7 (TRIM) and Pin 6 (SENSE(-) input). For a desired
decrease of the nominal output voltage, the value of the resistor
should be:
ON/OFF
(
100%
Rtrim-down =
Δ% =
|
Vnominal – Vdesired
Δ%
–2
) kΩ
where
Vin(_)
Vin( )
_
Open Collector Enable Circuit
Direct Logic Drive
Figure A: Various Circuits for Driving the ON/OFF Pin
18V(max)
| × 100%
To increase the output voltage, the user should connect a resistor
between Pin 7 (TRIM) and Pin 8 (SENSE(+) input). For a desired
increase of the nominal output voltage, the value of the resistor
should be:
5V
50k
ON/OFF
Vnominal
10k
Rtrim-up =
TTL
(
)
Vnominal
–2
× Vdesired + Vnominal kΩ
1.225
Vdesired – Vnominal
Vin(_)
Figure B: Internal ON/OFF Pin Circuitry
Product # IQ48xxxHZXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 18
Technical
Specification
IQ48xxxHZXxx
Application Section
The Trim Graph in Technical Features shows 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.
Note: The TRIM feature does not affect the voltage at which the
output over-voltage protection circuit is triggered. Trimming the
output voltage too high may cause the over-voltage protection
circuit to engage, particularly during transients.
It is not necessary for the user to add capacitance at the TRIM pin.
The node is internally filtered 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.
Protection Features
Input Under-Voltage Lockout (UVLO): The converter is
designed to turn off when the input voltage is too low, helping to
avoid an input system instability problem, which is described in
more detail in the application note titled “Input System Instability”
on the SynQor website. The lockout circuitry is a comparator with
DC hysteresis. When the input voltage is rising, it must exceed the
typical “Turn-On Voltage Threshold” value* 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 (OCP): If the output current exceeds
the “Output DC Current Limit Inception” value*, then a fast linear
current limit controller will reduce the output voltage to maintain
a constant output current. If as a result, the output voltage falls
below the “Output DC Current Limit Shutdown Voltage”* for more
than 50 ms, then the unit will enter into hiccup mode, with a 500
ms off-time. The unit will then automatically attempt to restart.
Back-Drive Current Limit: If there is negative output current
of a magnitude larger than the “Back-Drive Current Limit while
Enabled” specification*, then a fast back-drive limit controller will
increase the output voltage to maintain a constant output current.
If this results in the output voltage exceeding the “Output OverVoltage Protection” threshold*, then the unit will shut down.
Output Over-Voltage Limit (OVP): 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
500ms the converter will automatically restart for all but the S
Feature Set option, which is latching and will not restart until input
power is cycled or the ON/OFF input is toggled.
Over-Temperature Shutdown (OTP): 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*.
Startup Inhibit Period: The Startup Inhibit Period ensures that
the converter will remain off for approximately 500 ms when it is
shut down due to a fault. This generates a 2 Hz “hiccup mode,”
which prevents the converter from overheating. In all, there
are three ways that the converter can be shut down, initiating a
Startup Inhibit Period:
• Output Over-Voltage Protection
• Current Limit
• Short Circuit Protection
* See Electrical Characteristics section.
Product # IQ48xxxHZXxx
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Page 19
Technical
Specification
IQ48xxxHZXxx
Application Section
APPLICATION CONSIDERATIONS
Input System Instability: This condition can occur because any
DC-DC converter appears incrementally as a negative resistance
load. A detailed application note titled “Input System Instability” is
available on the SynQor website which provides an understanding
of why this instability arises, and shows the preferred solution for
correcting it.
Application Circuits: A typical circuit diagram, Figure C below
details the input filtering and voltage trimming.
Input Filtering and External Input Capacitance: Figure
D below shows the internal input filter components. This filter
dramatically reduces input terminal ripple current, which otherwise
could exceed the rating of an external electrolytic input capacitor.
The recommended external input capacitance is specified in the
Input Characteristics section of the Electrical Specifications. More
detailed information is available in the application note titled “EMI
Characteristics” on the SynQor website.
Output Filtering and External Output Capacitance: The
internal output filter components are shown in Figure D below.
This filter dramatically reduces output voltage ripple. Some
minimum external output capacitance is required, as specified in
the Output Characteristics area of the Electrical Characteristics
section. No damage will occur without this capacitor connected,
but peak output voltage ripple will be much higher.
Thermal Considerations: For baseplated and encased versions,
the max operating baseplate temperature, TB, is 100ºC. Refer to
the Thermal Derating Curves in the Technical Figures section to
see the available output current at baseplate temperatures below
100ºC.
A power derating curve can be calculated for any heatsink that is
attached to the base-plate of the converter. It is only necessary to
determine the thermal resistance, RTHBA, of the chosen heatsink
between the baseplate and the ambient air for a given airflow
rate. This information is usually available from the heatsink vendor.
The following formula can the be used to determine the maximum
power the converter can dissipate for a given thermal condition if
its base-plate is to be no higher than 100ºC.
100 ºC - TA
RTHBA
This value of maximum power dissipation can then be used in
conjunction with the data shown in the Power Dissipation Curves
in the Technical Figures section to determine the maximum load
current (and power) that the converter can deliver in the given
thermal condition.
For convenience, Thermal Derating Curves are provided in the
Technical Figures section.
max
Pdiss
Vin(+)
Vin
Vout(+)
Vsense(+)
Electrolytic
Capacitor
External
Input
Filter
=
ON/OFF
Trim
Vsense(_)
Vin(_)
Rtrim-up
or
Rtrim-down
Cload
Iload
Vout(_)
Figure C: Typical Application Circuit (negative logic unit, permanently enabled)
Lin
Vin(+)
Vout(+)
C1
C2
Regulation
Stage
Current
Sense
Isolation
Stage
Vin(_)
Vout(-)
Figure D: Internal Input and Output Filter Diagram (component values listed in Electrical Characteristics section)
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Technical
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IQ48xxxHZXxx
Application Section
ACTIVE CURRENT SHARE
Overview: The full-featured option, specified by an “F” in the
last character in the part number, has current sharing operation
supported, achieved by adding two additional pins: SHARE(+) and
SHARE(-).
Connection of Paralleled Units: Up to 100 units can be placed in
parallel. In this current share architecture, one unit is dynamically
chosen to act as a master, controlling all other units. It cannot be
predicted which unit will become the master at any given time, so
units should be wired symmetrically (see Figures E & F).
• Input power pins and output power pins should be tied
together between units, preferably with wide overlapping
copper planes, after any input common-mode choke.
• The SHARE(+) and SHARE(-) pins should be routed between
all paralleled units as a differential pair.
• The ON/OFF pins should be connected in parallel, and
rise/fall times should be kept below 2 ms.
• The SENSE(+) and SENSE(-) pins should be connected either
locally at each unit or separately to a common sense point.
If an output common-mode choke is used, sense lines
should be connected on the module-side of the choke.
• If the TRIM pin is used, then each unit should have its own
trim resistor connected locally between TRIM and SENSE(+)
or SENSE(-).
Vin(+)
Sense(+)
On/Off
≥1 nF
Elec.
Cap.
A
A
Share(+)
Trim
≥10 μF
Share(-)
Sense(-)
Vin(-)
Vout(-)
Vin(+)
Vout(+)
Sense(+)
On/Off
Electrolytic
Capacitor
470 nH (nom)
Vout(+)
Share(+)
Load
B
B
470 nH (nom)
A
Trim
≥10 μF
Share(-)
Sense(-)
Vin(-)
B
Vout(-)
Up to 100 Units
Vin(+)
On/Off
Electrolytic
Capacitor
Share(+)
470 nH (nom)
Vout(+)
Sense(+)
A
Trim
≥10 μF
Share(-)
Sense(-)
Vin(-)
B
Vout(-)
Figure E: Typical Application Circuit for Paralleling of Full-Featured Units with an Input Common-Mode Choke. If an input common-mode choke is used, Vin(-)
MUST be tied together AFTER the choke for all units. 470 nH (nominal) inductor or an output common-mode choke is required for outputs >18 V. See Figure F for
output common-mode choke configuration.
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Technical
Specification
IQ48xxxHZXxx
Application Section
Automatic Configuration: The micro-controller inside each power
converter unit is programmed at the factory with a unique chip number.
In every other respect, each shared unit is identical and has the same
orderable part number.
On initial startup (or after the master is disabled or shuts down),
each unit determines the chip number of every other unit currently
connected to the shared serial bus formed by the SHARE(+) and
SHARE(-) pins. The unit with the highest chip number dynamically
reconfigures itself from slave to master. The rest of the units (that do
not have the highest chip number) become slaves.
The master unit then broadcasts its control state over the shared serial
bus on a cycle-by-cycle basis. The slave units interpret and implement
the control commands sent by the master, mirroring every action of
the master unit.
If the master is disabled or encounters a fault condition, all units will
immediately shut down, and if the master unit is unable to restart,
then the unit with the next highest chip number will become master. If
a slave unit is disabled or encounters a fault condition, all other units
continue to run, and the slave unit can restart seamlessly.
Automatic Interleaving: The slave units automatically lock
frequency with the master, and interleave the phase of their switching
transitions for improved EMI performance. To obtain the phase angle
relative to the master, each slave divides 360 degrees by the total
number of connected units, and multiples the result by its rank among
chip numbers of connected units.
ORing Diodes placed in series with the converter outputs must also
have a resistor smaller than 500 Ω placed in parallel. This resistor
keeps the output voltage of a temporarily disabled slave unit consistent
with the active master unit. If the output voltage of the slave unit
were allowed to totally discharge, and the slave unit tried to restart, it
would fail because the slave reproduces the duty cycle of the master
unit, which is running in steady state and cannot repeat an output
voltage soft-start.
Common-Mode Filtering must be a single primary side choke handling
the inputs from all the paralleled units, or multiple chokes placed on
the secondary side. This ensurses a solid Vin(-) plane is maintained
between units. Adding a common-mode choke at the output eliminates
the need for the 470 nH indcutor at the output of shared units when
Vout > 18 V. If an output common-mode choke is used, sense
connections must be made on the module-side of the choke.
Resonance Between Output Capacitors is Possible: When
multiple higher-voltage modules are paralleled, it is possible to
excite a series resonance between the output capacitors internal to
the module and the parasitic inductance of the module output pins.
This is especially likely at higher output voltages where the module
internal capacitance is relatively small. This problem is independent
of external output capacitance. For modules with an output voltage
greater than 18 V, to ensure that this resonant frequency is below the
switching frequency it is recommended to add a nominal 470 nH of
inductance, located close to the module, in series with each converter
output. There must be at least 10 μF of capacitance per converter,
located on the load-side of that inductor. The inductance could be from
the leakage inductance of a secondary-side common-mode choke; in
which case the output capacitor should be appropriately sized for the
chosen choke. When using an output common-mode choke, the Sense
lines must be connected on the module-side of the common-mode
choke (see Figure F).
RS-485 Physical Layer: The internal RS-485 transceiver includes
many advanced protection features for enhanced reliability:
• Current Limiting and Thermal Shutdown for
Driver Overload Protection
• IEC61000 ESD Protection to +/- 16.5 kV
• Hot Plug Circuitry – SHARE(+) and SHARE(-)
Outputs Remain Tri-State During Power-up/Power-down
Internal Schottky Diode Termination: Despite signaling at high
speed with fast edges, external termination resistors are not necessary.
Each receiver has four Schottky diodes built in, two for each line in the
differential pair. These diodes clamp any ringing caused by transmission
line reflections, preventing the voltage from going above about 5.5 V
or below about -0.5 V. Any subsequent ringing then inherently takes
place between 4.5 and 5.5 V or between -0.5 and 0.5 V. Since each
receiver on the bus contains a set of clamping diodes to clamp any
possible transmission line reflection, the bus does not necessarily need
to be routed as a daisy-chain.
Pins SHARE(+) and SHARE(-) are referenced to Vin(-), and therefore
should be routed as a differential pair near the Vin(-) plane for optimal
signal integrity. The maximum difference in voltage between Vin() pins of all units on the share-bus should be kept within 0.3 V to
prevent steady-state conduction of the termination diodes. Therefore,
the Vin(-) connections to each unit must be common, preferably
connected by a single copper plane.
Share Accuracy: Inside each converter micro-controller, the duty
cycle is generated digitally, making for excellent duty cycle matching
between connected units. Some small duty cycle mismatch is caused
by (well controlled) process variations in the MOSFET gate drivers.
However, the voltage difference induced by this duty cycle mismatch
appears across the impedance of the entire power converter, from
input to output, multiplied by two, since the differential current flows
out of one converter and into another. So, a small duty cycle mismatch
yields very small differential currents, which remain small even when
100 units are placed in parallel.
In other current-sharing schemes, it is common to have a currentsharing control loop in each unit. However, due to the limited bandwidth
of this loop, units do not necessarily share current on startup or during
transients before this loop has a chance to respond. In contrast, the
current-sharing scheme used in this product has no control dynamics:
control signals are transmitted fast enough that the slave units can
mirror the control state of the master unit on a cycle-by-cycle basis,
and the current simply shares properly, from the first switching cycle
to the last.
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Technical
Specification
IQ48xxxHZXxx
Application Section
Vin(+)
Vout(+)
Sense(+)
On/Off
≥1 nF
Elec.
Cap.
Share(+)
Trim
Load
Share(-)
Sense(-)
Vin(-)
Vout(-)
Vin(+)
Vout(+)
Sense(+)
On/Off
Electrolytic
Capacitor
Share(+)
Trim
Share(-)
Sense(-)
Vin(-)
Vout(-)
Up to 100 Units
Vin(+)
On/Off
Electrolytic
Capacitor
Vout(+)
Sense(+)
Share(+)
Trim
Share(-)
Sense(-)
Vin(-)
Vout(-)
Figure F: Typical Application Circuit for Paralleling of Full-Featured Units with an Output Common-Mode Choke. When using an output common-mode choke,
SENSE lines must be connected on the module-side of the choke. See Figure E for configuration with an input common-mode choke.
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Technical
Specification
IQ48xxxHZXxx
Standards & Qualification Testing
Parameter
Notes & Conditions
STANDARDS COMPLIANCE
UL 60950-1/R:2011-12
Basic Insulation
CAN/CSA-C22.2 No. 60950-1/A1:2011
EN 60950-1/A2:2013
Note: An external input fuse must always be used to meet these safety requirements. Contact SynQor for official safety certificates on new
releases or download from the SynQor website.
Parameter
# Units Test Conditions
QUALIFICATION TESTING
Life Test
32
95 % rated Vin and load, units at derating point, 1000 hours
Vibration
5
10-55 Hz sweep, 0.060 " total excursion, 1 min./sweep, 120 sweeps for 3 axis
Mechanical Shock
5
100 g minimum, 2 drops in x, y, and z axis
Temperature Cycling
10
-40 °C to 100 °C, unit temp. ramp 15 °C/min., 500 cycles
Power/Thermal Cycling
5
Toperating = min to max, Vin = min to max, full load, 100 cycles
Design Marginality
5
Tmin-10 °C to Tmax+10 °C, 5 °C steps, Vin = min to max, 0-105 % load
Humidity
5
85 °C, 95 % RH, 1000 hours, continuous Vin applied except 5 min/day
Solderability
15 pins
Altitude
2
MIL-STD-883, method 2003
70,000 feet (21 km), see Note
Note: A conductive cooling design is generally needed for high altitude applications because of naturally poor convective cooling at rare atmospheres.
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Technical
Specification
IQ48xxxHZXxx
Standard Mechanical Diagram
2.486 [63.14]
2.000 [50.80]
SEATING PLANE HEIGHT
0.512 0.005
[ 13.00 0.12]
PIN EXTENSION
0.163
[4.14]
0.700 [17.78]
5
6
7
8
9
TOP VIEW
0.004 [0.10]
1.900 2.386
[48.26] [60.60]
0.01
[0.3]
1.900
[48.26]
4
1
0.30
[7.6]
THRU HOLE STANDOFFS
SEE NOTE 1
(4 PLCS)
1)
Applied torque per M3 screw should not exceed 6in-lb. (0.7 Nm).
2)
Baseplate flatness tolerance is 0.004” (.10 mm) TIR for surface.
3)
5)
Pins 1-4, 6-8, and B are 0.040” (1.02mm) diameter, with 0.080”
(2.03mm) diameter standoff shoulders.
Pins 5 and 9 are 0.080” (2.03 mm) diameter with 0.125”
(3.18 mm) diameter standoff shoulders.
All Pins: Material - Copper Alloy; Finish - Matte Tin over Nickel plate
6)
Undimensioned components are shown for visual reference only.
7)
Weight: 4.8 oz (136 g)
8)
All dimensions in inches (mm).
Tolerances:
x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
unless otherwise noted.
Workmanship: Meets or exceeds IPC-A-610C Class II
9)
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2
1
0.400
0.800
1.000
1.400
[10.16]
[20.32]
[25.40]
[35.56]
PIN DESIGNATIONS
Pin
1
Name
Vin(+)
Function
Positive input voltage
2
ON/OFF
TTL input to turn converter on and off,
referenced to Vin(–), with internal pull up.
B
SHARE(+)
3
4
5
6
7
8
9
SHARE(-)
Vin(–)
Vout(–)
SENSE(–)
TRIM
SENSE(+)
Vout(+)
Active current share differential pair
(See note 4)
Negative input voltage
Negative output voltage
Negative remote sense (See note 1)
Output voltage trim (See note 2)
Positive remote sense (See note 3)
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.
Full-Featured option only. Pin 3 and Pin B not populated on standard model.
4)
Product # IQ48xxxHZXxx
B
BOTTOMSIDE CLEARANCE
0.027 0.010
[ 0.69 0. 25]
NOTES
4)
3
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Page 25
Technical
Specification
IQ48xxxHZXxx
Flanged Mechanical Diagram
3.150 [80.01]
0.700 [17.78]
2.950 [74.93]
2.486 [63.14]
SEATING PLANE HEIGHT
0.495 0.025
[ 12.57 0.63]
PIN EXTENSION
0.180 [4.57]
5
TOP VIEW
7
6
8
9
0.010 [0.25]
1.900
[48.26]
1.300 1.866 2.386
[33.02] [47.40] [60.60]
0.31
[7.9]
4
3
B
2
1
1
0.775 0.020
[19.69 0.50]
.130 [3.30]
SEE NOTE 1
(6 PLCS)
FLANGE THICKNESS
0.125
[3.18]
BOTTOMSIDE CLEARANCE
0.005 0.010
[ 0.13 0. 25]
0.400 [10.16]
0.800 [20.32]
1.000 [25.40]
1.400 [35.56]
NOTES
1)
2)
3)
Applied torque per M3 or 4-40 screw should not exceed 6in-lb. (0.7
Nm).
Baseplate flatness tolerance is 0.01” (.25 mm) TIR for surface.
5)
Pins 1-4, 6-8 and B are 0.040” (1.02mm) diameter, with 0.080”
(2.03mm) diameter standoff shoulders.
Pins 5 and 9 are 0.080” (2.03 mm) diameter with 0.125”
(3.18 mm) diameter standoff shoulders.
All Pins: Material - Copper Alloy; Finish - Matte Tin over Nickel plate
6)
Undimensioned components are shown for visual reference only.
7)
Weight: 5.0oz (142g)
4)
Name
Vin(+)
Function
Positive input voltage
2
ON/OFF
TTL input to turn converter on and off,
referenced to Vin(–), with internal pull up.
B
SHARE(+)
3
4
5
6
7
8
9
SHARE(-)
Vin(–)
Vout(–)
SENSE(–)
TRIM
SENSE(+)
Vout(+)
9)
All dimensions in inches (mm).
Tolerances:
x.xx +/-0.02 in. (x.x +/-0.5mm)
x.xxx +/-0.010 in. (x.xx +/-0.25mm)
unless otherwise noted.
10) Workmanship: Meets or exceeds IPC-A-610C Class II
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Active current share differential pair
(See note 4)
Negative input voltage
Negative output voltage
Negative remote sense (See note 1)
Output voltage trim (See note 2)
Positive remote sense (See note 3)
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.
Full-Featured option only. Pin 3 and Pin B not populated on standard model.
4)
Product # IQ48xxxHZXxx
PIN DESIGNATIONS
Pin
1
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Doc.# 005-0005675 Rev. G
11/23/15
Page 26
Technical
Specification
IQ48xxxHZXxx
PART NUMBERING SYSTEM
ORDERING INFORMATION
The part numbering system for SynQor’s dc-dc converters follows the format
shown in the example below.
The tables below show the valid model numbers and ordering options for
converters in this product family. When ordering SynQor converters, please
ensure that you use the complete 15 character part number consisting of
the 12 character base part number and the additional characters for options.
Add “-G” to the model number for 6/6 RoHS compliance.
IQ 4 8 5 0 0 H Z C 1 2 N R F - G
Model Number
6/6 RoHS
Options
(see
Ordering Information)
Output Current
Thermal Design
Performance Level
Package Size
IQ48050HZw60xyz
IQ48120HZw50xyz
IQ48150HZw40xyz
IQ48240HZw25xyz
IQ48280HZw22xyz
IQ48400HZw15xyz
IQ48500HZw12xyz
Input
Voltage
34-75 V
34-75 V
34-75 V
34-75 V
34-75 V
34-75 V
34-75 V
Output
Voltage
5.0 V
12 V
15 V
24 V
28 V
40 V
50 V
Max Output
Current
60 A
50 A
40 A
25 A
21.5 A
15 A
12 A
Output Voltage
Input Voltage
Product Family
The first 12 characters comprise the base part number and the last 3
characters indicate available options. The “-G” suffix indicates 6/6 RoHS
compliance.
Application Notes
A variety of application notes and technical white papers can be downloaded
in pdf format from our website.
The following options must be included in place of the w x y z spaces in the
model numbers listed above.
Options Description
Enable
Thermal Design
Pin Style Feature Set
Logic
C - Encased
D - Encased with Non-Threaded
N - Negative
Baseplate
V - Encased with Flanged Baseplate
R - 0.180"
A - Standard
F - Full-Feature
RoHS Compliance: The EU led RoHS (Restriction of Hazardous
Substances) Directive bans the use of Lead, Cadmium, Hexavalent
Chromium, Mercury, Polybrominated Biphenyls (PBB), and Polybrominated
Diphenyl Ether (PBDE) in Electrical and Electronic Equipment. This SynQor
product is 6/6 RoHS compliant. For more information please refer to
SynQor’s RoHS addendum available at our RoHS Compliance / Lead
Free Initiative web page or e-mail us at [email protected]
Not all combinations make valid part numbers, please contact SynQor for
availability. See the Product Summary web page for more options.
Contact SynQor for further information and to order:
PATENTS
Phone:
Toll Free:
Fax:
E-mail:
Web:
Address:
Product # IQ48xxxHZXxx
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
SynQor holds numerous U.S. patents, one or more of which apply to most of its power converter
products. Any that apply to the product(s) listed in this document are identified by markings on
the product(s) or on internal components of the product(s) in accordance with U.S. patent laws.
SynQor’s patents include the following:
5,999,417
6,222,742
6,545,890
6,594,159
6,731,520
6,894,468
6,896,526
6,927,987
7,050,309
7,072,190
7,085,146
7,119,524
7,269,034
7,272,021
7,272,023
7,558,083
7,564,702
7,765,687
7,787,261
8,023,290
8,149,597
8,493,751
8,644,027
9,143,042
Warranty
SynQor offers a two (2) year limited warranty. Complete warranty information is
listed on our website or is available upon request from SynQor.
www.synqor.com
Doc.# 005-0005675 Rev. G
11/23/15
Page 27
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