CF24xxxQTXxx
18-36V
50V
5.0-24V 120W
Outputs
Technical
Specification
Quarter-brick
DC-DC Converter
4250Vdc
Continous Input Transient Input
Max Power REINFORCED Insulation
Rated for CF Patient Contact and Defibrillation Proof
The CFQor series of Quarter-Brick DC-DC converters
is designed for those medical applications that require
isolation and leakage current levels that comply
with IEC60601-1 for CF patient contact and are also
defibrillation proof. They are high efficiency, fixed
switching frequency, encased converters based on
SynQor's well proven and reliable industrial grade
products.
Operational Features
•
•
•
•
•
High efficiency, 93% at full rated load current
Delivers full power with minimal derating - no heatsink required
Operating input voltage range: 18-36V continuous; 50V transient
Fixed frequency switching provides predictable EMI
No minimum load requirement
F
18
24
-3
2
6V
40
Q
IN
24
TC
V
0
Mechanical Features
• Industry standard quarter-brick pin-out configuration
• Size: 1.54" x 2.39" x 0.50", (39.0 x 60.6 x 12.7mm)
• Total weight: 3 oz (85 g)
•
•
•
•
•
Protection Features
Input under-voltage lockout
Output current limit and short circuit protection
Active back bias limit
Output over-voltage protection
Thermal shutdown
Control Features
• On/Off control referenced to input side
• Remote sense for the output voltage
• Output voltage trim range of -20%, +10%
Contents
Family Electrical Characteristics (all output voltages) . . . . . . . . . . . . . .2
Family Electrical Charts (all output voltages) . . . . . . . . . . . . . . . . . . . .3
Electrical Characteristics (5.0 Vout) & Figures . . . . . . . . . . . . . . . . . 4-5
Electrical Characteristics (12.0 Vout) & Figures . . . . . . . . . . . . . . . . 6-7
Electrical Characteristics (15.0 Vout) & Figures . . . . . . . . . . . . . . . . 8-9
Electrical Characteristics (24.0 Vout) & Figures . . . . . . . . . . . . . . 10-11
Application Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-15
Standards & Qualifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Encased Mechanical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Flanged Mechanical Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Safety Features
Reinforced Insulation
• 4250V, 100 MΩ input-to-output
• UL 60601-1:2003
• CAN.CSA 22.2 No. 601.1-M90
• EN 60601-1/A2:1995
• IEC 60601-1/A2:1995
• CF Patient Contact
• Defibrillation Proof
• RoHS compliant (see last page)
Product # CF24xxxQTXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005449 Rev. C
C
O
UT
@
RS
5.
-G
0A
5N
05/11/10
Page 1
CF24xxxQTXxx
CF24 Family Electrical Characteristics (all output voltages)
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Non-Operating
Operating
Operating Transient Protection
Isolation Voltage
Input to Output
Input to Base-Plate
Output to Base-Plate
Operating Temperature
-40
Storage Temperature
-55
Voltage at ON/OFF input pin
-2
INPUT CHARACTERISTICS
Operating Input Voltage Range
18
Input Under-Voltage Lockout
Turn-On Voltage Threshold
16.6
Turn-Off Voltage Threshold
15
Lockout Voltage Hysteresis
Recommended External Input Capacitance
Input Filter Component Values (L\C)
Recommended Input Fuse
DYNAMIC CHARACTERISTICS
Turn-On Transient
Turn-On Time
Start-Up Inhibit Time
200
Output Voltage Overshoot
ISOLATION CHARACTERISTICS
Isolation Voltage (dielectric strength)
Isolation Resistance
Isolation Capacitance (input / baseplate to output)
Output Leakage Single Fault
Difibrillation Pulse (input / baseplate earthed)
TEMPERATURE LIMITS FOR POWER DERATING CURVES
Semiconductor Junction Temperature
Board Temperature
Transformer Temperature
Maximum Baseplate Temperature, Tb
FEATURE CHARACTERISTICS
Switching Frequency
230
ON/OFF Control
Off-State Voltage
2.4
On-State Voltage
-2
ON/OFF Control
Pull-Up Voltage
Pull-Up Resistance
Over-Temperature Shutdown OTP Trip Point
Over-Temperature Shutdown Restart Hysteresis
RELIABILITY CHARACTERISTICS
Calculated MTBF (Telcordia) TR-NWT-000332
Calculated MTBF (MIL-217) MIL-HDBK-217F
Field Demonstrated MTBF
Technical
Specification
Ta = 25 °C, airflow rate = 300 LFM, Vin = 24V dc 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.
60
36
50
4250
4250
4250
100
125
18
Units Notes & Conditions
V
V
V
V dc
V dc
V dc
°C
°C
V
V
V
V
V
µF
µH\µF
A
Continuous
Continuous
1s
Reinforced insulation
Baseplate temperature
24
17.0
15.4
1.6
220
1.0\6.6
36
17.4
15.8
50V transient for 1 s
20
Typical ESR 0.1-0.2 Ω
Internal values; see Figure D
Fast acting external fuse recommended
9
230
0
4250
100
270
27
5
250
ms
ms
%
V dc
MΩ
pF
µA
kV
Full load, Vout=90% nom.
-40 °C to +125 °C; Figure E
Maximum Output Capacitance
See Absolute Maximum Ratings
264Vac 60Hz Backdrive
Fig. 51 60601-1 2nd Edition
Package rated to 150 °C
UL rated max operating temp 130 °C
125
125
125
100
250
270
18
0.8
5
50
125
10
2.5
2
°C
°C
°C
°C
kHz
V
Regulation and Isolation stages
Application notes Figures A & B
V
kΩ
°C
°C
Average PCB Temperature
106 Hrs. 80% load, 200LFM, 40 °C Ta
106 Hrs. 80% load, 200LFM, 40 °C Ta
106 Hrs. See the SynQor website for details
Product # CF24xxxQTXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005449 Rev. C
05/11/10
Page 2
CF24xxxQTXxx
Family Electrical Charts (all output voltages)
Nominal Vout
120
Technical
Specification
100
Output Voltage (%)
80
60
40
Vin min
Vin nom
Vin max
20
0
0
10
20
30
40
50
Load Current (%)
60
70
80
90
100 110 120 130 140 150
Common Figure 1: Typical startup waveform. Input voltage pre-applied, ON/
OFF Pin on Ch 2.
100,000.0
Common Figure 2: Output voltage vs. load current showing typical current limit
curves and converter shutdown points.
100,000.0
Trim Resistance (kOhms)
Trim Resistance (kOhms)
10,000.0
5V
12 V
10,000.0
15 V
24 V
1,000.0
1,000.0
100.0
10.0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Increase in Vout (%)
100.0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Increase in Vout (%)
Common Figure 3: Trim graph for trim-up 5 and 12 V outputs.
Common Figure 4: Trim graph for trim-up 15 and 24 V outputs.
10,000.0
All voltages
Trim Resistance (kOhms)
1,000.0
100.0
10.0
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20
Decrease in Vout (%)
Common Figure 5: Trim graph for trim down.
Product # CF24xxxQTXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005449 Rev. C
05/11/10
Page 3
Technical Specification
CF24050QTC24 Electrical Characteristics (5.0 Vout)
Input:18-36V
Output:5V
Current:24A
Part No.:CF24050QTC24
Ta = 25 °C, airflow rate = 300 LFM, Vin = 24V dc 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
9.8
A
Vin min; trim up; in current limit
No-Load Input Current
100
130
mA
Disabled Input Current
1.5
3.0
mA
Response to Input Transient
0.16
V
See Figure 6
Input Terminal Ripple Current
330
mA
RMS
Recommended Input Fuse
20
A
Fast acting external fuse recommended
OUTPUT CHARACTERISTICS
Output Voltage Set Point
4.95
5
5.05
V
Output Voltage Regulation
Over Line
±0.1
±0.3
%
Over Load
±0.1
±0.3
%
Over Temperature
-75
75
mV
Total Output Voltage Range
4.875
5.125
V
Over sample, line, load, temperature & life
Output Voltage Ripple and Noise
20 MHz bandwidth; see Note 1
Peak-to-Peak
60
120
mV
Full load
RMS
10
20
mV
Full load
A
Operating Output Current Range
0
24
Subject to thermal derating
Output DC Current-Limit Inception
26.4
28.8
31.2
A
Output voltage 10% Low
Output DC Current-Limit Shutdown Voltage
2.4
V
Back-Drive Current Limit while Enabled
0.55
A
Differential negative current drawn from output
Back-Drive Current Limit while Disabled
0
16
50
mA
Differential negative current drawn from output
Maximum Output Capacitance
8,000
µF
Vout nominal at full load (resistive load)
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
170
mV
50% to 75% to 50% Iout max
Settling Time
100
µs
To within 1% Vout nom
Output Voltage Trim Range
-20
10
%
Across Pins 8&4; Common Figures 3-5; see Note 2
Output Voltage Remote Sense Range
10
%
Across Pins 8&4
Output Over-Voltage Protection
117
122
127
%
Over full temp range
Load Current Scale Factor
250
See Output Load Current app. note on our web
EFFICIENCY
100% Load
89
%
See Figure 1 for efficiency curve
50% Load
92
%
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: support@synqor.com)
Note 2: Trim-up range is limited below 10% at low line and full load.
Product # CF24xxxQTXxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005449 Rev. C
05/11/10
Page 4
Technical Specification
95
90
18
16
14
Input:18-36V
Output:5V
Current:24A
Part No.:CF24050QTC24
Power Dissipation (W)
18 Vin
85
Efficiency (%)
12
10
8
6
4
2
0
18 Vin
24 Vin
36 Vin
0
5
10
15
20
80
75
70
65
60
0
5
24 Vin
36 Vin
10
15
20
Load Current (A)
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
20
Iout (A)
15
Iout (A)
400
300
200
100
LFM (2.0
LFM (1.5
LFM (1.0
LFM (0.5
m/s)
m/s)
m/s)
m/s)
15
10
10
5
5
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
0
25
40
55
70
85
0
0
25
40
55
70
85
Ambient Air Temperature (°C)
Ambient Air Temperature (°C)
Figure 3: Encased converter (without heatsink) max. output power derating vs.
ambient air temperature for airflow rates of 100 LFM through 400 LFM. Air
flows across the converter from input to output (nominal input voltage).
Figure 4: Encased converter (with 1/2” heatsink) max. output power derating
vs. ambient air temperature for 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 = 0.1A/µs). Load cap: 15µF tantalum cap and 1µF
ceramic cap. Ch 1: Vout, Ch 2: Iout.
Product # CF24xxxQTXxx
Phone 1-888-567-9596
Figure 6: Output voltage response to step-change in input voltage (nominal to
maximum), at full load current. Load cap: 15µF tantalum capacitor and 1uF
ceramic cap. Ch 1: Vout, Ch 2: Vin.
Doc.# 005-0005449 Rev. C
05/11/10
Page 5
www.synqor.com
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