DC-DC Converters 50W Output 5V XD50-24DB5-POC
Features:
Wide input range: 18‐36 V
Output power: 50W
High conversion efficiency: 90%
Line regulation to: ±1%
Load regulation to: ±1%
Input under‐voltage lock‐out
Output over‐current protection
Hiccup mode short circuit protection
Output over‐voltage protection
Enable (On/Off) Control
Isolation Voltage(Input to output): 1500Vdc
Product Overview:
These DC‐DC converter modules use advanced power
processing, control and packaging technologies to
provide the performance, flexibility, reliability and cost
effectiveness of a mature power component. High
frequency Active Clamp switching provides high power
density with low noise and high efficiency.
1. Electric Characteristics
1.1 Absolute Maximum Ratings
|
Parameter
|
Min
|
Typ
|
Max
|
Units
|
Notes
|
|
Input Voltage
|
|
|
40
|
Vdc
|
Continuous, non-operating
|
|
|
|
36
|
Vdc
|
Continuous, operating
|
|
|
|
40
|
Vdc
|
Impulse voltage,<100ms,operating
|
|
Isolation voltage
|
|
|
2000
|
Vdc
|
Input to output
|
|
Operating Temperature
|
-40
|
|
100
|
℃
|
In view of PCB Temperature
|
|
Storage Temperature
|
-55
|
|
115
|
℃
|
|
|
Enable to -Vin Voltage
|
-2
|
|
10
|
Vdc
|
|
1.2 Input Characteristics
|
Parameter
|
Min
|
Typ
|
Max
|
Units
|
Notes
|
|
Operating input voltage range
|
18
|
24
|
36
|
Vdc
|
|
|
Input Under-Voltage Lockout
|
17
|
17.5
|
18
|
Vdc
|
Recovery point
|
|
16
|
16.5
|
17
|
Vdc
|
Protect point
|
|
Maximum Input Current
|
|
|
3.4
|
A
|
Vin min,output full load
|
|
Efficiency
|
|
89
|
|
%
|
Rated input;rated load
|
|
Dissipation,Standby
|
|
|
5
|
W
|
No load
|
1.3 Output Characteristics
|
Parameter
|
Min
|
Typ
|
Max
|
Units
|
Notes
|
|
Output Voltage Set point
|
+4.95
|
+5.00
|
+5.05
|
Vdc
|
+Vout
|
Rated input voltage,Small load
|
|
-4.90
|
-5.00
|
-5.10
|
Vdc
|
-Vout
|
|
Output Voltage Range
|
+4.90
|
+5.00
|
+5.10
|
Vdc
|
+Vout
|
|
|
-4.70
|
-5.00
|
-5.30
|
Vdc
|
-Vout
|
|
|
Output Current Range
|
0.2
|
|
5
|
A
|
+Vout
|
|
|
0.2
|
|
5
|
A
|
-Vout
|
|
|
Voltage Regulation
|
|
|
±1
|
%
|
+Vout
|
|
|
|
|
±4
|
%
|
-Vout
|
|
|
Load Regulation
|
|
|
±1
|
%
|
+Vout
|
|
|
|
|
±4
|
%
|
-Vout
|
|
|
Output over-current protection
|
|
7.0
|
|
A
|
+Vout
|
90% of the rated output voltage
|
|
|
7.0
|
|
A
|
-Vout
|
|
Output Short Circui Current
|
0
|
|
20
|
A
|
+Vout
|
|
|
0
|
|
20
|
A
|
-Vout
|
|
|
RMS
|
|
15
|
|
mV
|
+Vout
|
Nominal input; full load; 20MHz,bandwidth
|
|
|
15
|
|
mV
|
-Vout
|
|
peak-to-peak
|
|
50
|
|
mV
|
+Vout
|
|
|
50
|
|
mV
|
-Vout
|
|
Capacitive load from themachine
|
|
|
4000
|
μF
|
+Vout
|
|
|
|
|
4000
|
μF
|
-Vout
|
|
1.4 Dynamic Response Characteristics
|
Parameter
|
Min
|
Typ
|
Max
|
Units
|
Notes
|
|
Change in Output Current
|
|
200
|
|
mV
|
+Vout
|
Load change50%～75%～50% Iout
max,di/dt= 0.1A/μS
|
|
|
200
|
|
mV
|
-Vout
|
|
|
200
|
|
mV
|
+Vout
|
Load change50%～75%～50% Iout
max,di/dt= 0.5A/μS
|
|
|
200
|
|
mV
|
-Vout
|
|
Dynamic recovery time
|
|
|
300
|
uS
|
|
|
|
Turn-on Time
|
|
5
|
|
mS
|
|
|
|
Turn-off overshoot
|
|
|
5
|
%
|
|
|
1.5 Functional Characteristics
|
Parameter
|
Min
|
Typ
|
Max
|
Units
|
Notes
|
|
Switching Frequency
|
180
|
200
|
230
|
KHz
|
|
|
Enable Current
|
|
|
1
|
mA
|
|
|
Enable (ON/OFF)
|
1
|
|
15
|
Vdc
|
ON-control, Logic high or floating
|
|
-0.5
|
|
0.3
|
Vdc
|
OFF-control, Logic low
|
|
Over-Load Protection
|
110
|
|
130
|
%
|
|
|
Short-Circuit Protection)
|
|
|
65
|
mΩ
|
Hiccup mode,since the recovery
|
1.6 Isolation Characteristics
|
Parameter
|
Min
|
Typ
|
Max
|
Units
|
Notes
|
|
Isolation Voltage
|
1500
|
|
|
Vdc
|
Input to Output
|
|
1500
|
|
|
Vdc
|
In to base
|
|
500
|
|
|
Vdc
|
Out to base
|
|
Isolation Resistance
|
10
|
|
|
MΩ
|
At 500VDC to test it when atmospheric
pressure and R.H. is 90%
|
|
Isolation Capacitance
|
|
1000
|
|
pF
|
|
2.General Characteristics
|
Parameter
|
Min
|
Typ
|
Max
|
Units
|
Notes
|
|
Weight
|
|
25
|
|
g
|
|
|
MTBF
|
1
|
|
|
MHrs
|
TR-NWT-000332; 80% load,300LFM,
40℃ Ta
|
3.Environmental Characteristics
|
Parameter
|
Min
|
Typ
|
Max
|
Units
|
Notes
|
|
Operating Temperature
|
-40
|
|
100
|
℃
|
Extended, base PCB temperature
|
|
Storage Temperature
|
-55
|
|
105
|
℃
|
Ambient
|
|
Temperature Coefficient
|
|
|
±0.02
|
%/℃
|
|
|
Humidity
|
20
|
|
95
|
%R.H.
|
Humidity
|
4.Standards Compliance
|
Parameter
|
Notes
|
|
MIL-STD-704
|
|
|
MIL-STD-1399
|
|
|
MIL-STD-810
|
|
|
UL/cUL60950
|
|
|
EN60950
|
|
|
GB4943
|
|
|
IEC 61000-4-2
|
|
5. WORK WAVE
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.
Figure 3: Maximum output power derating curves vs.
ambient air temperature for airflow rates of 0 LFM
through 400 LFM with air flowing from pin 1 to pin 3
(nominal input voltage).
Figure 4: Output voltage ripple at nominal input
voltage and rated load current (20 mV/div). Load
capacitance: 0.1μF ceramic capacitor and 10μF
tantalum capacitor. Bandwidth: 20 MHz.
Figure 5: Thermal plot of converter at full load
current(50W) with 25°C air flowing at the rate
of 200 LFM. Air is flowing across the converter
from pin 3 to pin 1(nominal input voltage).
Figure 6: Thermal plot of converter at full load
current(50W) with 25°C air flowing at the rate
of 200 LFM. Air is flowing across the converter
from input to output (nominal input voltage).
Figure 7: Turn-on transient at full load (resistive
load) (10ms/div).Input voltage pre-applied.
Ch1:Vout1(5V/div);Ch2:Vout2(5V/div)；
Ch3:ON/OFF Input (1V/div).
Figure 8: Shut-down fall time at full load (10 ms/div).
Ch1:Vout1(5V/div);Ch2:Vout2(5V/div)；
Ch3:ON/OFF Input (1V/div).
Figure 9: Output voltage response to step-change in
load current (50%-75%-50% of Iout(max); dI/dt =
2.5A/μs). Load cap: 10μF, 100mΩ ESR tantalum
capacitor and 0.1μF ceramic capacitor. Ch 1:
Vout1(200mV/div).
Figure 10: Output voltage response to step-change
in load current (50%-75%-50% of Iout(max): dI/dt
= 2.5A/μs). Load cap: 10μF, 30 mΩ ESR tantalum
capacitor and 1μF ceramic cap.
Ch 2: Vout2(200mV/div).
6.Physical Information
6.1 Mechanical Outline
Notes:
1. All pins are (1.02mm) dia. with . (2.2mm) dia. standoff shoulders.
2.Tolerances: x.x ±0.5mm, x.xx ±0.25mm.
6.2 Pin Designations
|
Pin No.
|
Name
|
Function
|
|
1
|
Enable
|
TTL input to turn converter on and off, referenced to Vin(-), with internal pull up.
|
|
2
|
Vin(-)
|
Negative input voltage
|
|
3
|
Vin(+)
|
Positive input voltage
|
|
4
|
Vout(+)
|
Positive output voltage
|
|
5
|
Com
|
Ground
|
|
6
|
Trim
|
Negative output voltage
|
Your message must be between 20-3,000 characters!
