DDA Series
https://product.tdk.com/en/power/dda
www.emea.lambda.tdk.com/dda
250-500W, Wide Range Input,
Non-isolated, DIN Rail DC-DC Converters
The DDA DIN rail mount, non-isolated step-down converters are ideal for creating additional high current output voltages from a single output 12V, 24V or 48V
AC-DC power supply. The highly efficient DDA series accepts a very wide DC input and has a wide output adjustment range, with a choice of single or dual
output models.
Features
Benefits
• 250W Single Output, 325W and 500W Dual Output Power Levels • High Power Density
• High Efficiency up to 95%
• Wide Input Range - 9 up to 53V
• Wide 3.3 to 24V Output Adjustment
• Narrow 36.5mm Width
• Less Waste Heat
• One Part For Multiple Applications
• Accommodates Non-Standard Voltages
• More Space Available For Other DIN Rail Devices
• Easy To Cool In End System
• Convection Cooled
Model Selector
Output Voltage 1
Output Voltage 2
Maximum
Output
Current
Maximim
Output
Power
Part Number
Nominal
Adjust Range
Nominal
Adjust Range
(V)(1)
(V)
(V)(1)
(V)
DDA250N-S1PX-12-001
DDA500N-D2PP-1205-001
DDA325N-D2PN-1212-001
12V
12V
12V
3.3 to 15V
3.3 to 15V
3.3 to 24V
NA
5V
-12V
NA
3.3 to 15V
-3.3 to -24V
20A / NA
20A / 20A
14A / 8A
250W / NA
250W / 250W
250W / 75W
Consult factory for other output voltage combinations.
Specification
Model(s)
DDA250
DDA500
DDA325
Input
Input Voltage range
Input Current (Max.)
Efficiency
Vdc
9 to 53V (Turn on at 10V or greater)
9 to 40V (Turn on at 10V or greater)
A
-
20A
40A
35A
92 - 95%
88 - 94%
Conducted & Radiated EMI
Immunity
-
EN55032 Class A
EN55024
-
Safety Certifications and Markings
Output
-
IEC/UL/CSA/EN 62368-1, CE Mark and UKCA Mark
Switching Frequency
Line Regulation
kHz
mV
mV
uF
mV
A
400
25mV
20mV
Load Regulation
150mV
100mV
External Load Capacitance
Output Ripple & Noise (pk-pk)
Overcurrent Protection Threshold
Overvoltage Protection
Remote On / Off
0 - 1000uF each output voltage
60mV
28A
50mV each output voltage
22 / 15A
V
None
-
To enable the output(s), connect the on/off pins to the GND pin(s) on the top connector
Remote Sense
-
(+) Sense, compensating up to 5% of output voltage
Open collector(s), low on fail
A green LED indicates the output is OK
Not possible
Power Good
-
Indicators
-
Parallel Operation
Series operation
-
-
Not possible
1
DDA Series