Data Sheet

ManualsBrandsTDK-Lambda ManualsActive ComponentsTDK-Lambda 500W DIN Rail DC-DC Converters DC/DC converter 12 V 20 A 500 W No. of outputs: 2 x

DDA Series

250-500W, Wide Range Input,

Non-isolated, DIN Rail DC-DC Converters

DDA Series

Features Beneﬁ ts

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 efﬁ cient DDA series accepts a very wide DC input and has a wide output adjustment range, with a choice of single or dual

output models.

• 250W Single Output, 325W and 500W Dual Output Power Levels

• High Efﬁ ciency up to 95%

• Wide Input Range - 9 up to 53V

• Wide 3.3 to 24V Output Adjustment

• Narrow 36.5mm Width

• Convection Cooled

• High Power Density

• Less Waste Heat

• One Part For Multiple Applications

• Accomodates Non-Standard Voltages

• More Space Available For Other DIN Rail Devices

• Easy To Cool In End System

Speciﬁ cation

Model(s) DDA250 DDA500 DDA325

Input

Input Voltage range Vdc 9 to 53V (Turn on at 10V or greater) 9 to 40V (Turn on at 10V or greater)

Input Current (Max.) A 20A 40A 35A

Efﬁ ciency - 92 - 95% 88 - 94%

Conducted & Radiated EMI - EN55032 Class A

Immunity - EN55024

Safety Agency Certiﬁ cations - IEC/UL/CSA/EN 62368-1, CE Mark (LVD, EMC, RoHS)

Output

Switching Frequency kHz 400

Line Regulation mV 25mV 20mV

Load Regulation mV 150mV 100mV

External Load Capacitance uF 0 - 1000uF each output voltage

Output Ripple & Noise (pk-pk) mV 60mV 50mV each output voltage

Overcurrent Protection Threshold A 28A 22 / 15A

Overvoltage Protection V None

Remote On / Off - 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

Power Good - Open collector(s), low on fail

Indicators - A green LED indicates the output is OK

Parallel Operation - Not possible

Series operation - Not possible

https://product.tdk.com/en/power/dda

www.emea.lambda.tdk.com/dda

Model Selector

Consult factory for other output voltage combinations.

Maximum Maximim

Part Number Nominal Adjust Range Nominal Adjust Range Output Output

(V)

(1)

(V) (V)

(1)

(V) Current Power

DDA250N-S1PX-12-001 12V 3.3 to 15V NA NA 20A / NA 250W / NA

DDA500N-D2PP-1205-001 12V 3.3 to 15V 5V 3.3 to 15V 20A / 20A 250W / 250W

DDA325N-D2PN-1212-001 12V 3.3 to 24V -12V -3.3 to -24V 14A / 8A 250W / 75W

Output Voltage 1 Output Voltage 2

Summary of content (4 pages)

PAGE 1
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.
PAGE 2
Speciﬁcation Model(s) Environmental Operating Temperature Storage Temperature Cooling Other MTBF - Telcordia SR-332 Weight Size (WxHxD) Size (WxHxD) Case Material DIN Rail type Warranty DDA250 DDA500 DDA325 °C °C - -40 to 100 (see full technical datasheet on website) -55 to 125 Convection or forced air g mm In yrs >5MHrs; 100% Load, Ta = 40°C 450 36.5 x 123.4 x 115 1.44 x 4.86 x 4.53 Metal Suitable for mounting on DIN Rail TS-35/7.
PAGE 3
Mechanical Speciﬁcation Recommended Hole Pattern (top view) Front Panel Connectors Signal Collector Pinout # Function # Function PIN Function PIN Function 1 2 3 4 Vo2 (-) Vo2 (+) Vo1 (-) Vo1 (+) 5 6 7 8 On/Off Vo2 On/Off Vo1 VIN (-) VIN (+) 1 2 3 4 Vo1 SENSE (+) Vo2 SENSE (+) N/C Signal GND 5 6 7 8 Vo1 PWR GOOD Vo2 PWR GOOD CC Ref (N/C) Signal GND DDA Series 3
PAGE 4
For Additional Information, please visit https://product.tdk.com/en/power/ DDA Jun 30th, 2020 v2.