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January 15, 2024

75 Watt 5V 15A Output Fully Isolated DC/DC Converter half-brick with 48VDC (18V-75V) input

5 volt 15 amp brick module dc-dc converter48V in 5V out mounted on circuit board
Optional circuit board available below.
Click here for a larger view of the DC/DC converter drawing
Pin Single Output
1 - DC In
2 Case
3 on/off
4 +DC In
5 - Ground
6 - sense
7 Trim
8 + Sense
9 +5V out
DMW75S-05 DC to DC 75 watt converter with a super-wide input voltage range, 18VDC-75VDC. This makes it useful for systems having source voltage of 24VDC, 36VDC, 48VDC, and 60VDC.

Quantity 1-9 10-99 100-499 500-999 1000+
Price DMW75S-05
48V input 5V output brick module
Over 1000 pieces in stock
$65.00 $61.00 $55.00 $49.90
Price DMW-board
PC board for mounting 48V to 5V converter
Ready-made PC board for mounting the DMW7S-05
Price DMW-75S-05 complete
Consists of the DMW72S-05 mounted on circuit board DMW-board including connectors
complete board and DC converter
$74.00 $69.00    
Isolated DC converter brick module.
DMW75S-05 48V to 5V, 75W DC-DC converter
XP ICH7548WS05
Power One QB075YG-A
Cincon CHB75-24S05
Cincon CHB75-48S05
Cincon CHB75W48S05
Datel UCP-5/12-D48
Datel UCP-5/15-D48
Datel UCP-5/12-D24
Murata UCH-5/10-D48N
Murata UCH-5/20-D24N (limited to 15 Amps output)
Murata UCH-5/30-D48N (limited to 15 Amps output)
Input Range +18VDC to +75VDC
Output Voltage 5VDC
Output Current 0 to 15 Amps
Output Power 75 Watts
Voltage set point accuracy ±1%
Line Regulation ±1%
Load Regulation ±1%
Ripple and noise 75mVp-p
Efficiency 85% typical
Remote On-Off terminal polarity VIN Negative (turns off when pin 3 is shorted to pin 1)
Dynamic Regulation 50% load step 4%
  Settling time 100 µSec
Output voltage trim range ±10%
Short circuit protection Continuous
Over current protection Continuous, 110-150% threshold
Over voltage protection Continuous, 110-140% trip range
Turn-on time < 10 mS
Switching Frequency 400 kHz
Temperature Coefficient ±0.02% /°C
Temperature range -40°C to 100°C operating (baseplate)
  -55°C to +125°C storage
Size 2.3x2.4x0.5 inches, 58x62x13 mm, standard half-brick size
Weight 2.4 oz, 68 grams
Humidity <95%, non condensing
Vibration 5G, 3 axis, 5 minutes each
Agency Approval UL component (RU mark), CE

Application Notes:

Remote sense and trim functions
To use the remote sense, connect the "Sense +" and "Sense -" pins to wires that go to the load and don't carry any current. This lets the DC converter stabilize the voltage at the load, compensating for voltage loss in the wires that carry current.
In other words, without using the "Sense" terminals the voltage will be stabilized at the converter output terminals. As the current flows through wires, connectors, and contacts then resistance of these elements will cause a voltage drop due to Ohm's law. If you run an extra set of wires from the sense terminals to the load that don't carry current, then these can be used to sense the actual voltage at the load and the converter will boost its voltage to compensate for this voltage drop (over a limited range, ±0.5 Volts.)

The sense terminals can also be used to trim the voltage with fixed resistors or a pot as follows:
How to arrange the trimpot.

Schematic of how to trim the output voltage. Fixed resistors would also work, they should add to about 10k Ohms.


No heat sink is necessary if a flow of 200LFM (linear feet per minute) cooling air is provided. This can be supplied by a 10 cubic feet per minute fan that is about 2.5 inches square. Pentium cooling heat-sink-fans will also do this.

Standard heatsinks are available for half-brick modules such as Wakefield 517-95AB, 527-45AB, 527-24AB, 518-95AB, 528-45AB, 528-24AB, or the less expensive CUI VHS-45 or VHS-95.

If you have no active cooling derate the output current according to the following table
Input Voltage Maximum output current in
still, open air, 23°C ambient.
Faceplate temperature  
24V 10 A 75°C  
36V 12A 95°C  
48V 12.5A 96°C  
75V 12.5A 96°C  

NOTE! these faceplate temperatures are definitely in the "burn your fingers" category and care should be taken to prevent human contact.

Warning, the hot surface
FREE Proteus files and Gerber files for a circuit board to fit this DC converter brick


circuit board to mount the DMW75S-05
Printed circuit board dimensions are 107mm x 76mm (4.2 x 3.0 inches)
Complete circuit board assembly
The fully populated board dimensions are 107mm x 76mm x 23mm (4.2 x 3.0 x .9 inches). It includes connectors for Vin and Vout as well as inhibit and Sense terminals. The board mounting holes are 3.6 mm (0.143 inch) in diameter 64mm x 95mm center to center spacing.

Dimensioned drawing of the DMW75S-05
Dimensioned drawing of the Brick itself.

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  1. 5VDC 15Amp converter dc dc, 24v to 5v converter
  2. brick converter dc dc, 36V input, 48V input, 24V input, 60V input

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