April 21, 2023

175 Watt 5V 35A Output Fully Isolated DC/DC Converter half-brick with 24VDC (20V-36V) input


Mounted on the circuit board with terminals	Component version

SV28-5-175-1 DC to DC 175 watt converter with a wide input voltage range, 20VDC-36VDC. This makes it useful for supplying 5 volts at up to 35 amps in 24VDC and 28VDC systems. This is an amazing piece of technology, 175 watts in a 2 inch square.

Quantity	1-50	50-99	100-499	500-999	1000+
Price SV28-5-175-1 complete Consists of the SV28-5-175-1 mounted on circuit board DMW-board including connectors	$89.50
Price SV28-5-175-1 Just the DC converter brick	$79.00	$70.00	$65.00	$61.00	$58.30
Price DMW-board Ready-made PC board for mounting the DMW7S-05	$9.00

5V Isolated DC converter brick module.

SV28-5-175-1	24V to 5V, 175W DC-DC converter
Input Range	+18VDC to +36VDC
Output Voltage	5VDC
Output Current	0.5 to 35 Amps (all functions work perfectly when the output is lower than 0.5A output, but the ripple may exceed the 150 mV peak to peak specification)
Output Power	175 Watts
Voltage set point accuracy	±1%
Line Regulation	±0.1%
Load Regulation	±0.2%
Ripple and noise	150mVp-p
Input ripple rejection	60 dB at 120 Hz
Total reguation	<1.5% over allload, line, and temperature variations
Efficiency	82% typical
Remote Sense	4-Wire configuration, shared with the trim function
Remote On-Off terminal polarity	VIN Negative (turns on when pin 3 is shorted to pin 5)
Dynamic Regulation 50% load step	3%
	Settling time 300 µSec
Output voltage trim range	3VDC to 5.5VDC
Short circuit protection	Continuous
Over current protection	Continuous, 170% of full load threshold
Over voltage protection	Continuous, 5.7 to 7.0 VDC trip range
Turn-on time	< 35mS
Switching Frequency	370 kHz Constant Frequency
Temperature Coefficient	±0.07% /°C max
Temperature range	-40°C to 100°C operating (baseplate)
Input overvoltage tolerance	To 40VDC without damage, and 50 volts for 100 mSec max
Isolation	1500 VDC input to case
Isolation	500 VDC output to case
Isolation	1500 VDC input to output
Isolation capacitance	2000 pF typical
Input to output resistance	>10 MOhms
Storage Temperature	-55°C to +110°C storage
Soldering Temperature	260°C for wave soldering
Soldering Temperature	390°C for hand soldering
Over Temperature Cut-off	105°C
Thermal resistance	6.6°C/Watt with the case at 100°C
Size	2.3x2.4x0.5 inches, 58x61x11.9 mm, standard half-brick size
Vibration	5G, 3 axis, 5 minutes each
Weight	4.2 oz, 118 grams
Agency Approval	UL component (RU mark), CSA, TUV, CE Compliant
Encapsulation	Fully encapsulated
Humidity	<95%, non condensing

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

*Connect to Pin 1 to turn on.
Application Notes:

Astrodyne SuperverterApplication note

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.

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

DMW75S-05-BoardProductiongerbersandproteusfiles.zip

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.

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5VDC 35Amp converter dc dc, 24v to 5v converter
brick converter dc dc, 28V input, 28 V input, 24V input, 21V input

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