Switch Mode Power Supply

Switch Mode Power Supply Advantages

A switch mode power supply (switching-mode power supply or SMPS) is an electronic power supply that uses a switching regulator in order to more efficiently control the conversion of electrical power. This higher efficiency (with lower heat dissipation) is the chief advantage of a switched-mode power supply along with smaller size and less weight.

Switch-mode power supplies are frequently used to provide the various levels of output power needed for today’s applications, and are key to achieving highly efficient and reliable AC/DC or DC/DC power-conversion systems.

DongAh is dedicated to the continued development of standard switching power supply products that set the standard for efficiency and power density. Our offering of OEM products are great as they are, or as the starting point of a new design.

DongAh Standard Switching Power Supplies are Designed for:

  • Universal AC input
  • Low profile / High-density package size
  • High efficiency operation
  • High reliability
  • Low cost manufacturing
  • International Safety Approvals

DongAh SMPS Benefits:

  • No NRE
  • Flexible and reliable
  • Short LT
  • Quick turnaround
  • Ultra-Low Noise
  • Small size & light weight
  • High efficiency

SMPS Customizations:

  • Custom packaging
  • Value Add Services
  • Odd Shape Power Supplies
  • AC/DC or DC/DC
  • Conformal Coating
  • Potting
  • NEMA Enclosures
  • Special Features
  • Power Factor Correction
  • Wide input range
  • Digital circuits
  • Multiple outputs

Switch Mode Power Supply Specifications & Data Sheets

Enlarge Model Power Output Dimensions Download PDF
switching power supplies PSU-15
Convection Cooled
15W Single Output
3.3-48 VDC
1.57 x 4.33 x 0.92″
PSU-43
Convection Cooled
43W 3 Outputs
5-24 VDC
3.00 x 5.00 x 1.10″
PSU-65W 
65W @5cfm
65W Single Output
12-48 VDC
2.00 x 4.00 x 1.25″
PSU-120-24DM 120W Single Output
24 VDC
6.00 x 3.22 x 1.89″
MPSU-150
Convection Cooled &
Medical Safety Approvals
150W 1 – 3 Outputs
3.3-48VDC
6.00 x 4.00 x 1.50″
PSU-180
Convection Cooled
180W 1 – 3 Outputs
3.3-48VDC
3.20 x 5.00 x 1.65″
PSU-192
Convection Cooled
192W Constant Current
12-32 VDC Trimmable
6.00 x 3.88 x 1.50″
SOPS-225
Convection Cooled
225W Single Output
5-48 VDC
7.95 x 4.00 x 1.50″
PSU-350-Series
300W Free-Air,
350W @20cfm
350W Single Output
with 15W Standby
9.85 x 5.44 x 1.89″
PSU-350-36
Convection Cooled,
500W Peak for 5 min
350W Single Output
36 VDC
9.05 X 5.11 X 1.5″
PSU-750-48
Convection Cooled,
1250W Peak for 5 min
750W Single Output
48 VDC
13.38 x 4.57 x 1.97″

DongAh Elecomm to the Rescue!

PSU-750-48 Switch Mode Power Supply up to 1250 Watts

Our customer was having catastrophic field failures with their existing power supply. They already had their product designed, so the footprint for a new power supply had to be identical. The power supply is located in a closed boxed where convection cooling is critical. The application also required additional special power supply features. We were able to provide our PSU-750 power supply that provides extreme performance at 1250 watts peak for five minutes. Added benefits include low cost and high reliability. Our customer was thrilled.