300W 3"x5" AC-DC Open Frame Power Supply
TES300A Series
Compact 3"x5" open frame design with an ultra-low 1.2 inch (30.5 mm) profile, ideal for space-constrained applications
Versatile power delivery: Up to 300W with forced air cooling and 220W under convection cooling for varied system requirements
Achieves high efficiency (up to 94%) and minimal standby consumption (<0.5W no-load power), meeting stringent global energy requirements
Comprehensive safety and EMI compliance: Certified to UL/IEC/EN 62368-1 and EN 55032
Integrated controls including 12V fan output, optional 5V standby, and remote On/Off control
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MODEL SELECTION TABLE |
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Model Number |
output Voltage |
Main Output (Current, Watt) |
12V Fan Output |
5V standby output |
Efficiency |
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Convection |
Forced-cooled |
Convection |
Forced-cooled |
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TES300A12 |
12Vdc |
16.67A/200W |
25A/300W |
0.5A |
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94% |
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TES300A24 |
24Vdc |
9.17A/220W |
12.5A/300W |
95% |
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TES300A48 |
48Vdc |
4.59A/220W |
6.25A/300W |
95% |
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TES300A12S |
12Vdc |
16.67A/200W |
25A/300W |
1A |
2A |
94% |
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TES300A24S |
24Vdc |
9.17A/220W |
12.5A/300W |
1A |
2A |
95% |
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TES300A48S |
48Vdc |
4.59A/220W |
6.25A/300W |
1A |
2A |
95% |
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PART NUMBER |
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TES |
300 |
A |
12 |
S |
A |
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Series |
Output Watt |
- |
Output Voltage |
Optional Standby Voltage |
Output connector type |
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Blank: without Standby and Remote on/off |
Blank: locking header |
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Item |
Conditions |
Min |
Typ |
Max |
Unit |
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Input Voltage |
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85 |
|
264 |
VAC |
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Input Current |
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5 |
|
A |
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Input Frequency |
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47 |
|
63 |
Hz |
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Inrush Current |
At 230VAC, cold start@25degC |
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100 |
A |
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No load Input Power |
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0.5 |
W |
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Power Factor |
At 230VAC, full load |
0.9 |
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OUTPUT |
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Item |
Conditions |
Min |
Typ |
Max |
Unit |
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Output Voltage |
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12/24/48 |
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VDC |
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Hold Up Time |
At 115VAC |
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10 |
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ms |
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Line Regulation |
90VAC to 264VAC at full load |
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±0.5 |
% |
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Load Regulation |
No load to full load |
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±1 |
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% |
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Transient Response |
Deviation with a 50%-75%-50% load change 1A/μs, recovering to <1% within 500μs |
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4 |
% |
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Ripple & Noise |
20 MHz bandwidth and 10 µF electrolytic capacitor in parallel with 0.1 µF ceramic capacitor |
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1 |
% pk-pk |
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Item |
Conditions |
Min |
Typ |
Max |
Unit |
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Line Regulation |
90VAC to 264VAC at full load |
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±1 |
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% |
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Load Regulation |
No load to full load |
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±1 |
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% |
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Ripple and Noise |
20 MHz bandwidth and 10 µF electrolytic capacitor in parallel with 0.1 µF ceramic capacitor |
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1 |
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% (pk-pk) |
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Remote On/Off |
Connect pin 3 of CN4 to pin 1 to turn main output off. Connect to pin 2 or leave open to turn main output on. |
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PROTECTION |
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Item |
Conditions |
Min |
Typ |
Max |
Unit |
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Overvoltage Protection |
Latch |
110 |
|
140 |
% |
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OverCurrent Protection |
based on 300W, Hiccup Mode |
120 |
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160 |
% |
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Short Circuit Protection |
Hiccup Mode, auto recovery |
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Over-Temp Protection |
Hiccup Mode, auto recovery |
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Note: All specifications are typical at 25℃ unless otherwise noted. |
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GENERAL |
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Conditions |
Min |
Typ |
Max |
Unit |
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Isolation Voltage |
Primary to Secondary |
|
3000 |
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VAC |
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Primary to Earth |
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1500 |
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Secondary to Earth |
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1500 |
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Weight |
TES300Axx |
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250 |
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G |
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TES300AxxS |
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270 |
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Item |
Conditions |
Min |
Typ |
Max |
Unit |
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Operating Temperature |
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-40 |
|
70 |
°C |
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Storage Temperature |
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-40 |
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85 |
°C |
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Cooling |
Forced Cool with 10 CFM |
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Operating Altitude |
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5000 |
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m |
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Humidity |
non-condensing |
5 |
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95 |
%RH |
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Vibration |
IEC68-2-6, 10-500 Hz, 2 g 10 mins /sweep. 60 mins for each of 3 axes |
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Shock |
IEC68-2-27, 30 g, 11 ms half sine, 3 times in each of 6 axes |
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SAFETY |
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Standard |
UL/IEC/EN 62368-1 UL/IEC/EN 60950-1 |
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Item |
Standard |
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Conducted Emissions |
EN55032:2012 +AC:2013 (CISPR 32:2012), Class B |
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Radiated Emissions |
EN55032:2012 +AC:2013 (CISPR 32:2012), Class A; Add Ferrite core in input and output side for Class B |
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Harmonic Current emissions |
EN61000-3-2:2014, Class A |
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Voltage fluctuations & flicker |
EN61000-3-3:2013 |
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Electrostatic discharge |
IEC 61000-4-2:2008, Criteria A |
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RS(Radiated) |
IEC 61000-4-3:2010, Criteria A |
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Electrical fast transient/burst |
IEC 61000-4-4:2012, Criteria A |
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Surge |
IEC 61000-4-5:2014, Criteria A |
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Conducted Immunity |
IEC 61000-4-6:2013 |
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Magnetic Field |
IEC 61000-4-8:2009, Criteria A |
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Dip, >95% reduction |
IEC 61000-4-11:2004, Criteria A |
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Dip, 30% reduction |
IEC 61000-4-11:2004, Criteria A |
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Interruptions, >95% reduction |
IEC 61000-4-11:2004, Criteria C* |
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Note*: The EUT was stopped operating during the test, but it’s self-recoverable after test |
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MODEL SELECTION TABLE |
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Model Number |
output Voltage |
Main Output (Current, Watt) |
12V Fan Output |
5V standby output |
Efficiency |
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|
Convection |
Forced-cooled |
Convection |
Forced-cooled |
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TES300A12 |
12Vdc |
16.67A/200W |
25A/300W |
0.5A |
|
94% |
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TES300A24 |
24Vdc |
9.17A/220W |
12.5A/300W |
95% |
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TES300A48 |
48Vdc |
4.59A/220W |
6.25A/300W |
95% |
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TES300A12S |
12Vdc |
16.67A/200W |
25A/300W |
1A |
2A |
94% |
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TES300A24S |
24Vdc |
9.17A/220W |
12.5A/300W |
1A |
2A |
95% |
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TES300A48S |
48Vdc |
4.59A/220W |
6.25A/300W |
1A |
2A |
95% |
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The open frame power supply TES300A Series features a compact 3×5" low‑profile design (only 1.2" height), ideal for space‑constrained systems. It delivers up to 300W under force cooling and 220W under convection, offering excellent thermal flexibility. With an efficiency of up to 95% and no‑load input power below 0.5W, this open frame power supply significantly reduces standby energy consumption while maintaining performance. Safety‑certified (UL/IEC 60950‑1 & UL/IEC/EN 62368‑1) with EMI compliance EN55032, it includes options like 12V fan output, optional 5V standby, and remote on/off control. Engineered for reliability, the open frame power supply includes protections such as overvoltage, overcurrent, short‑circuit, over‑temperature, and wide operating temperature range (−40°C to +70°C), making it suitable for industrial, telecom, test, and IPC applications.
TES300A Series Open Frame Power Supply | 300W High Efficiency, Compact Design
The TES300A Series open frame AC-DC power supply features a compact 3×5 inch (76.2 x 127 mm) low-profile design (1.2 / 30.5 mm height), ideal for space-constrained industrial and embedded systems. With Universal AC Input, it delivers up to 300W with forced air cooling and 220W under natural convection, offering excellent thermal flexibility. With high efficiency up to 94% and no-load input power below 0.5W, the TES300A Series not only helps reduce energy consumption but also ensures compliance with stringent global energy efficiency requirements.
Certified to ITE standard: UL/IEC/EN 62368-1 and fully compliant with EMI EN 55032, this power supply ensures maximum global safety compliance and superior EMC performance. Ideal for industrial automation, test and measurement equipment, IPC, and telecom systems, the TES300A Series is a reliable and energy-efficient solution for demanding applications worldwide.
