Description
Features
- Universal AC input range selectable by a switch
- Protections: short circuit, overload and overvoltage
- Forced air cooling by built-in DC fan
- LED indicator for power on
- 100% full load burn-in test
- Low cost and high reliability
Specification
| Model | ATO-S-250-12 | ATO-S-250-24 | |
| Output | DC Voltage | 12V | 24V |
| Rated Current | 20A | 10A | |
| Current Range | 0 ~ 20A | 0 ~ 10A | |
| Rated Power | 240W | 240W | |
| Ripple & Noise (Max.)(Note 2) | 150mVp-p | 150mVp-p | |
| Voltage Adjust Range | 10 ~ 13.2V | 20 ~ 26.4V | |
| Voltage Tolerance (Note 3) | ±1.0% | ±1.0% | |
| Line Regulation | ±0.5% | ±0.5% | |
| Load Regulation | ±0.5% | ±0.5% | |
| Setup, Rise, Holdup Time | 200ms, 100ms, 20ms at full load | ||
| Input | Voltage Range | 90 ~ 132VAC/180V~264VAC (selected by a switch) or 254 ~ 370VDC | |
| Frequency Range | 47~63Hz | ||
| Efficiency (Typ.) | 80% | 83% | |
| AC Current (Typ.) | 4.9A/115V AC 2.8A/230V AC | ||
| Inrush Current (Typ.) | Cold start: 50A/230V AC | ||
| Leakage Current | <3.5mA/240V AC | ||
| Protection | Overload | 105~135% rated output power | |
| Protection type: Constant current limiting, recovers automatically after fault condition is removed. | |||
| Overvoltage | 13.8 ~ 16.2V | 27.6 ~ 32.4V | |
| Protection type: Hiccup mode, recovers automatically after fault condition is removed. | |||
| Environment | Working Temperature | -10 ~ +50℃ | |
| Working Humidity | 20~90% RH non-condensing | ||
| Storage Temperature | -20~+85℃ | ||
| Storage Humidity | 10~95% RH non-condensing | ||
| Temperature Coefficient | ±0.03%/℃ (0~50℃) | ||
| Vibration | 10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes | ||
| Safety & EMC | Safety Standards | UL60950-1 Approved | |
| Withstand Voltage | I/P-O/P: 1.5KVAC I/P-FG: 1.5KVAC O/P-FG: 0.5KVAC | ||
| Isolation Resistance | I/P-O/P, I/P-FG, O/P-FG: 100M Ohms/500VDC/25℃/70% RH | ||
| Others | MTBF | ≥271.9K hrs MIN. MIL-HDBK-217F (25℃) | |
| Dimension | 215*115*50mm (L*W*H) | ||
| Weight | 0.95kg | ||
| Note | 1. All parameters NOT specially mentioned are measured at 230V AC input, rated load and 25°C of ambient temperature. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12″ twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor. 3. Tolerance includes set up tolerance, line regulation and load regulation. |
Dimensions (Unit: mm)
Details
SMPS Power Supply Applications
- Power Tools
Electric Saw, Drilling Machine, Ginder, Sand Blast Machine, Puching Machine, Weeding Machine, Air Compressor, etc. - Offices Devices
Computer, Printer, LCD Monitor, Scanning Machine, etc. - Electrics & Household Appliance
TV, VCRS, Radio, Dust Collector, Fan Lamp or LED Strip, Sewing Machine, Microwave Oven, Fridge/Freezr, Coffemarker, etc. - Industrial Equipemnt
Monitoring Equipment, Shipping, Vehicle, Metalhalide Lamp, Solar System, Wind Power Generation, etc.
Tips: Switching power supply vs. linear power supply
Switching power supply (SMPS) depends on breakover of MOS transistors between upper and lower bridges. Current flows in through MOS transistors of upper bridge and then gather electric power at the coil by its storage function. At last, the power supply closes MOS transistors of the upper bridge and opens those of the lower bridge. The coil and capacitor would supply power to external part. Then, switching power supply would close MOS transistors of the lower bridge and reopen the upper bridge to let the power in. The foresaid process would be repeated. MOS transistors need to be opened alternatively, so it is called switching power supply.
Linear power supply is different from switching power supply. It is equipped with no switches, so the upper hose keeps draining off. MOS transistors of some linear power supplies emit lots of heat. Excessive electric power is converted to heat. It can be found conversion efficiency of linear power supply remains very low. When components are stuck in high temperature, their life span will be reduced and their actual effect will be influenced.
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