switched mode power supply

250W 0.6 mm SECC Switching Mode Power Supply Short-circuit Protection

The Most Switch Power Supply with High Quality Realan LR-1U250W 

Specifications

1.thermal & short-circuit protection

2.250W
3.overcurrent & over voltage protection

Realan Switch Power LR-1U250W

1. Basic Configuration

1.1 Output interface: 24P (400mm), SATA+L(400mm), L+SATA(400mm), P4(400mm)

1.2 Fan: 4cm

1.3 Fan temperature control design: with

1.4 Material: 0.6SECC

1.5 Power line: 1.2m

1.6 Switchover: without

1.7 Packing: industrial packaging

2. AC Input

1.1 Input voltage

AC Input    Min Normal Max      Unit

Voltage 95  110      135      VAC rms

180      220      264      VAC rms

Frequency  50  ---  60  Hz

1.2 Max input current 3A (input 220V)/6A(input110V)

1.3 Max surge current 60A (220V, cold start at room temperature)

3. Power Efficiency

3.1 minimum 70 % (Input 220V/50Hz, full load power rating)

4. DC Output

Output voltage, current, ripple and noise

Voltage +5V     +12V   +3.3V  -12V    +5VSB

max load    12A      12A      7A  0.6A     2A

Full load     9A  9A  5A  0.5A     1.5A

Min load     1.0A     0.5A     0.5A     0.1A     0.1A

Regulation  ±5%    ±5%    ±5%    ±10%  ±5%

Ripple 50mV    120mV 50mV   200mV 50mV

Noise   100mV 240mV 100mV 300mV 100mV

● Power supply works continuously, the DC output total power with no more than 180W, +3.3V and +5V sum of output power maximum 90 W.

●  A 0.1uF ceramic disk capacitor & 10uF electrolytic (low ESR) capacitor should be put across the output terminals during ripple & noise measure. The oscilloscope bandwidth set at 20MHz with co-axial probe.

● Regulation load must within 30% to 70% of maximum load.

●AMBIENT TEMPERATURE 25℃

5. Protection

NOTE: due to overpower, overvoltage, under voltage, short-circuit protection movement, the power locked in shut off condition, only when these reasons remove, remote control switch at least 1 second reduction (or at least reset shut the power supply after 10 seconds), power supply can restart.

5.1 Short-circuit protection: the power supply will be automatic protection and close the output no matter which output terminal short circuit.

5.2 OVER LOAD PROTECTION

120-160% of maximum power

5.3 SHORT CIRCUIT PROTECTION

All output to ground

6. Time SEQ Test

6.1 POWER GOOD signal delay time (T3): 100ms ≤T3≤500ms

6.2 POWER GOOD signal rise time (T4): T4≤10ms

6.3 Hold-up Time (T5): T5≥16ms

6.4 POWER FALL signal delay time (T6): T6≥1ms

7. Remote Switch Control

7.1 DC output (except for +5Vsb) can be controlled by logic circuit

7.2 Logic circuit controls power supply on and off

Input low voltage 0~0.8V      Power supply turn ON

Input High Voltage 2~5.25V         Power supply turn OFF

8. Auxiliary Output +5Vsb

Power supply output a rated current value for 2A +5V boost voltage, the output voltage is only controlled by the input voltage.

9. Hi-pot Test

Input to earth: AC 1500V keep 3.0 seconds, the biggest leakage current 10mA

10. Earth Continuity Test

Under 24A current test condition, resistance≤100mΩ

11. Environment

11.1 Use environment temperature: 5℃ to +40℃

11.2 Use environment relative humidity: 20% to 85%

11.3 Storage environment temperature: -40℃ to +70℃

11.4 Storage conditions relative humidity: 10% to 90%