MU425S

425W Single Output

Medical Power Supply

www.slpower.com

MU425S

REV 3.1

14-APR-16

1

Features



3.3” x 6.2” x 1.62” Package



Up to 425W of Air-Cooled Power, 300W Convection



Universal Input 90-264Vac Input Range



5V at 2A Standby Output



12V Fan Output



Inhibit, Power Fail, DC OK Signals, Remote Sense



2 MOPP Isolation



Meets EN61000-4-2, EN61000-4-3 and EN61000-4-6

Requirements for Home Healthcare Applications



Efficiency 88% typical



3-Year Warranty



RoHS Compliant

Description

The MU425 family is designed to power the latest professional healthcare devices. All models meet 2 MOPP input-to-output

isolation. Models are available with main output voltages of 12V, 18V, 24V and 48V.

Model Selection

Model

Output Current

Ripple & Noise³

Total

OVP

Number

Volts

w/200LFM air¹

Convection²

(mV pk-pk)

Regulation

(Main Output)

Threshold

MU425S12E

12V

5Vsb

32.2A

2.0A

1.0A

22.0A

2.0A

0.5A

120mV

100mV

360mV

±3%

±5%

88%

14.0 ± 1.1V

5.5V – 8.0V

N/A

MU425S18E

18V

5Vsb

21.45A

2.0A

1.0A

14.6A

2.0A

0.5A

180mV

100mV

360mV

±3%

±5%

88%

21.0 ± 2.0V

5.5V – 8.0V

N/A

MU425S24E

24V

5Vsb

16.8A

2.0A

1.0A

11.9A

2.0A

0.5A

240mV

100mV

360mV

±3%

±5%

90%

28.0 ± 2.5V

5.5V – 8.0V

N/A

MU425S48E

48V

5Vsb

8.4A

2.0A

1.0A

5.9A

2.0A

0.5A

480mV

100mV

360mV

±3%

±5%

90%

58.0 ± 2.0V

5.5V – 8.0V

N/A

Notes:

1. Total power with 200 lfm of forced air cooling is 425W (408W for 18V, 385W for 12V) including 12V/1A for Fan output and 5V/2A standby.

2. Total convection power is 300W (280W for 12V model). Total power includes 5Vsb and Fan outputs.

3. Measured at 25°C ambient with noise probe directly at end of 6” twisted pair terminated with 0.1μF ceramic and 10μF low ESR capacitors. Values will be higher at

ambient temperatures below 0°C.

4. Efficiency values listed are typical and are measured at 115Vac input, full load output current, at an ambient temperature of 25°C.

5. Fan output regulation is with 1A min load on main output.

6. Fan Output: If the load on the output is other than a fan, a short circuit condition on the output can only be remedied by removing both the cause of the short circuit and

the load. This will allow the output to resume normal operation.

General Specifications

AC Input

100-240Vac, ±10%, 47-63Hz, 1∅

Turn On Time

(Main Output)

Main output: <1 sec. max @115Vac, rise time 30mS max.

5Vsb turn-on time is 500mS max., rise time 50mS max.

Output Voltage rise is monotonic.

Input Current

115Vac: 5.2A, 230Vac: 2.5A

Hold-up Time

Main Output: >20ms for 300W @ 120Vac/60 Hz, >16ms

5Vsb Output: >500mS

Inrush Current

264Vac, cold start: will not exceed 40Arms

within ½ cycle. I²T = 25A²/Sec maximum

Overtemperature

Protection

Sensing transformer temperature, 135°C (55°C ambient

temperature at full load), auto recovery.

Input Fuses

F1, F2: 6.3A, 250Vac

Overload

Protection

130 to 170% of rating, Hiccup Mode, auto-recovery.

Efficiency

See chart above.

Switching

Frequency

75kHz, typical