FSP400M-70PD – 400W ATX AC/DC medical desktop powersupply
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- Desktop power supplies
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- FSP Protek
The FSP400M-70PD is a 400W AC/DC medical power supply in a standard 140 × 150 × 86mm PS2/ATX enclosure. It is designed for medical electrical equipment and x86-based systems requiring conventional ATX voltage rails and cable interfaces. The unit accepts 90–264VAC at 47–63Hz and incorporates active power factor correction with a minimum power factor of 0.9. IEC 60601-1 and IEC 62368-1 certification, BF-class insulation and specified 2 MOPP input-to-output isolation support integration into safety-controlled equipment. Separate +12V rails, a DC/DC-derived +3.3V output and low minimum-load requirements support compatibility with entry-level PC platforms. Full-load operation is specified from 0°C to +50°C, followed by linear derating to 50% load at +70°C. The power supply is also rated for installation at altitudes of up to 5,000 metres.
The FSP400M-70PD is a medical-grade 400W AC/DC power supply built in a standard PS2 / ATX enclosure for systems that require conventional ATX rails and connector sets. It combines broad 90–264VAC input capability, active PFC, BF-class insulation and specified 2 MOPP isolation to support integration into medical electrical equipment.
With IEC 60601-1 and IEC 62368-1 certification, separate +12V rails, a DC/DC-derived +3.3V rail and operation up to 5,000 metres, it is suited to x86-based medical platforms and other safety-controlled equipment needing an ATX-format medical PSU.
Range features
A high level overview of what this range offers
- 400W continuous output – Supplies multi-rail power for ATX-based medical computing systems.
- Standard PS2 / ATX form factor – Fits equipment designed around a conventional 140 × 150 × 86mm ATX power supply footprint.
- 90–264VAC input range – Supports operation across a wide range of mains supplies.
- Active PFC – Provides a minimum specified power factor of 0.9.
- Medical and ICT certifications – IEC 60601-1 and IEC 62368-1 compliance support regulated equipment integration.
- BF-class insulation and 2 MOPP isolation – Specifies 4,000VAC input-to-output withstand voltage for medical system design.
- 80 PLUS Gold efficiency profile – Rated at 87%, 90% and 87% efficiency points.
- DC/DC-derived +3.3V rail – Supports stable output behaviour across changing system loads.
- Class B emissions performance – EN 55011 and EN 55022 Class B specifications support EMC-conscious designs.
- Comprehensive protection functions – Overvoltage, overcurrent and short-circuit protection are provided on key output rails.
- High-altitude capability – Rated for operation up to 5,000 metres.
- Complete ATX cable set – Includes motherboard, CPU, PCIe, SATA, PATA and floppy connectors.
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for FSP400M-70PD - 400W ATX AC/DC medical desktop powersupply
What’s in this range?
All the variants in the range and a comparison of what they offer
| Specification | Value |
|---|---|
Product type | Medical AC/DC ATX power supply |
Maximum continuous output | 400W |
Form factor | PS2 / standard ATX |
Dimensions | 140 × 150 × 86mm |
Weight | 1.817kg |
Input voltage | 90–264VAC |
Input frequency | 47–63Hz |
Input current at 115VAC, 60Hz | 6A RMS |
Input current at 230VAC, 50Hz | 3A RMS |
Power factor | 0.9 minimum |
Power factor correction | Active PFC |
Efficiency profile | 80 PLUS Gold; 87%, 90%, 87% |
Input-to-output withstand voltage | 4,000VAC, 2 MOPP |
Operating temperature | 0°C to +50°C |
Derating | 100% load at +50°C, linearly reduced to 50% load at +70°C |
Maximum operating altitude | 5,000 metres |
MTBF | 100,000 hours at full load and 25°C ambient, calculated to MIL-HDBK-217 |
| Output | Minimum load | Maximum load | Load regulation | Ripple and noise | Notes |
|---|---|---|---|---|---|
+3.3V | 0.1A | 21A | ±5% | 50mV P-P | DC/DC-derived output |
+5V | 0.1A | 18A | ±5% | 50mV P-P | — |
+12V1 | 0.2A | 18A | ±5% | 120mV P-P | — |
+12V2 | 0.05A | 18A | ±5% | 120mV P-P | — |
+12V3 | — | — | ±5% | 120mV P-P | Not used by this model |
-5V | 0A | 0.2A | ±10% | 100mV P-P | Available on request; not fitted to the standard model |
-12V | 0A | 0.5A | ±10% | 120mV P-P | — |
+5V standby | 0A | 3A | ±5% | 50mV P-P | Auto-recovery protection |
Combined +3.3V and +5V output | — | 120W | — | — | Maximum combined power |
Combined +12V output | — | 29A | — | — | Maximum combined current |
Total output | — | 400W | — | — | Maximum continuous output |
| Protection | Monitored outputs | Response |
|---|---|---|
Overvoltage protection | +3.3V, +5V and +12V | Latch-off |
Overcurrent and short-circuit protection | +3.3V, +5V and +12V | Latch-off |
Overcurrent and short-circuit protection | -12V and optional -5V | Automatic recovery |
Overcurrent and short-circuit protection | +5V standby | Automatic recovery |
| Standard or test | Performance |
|---|---|
IEC 60601-1-2 | Medical EMC performance |
EN 55011 / EN 55022 | Class B conducted and radiated emissions |
EN 61000-3-2 | Class A harmonic current emissions |
EN 61000-3-3 | Voltage fluctuation and flicker |
EN 61000-4-2 | ±15kV air discharge and ±8kV contact discharge |
EN 61000-4-3 | 9–28V/m radiated immunity |
EN 61000-4-4 | ±2kV electrical fast transient and burst |
EN 61000-4-5 | ±1kV differential-mode and ±2kV common-mode surge |
EN 61000-4-6 | 10Vrms conducted immunity |
EN 61000-4-8 | 30A/m magnetic-field immunity |
EN 61000-4-11 | 30% reduction for 500ms, 60% reduction for 100ms and greater than 95% reduction for 10ms |
| Reference | Output connector | Cable length | Quantity | Connector or equivalent |
|---|---|---|---|---|
P1 | Motherboard, 24-pin | 500mm | 1 | Molex 39-01-2240 |
P2 | CPU, 8-pin | 500mm | 2 | Molex 39-01-2080 |
P3 | PCIe, 6+2-pin | 500mm | 1 | WST P8-I42002K21B-B |
PD, PE, PF, PG | SATA | 500 + 150mm | 2 + 2 | Molex SD-67926-0011 and SD-67582-0011 |
PA, PB, PC | PATA and floppy | 500 + 150 + 150mm | 1 + 1 + 1 | AMP 1-480424-0 and AMP 171822-4 |
FAQs
for FSP400M-70PD – 400W ATX AC/DC medical desktop powersupply
Yes. The unit is specified for full-load operation from 0°C to +50°C. Above +50°C, the available load must be reduced linearly until it reaches 50% at +70°C.
The specified operating range is 90–264VAC at 47–63Hz. Input current is rated at 6A RMS with a 115VAC, 60Hz supply and 3A RMS with a 230VAC, 50Hz supply.
The +12V1 and +12V2 rails are each rated for up to 18A. Their combined maximum output is limited to 29A, so the two individual rail ratings cannot be added together without applying the combined limit.
The +3.3V rail is rated for up to 21A and the +5V rail for up to 18A. The combined output from these two rails must not exceed 120W.
Input-to-output isolation is rated at 4,000VAC and 2 MOPP. Earth leakage current is limited to 250μA maximum, while touch leakage current is limited to 100μA maximum at 264VAC and 63Hz.
Overvoltage, overcurrent and short-circuit conditions on the +3.3V, +5V and +12V rails cause a latch-off response. The -12V, optional -5V and +5V standby outputs use automatic recovery for overcurrent and short-circuit conditions.
The cable set includes a 24-pin motherboard connector, two 8-pin CPU connectors, one 6+2-pin PCIe connector, four SATA connections arranged across two cable runs, and PATA and floppy connections.
Operation is specified at altitudes of up to 5,000 metres. System-level thermal management, insulation coordination and regulatory assessment must still account for the complete equipment design and installation environment.
The unit specifies EN 55011 and EN 55022 Class B conducted and radiated emissions. It also lists medical EMC performance under IEC 60601-1-2, including ESD, surge, burst, radiated immunity, conducted immunity, magnetic-field immunity and voltage-dip testing.
No. The -5V rail is available on request and is not included with the standard configuration. Where required, it is rated for up to 0.2A.
