NCF660 Series – Open Frame 660 W medical AC/DC power supply
- Technology
- Open / u-frame power supplies
- Partner
- Advanced Energy
The NCF660 Series medical AC/DC power supply is designed for integration into equipment requiring a compact, component-level medical power solution. Its U-channel format measures 178.0 × 101.6 × 40.6 mm, making it suitable for systems where installation space and cooling must be carefully planned. Available single-output versions provide 12 V, 15 V, 24 V or 48 V nominal outputs, with model-dependent power ratings under forced-air and convection-cooled conditions. The series delivers up to 660 W with at least 300 LFM airflow and up to 440 W by convection, depending on model. Low patient leakage current, 4,000 VAC input-to-output isolation and 5 kV defibrillator pulse withstand support use in equipment intended for Type CF applications. The power supply itself is a component and is not classified as an applied part. A 5 V standby output, DC OK signal and inhibit control support system-level sequencing and monitoring. Integrated overvoltage, overload and short-circuit protection help safeguard the power supply and connected circuitry. Typical application areas include surgical systems, medical lasers, ablation equipment and dialysis systems.
The NCF660 Series medical AC/DC power supply is a compact open-frame, U-channel solution for medical equipment that needs high power density, low leakage current and support for CF-related system requirements. It is available in 12 V, 15 V, 24 V and 48 V single-output versions and supports both convection-cooled and forced-air-cooled designs.
Typical integration targets include surgical equipment, medical laser systems, pulsed-field or radiofrequency ablation equipment and dialysis systems. Auxiliary functions such as 5 V standby, DC OK and remote inhibit make the series well suited to controlled system power architectures.
Range features
A high level overview of what this range offers
- 12 V, 15 V, 24 V and 48 V nominal outputs – Supports a wide range of medical equipment power architectures.
- Up to 660 W with at least 300 LFM airflow – Enables higher output capability when specified forced-air cooling is available.
- Up to 440 W by convection – Allows lower-power operation without dedicated airflow, depending on model.
- Low patient leakage current – Typical input-to-output leakage is below 6 µA in normal condition and below 15 µA in single-fault condition at 264 VAC, 60 Hz.
- 5 kV defibrillator pulse withstand – Supports use in equipment exposed to defibrillation-related electrical stress.
- 4,000 VAC input-to-output isolation – Provides 2 MOPP between mains input and DC output.
- 85 to 264 VAC input range – Supports global mains operation.
- Class B emissions performance – Helps simplify EMC planning at system level, subject to final integration.
- 5 V standby output at 1 A – Powers auxiliary control functions independently of the main output state.
- DC OK and inhibit signals – Supports sequencing, monitoring and remote output control.
- Overvoltage, overload and short-circuit protection – Helps protect the PSU and connected circuitry during abnormal conditions.
- No minimum load requirement – Suitable for systems with variable or intermittent demand.
- Optional ±5% output adjustment – Allows output trimming for application-specific requirements.
- 178.0 × 101.6 × 40.6 mm format – Defines a compact mechanical envelope for equipment integration.
- -20°C to +70°C operating range – Supports broad environmental conditions with derating above 50°C.
- 7+ years electrolytic capacitor life – Based on stated continuous operating conditions at 25°C.
- MTBF above 500,000 hours – Calculated to Telcordia SR-332 conditions.
- Three-year warranty – Provides a defined product support period.
What’s in this range?
All the variants in the range and a comparison of what they offer
| Specification | Value |
|---|---|
Product type | Open-frame, U-channel medical AC/DC power supply |
Number of main outputs | Single |
Nominal main output options | 12 V, 15 V, 24 V or 48 VDC |
Maximum output power | Up to 660 W, model and cooling dependent |
Convection-cooled output power | Up to 440 W, model dependent |
Forced-air requirement | At least 300 LFM for forced-air ratings |
Input range | 85 to 264 VAC, 47 to 63 Hz, single phase |
Safety-certified input | 100 to 240 VAC, ±10% |
Input current | 7.0 A maximum at 115 VAC; 3.5 A maximum at 230 VAC |
Inrush current | 40 A maximum, cold start at 264 VAC |
Input class | Class I |
Typical efficiency | Above 90% |
No-load input power | Below 1.0 W with the main output inhibited |
Input-to-output isolation | 4,000 VAC, 2 MOPP |
Input-to-earth isolation | 1,500 VAC, 1 MOPP |
Output-to-earth isolation | 1,500 VAC, 1 MOPP |
Defibrillator withstand | 5 kV pulse |
Standby output | 5 VDC at 1 A |
DC OK signal | Logic high while the DC output is within regulation |
Inhibit control | Main output on when open or logic high; off when shorted to RTN or logic low |
Output adjustment | ±5%, optional |
Minimum load | Not required |
Protection | Overvoltage, overload and short-circuit protection |
MTBF | Above 500,000 hours per Telcordia SR-332, Issue 6 |
Electrolytic capacitor life | More than seven years at 25°C under stated continuous operating conditions |
Warranty | Three years |
Compliance materials | RoHS and REACH compliant |
Operating temperature | -20°C to +70°C |
Temperature derating | Linear derating from 50°C to 70°C; 50% load at 70°C |
Storage temperature | -40°C to +85°C |
Relative humidity | 5% to 95%, non-condensing |
Audible noise | Below 20 dBA |
Mechanical dimensions | 178.0 × 101.6 × 40.6 mm |
Mounting type | U-channel |
| Model | Nominal output | Forced-air power | Convection power |
|---|---|---|---|
NCF660S12K | 12 V | 560 W | 370 W |
NCF660S15K | 15 V | 560 W | 370 W |
NCF660S24K | 24 V | 660 W | 440 W |
NCF660S48K | 48 V | 660 W | 440 W |
- 300 LFM airflow is required to achieve the listed forced-air ratings.
- The 15 V model availability should be confirmed before final design release.
- 12 V and 15 V versions are limited to 560 W with airflow and 370 W by convection.
- 24 V and 48 V versions reach the full 660 W forced-air rating and 440 W by convection.
FAQs
for NCF660 Series – Open Frame 660 W medical AC/DC power supply
The series provides nominal 12 V, 15 V, 24 V and 48 V main-output options. The 15 V version has a specified model number, but availability should be confirmed before finalising a design.
No. The 24 V and 48 V models provide up to 660 W with at least 300 LFM airflow and up to 440 W by convection. The 12 V and 15 V models are rated at 560 W with forced air and 370 W by convection.
No. It is a component power supply, so it cannot itself be declared an applied part. Its isolation, creepage, clearance, hi-pot and patient-leakage characteristics have been evaluated for use within equipment intended for Type CF applications.
A minimum airflow of 300 LFM is required. The documented airflow direction should be followed, and the equipment designer must ensure that component temperatures remain within specified limits.
The output must be derated linearly between 50°C and 70°C. At an ambient temperature of 70°C, the permitted output is 50% of the applicable full-load rating.
The NCF660 includes a 5 V, 1 A standby output, a DC OK signal and a main-output inhibit input. The main output remains enabled when the inhibit input is open or logic high and is disabled when the input is shorted to RTN or driven logic low.
The series includes overvoltage, overload and short-circuit protection. Overvoltage protection operates between 110% and 130% of nominal output and requires the AC input to be recycled, while short-circuit protection uses hiccup-mode operation.
The input-to-output isolation rating is 4,000 VAC and provides 2 MOPP. Input-to-earth and output-to-earth isolation are each rated at 1,500 VAC and provide 1 MOPP.
Conducted emissions are specified to Class B levels. Radiated emissions are also specified to Class B levels, although a ferrite core may be required depending on the final equipment configuration, cabling and installation.
The unit measures 178.0 × 101.6 × 40.6 mm and uses mounting centres of 167.00 × 85.60 mm. M3 mounting screws must not penetrate by more than 3.5 mm, and the required airflow path, electrical clearances and access to the input, output and signal connectors must be maintained.
