PS79
Power Supplies
375 Watt Power Supplies
Power Factor Corrected | High Current | Compact
Features
- Power Factor Corrected to meet EN 61000-3-2: 95
- 470 Watts peak for disk surges
- Smallest package and highest MTBF in its Power Class
- Full Protection on all outputs and over-temperature shut-down
- International Safety Agency Certification
- Compact open frame package (7.0” L x 5.0” W x 2.5” H)
- One to four outputs with maximum 60A on V1
- Full AC input range
- Inrush limiting and soft start
- Low line protection
- Proven Design based upon a unit with over 100,000 installations
- Single 48VDC at 9A output unit (432W continuous).
- Droop current share
- Optimum cost/performance and size
Specifications
| Nominal AC Input | 100-240VAC, 6A/3A, 60/50Hz. Operating 90VAC to 264VAC, 47-63Hz; short term brownout to 85VAC. |
| Inrush Current | 30A, averaged over first half cycle from a cold start on AC. |
| Hold-Up Time | 20mS at 90VAC, full load. |
| Brown Out | AC input below 90VAC causes no supply damage. |
| Power Factor | 0.98, typically 0.99 at full load. |
| Efficiency | 73% at full load (varies with output voltages chosen, load and AC input). |
| Fusing | The supply shall be fused externally with a 6A ,7A or 10A, 250V CSA/UL approved, normal blow fuse, depending on the model. |
| Leakage Current | 0.75mA when measured in accordance with EN 60950. |
| Temperature | Operating 5oC to 50oC with minimum 30CFM airflow lengthwise or from the top. Non-operating -40oC to+75oC. |
| MTBF | Consult factory for complete details. |
| Remote Sense | Compensates up to 0.25V on the +5V channel (V1). |
| Output Protection | All outputs are fully protected with latched shutdown in the event of overvoltage or overtemperature. |
| Remote ON-OFF | Logic level remote power ON-OFF (SELV; TTL and low level switch compatible) is available. Standard levels are ON low, and OFF open or high. |
| Power Fail Warning | Active low, 5mS warning; optional turn-on delay. |
| Shut-Down Input | An optional input is available to force latched shut-down for remote over-temperature or fan failure detection applications (100 PTC, normally closed contact or open collector gate required). The AC line or remote ON-OFF must be cycled to reset. |
| Fault Reset Time | A latched fault shut-down requires an interruption of the AC input for one second to reset, or cycling of remote ON-OFF. |
| Outputs | Standard versions are SELV with common return, isolated ±50V DC with respect to chasis. Please contact factory for semi-custom variants which may usually be incorporated inexpensively. |
| Mechanical | 7.0” x 5.0” x 2.5” (LxWxH) |
| AC Connector | Molex 5219 series (15-31-1036) |
| Output Connectors | Two 10-32 studs for output 1; Molex Mini-Fit, Jr series (39-28-1103) for balance on most versions. |
| Safety Approvals | CSA 950 (234) / UL 1950 (CSA/NRTL) certified; licensed by TUV to EN 60950 |
*Note Text
PS79 Family 375W (470W peak)
| Available Output Ranges3 | Rated Voltage | Output Current | Line/Load Regulation | Protection | Noise & Ripple Max. Load | |||
|---|---|---|---|---|---|---|---|---|
| Rail | ocp | ovp | uvp | otp | ||||
| 1 | 2V to 56V | 5-60A | ±1% (RS) | Yes | Yes | Yes | Yes | <50mVp-p or 1% |
| 2 | -56 to +56V | 0-20A2 | a) ±1% (MA) b) ±12%, -5%1 | Yes | Yes | Yes | Yes | <100mVp-p or 1% |
| 3 | -56 to +56V | 0-10A2 | ±5%2 | Yes | Opt | Opt | Yes | <50mVp-p or 1% |
| 4 | -56 to +56V | 0-10A2 | ±5%2 | Yes | Opt | Opt | Yes | <100mVp-p or 1% |
Notes
1. Worst case envelope for unregulated version when +5V Rail 1 has remote sense option (±5% without RS)
2. Depends on other options and output connectors chosen
3. Consult factory for details on specific models and possible variants
–
RS: Remote Sense
MA: Magnetic Amplifier post regulator
Outline Drawing
Output Connector
| J3 | (Standard) |
| Pin1 | Common |
| Pin2 | V2 |
| Pin3 | V3 |
| Pin4 | V1 Ret. Sense |
| Pin5 | PFW* |
| Pin6 | Common |
| Pin7 | V2 |
| Pin8 | V4 |
| Pin9 | V1 Sense |
| Pin10 | ROF |
Specifications subject to change.