This galvanically isolated supply provides 100 watts of combined power output (+3.3V, +5V, +12V) and come equipped with MIL-STD-461 EMI filtering and transient protections specifically designed for demanding 250V spike and 100V surge requirements under MIL-STD-1275. This board provides power over stackable buses as PCI and ISA buses as well as auxiliary power output connectors for non-PC/104 systems. They support an 18-36V DC input range for 24/28VDC applications, and typically eliminate the need for additional in-line power conditioning/EMI filtering devices in military embedded systems.
Featuring a rugged mechanical design, this small form factor (3.550 x 3.775) card is designed to be used as the bottom module in a PC/104, PC/104-Plus,or PCI-104, embedded system stack, operates without any active cooling over extended temperature ranges (-40 to +85C per MIL-STD-810G), and provides resistance to high levels of shock and vibration (per MIL-STD-810G fixed wing jet, rotary aircraft, and tracked ground vehicle conditions). It is passively cooled by attaching the bottom of the card to a thermally conductive base or enclosure wall with electrically-isolated gap pad to dissipate heat. A tribute to its robustness and versatility, the PWR-21-11 power supply is integrated into various MIL-STD-810/1275/704/461 qualified Eurotech DuraCOR mission computers, DuraNET Ethernet switches, and DuraMAR mobile IP router subsystems. This small form factor supply is compatible with Cisco Systems PCI-104 5915 Series Embedded Services Router (ESR) card as well as a host of embedded Single Board Computers modules on the market.
Form Factor
PC/104-Plus (ISA + PCI)
Compliance
Designed to Meet MIL-STD-810G (Environmental), MIL-STD-1275D and MIL-STD-704F (Voltage Input, Surges, Spikes, Transients), MIL-STD-461F (Conducted Emissions & Suspectibility)
Voltage Input
Nominal 28.0 V DC (+18V to +36VDC with Support for 250V Spike and 100V Surge per MIL-STD-1275, as well as 1500V DC Galvanic Isolation)
Voltage Output
Up to 100 Watts: +5V @ 10A (50W Max), +3.3V @ 15A (50W Max), +12 V @ 1.5A (18W Max 12V derived from 3.3V rail)
Optional 50 Watt 5V Only Configuration: +5V @ 10A (50W Max)
Remote Shutoff
Remote Power on/off Shutdown Support
Function
MIL-STD Compliant Isolated DC/DC Converter Board
Converts DC Input from Vehicle Battery / Aircraft Generator to Provide Clean, Filtered Output to Size, Weight & Power (SWaP) Sensitive Embedded Systems in Mobile, Airborne, and Vehicle Applications
Standards Compliance
PC/104-Plus
MIL-STD-704F (Aircraft Power Transients)
MIL-STD-1275D (Vehicle Power Transients)
MIL-STD-461F (Conducted Emissions & Susceptibility)
MIL-STD-810G (Environmental)
Power Input
Normal Steady State Operation: 18V DC to 36V DC (28V DC Nominal)
Compatible with 100V Surge / 250V Spike Conditions (per MIL-STD-1275)
Connector: Molex Plug-Socket Connector
Power Output
Up to 100 Watts:
+5V @ 10A (50W Max)
+3.3V @ 15A (50W Max)
+12V @ 1.5A (18W Max 12V Derived from 3.3V Rail)
Connectors:
- Molex Plug-Socket Connector Rated for Full Output Capabilities of 5V, 3.3V, 12V Rails
- Stacking PCI and ISA Bus Connectors on Top of Board
Voltage / Load Protection & Conditioning
Input Protection per MIL-STD-1275D and MIL-STD-704F: Reverse Polarity, Voltage Transient, Surge (100V), Spike (250V), Reverse Polarity, EMI/RFI Filter
Electrical (Galvanic) Isolation: 1500V Input to Output, 1500V Output to Case
Output Protection: Short Circuit Protection, Overcurrent Protection, Overvoltage Protection
In-Rush Current Limited to <10A@3ms Max
Efficiency
DC/DC Conversion Efficiency: Approximately 84% at Full Load
Switching Frequency
Synchronized Switching at 350kHz for Reduced Noise and System Stress
PARD
<50 mV p-p Max (20MHz)
Remote On/Off
Remote Shutdown Support (Onboard Molex Connector)
Status Indication
Onboard Voltage Rail Status LEDs
Physical Characteristics
Form Factor:
PC/104-Plus (ISA and PCI Buses) Stack-thru Buses on Top Only
Dimensions: 3.550 x 3.775 (90x96 mm) L x W - PC/104-Plus Compliant, except Component Height on Bottom
Weight: Approx. 0.35 lbs (0.16 kg)
Cooling: Passive Conductive Baseplate Cooling: Bottom-Mounted DC/DC Converter Module Should Be Mated with Thermally Conductive, Electrically-Isolated Gap Pad Against System Enclosure Wall to Dissipate Heat. Base Plate Temperature Must Stay Below 100°C (Max).
Environmental
Designed to Meet MIL-STD-810G:
Operating Temp: -40° to +85°C / -40° to +185°F at thermal interface (MIL-810G, Methods 501,502)
Storage Temp: -55° to +100°C / -67° to 212°F at thermal interface (MIL-810G, Methods 501,502)
Operating Shock: 40g, 11ms, 3 pos/neg per axis (MIL-STD-810G, Meth 516)
Random Vibration: Jet-Helo-Tracked Vehicle Profile, 3 Axes, 1 Hour/Axis (MIL-810G, Method 514)
Humidity: Up to 95% RH @ 40C, Non-Condensing (Qual by Analysis)
EMI/EMC
Designed to Meet MIL-STD-461F:
Conducted Emissions, CE102, Power Leads, 10 KHz to 10MHz, basic curve
Conducted Susceptibility, CS101, Power Leads, 30 Hz to 150 KHz, Curve 2 (28V and Below)
Reliability
MTBF: TBD Calculated per MIL-HDBK-217F
Workmanship: Assembled to IPC-A-610 Class III Workmanship
No Moving Parts. No Active Cooling Required. Over-temperature Shutdown @ 100C
Options
Conformal Coating Special Ordered; Integrated into PC/104+ or Chassis/System