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Key Features

  9V – 36V wide Continuous Input Voltage
  1500V Isolation Between Input /Output
  Active Input EMI Filtering
 Transient look ahead/cut-off technology
  Isolated 3.3V aux,12V aux and 5V auxstandby feature
  350W Maximum Power
  95% Typical Efficiency
 -55°C to 95°C Rail Operating Temperature
 VITA 62 3U Form Factor
 SMART Function


This 3U power supply works with 9Vto 36 VDC (28VDC nominal) input voltage and isolates the input voltage ground from the output voltage ground. The power supply is conduction cooled, uses polyphase technology on all voltage rails and can provide up to 350 watts. It is suitable for use in mission critical rugged applications

Intelligent power supplies integrate a microcontroller (MCU) for a fully programmable and flexible solution. Intelligent power conversion allows configuration and reconfiguration for different applications. With intelligent power conversion, the power supply becomes a platform solution for Vita 46.11 system management-based systems. The power supply can easily be reprogrammed to support different operating limits and control inputs.


  Parallel operating with multiple power supplies, all rails
  Load sharing and balancing
  Digital On/Off control for low standby power
 Spread Spectrum Clocking of power supply stages
  Possibility of external synchronization
  Power supply sequencing and hot-swap control
  Power supply history logging and fault management
 Monitoring all input/output voltages, currents and power
 Current fold back control
 Automatic temperature drift compensation for all outputs
 Efficiency calculations at any time
 Communication via SMB/I2C (PMB)for Vita 46.11 system management
 Collects data from temperature sensors for over temperature protection
 Precision compensation of all output voltages using integrated 5ppm voltage reference

VITA Compliant VITA62
Size 3U
Temp. Range -55 +95 C
Input (AC or DC) DC
Input Range (VDC) 9-40
Active EMI Filtering YES
Efficiency (%, typ.) 95
# of outputs 6

Over-current Protection YES
Over-voltage Protection YES
Over-temperature Protection YES
Current Sharing VS1, VS2, VS3
Remote Sense YES
Standard Control YES, VITA62

OUTPUTS (Total output not to exceed 350W)
VS1, V@A +12@10A
VS2, V@A +3.3@25A
VS3, V@A +5@30A
AUX, V@A +3.3@4A
AUX, V@A +12@1.5A
AUX, V@A -12@1.5A

* ESD Protection YES
* Shock YES
* Vibration YES
* Rapid Decompression YES
Corrosion Resistance YES
* Fungus Resistance YES
* Altitude YES
* Humidity YES

Parameter Min Typ Max Units Notes
Absolute Maximum Ratings
Input Voltage
- Non-Operating -60 60 V Continuous
- Operating -40 40 V Continuous- Reverse input Protection
- Operating Transient Protection 50 v 100ms transient, square wave
Isolation Voltage 150 V
Operating Temperature -40 85 c
Storage Temperature -55 105 C
Electrical Characteristics
Input Voltage
- Continuous 9 40 V
- Transient 9 48 V 50V Transient for 100 ms
Under-Voltage Lockout -55 105 C
- Turn-On Input Voltage Threshold 8.5 9 10 V

Parameter +12V +5V +3.3V +3.3V aux +12V aux -12V aux Notes
Output Voltage Set Point, V 12 5 3.3 3.3 +12 -12 Vin = 28V
- Drift -40 deg.C to 85degC +/- 0.01 0.01 0.01 0.01 0.01 0.01 Vin = 28V
Output Voltage Trim Range, V 12 5 3.3 3.3 +12 -12 Over Line/load/temp
+/-10% +/-10% +/-10% +/-10% +/-10% +/-10% Over Line/load/temp
Output Voltage Ripple (pk-pk), mV 80 50 40 40 80 80 Full load with 1 uF + 10 uF tantalum capacitor
Operating Current Range, A 0-40 0-40 0-20 0-4 0-1.5 0-1.5
Over-Voltage Protection, V 13 6 3.6 3.6 13 13
Current Limit Inception, A 42 42 22 5 1.7 1.7
Current Limit Inception, A 42 42 22 5 1.7 1.7 Maximum Output Capacitance,mF 10 10 10 1 1 1

Block Diagram

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