3U VPX PSU
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
VITA 62 3U ISOLATED 350W 28VDC POWER
SUPPLY
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.
Features:
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
| Overview |
| 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 |
| FEATURES
|
| 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 |
| COMPLIANCE
|
| MIL-STD-461 |
YES |
| MIL-STD-810G |
YES |
| * ESD Protection |
YES |
| * Shock |
YES |
| * Vibration |
YES |
| * Rapid Decompression |
YES |
| Corrosion Resistance |
YES |
| * Fungus Resistance |
YES |
| * Altitude |
YES |
| * Humidity |
YES |
| INPUT CHARACTERISTICS
|
| 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 |
|
| OUTPUT
CHARACTERISTICS
|
| 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
