VITA 62 Power Supply
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VITA 62 Power Supply VIT028x3U600y000 VITA 62 DC-DC Converter Features & Benefits Product Description The Vicor VITA 62 power supply is a COTs power supply that is designed for 3U Open VPX systems. The module utilizes Vicor proprietary technology to enable high efficiency and power density for this highly rugged, conduction-cooled model. • 18 – 45V input voltage range • 600W output power • 3U Open VPX power supply • Conduction cooled • I2C™ monitoring and control Up to four power supplies can be paralleled to increase output power capability of VS1, VS2, VS3 outputs with proprietary wireless current sharing. Conventional current-share pins are eliminated. Current share accuracy is ±2A. • Input voltage reverse‑polarity protection • Remote voltage sense: VS1, VS2, VS3 • Parallel operation capable with proprietary wireless current sharing • Overcurrent, overvoltage and overtemperature protections • IPC 610 class 3 • No aluminum electrolytic capacitors • Enable, inhibit, system reset and power fail controls • Accredited laboratory military standard compliance: [a] MIL-STD-704F MIL-STD-461G MIL-STD-810G MIL-STD-1275E RTCA/DO-160G Typical Applications • VPX power modules • Avionics • Shipborne electronics See detailed specifications; contact Vicor Applications Engineering for report details. VITA 62 DC-DC Converter Page 1 of 34 Note: Product images may not highlig

3U P0 Connector Note: See mechanical drawing on page 30 for connector information. VITA 62 DC-DC Converter Page 2 of 34

Function / Name Backplane may repurpose this contact for a signal less than 20V Backplane may repurpose this contact for a signal less than 20V Backplane may repurpose this contact for a signal less than 20V Backplane may repurpose this contact for a signal less than 20V Backplane may repurpose this contact for a signal less than 20V Input control signal as defined in VITA 62, referenced to SIGNAL_RETURN Input control signal as defined in VITA 62, referenced to SIGNAL_RETURN Backplane may repurpose this contact for a signal less than 20V Backplane may repurpose this contact for a signal...

VIT028x3U600y000 Part Ordering Information Part Number Product Grade Factory-Configured Options Conformal Coating D = Coated + AU-plated Connector Factory option 000 units can be set by the user to parallel ready or standalone operation only via I2C™. See I2C user guide for information on changing the unit from Parallel operation to Standalone. By default, units are set to parallel from the factory. Absolute Maximum Ratings The absolute maximum ratings below are stress ratings only. Operation at or beyond these maximum ratings can cause permanent damage to the device. Parameter Total Output...

VIT028x3U600y000 Electrical Characteristics All data at nominal line and nominal load unless otherwise specified. Attribute Conditions / Notes Overall System Characteristics System Efficiency Nominal line, 25% aggregate loads Nominal line, 50% aggregate loads Nominal line, 100% aggregate loads Power Input Characteristics Operating Input Voltage Range Input Current (No Load) Inrush Current Power On to +3.3VAUX Output Delay 18 28V Input, enable asserted, inhibit de-asserted Peak no load, nominal line, high line; see Figure 5 If ENABLE* is tied to signal ground Input Undervoltage Lockout...

VIT028x3U600y000 Electrical Characteristics (Cont.) All data at nominal line and nominal load unless otherwise specified. Attribute Conditions / Notes Main Outputs (Cont.) VS3: +5V Output Output Voltage Set Point Output Regulation Over Line & Load Nominal line over load range, 20MHz BW; measured with 1µF and 10µF ceramic capacitor Output Voltage Ripple / Noise Rated Output Current Maximum Operating Transmission Voltage Drop Maximum Output Capacitance Soft-Start Ramp Time All full load with max CO-VS3 VS2: +3.3V Output Output Voltage Set Point Output Regulation Over Line & Load Nominal line...

VIT028x3U600y000 Electrical Characteristics (Cont.) All data at nominal line and nominal load unless otherwise specified. Attribute Conditions / Notes Auxiliary Outputs VAUX1: –12V Output Output Voltage Set Point Output Regulation Over Line & Load Nominal line over load range, 20MHz BW; measured with 1µF and 10µF ceramic capacitor Output Voltage Ripple / Noise Rated Output Current Maximum Output Capacitance Soft-Start Ramp Time All full load with max CO-VAUX1 VAUX3: +12V Output Output Voltage Set Point Output Regulation Over Line & Load Output derived directly from VS1,+12V Main Output;...

VIT028x3U600y000 Signal Characteristics All of the following plots are at nominal line and 600W aggregate load unless otherwise noted. ENABLE*: Enable* • The ENABLE* pin or control register bit enables and disables the +3.3V AUX output of the power supply. • The ENABLE* pin has an internal pull-up to VCC and is referenced to the Signal Return pin of the power supply. Signal Type Digital Input Conditions / Notes ENABLE* Enable Threshold ENABLE* Disable Threshold ENABLE* Internal Pull‑Up Resistance to VCC ENABLE* Enable Debounce Delay ENABLE* Disable Debounce Delay Conditions / Notes Status...

VIT028x3U600y000 Signal Characteristics (Cont.) All of the following plots are at nominal line and 600W aggregate load unless otherwise noted. GA0*, GA1*: Geographical Address I2C™ • The GA0* and GA1* pins sets the address of the power supply. Geographical address is set at start up and cannot be changed without a power cycle. • The GA0* and GA1* pins have an internal pull-up to VCC and is referenced to the Signal Return pin of the power supply. Signal Type Digital Input Conditions / Notes Address Pins Low Threshold Address Pins High Threshold ENABLE* Internal Pull‑Up Resistance to VCC...

VIT028x3U600y000 Application Characteristics All of the following plots are at nominal line and 600W aggregate load unless otherwise noted. ENABLE* grounded ENABLE* grounded Figure 1 — Response time from ENABLE* pin grounded to outputs available; under 200ms start; 28VIN, INHIBIT* floating, ENABLE* grounded, no load Figure 5 — Measured inrush current at 28V input voltage VITA 62 DC-DC Converter Page 10 of 34 ENABLE* float Figure 4 — Discharge time of all outputs from ENABLE* pin moving from ground to floating Figure 3 — Response time from VIN applied to outputs available; under 200ms start;...