VITA 62 Power Supply
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VITA 62 Power Supply VIT028x6U1000y000 VITA 62 DC-DC Converter Features & Benefits Product Description The Vicor VITA 62 power supply is a COTs power supply that is designed for 6U OpenVPX systems. The module utilizes Vicor proprietary technology to enable high efficiency and power density for this highly rugged, conduction-cooled model. • 18 – 42V input voltage range • 1000W output power • Conduction cooled Up to four power supplies can be paralleled to increase output power capability of VS1, VS3 outputs with proprietary wireless current sharing. Conventional current-share pins are eliminated. • Input voltage reverse‑polarity protection Current share accuracy is ±2A. • 6U OpenVPX power supply • Remote voltage sense: VS1, 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] Typical Applications • VPX power modules • Avionics • Shipborne electronics See detailed specifications; contact Vicor Applications Engineering for Note: Product images may not highlight current product markings and cosmetic features. report details.

ROWS POWER Note: See mechanical drawing on page 30 for connector information. Function / Name VITA 62 DC-DC Converter Page 2 of 31

VIT028x6U1000y000 Connector Pin Descriptions (Cont.) Pin Function / Name Common output return pin, each pin is rated for 40A +3.3V main output voltage (rated for 0 – 30ADC) When any of the outputs is not within specifications, FAIL* signal will be driven low to indicate a failure Input control signal as defined in VITA 62, reference to SIGNAL_RETURN Input control signal as defined in VITA 62, reference to SIGNAL_RETURN Common output return pin, each pin is rated for 40A Common output return pin, each pin is rated for 40A Geographical address defined by VITA 46.11 Geographical address...

VIT028x6U1000y000 Part Ordering Information Part Number Product Grade Conformal Coating Factory-Configured Options 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 Power Combined outputs for all...

VIT028x6U1000y000 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 28V Input, enable asserted, inhibit de-asserted Peak no load, nominal line, high line; see Figure 5 If ENABLE* is tied to signal ground Power Output Characteristics...

VIT028x6U1000y000 Electrical Characteristics (Cont.) All data at nominal line and nominal load unless otherwise specified. Attribute Conditions / Notes Maximum Operating Transmission Voltage Drop Maximum Output Capacitance Soft-Start Ramp Time Main Outputs (Cont.) VS3: +5V Output Output Voltage Set Point VS3 output is set to VSET-VS3 at no load and adjusts the output voltage as a function load, where: VOUT_VS3 = VSET-VS3 – (0.100V • (IOUT / IR-VS3)) Output Regulation Over Line & Load Nominal line over load range, 20MHz BW; measured with 1µF and 10µF ceramic capacitor Output Voltage Ripple /...

VIT028x6U1000y000 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;...

VIT028x6U1000y000 Signal Characteristics — Control Signals The control (ENABLE*, INHIBIT*) tables are applicable over the full input/output operational range. ENABLE*: Enable* • Control action for Enable* is defined in the VITA 62 control state table. • 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...

VIT028x6U1000y000 Signal Characteristics — Geographical Address and Monitoring The geographical address and monitors tables are applicable over the full input/output operational range. GA0*, GA1*, GA2*, GA3*, GA4*, GAP*: Geographical Address • The GA0* thru GA4* pins sets the I2C™ address of the power supply. The GAP* bit provides odd parity protection over the GA[4:0]* bits. The sum of all the grounded geographical address pins, GA[4:0]* and GAP* must be odd. Global address is set at start up and cannot be changed without a power cycle. • Each of the geographical lines has an internal...

VIT028x6U1000y000 Application Characteristics All of the following plots are at nominal line and 1000W aggregate load unless otherwise noted. VS1, VS2 ENABLE* grounded Figure 3 — Response time from VIN applied to outputs available; 28VIN, INHIBIT* floating, ENABLE* grounded, no load VITA 62 DC-DC Converter Page 10 of 31 ENABLE* grounded Figure 2 — Response time from ENABLE* pin grounded to outputs available; 28VIN, INHIBIT* floating, ENABLE* grounded, full load Figure 1 — Response time from ENABLE* pin grounded to outputs available; 28VIN, INHIBIT* floating, ENABLE* grounded, no load