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SBB501S Datasheet(PDF) 1 Page - International Rectifier |
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SBB501S Datasheet(HTML) 1 Page - International Rectifier |
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1 / 11 page  11/28/12 www.irf.com 1 HIGH RELIABILITY CLASS K HYBRID, RADIATION HARDENED, NON-ISOLATED POINT OF LOAD (POL) VOLTAGE REGULATOR SBB SERIES Description The SBB Series point of load (POL) DC to DC voltage regulators are high reliability hermetically sealed thick film hybrids designed to provide a single regulated DC output from a DC voltage source. The output power rating is 14W to 30W depending on output voltage, with maximum current rating of 14A. The POLs are class K qualified per MIL-PRF-38534. These products are designed to operate continuously on board a space craft up to the rated power output without power derating for case temperature of 85°C. The POLs are suitable for harsh radiation environments normally encountered in the geo-synchronous orbit (GEO), medium earth orbit (MEO), low earth orbit (LEO), deep space, and for other challenging radiation design applications. The SBB POL is a non isolated synchronous buck regulator. It incorporates IR’s heritage- rich components and circuit design library for long term reliability expected of system designs with a mission life of up to 18 years or more. The SBB Series of POLs operate from a DC input power source with the voltage range of 4.5V to 5.5V. It converts DC input voltage down to a fixed and highly stable DC output. The standard voltage outputs are 1.0V, 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. The output is adjustable with the addition of an external resistor. The output adjustment range is approximately ±10% of a nominal output voltage. Also included is remote sensing capability to compensate for voltage drops in the output lines. This feature, in combination with the output adjustment capability, enables an output voltage of a POL to be accurately set as needed. Single Output With its excellent efficiency performance, SBB POLs are ideal as the point of load regulators for the distributed power architecture (DPA) design systems. Other key benefits include excellent dynamic load response, precise voltage setting, remote output voltage sensing and synchronization. Features n Total dose >100K Rads (Si) n SEE hardness rated with LET > 82 MeV-cm2/mg n Operates from 4.5V to 5.5V DC supply n Fixed output voltage: 1V, 1.2V, 1.5V, 1.8V, 2.5V and 3.3V are standards n Output power up to 30W or 14A maximum without de-rating n High efficiency to 89% n Remote sense compensation n Fixed 400 KHz operating frequency n Output adjustable to ±10% of nominal output with an external resistor n Enable function pin for remote on/off control n Input undervoltage and output under voltage protection n Overload and short circuit protection n Low noise with integrated input and output filters n No external filter capacitors required n Soft start n Under voltage lockout (UVLO) n Synchronization n Output Status Telemetry(POK) n -55 to +85°C operating case temperature without output power derating n MIL-PRF-38534 element evaluated components n Custom versions available n Derating per MIL-STD-1547 for space flight n MTBF > 2.8 million hours for space flight environments n Standard Microcircuit Drawings (SMDs) Available PD-97563B |
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