Download RAD-Hard Non-Isolated Point of Load (POL) Voltage Regulators

RAD-Hard Non-Isolated Point of
Load (POL) Voltage Regulators
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DATA SHEETS
The SBB series devices are designed to maximize
efficiency in space applications including satellites
requiring long mission life up to 15 years or 100Krads of
total ionizing does (TID). The SBB series delivers high
efficiency of up to 89%, allowing the use of a smaller heatsink
to reduce overall size and weight of the system. The new
devices suitable for designs using new digital signal
processors, ASIC and FPGA technologies feature 30W
output power or output current of 14A.
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Features
Advantages
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• With high efficiency performance well suited to the high power
requirements of two-stage distributed power architecture design
applications, the SBB series addresses the ongoing need to reduce size
and weight, as well as the increasing needs of FPGA and other digital
circuitries for increased bandwidth, data processing speed and the higher
processing power requirements of digital electronics onboard spacecraft.
• Weighing less than 60 grams in a compact form factor, other key features
of the new devices include 4.5 to 5.5V input range, SEE LET (Heavy Ions)
greater than 82 MeV.cm2/mg, under voltage lockout (UVLO), remote
sense compensation, adjustable output voltage, power OK (POL) status
and remote on and off control.
• A fixed frequency non-isolated synchronous buck regulator topology is
included to maximize efficiency. An internal input EMI filter is included to
minimize the switching ripple currents. No external filter components are
required for typical design applications.
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4.5 to 5.5V input range
30W output or up to 14A operating current without
power de-rating
Total Ionization Dose > 100K Rad (Si)
SEE LET (Heavy Ions) > 82 MeV.cm 2/mg
Integrated input and output filters for low noise
performance and stand-alone operations
Standard output voltages include 1.0, 1.2, 1.5, 1.8, 2.5
and 3.3V
Remote sense compensation
Remote on/off command
High efficiency up to 89%
Adjustable output voltage for precise output setting
Low weight, < 60 grams
Compact form factor with low profile package, 2.4” x
2.0” x 0.335”H, including I/O pins and mounting tabs
October 2010