SB Series
Another key element of the DPA system is the SB series, point of load (POL) class K hybrid voltage regulators. This design platform is a non-isolated buck regulator. It is available in two output power/current levels, 15W/7A (SBA) and 30W/14A (SBB). The output voltages range from 1V to 3.3V for most digital loads and design applications using FPGAs. The modules operate off a 5V DC power source. The efficiencies are in the range of 70% to 90% depending on the output voltage. The SB series also includes many of the functional features required by today’s space applications.

Applications: Digital payloads in geostationary or low earth orbit satellite, launch vehicles, and communication systems, 18 years life in orbit

Key Features:

• Total Dose > 100K rad(Si)
• SEE > 82 MeV·cm2/mg
• Non Isolated synchronous buck regulator
• 4.5 to 5.5V DC input range
• Output power: SBB series up to 30W or 14A max., SBA series up to 15W or 7A max.
• Single output: 1V, 1.5V, 2.5V, and 3.3V
• Output adjustable to ±10% of nominal
• Remote sense
• High efficiency – to 89%
• -55°C to +85°C operating temperature range
• Short circuit and overload protection
• External Inhibit
• External synchronization

SBB Series

SBB Series Block Diagram