28-Volt Single Stage Isolated DC-DC Converter 51028XXX Series
| Part Number | Switching Frequency | Efficiency | Sel Immune | Package | Voltage In | Voltage Out | Screening Level |
|---|---|---|---|---|---|---|---|
| 51028500-S | 433 kHz | 93% | 60 MeV-cm^2/mg | 61-lead PCB Module | 21 to 38 VDC | 5 VDC | MIL-STD-883 Tested |
By converting power straight from the power bus to the point of load, the new GaN single-stage converters operate easily within the increasingly stringent voltage tolerances of today’s leading-edge processing devices.
This includes deep-submicron ASICs and FPGAs used in software-defined payloads that can be reprogrammed in-orbit to extend the mission life of space applications.
The 28V radiation-tolerant converters are also the first satellite single stage power supplies to incorporate gallium-nitride (GaN) FET technology. These GaN-based converters provide customers with a unique, fully-tested, off-the-shelf power conversion solution.
The move to GaN enables higher performance and switching frequencies, thereby improving response time to changing load currents compared to silicon-based, DC-DC converters. These new converters can also be used in parallel for higher-power applications.
The Frontgrade Single Stage DC-DC Converter is an efficient isolated step-down regulator rated at 50 Watts. Output voltage remote sense provides accurate point of load voltage regulation. The converter design is a single ended forward converter with secondary synchronous rectification.