GaN Single Stage Isolated Converters
Overview
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.
28V GaN, Single-Stage, Isolated DC-DC Converter
The Frontgrade Single Stage DC-DC Converter is an efficient isolated step-down regulator rated at 50-72 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.
| Part Number | Vin (V) | Vout (V) | Pout (W) MAX | Iout (A) MAX | Efficiency (typ) (%) |
|---|---|---|---|---|---|
| SCD51028080 | 20-38 | 0.7-0.8 | 50* | 54.0 | 89 |
| SCD51028100 | 20-38 | 0.8-1.0 | 50* | 50.0 | 91 |
| SCD51028120 | 20-38 | 1.0-1.2 | 50* | 41.0 | 91 |
| SCD51028180 | 20-38 | 1.5-1.8 | 64* | 35.0 | 91 |
| SCD51028330 | 20-38 | 2.5-3.3 | 75* | 22.0 | 92 |
| SCD51028500 | 20-38 | 4.0-5.0 | 60* | 12.00 | 92 |
| SCD51028700 | 20-38 | 5.0-7.0 | 50* | 7.00 | 93 |
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