The DC2906A is a demo circuit for the LT8302, an isolated triple output flyback converter. It can output 5V, ±15V power. The input voltage range is 4.5V to 28V, and the secondary side output voltages are regulated by sampling the primary side flyback waveform. It can generate three isolated output rails: 5V at 400mA+ and ±15V at 100mA+. The line and load regulation (combined) is within ±10%. DC2906A showcases the high power density, high efficiency and good regulation made possible by the LT8302's high level of integration.
The document provides a quick start procedure for evaluating the performance of the DC2906A demonstration circuit. This circuit showcases the LT8302 integrated isolated flyback converter, generating three regulated outputs: 5V at 400mA+, +15V at 100mA+, and -15V at 100mA+. The guide details how to connect power supplies and loads to the board terminals.
| Input Voltage Range | 4.5V to 28V |
|---|---|
| Output 1 (VO01) | 5V at 400mA+ |
| Output 2 (VO2) | -15V at 100mA+ |
| Output 3 (VO3) | 15V at 100mA+ |
| Line and Load Regulation | +/- 10% |
| Efficiency at Vin=5V Full Load | 82.8% |
| Efficiency at Vin=12V Full Load | 86.5% |
The LT8302 requires very small minimum load to maintain good output voltage regulation.
Measure the ripple by touching the probe tip directly across the Vin and -Vin, or output side terminals.