SLUAAN0 December 2022 TPS62933F
Figure 3-1 shows the design example with the typical flybuck circuit, using the synchronous buck regulator TPS62933F from TI.
Table 3-1 lists the design specification.
| Design Parameter | Example Value |
|---|---|
| Input voltage range (VIN) | 10 V to 24 V |
| Primary output voltage (VOUT1) | 5 V |
| Positive isolated output voltage (VOUT2) | 12 V |
| Negative isolated output voltage (VOUT3) | –12 V |
| Primary load current (IOUT1) | 1 A |
| Positive isolated load current (IOUT2) | 0.2 A |
| Negative isolated load current (IOUT3) | 0.2 A |
| Switching frequency (fsw) | 500 kHz |
In this example, one primary output and two isolated outputs are obtained. We will begin with the buck converter component calculations and qualify the steps for the isolated configuration.