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.