2.4.5.1 Isolated Power Supply

The user must connect the external dc supplies 15 V and –15 V on the four-pin terminal block J14 to power the isolated section of the TIDA-00454 board (see Figure 19). The power supply is protected for reverse polarity and overvoltage.

Figure 19. Input Connection for 15 V and –15 V

The DAC8563 requires a 5.5-V supply voltage. The TPS7A4201 LDO is used to step-down 15 V to 5.5 V.

The following Figure 20 shows the LDO circuit diagram.

Figure 20. Regulator for DAC 5.5 V