SLOA247C July 2017 – March 2019 RF430FRL152H , RF430FRL153H , RF430FRL154H
Three sources are available for RF energy harvesting: VDDSW/VDDR, VDDH, and VDD2X.
Table 4 lists test values that were measured using the TRF7970AEVM with a 5-V power supply.
The current that can be harvested from the RF430FRL15xH depends on the distance from the reader to the antenna.
| Source | Pin | Voltage (V) | Current (µA) |
|---|---|---|---|
| VDDSW/VDDR | 3 | 1.5 | 450(2) |
| VDDH(3) | 23 | 1.86 | 600(2) |
| VDD2X | 7 | 2.9 | 150(1) |
| VDD2X | 7 | 2.7 | 90(2) |
The voltage doubler is automatically turned on during FRAM access. The doubler can be set to always on by setting RFPMMCTL0 -> EN_V_DOUB.