SLVU399B August 2010 – May 2021 TPS65251
Buck converter outputs are red and have a label for easy location. Close to any of these test points there are black ground test points to allow for DVM measurement or to use a metal exposed scope probe to reduce common mode noise measurements. All test points are described in Table 5-2.
| TEST POINT | NAME | SIGNAL | COLOR | COMMENT |
|---|---|---|---|---|
| TP1 | GND | Ground | Black | |
| TP2 | GND | Ground | Black | |
| TP3 | AGND | Ground | Not fitted. Only Via. | |
| TP4 | VOUT3 | Buck3 output | White | |
| TP5 | VOUT1 | Buck1 output | White | |
| TP8 | FB3A | Input for gain-phase measurement Buck3 | White | Normally not used |
| TP10 | FB1A | Input for gain-phase measurement Buck1 | White | Normally not used |
| TP12 | VOUT2 | Buck2 output | White | Normally not used |
| TP14 | GND | Ground | Black | |
| TP15 | GND | Ground | Black | |
| TP16 | FB2A | Input for gain-phase measurement Buck2 | White | Normally not used |
| TP27 | PGOOD | Power Good (open drain connected to Buck1 output) | White | |
| TP28 | V7V | V7V pin (internal rail) | White | |
| TP29 | V3V | V3V pin (internal rail) | White | |
| TP33 | VIN | Input supply | White |