SLVU399B August   2010  – May 2021 TPS65251

 

  1.   Trademarks
  2. 1Introduction
  3. 2Background
  4. 3Schematic
  5. 4Placement (Top Layer)
  6. 5Bench Test Setup Conditions
    1. 5.1 Headers Description and Jumper Placement
    2. 5.2 Jumpers
    3. 5.3 Test Points and Placement
  7. 6Power-Up Procedure
  8. 7Bill of Materials
  9. 8Revision History

5.3 Test Points and Placement

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.

Table 5-2 Test Points and Placement
TEST
POINT		NAMESIGNALCOLORCOMMENT
TP1GNDGroundBlack
TP2GNDGroundBlack
TP3AGNDGroundNot fitted. Only Via.
TP4VOUT3Buck3 outputWhite
TP5VOUT1Buck1 outputWhite
TP8FB3AInput for gain-phase measurement Buck3WhiteNormally not used
TP10FB1AInput for gain-phase measurement Buck1WhiteNormally not used
TP12VOUT2Buck2 outputWhiteNormally not used
TP14GNDGroundBlack
TP15GNDGroundBlack
TP16FB2AInput for gain-phase measurement Buck2WhiteNormally not used
TP27PGOODPower Good (open drain connected to Buck1 output)White
TP28V7VV7V pin (internal rail)White
TP29V3VV3V pin (internal rail)White
TP33VINInput supplyWhite