Texas Instruments TPS51220A EVM-476, User Manual

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5.3 List of Test Points
Table 5-1. Test Point Functions Found on the TPS51220A EVM-476
TEST POINT NAME DESCRIPTION
TP1 VIN Measurement point for input voltage with respect to TP18
TP2 VOUT1 Measurement point for output 1 voltage with respect to TP7
TP3 VOUT2 Measurement point for output 2 voltage with respect to TP8
TP4 SW1 Output 1 switch node with respect to TP20
TP5 VREG5 5-V/100-mA output, enabled EN is high, use switch S3
TP6 SW2 Output 2 switch node with respect to TP21
TP7 GND1 Ground reference for VOUT1
TP8 GND2 Ground reference for VOUT2
TP9 VREG3 3.3-V/10-mA output should be present when input voltage is applied to EVM.
TP10 EN1 Output 1 enable signal, will be high when output is enabled via switch S1
TP11 EN2 Output 2 enable signal, will be high when output is enabled via switch S2
TP12 PG1 Output 1 power good signal, will be high when output is in regulation
TP13 PG2 Output 2 power good signal, will be high when output is in regulation
TP14 EN 5-V and 2-V reference enable signal, high when EVM is enabled with switch S3
TP15 VREF2 2-V internal reference, enabled when EN is high, use switch S3
TP16 – Not used
TP17 – Not used
TP18 GNDIN Ground reference for VIN
TP19 GNDS General ground
TP20 GND Ground reference for SW1
TP21 GND Ground reference for SW2
TP22 GND General ground
TP23 GND General ground
TP24 SYNC Not used
www.ti.com Test Setup
SLUU381B – SEPTEMBER 2009 – REVISED FEBRUARY 2022
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