Hardware
2.1.3 Tip and Barrel Measurement
Figure 2-1
illustrates the tip and barrel measurement for switching node waveform on the TP8 with TP1.
2.1.4 List of Test Points, Jumpers, and Connectors
Table 2-1
lists the test point functions.
Test
Type
Point
BOOT1
T-H Loop
FB1
T-H Loop
TP1
SMB
TP2
SMB
TP3
T-H Loop
TP4
T-H Loop
TP5
T-H Loop
TP6
T-H Loop
TP7
T-H Loop
TP8
T-H Loop
TP9
T-H Loop
TP10
T-H Loop
TP11
T-H Loop
TP12
T-H Loop
TP13
T-H Loop
TP14
T-H Loop
TP15
T-H Loop
TP16
T-H Loop
TP17
SMB
TP18
T-H Loop
TP19
T-H Loop
VCC1
T-H Loop
VOSNS1
T-H Loop
4
TPS546C25EVM-1PH 4V to 18V, 35A, Buck Converter with PMBus and
Telemetry Evaluation Module
Metal Ground
Barrel
Probe
Tip
Figure 2-1. Tip and Barrel Measurement
Table 2-1. Test Point Functions
Name
BOOT1
Test point connection to the BOOT pin
FB1
Test point connection to the VSEL/FB pin
SW
SMB connection to the SW node
VOUT
SMB connection to the V
PVIN_SNS
Kelvin sense connection to the PVIN
VO_EFF
Connection for measuring efficiency
BODE-CH2
VOUT and BODE-CH2
PGND_SNS
Kelvin sense connection to the PGND
VDRV
Connection to the VDRV pin
SW
Test point connection to the SW pin
VO_REG
Connection for measuring regulation
EXTBIAS
External Bias measurement point for the VDRV
PG
Test point connection to the PGOOD pin
EN
Test point connection to the EN pin
BODE-CH1
BODE-CH1
GND_REG
Connection for measuring regulation
ALERT
Connection to the SMB_ALERT
PGND_EFF
Kelvin connection to the GND for efficiency measurement
EN
SMB connection for EN signal on J6
AGND
Connection to AGND pour and AGND pin
GOSNS
Connection to the GOSNS pin
VCC1
Measurement point for the VCC
VOSNS1
Connection to the VOSNS1 pin
Copyright © 2024 Texas Instruments Incorporated
Description
node
out
www.ti.com
SLUUCZ1 – JULY 2024
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