SLUUC48A February 2020 – February 2022 TPS546B24A
The TPS546B24AEVM-2PH includes a 49.9-Ω series resistor in the feedback loop for VOUT. The resistor is accessible at the test points TP17 and TP18 for loop response analysis. These test points should be used during loop response measurements as the perturbation injecting points for the loop. See the description in Table 6-3.
Test Point | Node Name | Description | Comment |
---|---|---|---|
TP18 | CH_B | Input to feedback divider of VOUT | The amplitude of the perturbation at this node should be limited to less than 30 mV. |
TP17 | CH_A | Resulting output of VOUT | Bode can be measured by a network analyzer with a CH_B/CH_A configuration. |
Measure the loop response with the following procedure: