SLUUBH3A November 2016 – February 2022 TPS546C20A
The TPS546C20AEVM2-746 EVM includes a 49.9-Ω series resistor in the feedback loop for VOUT . The resistor is accessible at the test points TP14 / TP15 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 6-1.
Test Point | Node Name | Description | Comment |
---|---|---|---|
TP14 | CHA1 | Input to feedback divider of VOUT | The amplitude of the perturbation at this node should be limited to less than 30 mV |
TP15 | CHB1 | Resulting output of VOUT | Bode can be measured by a network analyzer with a CH-B/CH-A configuration |
Measure only one output at a time, with the following procedure: