Other Parts Discussed in Thread: LM5171,
Tool/software:
The following are needed for performing WCCA (Worst-Case Circuit Analysis):
- What is the maximum permissible current sense voltage, |VCSA - VCSB|?
- What degrades when |VCSA - VCSB| exceeds 50mV?
- What are the tolerances on Gain of IMON current source versus channel current sense voltage when
- |CSA-CSB| = 50mV, CONFIG = 'Inductor current monitor", VDIR > 2V
- |CSA-CSB| = 50mV, CONFIG = 'Inductor current monitor", VDIR < 1V
- |CSA-CSB| = 10mV, CONFIG = 'Inductor current monitor", VDIR > 2V
- What is the tolerance of the IMON1 and IMON2 DC offset current, which has a nominal value of 50 µA?
- While 150µA happens to the highest value of IMON output current that is talked about, what is the guaranteed minimum current limit of the IMON pin?
- What is the tolerance of GCS_BK1, GCS_BST1, GCS_BK2, and GCS_BST2, which are all nominally 40 V/V?
- What is the maximum output voltage of the Current Sense Amplifier?
- What is the tolerance of the transconductance of the Transconduction Amplifier, around the nominal value of 100 µA/V?
- How much current is the Transconduction Amplifier guaranteed to source and sink, rather than simply the nominal 250 to -250 µA?
- What is the tolerance of the 3.3V limit on the IPK pin, mentioned in datasheet section 6.3.7, which "shuts down the switching of both controllers of the LM5171-Q1"? Will the LM5171 resume switching when IPK falls back below this threshold, or does the IC have to be cycled in some other way to re-start it?
