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Hello,
I have a question about TPS259231.
My customer is checking the operation by the mounting to a prototype.
Please give me comment about the following behavior.
■The condition of TPS259231
VIN-pin : 6.0V input from external power supply
ILIM-pin : 45.3kohm (current limit setting is 2.1A(typ))
OUT-pin : Load electric current adjustment by the electronic load connection
dV/dT-pin : open
BFET-pin : open
■About the waveform of output voltage and output current
(Ch1: Input voltage, Ch2: Output voltage, Ch4: Output current)
↑ Load electric current setting by the electronic load: 1.5A
↑ Load electric current setting by the electronic load: 2.5A
↑ Load electric current setting by the electronic load: 4.0A
When the settings of load electric current are 2.5A and 4.0A, the following behavior is observed.
(When the setting of load electric current is 1.5A, the following behavior is not observed.)
・Output current : Cyclic ON/OFF behavior
Is it repetition behavior of the output OFF → return by the current limit operation ?
・Output voltage :
After output voltage dropped by increasing electric current, output voltage becomes minus voltage.
Are these behavior correct?
Please teach me the reason about these behavior.
Regards,
Dice-K