Other Parts Discussed in Thread: TPS25983
Tool/software:
Dear Specialists,
My customer is evaluating TPS259827 and has questions.
I would be grateful if you could advise.
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After the input power is turned off, the TPS259827's output voltage is approximately 3.5V and the input voltage is approximately 2.6V, resulting in a 0.8V voltage difference.
A current of 120mA flows from Vout to Vin.
Since a Peltier element is connected to the load, it is likely that a voltage is generated when the power is off, causing current to flow from Vout to Vin.
(1) At this time, the TPS259827's "absolute maximum Vout rating: Vin + 0.3V" is exceeded, is there a possibllity of (TPS259827) fail?
(2) Should we use the "TPS25983" which has a backflow prevention function as a countermeasure to prevent backflow from the output?
Or is there a risk that the voltage will rise further and damage the device because there is no reverse current path?
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I appreciate your great help in advance.
Best regards,
Shinichi
