Hi, I am working on a project which will have a battery voltage of 4.5 - 6 volts supply over the temperature range of -40 to 60 C, and need an output voltage of 3.3 volts and 4 - 6 amps. For this project, I have started with the pre-made voltage regulator - above.
The load will be within 2 inches of the driver, and ripple voltage is not that critical, (200-300mv) so I am planning to set it up with:
a) Inhibit - not used, b) Track - not used, c) Turbo Trans - used with 1.21 K ohm resistor d) Capacitors, 1 each United Chemicon polymer cap, 16 volts, 330uf, apxa160ara331mjcog on both the input and output, e) remote sense - not used, f) Smart sync - not used - wired to grd. g) voltage set resistor 1.21 k ohm
The caps were selected for their temp range stability, and the possibility that we might also want to use this setup at 12 volts later (TBD). The two caps are identical for part stocking reasons, same reasoning on the resistors for V set and Rtt.
a) There is a reasonable chance that the customers might accidentally miswire the Vbat to the system (reverse the connections) for up to 1 min, but not longer. Is there any chance that this driver can withstand this accidental reverse voltage bias for 1 minute, or are we forced to add reverse protection to the circuit?
b) Do you see any obvious problems with the setup I have outlined?
c) The WAZ version indicates tolerance to soldering of up to 260C compared to the 230C version. Is there any downside of using the higher temperature version? In other words, I am assuming it does not REQUIRE to be soldered on at a higher temperature - correct ?
d) If we use a wiper pot for V set, are there any issues with this as long as it meets the other specs?
By the way, it would be handy if you come out with a version which can handle up to 16 volts so I can use it in an automotive application, even if it can only support 4 amps. It would also be handy if I could just buy a similar product to this with everything done and integrated over the full temperature range.
Thank you for your support.
Hi, forgot to ask - if it needs reverse protection, do I need to protect both Vin and ground?
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