X-Drive VS BlitzBuck

[justinjja]

I am considering one of these for a TEC,
~6.5V @ 2A from 2 lithium cells

What is the max vout of these drivers?
Which one has the lowest Dropout?

Will the new BlitzBuck V4 use the same IC as the V3? / would one work better than the other?

EDIT:
Also does anyone know what a good PWM frequency for a TEC would be?
If I have room, I might just make a 555 cicuit for it...

 

[Wolfman29]

Well, yes, the BlitzBuck V4 uses the same IC as the V3. The max vout of this driver is 10V (I would say 8V though for safety purposes). The BlitzBuck is again, a buck driver, so it technically doesn't "have" drop-out. But, it can only go up to 85% of the input voltage.

 

[justinjja]

Thanks for the info,
Is the blitzbuck Synchronous?
What is the max duty cycle of the IC?

EDIT:
Wait let me guess, 95%?

 

[Wolfman29]

Yes, the BlitzBuck is synchronous. The max duty cycle is about 92%.