TPS54201: alternative for higher power?

Hi John,

So you are finding a constant-current driver for driving TEC with Iout = 10A. Right?

If this is the case, then what's your VIN and VOUT requirement? What does 12-24VDC stand for?

Best Regards,

Steven

Steven,

I would like to drive a part such as a TEC 12710, which requires 12 VDC at 10 A. I would like to heat and cool with the same device, so it would be great if the driver can switch polarity.

Thanks,

John

HI John,

What is your VIN range?

Best Regards,

Steven

12 VDC.

Hi John,

Then what is your VOUT range?

Sorry but I am not familiar with TEC.

BR, Steven

Hi Steven,

If you are allowed to use google, you can quickly see what TEC 12710 is. A similar one is https://www.mouser.com/datasheet/2/988/datasheet_PCX7_16_F1_4040_TA_RT_W6-2298277.pdf

Looking at the app note again, I see they used an unspecified "V ext" as an input to the converter. It seems all they were interested in was getting 1 A to the Peltier. In my case, I want something like 5 to 10 A against about 2.5 Ohms, so the V out should be about 12 to 25 V. I'm not sure what input V will be required to do this.

I wish there was something that did not involve PWM at all as I have some sensitive equipment being thermostated.

John

Hi John,

For a constant current buck controller that supports 5-10A @ 12-25V output, you can take a look at TPS92640. It can support analog dimming (output current adjustment) which does not involve PWM.

BR, Steven