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[LTM4671] Questions about the connectivity of Tsense signals for parallel channels application.

Hi support team.

For parallel channels application. How to connect Tsense0/3 pins to the temperature monitor controller? 

The diode connected NPN transistor across the TSENSEn+ and pin and TSENSEn- pins can be used to monitor the internal temperature of the LTM4671 channel 0 and 3.

If I use 2+2 (CH0+CH3, CH1+CH2) channels parallel mode in my design, for CH0+CH1 Vout, there are two pairs of Tsense signals (Tsense0+/- and Tsense0+/-),which one could be used to detect the internal temperature of combined channel?

Thanks very much.

  • HI Patsburg, the Tsense0/3 controller connection can refer to the demo board DC2659A. If using CH0+CH3, you can use either one or both to detect the internal temperature. The temperature sensor is independent. Tsense0 is used to monitor CH0, Tsense3 is used to monitor CH3. They should be the same when CH0 and CH3 are paralleled.

  • Thanks for your reply. It is helpful. I just found there were so many typo above, but I think you understook what I asked. :) Anyway, I correct the question here:

    If I use 2+2 (CH0+CH3, CH1+CH2) channels parallel mode in my design, for CH0+CH3 Vout, there are two pairs of Tsense signals (Tsense0+/- and Tsense3+/-),which one could be used to detect the internal temperature of combined rail.