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TPS22910A: Power gated ultra low power CC13xx node design

Part Number: TPS22910A
Other Parts Discussed in Thread: TIDA-00374, TPL5110, , TS5A3160, TPS22916

Hi,

Referring to TIDA-00374 - looks like a good solution. Though since this a bit dated (May 2016) wondering if there are higher performing replacement/ upgraded devices  you may suggest 
(the switch and timer) resulting in even better battery life performance for CC13xx based low duty cycle wireless sensor application. i.e. either shutting off power to or waking up CC13xx 
from shutdown mode.

Couple of  related sub-questions -

1) I am using TPS22910AYZVR for battery (reverse polarity) protection, can I use its enable (ON, B2) input driven from TPL5110 output? 

2) Since TS5A3160 offers much lower leakage current compared to TPS22910A. Is there any (low leakage) switch with built in reverse polarity protection? i.e. combining best from both 
    devices in one.

Please advise. Thanks.

  • Hi, 

    SmartEnrg said:

    1) I am using TPS22910AYZVR for battery (reverse polarity) protection, can I use its enable (ON, B2) input driven from TPL5110 output? 

    Yes, this is OK. 

    SmartEnrg said:
    2) Since TS5A3160 offers much lower leakage current compared to TPS22910A. Is there any (low leakage) switch with built in reverse polarity protection? i.e. combining best from both 

    TS5A3160 / analog switches in general are not power devices. This one you mentioned can only support 200mA max. TPS22910A can do 2A. 

    I would recommend to look at TPS22916, it has the lowest shutdown current among our switches with reverse current blocking features. 

    Note that  TPS22910A has P-CH fet while TPS22916 has n-ch fet. 

    Please let me know if you have any additional questions. If this has answered all your questions, please let me know by pressing the green button.

    Best

    Dimitri