TPS2110A: Power & Load switch needed

Vikas Thukuntla75

Part Number: TPS2110A
Other Parts Discussed in Thread: TPS22953, TPS22942

Hi,

I have two input power sources (Vin and Vprog) and I want them to be controlled as per the below logic to the two outputs (Vout and Vp). Vin and Vprog have voltage ranges of 2V - 5V with currents of 200mA max.

Vin	Vprog	Vout	Vp
0	0	0 or Vin	Vin
0	1	0	Vprog
1	0	Vin	Vin
1	1	0	Vprog

For the above Vp output, I am pursuing TPS2110A. However I am not able to get any Load switch or so for Vout output. All the Load switches seem to have Active High enable, or BGA package. Can you suggest any suitable part for Vout? If not, kindly suggest a single suitable part for the combined logic of Vout and Vp outputs. I do not want any of the parts to be of BGA package.

Regards,

Vikas Chandra Rao.

over 6 years ago

0 Rakesh over 6 years ago

TI__Guru** 103806 points

Hi Vikas,

Thanks for reaching out!.
I have informed the appropriate engineer. He will get back to you soon. Please expect some delay due to holidays and sorry for the inconvenience.

Best Regards,
Rakesh

0 Aleksandras_Kaknevicius over 6 years ago

TI__Genius 15740 points

Hi Vikas,

We do not have any non-BGA devices with an active low enable. Can you use an inverter for one of the switches, such as in this power muxing app note? If so, then you can use a configuration similar to the TPS22953 one shown in the app note.

Thanks,

Alek Kaknevicius

0 Vikas Thukuntla75 over 6 years ago in reply to Aleksandras_Kaknevicius

Intellectual 520 points

Hi Alek,

I am thinking of pursuing TPS22942 for my requirement of active low enable Load switch for Vout. Kindly confirm that this part is fine for my usage.

Regards,
Vikas Chandra Rao.

0 Aleksandras_Kaknevicius over 6 years ago in reply to Vikas Thukuntla75

TI__Genius 15740 points

Hi Vikas,

The only issue you may find is that the TPS22942 does not block reverse current when it is turned off. Therefore, if you had a higher output voltage than input voltage, current would flow from VOUT to VIN through the body diode. If the TPS22942 is controlling your higher voltage supply (for muxing) then this would not be a concern as long as the other load switch had reverse current blocking.

Thanks,

Alek Kaknevicius

0 Vikas Thukuntla75 over 6 years ago in reply to Aleksandras_Kaknevicius

Intellectual 520 points

Hi Alek,

Thanks for confirming about TPS22942.

Regards,
Vikas Chandra Rao.

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TPS2110A: Power & Load switch needed