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Part Number: TPS25927
Accodring to the datasheet of TPS25927, it has Reverse Current Blocking Support. I check the function block diagram, it doesn't show back to back MOSFET on the chip.
Since I need choose a load switch with back to back reverse current protection. May I know how does the working model of TPS25972? Thanks.
Can you please let us know your application requirements to suggest appropriate device.
what is the end equipment and what levels of protection do your system need?
voltage and current requirements of your system?
TPS25927 device support reverse current blocking through an external N-FET as shown below. If you are looking for integrated back-to-back FET configuration please look at TPS25940, TPS25942 devices.
To find the latest information on Power Switches, Visit www.ti.com/powerswitch
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In reply to Rakesh:
TPS25940 is what I need, Thanks.
I have a similar question regarding the TPS25927 for a customer application. It looks to me with the TPS25927, without the external BFET, current can still flow from the output to the input through the internal diode (will this cause any problems)? Another question is can the BFET pin be used to drive two external FETs back to back (customer is looking for lower RDs_on FETs vs. what's provided internally)?
In reply to Chuchen Wang:
Thanks for the quick response. This is for battery powered application so lower RDs_on is important. To clarify, the customer cannot drive two FETs back to back via BFET pin instead of using the internal FET?
Customer feedback is that they've confirmed no problem using the TPS25927. In the reverse direction, they will not block using the part. When reverse current flows, the TPS25927 will be on. No voltage drops approaching diode voltage are expected. Thanks for your support. I will close the thread.
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