TPS25942L: DMODE, PGOOD, and IMON-pins

Takashi Yamaguchi

Part Number: TPS25942L

Hi Team,

My customer is considering to use the TPS25942L. Could you support the following questions?

Customer doesn't use the Diode Mode, Power Good, and Current Monitoring. In this case, how should these pins be treated(e.g. open or tied to GND)?

1. DMODE-pin(Diode Mode): Open?

2. PGOOD-pin(Power Good) : open or tied to ground

3. IMON-pin(Current Monitoring) : Open?

I also received another question about reverse current protection.

Does this protection work at the condition that Vin is above 2.7V(VIn>=2.7V)? (When the Vin is below 2.7V, the reverse current protection doesn't work?)

Regards,

Yamaguchi

over 4 years ago

0 Takashi Yamaguchi over 4 years ago

TI__Genius 13110 points

Hi Team,

I received additional questions from the customer.

Could you also tell me how to treat PGTH-pin when they don't use this pin?

4. PGTH-pin : Open or tied to ground?

The customer now intends to treat each pin as follows. Are these pin connection below ok?

1. DMODE-pin(Diode Mode): Open

2. PGOOD-pin(Power Good) : tied to ground

3. IMON-pin(Current Monitoring) : OPEN?

4. PGTH-pin : tied to ground

OVP : tied to ground

FLT : OPEN

Regards,

Yamaguchi

0 Rakesh over 4 years ago in reply to Takashi Yamaguchi

TI__Guru** 105361 points

Hi Yamaguchi,

DMODE, IMON and FLT pins can be left OPEN

PGOOD, PGTH and OVP pins can be connected to GND

Does this protection work at the condition that Vin is above 2.7V(VIn>=2.7V)? (When the Vin is below 2.7V, the reverse current protection doesn't work?)

Yes, the back-to-back connected MOSFET configuration provides reverse current protection even for Vin <2.7V

Best Regards, Rakesh

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TPS25942L: DMODE, PGOOD, and IMON-pins