Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.
Hi Ziad,
When the EN is pulled down to disable the TPS61391, as my measurement on EVM, the total shut down current from the Vin supply is 16μA (7.5μA caused by the feedback resistors and the other major ones come from the input capacitor).
That…
Part Number: TPS61391 Tool/software: Hello,
I'm looking into an application based on this supply, and I was hoping to exploit the monitor and protection features to increase the safety of our application. The idea is to supply the application via the…
Hi Teritama,
As my understanding, when both the TPS61391 and TPS7A4101 are disabled, the IN and OUT of the TPS7A4101 will be isolated, and the TPS61391 output energy will be stored at the output caps, and the TPS61391 Vout gradually decrease to 0 since the…
Hi Adelson,
The basic equations are (1) and (2) from the application report. There is just a little change, shown below for your reference.
Regards
Lei
Part Number: TPS61391 Tool/software: We are trying to improve a design with the requirement of creating a high-voltage source (50V) from a lipo-battery (Vin 3 to 5V), with the possibility of sourcing up to 10mA from the high-voltage source.
The current…
Part Number: TPS61391 Hi team,
Our customer is designing this device for phantom supply in below condition.
Vin：5V
Vout：49.5V
Iout：0.8mA~6.0mA(max(short) 14mA)
Ilim：20mA(Rshort=5.1kohm)
In this case, Should we connect MONIN pin to VOUT through filter…
Part Number: TPS61391 Hello Team,
A design requires a voltage of ±80V to power an amplifier. Looking at the TPS61391 datasheet and EVM, it seems this part will work.
If I'm using the EVM as reference and outputting ±80V, what's the maximum output…
Part Number: TPS61391 Hi there,
The datasheet mentions the "Quiescent current into VOUT pin". What do you mean by VOUT pin? From the IC pinout, I do not see any VOUT pin.
One more thing: "Choose RDOWN to be approximately 10 kΩ. Slightly increasing…
Part Number: TPS61391 Other Parts Discussed in Thread: TPS61376 , TPS61390 Does the spec for I_LIM_SW [800, 1000, 1200] mA mean that the TPS61391 internally limits the inductor current to 1000 mA (+/- 200), or that the application design must not exceed…
Part Number: TPS61391 Other Parts Discussed in Thread: TPS61390 , Hi,
TPS61391 has current mirror bias current spec in EC table like TPS61390. But it doesn't have any detailed description on MON1 & MON2 output current equation. Does the output current of…
