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TPS54394 PG output

1 month ago 90
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Description

A simple simulation of the PG pins on the TPS54394 SMPS from TI.

 

There is a TI PSpice model for the TPS54394:  

 

https://www.ti.com/lit/zip/slvm613

 

It should run ok in LTspice as used on EasyEDA but:

 

1) A Spice Symbol will need to be created for it and;

2) It may found that the simulation will hit the EasyEDA run time/resources limit before the simulation runs long enough to show a useful elapsed time from start up.

 

It may therefore be better running a simulation on a locally installed copy of LTspice or on the PSpice tools that TI supply.

 

If however all that is required is to study a design for a LED driver from the PG pin then this simulation is adequate.

Documents

Sheet_1

BOM

ID Name Designator Quantity
1 DLEDR D1,D2,D3 3
2 BSS123 M1 1
3 2N2222 Q1 1
4 1K R1 1
5 100k R2,R4 2
6 1k R3,R5 2
7 VOLTAGE_CONTROLLED_SWITCH S1,S2,S3 3
8 PULSE(1 0 50m 1u 1u 100m 200m) V1 1
9 5.5 V2 1

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