HI
I AM USING THE TPS55340 IN ORDER TO BOOST VOLTAGE FROM 12V TO 14 VOLTS
THE PROBLEM IS THAT THE CIRCUIT DOESNT HOLD THE LOAD CURRENT .
THE CIRCUIT ACCORDING TO THE CALCTOOL SHOULD GIVE A 2.5 AMP THE
LOAD ACTUALY IS 1.9 AMPS,AND AFTER 2 MINUTES THE DC/DC STOP WORKING.
I ATACHED THE SCHEM DIAGRAM THAT I AM USING.
REMARK - WHEN THE LOAD IS LOW (0.7AMP) THE OUTPUT WAVE FORM AFTER THE
RECTIFIER DIODE IS STEADY AND THERE IS NO PROBLEM
.WHEN THE LOAD IS HIGH(1.8AMP) THE OUTPUT WAVE SEAM TO
BE NOT STABILYS. AND THERE ARE A BLIMP AT THE OUTPUT VOLTAGE
AND AFTER 2 MINUTES THE DC/DC SHUTS DOWNTPS55340 _ DC_DC.pdf
THE VALUS THAT I AM USING ARE -
L - 3.3UHY
CSS-4.7UF
R FREQ -78.7K
R COM-1K
C COMP - 33NF
CIN - 15UF
CAN YOU ADVISE A SOLUTION TO THE PROBLEM?
THANK U