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TPS61085T: Please provide a detailed review of the buck section

Aswin S Dharman
Intellectual 350 points
Part Number: TPS61085T

Kindly do a detailed review of the given BOOST circuit .

The choosen components are listed below

IC,REG,BOOST,5V,2.5A,SOT23-5 TPS613222ADBVT Texas Instruments
DIODE,SCHTKY,20V,2A,X3-WLB1406-2 SDM2A20CSP-7 Diodes Incorporated
FIXED,IND,6.8UH,2.45A,105MOHM TH B78108E1682K009
EPCOS - TDK Electronics
RES,0603,5.9K,1%,1/10W,SMD CRCW06035K90FKEA Vishay Dale
RES,0402,18K,OHM,1%,1/10W RK73G1ETTP1802F
KOA Speer Electronics, Inc.
RES,0805,27K,1%,1/8W RMCF0805FT27K0
Stackpole Electronics Inc

  • 0
    TI__Expert 4760 points

    Hi Aswin,

    As I replied in your previous thread, the Fb voltage is 1.238V and R2 and R4 value should be recalculated. The section 8.2.2.4 gives the equation for calculating Ccomp and R comp as well as standard values. Using standard values is acceptable.

     For load capability review, please let me know the output current range. And please close the previous thread, thank you.