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TPS61199: can't normal output for tps61199

Part Number: TPS61199

hi ti member,

  we used your TPS61199 to driver LCD display. now there is a bug.  It can't output a stable 35v voltage. We've tried to change output Cap to 33uF and R2 to 162kohm and C3 to 47nF and R4 to 49.9kohm, but it still doesn't work normal. as below: ps help. thanks

schmatic and issue view.docx