TPS61022: TPS61022

Part Number: TPS61022

Tool/software:

I am using TPS61022 in my design, My output power requirement is 4V 2A for input voltage range 1.8V to 3.7V_DC. but when I am testing the circuit it works for only 500mA Load for 1A Load current output voltage drop when input voltage is below 3V_DC & above 1A Laod it is not working at all can someone tell me what happen. I am attaching the schematic file for the same.

  • Hi, 

    Can you change R35 to 100kohm, and R34 to 560kohm? And short Q3, remove C3 and SJ6 at first. Also remove DC21. For layout, pls refer to below one. Check the waveform to see if there are any signs of unstable switching.

    Aurora