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  • TPS61021A: Incorrect output voltage, always 200mV less than input voltage

    Part Number: TPS61021A Hi, I am using the TPS61021A to boost 3V to 3.3V using the circuit below. The power source is 2 AAA batteries in series. The output of the regulator is always 200mV less than the input voltage (i.e., VOUT is 2.8V when VIN is 3V…

  • TPS61021A: Output Current to low

    Part Number: TPS61021A Hello everyone If been using the TI TPS61021A Boost converter to drive an LED with Vin=1.5V Im trying to boost the 1.5V to 3.6V with Iout=1A I have done a hardware test setup and without load I have the 3.6V that I want. When I…

  • TPS61021A: Shutdown current for VIN<1.6V

    TI Thinks Resolved
    Part Number: TPS61021A TPS61021A data sheet provides shutdown current spec with Vin = 1.8V to 3.6V. How does the shutdown current change as VIN drops below 1.8V. Of specific interest is with Vin at 1.6V and 1.5V.
    • Answered

  • TPS61021A: Use as LED driver

    Resolved
    Part Number: TPS61021A Hi Team, Regarding the application note(SLVA925) for a low-voltage LED driver. The input voltage is 1.8V, but is it actually possible to operate at 1.2V? Conditions;. 　Output current: 300mA 　Vf of LED: 2.7V Best Regards, Kenj…
    • Resolved

  • TPS61021A: 100% duty cycle operation

    TI Thinks Resolved
    Part Number: TPS61021A What will be the impact on Boost converter TPS61021A if 4V input is provided for 4V output? If not possible, any other low cost boost converter which can be used instead?
    • Answered

  • TPS61021A: TPS61021ADSGR

    Resolved
    Part Number: TPS61021A Other Parts Discussed in Thread: TPS63021 , I am using a TPS61021ADSGR. I want to connect 2 of them in parallel We have a very low input voltage (1.3v to 1.8v) and need to Boost to 3.3v and again from 3.3v to 5v I want to get more current…
    • Resolved
    • Answered

  • TPS61021A: Low R2

    Resolved
    Part Number: TPS61021A Hello, My customer needs to use resistance of +/-0.1% accuracy for R1 and R2 to get required Vout accuracy. But, for resistance of +/-0.1% accuracy, the selectable resister range is =< 100Kohms. So, to get Vout=3.9V, they selected…
    • Resolved
    • Answered

  • RE: TPS61021A: loop stability analysis

    Resolved
    Hello Wenhao, Thanks for your reply. However the reason we are doing these stability analysis is to make sure the TPS61021A will remain stable during startup with a slew-rate controller (ref here https://e2e.ti.com/support/power-management-group/power-management…
    • Answered

  • RE: TPS61021A: slew rate limiter

    Resolved
    Hi Guillaume, Yes, you need to test stability with only 1uF capacitor on output to check if it is ok. Please note you need also test loop stability after start-up in steady state. As slew rate limiter can be seen as a resistor between TPS61021A's VOUT…

  • TPS61021A: TPS61021A

    Part Number: TPS61021A Hello Team TI, We are using TPS61021A in one of our design along with an ON/OFF controller and and a MOSFET switch. The basic block diagram of the same is shown in the image below. The output (3V) to the Load is controlled through…

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