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  • TPS922052: Start-up issue - Inductor current no present at first PWM pulse

    Part Number: TPS922052 Tool/software: Hi, we are facing an issue with TPS922052 during start-up. The inductor current needs several pulses on PWM pin to settle at the set 1A. To avoid soft start a 6us pulse is sent to the PWM pin during start-up.…
    • Answered

  • TPS922052: Limiting current on EVM

    Resolved
    Part Number: TPS922052 Other Parts Discussed in Thread: TPS922055 , TPS922053 , TPS922053DYYREVM Tool/software: LED team, We have a customer wanting to evaluate the TPS922052, so they will test with TPS922053DYYEVM. The LEDs used by the customer are…
    • Resolved
    • Answered

  • TPS922052: Dimming ratio questions

    Resolved
    Part Number: TPS922052 I was drawn to this chip by the specs: Hybrid and flexible dimming (2,000:1 at 20-kHz PWM, 10,000:1 at 4-kHz PWM, 1,000,000:1 at 120-Hz PWM) What I'm failing to see is how those dimming ratios can be obtained in practice. Given…
    • Resolved

  • TPS922052: UVP resistor divider

    TI Thinks Resolved
    Part Number: TPS922052 Re: How to choose the value for the UVP resistor divider - It was said that UVP pin has internal pullup to Vcc. Question: What is the value of that pullup current?
    • Answered

  • TPS922052: Question about high speed ILED transient waveform.

    Resolved
    Part Number: TPS922052 Hello guys, One of my customer is considering using TPS922052 for their new products. At this moment, they have the following question about this device. Could you please give me your reply? Q. TPS922052 datasheet says that…
    • Resolved
    • Answered

  • TPS922052: TPS92205x UVP and COMP constants

    Resolved
    Part Number: TPS922052 Hi, I checked the data sheet, but it did not contain detailed information on how to determine the constants of UVP and COMP for TPS92205x. Please explain. Or please send us your reference information. Thanks, Conor
    • Resolved

  • TPS922052: Time until FAULT function is executed

    Part Number: TPS922052 Hi, The table below states that the FAULT pin goes LOW when the LED is open, and automatically returns when the open state is resolved. If the LED actually becomes open, how long does it take to determine that it is open and…

  • TPS922052: Does TPS922052DMTR support strobe signal of 30 Hz?

    TI Thinks Resolved
    Part Number: TPS922052 Hi Team, Greetings! I have a query regarding the part TPS922052DMTR. Our application is to switch ON/OFF an IR LED used for camera flash using a PWM signal as shown below. We are planning to feed the strobe signal from…
    • Answered

  • TPS922052: CV mode led driver

    Resolved
    Part Number: TPS922052 Other Parts Discussed in Thread: LM3463 , LM3464 Hi, My system works on parallel connection led string. So, cv mode is more efficient for my design. But ı am not sure TPS92205x is work with cv mode. How can ı start this device…
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    • Answered

  • RE: [FAQ] What is the maximum switching duty cycle of TPS922055 / TPS922054 / TPS922053 / TPS922052?

    Resolved
    For TPS922055 / TPS922054 / TPS922053 / TPS922052 to regulate the output current to the target value, you should make sure that LED (string) voltage < input voltage. For TPS922055 / TPS922054 / TPS922053 / TPS922052 to regulate the output current to…

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