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  • TPS61169: Inductor Substitution

    Part Number: TPS61169 The TPS61169 datasheet includes recommended inductors, which makes me think that there might be reasons for similar inductors to not be suitable? Specifically, the recommended inductors are not easily available to me so I'm wondering…

  • RE: TPS61169: Using separate bias to allow lower input voltage operation?

    Hi, TPS61169/TPS92360 are not recommended in this way. BR Patrick
    • Answered

  • RE: TPS61169: SW output keeps high voltage at 5V when PWM dimming control is 20kHZ,50% duty cycle

    Resolved
    Hi Zoe, This looks like a DCM operation, so the duty cycle will not be stable. With larger load will lead the IC in CCM mode and will get a stable duty cycle. BR Patrick

  • TPS61169: CTRL pwm voltage

    Part Number: TPS61169 Hi, I would like to know If i power the vin of tps61169 with 3.3V, and the CTRL pin with a pwm signal voltage of 1.8V, it works or not works. I read the datasheet and in page 10 is written: "The enable rising edge threshold voltage…

  • RE: TPS61169: LED lifetime calcuration

    Hi Patrick, Is it even difficult to see the difference between TPS61042 and TPS61169 for the same LED? Customers EE is HVAC controller. Best regards, Yuto
    • Answered

  • TPS61169: Regarding unstable switching

    Resolved
    Part Number: TPS61169 Hello, I asked about the unstable switching of TPS61169 in the thread below. I changed the output capacitor from 4.7uF to 1uF and measured it. The result is shown below. It's worse than before the change. I haven't changed the inductor…
    • Resolved

  • TPS61169: TPS61169DCKR

    Part Number: TPS61169 I have designed the board using the TPS61169DCKR with the Rset value to 816mohm , the expected output current (ILED) will be 250 mA. However, the measured ILED is far lower than the expected value, i am getting 120mA only. I have…
    • Answered

  • TPS61169: Switching is unstable

    Resolved
    Part Number: TPS61169 Hello, I would like to ask you about TPS61169. I have attached my circuit below. In my circuit, the switching is not stable and it is in an oscillating state. I think there is a problem with phase compensation. (Question 1) Inductor …
    • Resolved

  • TPS61169: Some design question about TPS61169...

    Part Number: TPS61169 Other Parts Discussed in Thread: TPS61199 Dear Sirs, My customer designed with TPS6169 and had some questions that need help. Vin: 12V BL : 80mA*4 / 28V Cin and Cout use 10uF/50V MLCC They found 1. there is audible noise cames from…
    • Answered

  • TPS61169: Recommended device

    Resolved
    Part Number: TPS61169 Other Parts Discussed in Thread: TPS92638-Q1 , TPS61199 , Hi team, We are looking for 6ch/8ch LED device, do you have any recommendation? - VIN: 24V - ch#: 6 or 8 - IOUT: 60mA/ch max. - Control: EN or PWM, no serial interface Best, …
    • Resolved

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