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  • TPS61158: SW node periodically halts at low PWM duty

    Resolved
    Part Number: TPS61158 Hello, Currently I am testing the TPS61158 using the TPS61158EVM-565. Test Setup and Config as below: - VIN : 5V from power supply - 6 LED config and PWM dimming mode (JP3 shorted and JP1 shorted, the rest are open) …
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    • Answered

  • TPS61158: Start up delay time and shutdown delay time for PWM mode

    Resolved
    Part Number: TPS61158 Hello, I have question regarding the parameter on the datasheet. TPS61158 datasheet Figure 8 shows the timing diagram for startup and shutdown for the PWM mode, but I can't find the values for the startup delay, FB ramp and…
    • Resolved

  • TPS61158: Efficiency data of TPS61158

    TI Thinks Resolved
    Part Number: TPS61158 Hi I have a question about TPS61158. Are there the efficiency data when at 2LEDs in serise(about Vout=6V)? Best regards, Yokota
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  • TPS61166: Dimming method of TPS61166 and TPS61158

    Resolved
    Part Number: TPS61166 Other Parts Discussed in Thread: TPS61158 Hi team, I'd like to check about dimming method for TPS61166 and TPS61158. I think that TPS61166 employs PWM dimming, and TPS61158 employs analog dimming by PWM signal. Is my understanding…
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  • RE: TPS61158: Measure LED current produced by TPS61158 with INA139

    Resolved
    INA319 has already an internal resistor of 1kohms. Does this really disturb the control loop of TPS61158? Its FB current is only 2uA and the FB resistor has 10ohms. An external resistor Rin+ on Vin+ input of INA139 has to be added in the calculation…

  • TPS61158: Lower PWM frequency then recommended range 20k~100kHz

    TI Thinks Resolved
    Part Number: TPS61158 Hi Team, My customer wants to use 10kHz PWM frequency for dimming if possible. We are understanding our recommendation is 20k~100kHz for CTRL control though, what side effect will be expected if they use the lower frequency for…

  • TPS61158: The output current accuracy of TPS61158

    TI Thinks Resolved
    Part Number: TPS61158 Hi Is it possible to use it in circuits like images? and What is the output current accuracy when Duty = 1%? [specification] Input Voltage (Logic) : 3.3V Input Voltage (Power) : 7.5 ～ 15V Load : White LED 6ch Maximum…

  • TPS61158: Comparison between TPS61158 and TPS61169

    TI Thinks Resolved
    Part Number: TPS61158 Other Parts Discussed in Thread: TPS61169 , Hi Team, could you please make a proposal which part (TPS61158 and TPS61169) has the better efficiency. Customers requirements: - Input voltage (LiIon): 3,0V to max. 4.2 V - 9…
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  • TPS61158: Doesn't recover from shutdown

    Resolved
    Part Number: TPS61158 Hi We use the TPS61158 in PWM mode in one of our products as display backlight driver. The PWM signal is 50kHz and varies between 2...100%. In general, the device works as expected but we sometimes get returns from customers where…
    • Resolved

  • TPS61158: standard operating conditions 3.3V 20mA

    TI Thinks Resolved
    Part Number: TPS61158 Other Parts Discussed in Thread: TPS61161 Hi, My customer is using TPS61158 as a driver led for a backlight. I can't find on the TI simulator to understand if in standard conditions (3V3, 20mA, 35 ° C) there can be particular…

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