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  • TPS61165: 1Hz - 100Hz PWM dimming 20 IR LED solution

    Part Number: TPS61165 Hi team, Customer comes to us for a solution to drive 20 IR LED(Vf=1.5V at 20mA). VIN is 2.9V ~ 4.5V, dimming frequency 1Hz to 100Hz, LED on time = 1ms. Waveform could refer following: The 20 LED could be one string or several string…

  • TPS61165: Vf for different input voltage

    Part Number: TPS61165 Hi Team, Do you have the information for below: 1. Vf range and current range when Vin = 12V 2. Vf range and current range when Vin = 24V Thanks! Best Regards, Ernest

  • TPS61165: Intellectual

    Part Number: TPS61165 Dear all, We have designed TPS61165DBV as a backlight driver for our LCD module. You can see the schematic below, My understanding is R12 limits the current to the LED. The flexible one-wire digital and PWM is used for controlling…

  • TPS61165: Low temperature failure

    Part Number: TPS61165 TPS61165 used 5V to 20V in the previous product, and there was no problem in the high and low temperature test, but now it is changed to 12V to 20V. It is found that it fails at low temperature and is normal at room temperature…
    • Answered

  • TPS61165: Protection function when Rset is abnormal

    Resolved
    Part Number: TPS61165 Other Parts Discussed in Thread: TPS61160 , TPS61160A Hi support team, Section 8.3.2 mentions "Open LED Protection". If the connection with the LED is normal, but Rset, which determines the current value, is opened or shorted…
    • Resolved

  • TPS61165-Q1: TPS61165-Q1 outout abnormal

    TI Thinks Resolved
    Part Number: TPS61165-Q1 Other Parts Discussed in Thread: TPS61165 Dear TI Team, TPS61165 is used as the backlight power supply of LCD screen. At present, 1/5 of the prototypes's LCD displayed abnormal After investigation, it is found that the output…
    • Answered

  • TPS61165: TPS61165 short the LED+ and LED-

    Resolved
    Part Number: TPS61165 Hello, Currently I'm testing the TPS61165 with the TPS61165EVM. When I shorted the LED+ and LED- with 0.57Ω of the Rset, the Rset resistor would be destroyed and kept open after that, in this test, only the Rset was broken, the TPS61165…
    • Resolved
    • Answered

  • TPS61165: Minimum PWM dimming frequency

    Resolved
    Part Number: TPS61165 Product datasheet is taking about different values of minimum PWM dimming frequencies. I would like to clarify, which is right and which is typo. 1. Datasheet says, min PWM freq is 5kHz in 7.2 Recommended Operating Conditions https…
    • Resolved
    • Answered

  • TPS61165: TPS61165

    Resolved
    Part Number: TPS61165 Other Parts Discussed in Thread: TPS92390 the device TEXAS TPS61165DBVR do no work properly with LOW PWM level (4%), the current output goes up from 1mA up to 4mA without reasons. The problems seems to be link with the input voltage…
    • Resolved

  • RE: TPS61165: 2 LED STRIPS -400mA @ 12VDC EACH

    Hi Kaviya, I'll close this thread due to inactivity and if you have more questions, please reply to it directly and it will open again. Please help to click "Resolve" if the problem is solved. BR Patrick

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