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LM61460-Q1: SCH Review

Xiaowei Zhang
Expert 3615 points
Part Number: LM61460-Q1

Tool/software:

Hi team,

Can you please help review the LM61460-Q1 SCH as attached, and double confirm if the connection below can be used? Thanks

TI-LIN-POWER.pdf

Best Regards,

Xiaowei Zhang

  • 0
    TI__Genius 11385 points

    HI Xiaowei,

    What are the input and output voltages here? 

    What is the output current required? 

    Xiaowei Zhang said:
    double confirm if the connection below can be used?

    I believe you are referring to output voltage being adjustable, right? 

    Thanks,

    Best Regards,

    Taru

  • 0 in reply to Taru Kapoor
    TI__Expert 3615 points

    Hi Taru,

    Input range 6-18V, output is controlled by TEC_PER_PWM, should be 2-6V, maximum 2A.

    Best Regards,

    Xiaowei Zhang

  • 0 in reply to Xiaowei Zhang
    TI__Genius 11385 points

    Hi Xiaowei,

    Please see my comments:

    1. Ensure Vcc, Bias and Boot Caps are high quality ceramic caps (Eg X7R)

    2. Ensure Input EMI Filter is properly damped. 

    3. Ensure FB voltage adjustment (TEC_PWR_PWM) is adjusted according to the FB ref voltage. See https://www.ti.com/lit/an/slyt777/slyt777.pdf for more information. Using a DAC reference will give a better result. 

    4. PGOOD is reference to Vout - adjusting Vout will also adjust the PGOOD reference voltage. 

    5. Since this is a 2A design - LM61460-Q1 is an overkill - customer can consider other devices with lower current capabilities. 

    6. I would recommend customer check the stability on the board once at the max and min output voltage.

    Thanks,

    Best Regards,

    Taru