• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 42 subscribers
  • Views 383 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

PMP30046: Does TI have an energy storage solution with power up to 200 watts?

user4979999
Prodigy 690 points
Part Number: PMP30046

Hi,

 

1.Does TI have an energy storage solution with power up to 200 watts?

The features similar to the PMP30046.

2.Can the PMP30046 be connected in parallel?

  Ex.

Each module 50W.

Parallel 2 module 100W.

Parallel 4 module 200W.

  • 0
    TI__Intellectual 2610 points
    Hi Lynn,

    Sorry for the delay. The holdup capacitor is 1000uF; the intermediate bus voltage is 28V, let’s assume the buck is able to work down to 6V.
    Means du is 28V-6V; by charge law Q = C x U = I x t; differentiated:
    C x du = I x Thu; I is the average current, Thu the holdup time;

    We need to understand the holdup time and average current to support during hold-up. Please advise.

    Ryan
  • 0 in reply to Ryan Manack
    Prodigy 80 points
    Hi Ryan
    Max Load is 12V 16A 30ms.
  • 0 in reply to Mike Lee88
    TI__Intellectual 2770 points

    Hello Mike, so let's assume your capacitor voltage is 28V and the buck works down to 14V input;
    this allows the capacitor voltage to drop from 28V to 14V, so du = 14V;
    output power is 192W, results in estimated input power 202W at 95% effcy.
    The average input current results in 9.6A at 21V input - so we can do a quick estimation:

    Q = C x U = I x t, results in C = I x t / U, here C =  I(avg) x t(hold up) / du = 9.6A x 30ms / 7V;
    so you need a capacitor bank of 41mF; capacitor tolerance is +/-20%, so go for 50.000uF;
    the voltage rating should be 35V for your bank. Best regards, Bernd